SYSTEMS AND METHODS COMBINING DISCRETE FLUX-DIRECTED MAGNET ASSEMBLIES THAT INTEGRATE MAGNETIC GEAR BOXES WITH SINGLE OR DUAL ROTOR MACHINES

A magnetic array for use in a synchronous electrical machine or a magnetic gear box, comprising a plurality of discrete magnetic segments. When individual ones of the segments are spaced away from influence of ferromagnetic material, such as prior to placement in the array, each includes a pole having the same maximum field strength. Each segment is positioned in a sequence along a circumferential array with changes in field orientation by which the field of each segment is spatially rotated relative to the field of a next segment in the sequence. Each segment is positioned in sufficient proximity to the next segment in the sequence to enable the fields to interact with one another and effect flux channeling.

OUTER ROTOR OF PERMANENT MAGNET ASSISTED SYNCHRONOUS RELUCTANCE MOTOR AND PERMANENT MAGNET SYNCHRONOUS MOTOR COMPRISING THE SAME

An outer rotor of a permanent magnet assisted synchronous reluctance motor includes an annular rotor core and a plurality of magnetic steels; the annular rotor core includes a central hole; the annular rotor core further includes a plurality of slots, and the plurality of magnetic steels are disposed in the plurality of slots and form a plurality of magnetic poles along the circumferential direction of the rotor core. Each magnetic pole includes three shapes of magnetic steel: a first arc-shaped magnetic steel concentric with the rotor core, a second arc-shaped magnetic steel not concentric with the rotor core, and a rectangular magnetic steel. In each magnetic pole, the three shapes of magnetic steel are symmetrically arranged along the center line of the magnetic pole, and the first arc-shaped magnetic steel, the second arc-shaped magnetic steel and the rectangular magnetic steel are sequentially spaced radially from inside to outside.

MAGNETIC CORE, ELECTRIC MOTOR HAVING MAGNETIC CORE, AND MOWER HAVING ELECTRIC MOTOR

The invention discloses a magnetic core, which includes a ring-shaped body portion and a plurality of magnetic pole portions connected to the body portion. The magnetic pole portions are arranged on an inner surface of the body portion in a circumferential direction. The body portion and the magnetic pole portions are connected to each other. Each of the magnetic pole portions is triangular and includes a top end and two free ends. The top end is connected to the body portion. Two side surfaces on both sides of the top end of the magnetic pole portion are respectively opposite to and spaced apart from an inner surface of the body portion to form a first receiving groove and a second receiving groove, the first receiving groove and the second receiving groove are used for receiving magnets, and the first receiving groove and the second receiving groove have open ends in an inner surface of the magnetic core. The magnetic core of the present invention has a significant magnetization effect and helps to increase the power density of the motor. 1. A magnetic core , comprising an annular body portion and a plurality of magnetic pole portions connected to the body portion , the plurality of magnetic pole portions circumferentially distributed inside the body portion , characterized in that the body portion and the magnetic pole portions are connected to each other , each of the magnetic pole portions is triangular and comprises a top end and two free ends , the top end is connected to the body portion , two side surfaces on both sides of the top end of the magnetic pole portion are respectively opposed to and spaced apart from an inner surface of the body portion to form a first receiving groove and a second receiving groove , the first receiving groove and the second receiving groove are for receiving magnets , the first receiving groove and the second receiving groove have open ends in an inner surface of the magnetic core.2. The magnetic core of claim 1 , characterized ...

ROTOR FOR A SYNCHRONOUS MACHINE

A rotor for a synchronous machine is described. The rotor includes a central axis; a bore being centrally positioned and extending axially relative to the central axis. Poles are arranged around the bore and poles extend axially in a direction parallel to the central axis. An air gap surface is configured to face an air gap and slots mutually angularly spaced relative to the central axis wherein each slot extends axially in a direction parallel to the central axis and wherein each slot is adjacent the air gap surface.

Rotating electric machine

A rotating electric machine includes a field system, which includes a magnet section, and an armature. The magnet section includes a plurality of magnets that are arranged at predetermined intervals and in alignment with each other in a circumferential direction. The magnets have easy axes of magnetization oriented such that at locations closer to a d-axis, the directions of the easy axes of magnetization are more parallel to the d-axis than at locations closer to a q-axis. In the magnets, magnet magnetic paths are formed along the easy axes of magnetization. The field system further includes a field-system core that is formed of a soft-magnetic material. The field-system core has protrusions protruding to the armature side. Each of the protrusions is located closer to the q-axis than to the d-axis in the circumferential direction. Circumferential end surfaces of the protrusions respectively abut circumferential end surfaces of the magnets.

VENTILATION DEVICE

A ventilation device (1) comprising an electric motor (2) equipped with a rotor active part (3A) to which blades (4A, 4B, 4C) of a fan (5) and a stator (6) are torsionally coupled; the electric motor (2) is of the synchronous reluctance type, with a wound stator (6) which is positioned, at least partially, inside the rotor active part (3A), the rotor active part (3A) being made, at least partially, of ferromagnetic material.

ACTUATOR

ROTATING ELECTRIC MACHINE

A rotating electric machine according to the present disclosure is a rotating electric machine including a stator and a rotor, in which the rotor includes a plurality of permanent magnets arranged in a circumferential direction of a rotation axis and a plurality of protrusions arranged in the circumferential direction, the stator includes a plurality of teeth, an armature winding wound around the plurality of teeth, and a field winding wound around the plurality of teeth, a field pole is formed in the plurality of protrusions by energization to the field winding and the plurality of permanent magnets, the plurality of permanent magnets and the plurality of teeth are alternately arranged at intervals in the circumferential direction to form the field pole, all the permanent magnets have the same polarity, wherein, |Pa−Pf|≠1, |Pr−Pf|≠1, and |Pa−Pr|≠1, and Pris even.

Rotor

A rotor includes: a shaft; a tubular rotor core; and a plurality of magnets. The shaft extends along a center axis. The rotor core surrounds the shaft. The plurality of magnets is disposed outside the rotor core in a radial direction and is aligned in a circumferential direction. A plurality of first recessed portions recessed outward in the radial direction is aligned in the circumferential direction in an inner surface of the rotor core in the radial direction. Each of the first recessed portions overlaps each of the magnets in the radial direction.

BRUSHLESS DC MOTOR

A brushless DC motor may include an annular rotor including a plurality of annular sectors. Each exemplary annular sector includes a respective array of permanent magnets embedded in and equally spaced circumferentially around each respective annular sector. The motor may further include an annular stator coaxially disposed within the annular rotor. An exemplary annular stator may include a plurality of coils mounted on and equally spaced circumferentially around the annular stator, where each coil may be energized with a current based at least in part on the rotor position. The motor may further include a position sensor that may generate an output signal indicative of the rotational position of the annular rotor, and a controller that may be configured to receive the output signal from the position sensor and utilize a power source to energize each coil of the plurality of coils based on the received output signal.

Rotor system for permanent magnet motors powering electric submersible pumps

Embodiments disclosed herein describe methods for improved permanent magnet motor rotor systems for submersible electric motors. The improved rotor system includes a single piece of material shaft with surface mounted permanent magnets. The single piece of material shaft minimizes the number of shaft bearings and locates the bearings outside of the stator windings.

Magnet ring of a multi-pole generator for a wind turbine

In the case of a magnet system ( 1 ) of a multipole generator, in particular for a wind energy installation or wind power installation, comprising a magnet ring ( 2, 2′, 2 a ′- 2 c′, 2 a - 2 j ) having a support ( 5 ) on whose external circumference or internal circumference individual permanent magnets ( 4, 4 ′) are arranged in one or more rows with a regularly changing polarity alignment, the aim is to provide an assembly capability which makes it possible to equip an external rotor or an internal rotor for a generator of a wind power installation with a multiplicity of individual permanent magnets, which are arranged close to one another, in a manner which is simple and advantageous for assembly. This is achieved in that a plurality of magnet rings ( 2, 2′, 2 a - 2 j, 2 a ′- 2 c ′) are joined together at the side, in the axial direction, coaxially and resting on one another, to form a magnet wheel ( 10 ).

Fan and motor thereof

A motor includes a base plate, a stator, a rotor, a circuit board and a Hall element. The stator is disposed on the base plate. The rotor is disposed around the stator, and includes a rotating shaft and a magnetic assembly. The rotating shaft is extended to a center part of the stator. The magnetic assembly includes plural magnets. The circuit board is arranged between the stator and the base plate and comprises a Hall element. A first gap and a second gap are arranged between every two adjacent magnets. The first gap is in the vicinity of the Hall element, and opposed to the second gap. The distance of a vacant portion of the first gap is shorter than the distance of the second gap, thereby facilitating continuous and steady magnetic induction between the Hall element and the magnetic assembly.

Brushless direct-current motor having currentless stoppage

The invention relates to a brushless direct-current motor ( 1 ), comprising a stator ( 2 ), a rotor cup ( 30 ) that revolves around the stator ( 2 ) and has a plurality of permanent-magnet poles (N, S), and a detent torque plate ( 4 ) that is connected to the stator ( 2 ) and has several pole shoes ( 41 ) for generating a detent torque that brings the revolving rotor cup ( 30 ) into a detent position. The pole shoes ( 41 ) are each arranged in the detent position between two adjacent poles (N, S) of the revolving rotor cup ( 30 ) to form a magnetic short circuit. The detent torque plate ( 4 ) is arranged substantially outside of the magnetic rotating field produced by the stator ( 2 ) during operation, whereby the production of the detet torque is decoupled from the electrical behavior of the brushless direct-current motor ( 1 ) and the power of the brushless direct-current motor ( 1 ) is not substantially influenced by the presence of the detent torque plate ( 4 ).

Motor and method of manufacturing motor

A rotating portion of a motor includes a rotor holder including a cylindrical portion arranged to be coaxial or substantially coaxial with a central axis, a plurality of magnets arranged in a circumferential direction on an inner circumferential surface of the cylindrical portion, and a resin portion arranged on a surface of the rotor holder. The resin portion includes a plurality of ribs arranged at regular or substantially regular intervals in the circumferential direction along the inner circumferential surface of the cylindrical portion, and an outer tubular portion arranged to cover an outer circumferential surface of the cylindrical portion. Each rib and the outer tubular portion are arranged to be defined by a single monolithic member such that each rib and the outer tubular portion are continuous with each other. Each magnet is preferably arranged between a separate pair of adjacent ones of the ribs.

Method for assembling part of a generator, generator and wind turbine

A method for assembling part of a generator is disclosed. A magnet assembly with at least one magnet and a mounting plate is fastened to a base element by welding the mounting plate to the base element.

Wind turbine rotary electric machine

A wind turbine rotary electric machine having a tubular body, in turn having a cylindrical wall; and a plurality of clips formed integrally with the cylindrical wall and configured so that each pair of facing clips defines a seat for housing an active sector.

Electromagnetic module and spindle motor having the same

Disclosed herein are an electromagnetic module for a spindle motor including a shaft and a spindle motor having the same. The electromagnetic module includes: an armature including a core and a coil wound around the core; and a magnet facing the armature, wherein the magnet is provided with a protrusion part disposed over the core. The spindle motor includes: a rotor part including a shaft, a hub, and a magnet; a stator part including a sleeve rotatably supporting the shaft, a base having the sleeve coupled thereto, and an armature facing the magnet, fixedly coupled to the base, and including a core and a coil; and a fluid dynamic bearing part formed between the rotor part and the stator part by being filled with oil, wherein the magnet is provided with a protrusion part disposed over the core.

DISK TYPE MAGNETIC GENERATOR

A disk type magnetic generator is a core-free magnetic generator including a shaft connected, in series, to a first rotor, a stator, and a second rotor or a core-included magnetic generator including a rotor and a stator connected in series. The rotor has a surface that is positioned against a stator plate and includes a number of flat-plate magnets arranged in a single circle and each forming an inclination angle with respect to a radius of rotor plate. The rotor plate alternatively includes multiple groups of magnets rotatably mounted on the same plate and arranged in concentric circles. The rotor alternatively includes multiple groups of magnets rotatably mounted in a diameter expansion direction and arranged in concentric circles. Alternatively, a combined assembly of a rotor and a stator that are connected in series by a driven shaft is provided with a rotatably connected weight ring in a diameter expansion direction. 1. A disk type magnetic generator , comprising a motor-coupled shaft that is connected , in series , to a first rotor , a stator , and a second rotor , the stator comprising a stator plate that forms , centrally , a stator plate bore and comprises a number of rotatable coils that are arranged in a single circle , the first rotor and the second rotor comprising two rotor plates each of which forms , centrally , a rotor plate bore and comprises a corresponding number of magnets that are arranged in a single circle to correspond to the number of rotatable coils that are mounted to the stator plate and arranged in a single circle , the first rotor and the second rotor being rotatable in unison with a driven shaft , whereby due to a bearing received and retained in the stator plate bore , the stator is kept stationary and enables connection with a power cable for power transmission so as to provide a core-free disk type magnetic generator that is characterized in that the first rotor and the second rotor each have a surface positioned against the ...

Permanent magnet rotor with flux concentrating pole pieces

A permanent magnet machine is provided including a stator and a rotor, the rotor being adapted to rotate relative to the stator, the rotor including a plurality of permanent magnets separated in the circumferential direction from each other by radially extending rotor pole pieces for concentrating the magnetic flux from the permanent magnets, the stator having a structure that defines radial limits of an air gap between the stator and the rotor for communicating magnetic flux between the stator and the rotor, wherein at least some of the permanent magnets extend radially outside the radial limits of the air gap as defined by the stator structure.

Outer rotor-type brushless motor

The outer rotor-type blushless motor comprises: a stator including a cylindrical housing, a stator core having stator pole teeth and a bearing coaxially incorporated in a cylindrical hole of the hosing; and a rotor including a rotor yoke, a rotor hub provided to the rotor yoke and a rotor shaft rotatably supported by the bearing. A first resin washer, through which the rotor shaft is pierced and which contacts an end face of the rotor hub, and a second resin washer, which contacts an end face of the bearing incorporated in a center hole of the stator core, contact each other. The second resin washer has an elastic projected section fitted in a concave section formed in the center hole of the stator core.

Rotor for Magnetic Motor

Rotor formed by groups of materials () that orientate the magnetic field and magnets () in spiral lines, with the two magnetic poles of each magnet () facing the stator (). Close to a magnetic pole of the end of the group, the material () that orientates the magnetic field protrudes towards the stator (). This configuration enables to vary the field of each magnetic pole of the rotor which is projected to the stator; in this way, one end of the group of magnets () concentrates a very close magnetic pole in order to interact with the stator () and the opposite magnetic pole moves away gradually in order to decrease the interaction with the stator (). The application is for magnetic motors. 1. A rotor for a magnetic motor comprising:a shaft;a rotor body configured to rotate about the shaft;a plurality of rotor magnets forming a magnetic field, the plurality of rotor magnets: i) being disposed in groups around the shaft at an external circumference of the rotor body, ii) having a plurality of faces, some of the plurality of faces having one magnetic pole, others of the plurality of faces having two magnetic poles, and iii) being separated from each other by a distance;a material that orients the magnetic field; anda stator that is positioned adjacent to a periphery of the circumferential shape of the rotor body, such that an axis of the stator is: i) orthogonal to a radius of the rotor body, and ii) parallel to a rotation plane of the rotor body; whereinthe plurality of rotor magnets have only one magnetic pole on each of the plurality of faces, one of the faces with a largest surface area being adjacent to a second of the plurality of faces with a next largest surface area, such that the plurality of rotor magnets are disposed adjacent each other from largest surface area to a smallest surface area of the plurality of faces,each group of the plurality of rotor magnets being formed of at least one magnet, the at least one magnet having one end face with two magnetic ...

Direct drive rotor with metal coupler

A rotor for an outer rotor-type motor is provided. The rotor includes a metallic coupler and a polymeric frame molded over at least part of the metallic coupler.

Axial load sharing bearing system and associated method of use

An axial flux electric machine and associated method of use that includes a shaft, a rotor attached to the shaft, a plurality of permanent magnets positioned underneath the rotor, an electrical winding positioned below the plurality of permanent magnets, a stator that encircles the shaft that is located below the rotor, a first bearing assembly located below the stator and encircling the shaft of the rotor, a second bearing assembly located below the first bearing assembly and encircling the shaft, and a spring mechanism, located between the first bearing assembly and the second bearing assembly, to distribute load placed on the shaft between the first bearing assembly and the second bearing assembly.

Brushless motor and disk drive apparatus

A brushless motor includes a stationary unit and a rotary unit rotatably supported with respect to the stationary unit. The stationary unit includes an armature and a base member arranged to support the armature. The rotary unit includes a magnet, a hub made of a magnetic material and a rotor yoke made of a magnetic material. The armature includes a plurality of coil patterns arranged along a circumferential direction. The hub includes an inner lower surface, an outer lower surface and a recess portion. The recess portion is arranged between the inner lower surface and the outer lower surface and depressed upward. At least a portion of the magnet is accommodated within the recess portion. At least one of the inner lower surface and the outer lower surface is positioned above a lower surface of the magnet.

Arrangement to ensure an air gap in an electric machine

An arrangement to ensure an air gap in an electrical machine is provided. The electrical machine has a stator arrangement and a rotor arrangement, the rotor arrangement rotating around a longitudinal axis. An air gap is defined by a distance between parts of the rotor arrangement and parts of the stator arrangement, wherein the parts of the stator arrangement are opposite to the parts of the rotor arrangement along a certain length. The stator arrangement includes a lamination stack which is constructed to support a winding of a stator-coil, and the rotor arrangement includes a plurality of permanent magnets. A cross section of the air gap changes along the certain length such that the air gap is not uniform in view to the certain length. The cross section of the air gap is configured by a change in a shape of the lamination stack along the certain length.

Motor Unit, and Dynamo-Electric Machine and Dynamo-Electric Machine Device that Use Same

Provided are: a low cost, high-performance motor unit which has a large capacity obtained without increasing the radial size of the axial gap motor and which can be assembled with improved efficiency; and a dynamo-electric machine and a dynamo-electric machine device which use the motor unit. A motor unit comprises: an in-unit shaft; a stator provided along the circumferential direction of the in-unit shaft; two rotors rotating together with the in-unit shaft and provided so as to face both surfaces of the stator in the circumferential direction; and engagement sections provided to the surface of each of the rotors which is on the side opposite the stator. Such motor units are engaged with each other at the engagement sections and rotate integrally. 1. A dynamo-electric machine , whereina motor unit comprises:an in-unit shaft;a stator that is provided at the in-unit shaft in the circumferential direction;two rotors that are rotated together with the in-unit shaft and are provided while facing the both surfaces of the stator in the circumferential direction, andengagement sections that are provided on the both surfaces of the rotors on the sides opposite to the stator, and plural motor units are engaged at the engagement sections to be integrally rotated.2. The dynamo-electric machine according to claim 1 , the machinecomprising:brackets that are provided on the both end sides of the plural motor units in the shaft direction;a housing that covers the circumferential direction of the plural motor units; anda shaft unit that is disposed between the brackets located at the both ends in the shaft direction and the plural motor units and includes a disc section and a shaft section,wherein the shaft section of the shaft unit is rotatably held at the brackets, and the engagement sections are provided on the surface of the disc section facing the motor unit, so that the shaft unit is engaged with the plural motor units at the engagement sections to be integrally rotated.3. ...

MULTI-PHASE MODULAR COIL ELEMENT FOR ELECTRIC MOTOR AND GENERATOR

Aspects and embodiments disclosed herein include a highly efficient electric motor which can be embodied in several configurations, including a standard motor, a hub motor, a linear motor, or other motor configuration. In one example, there is provided a motor comprising a rotor including a plurality of magnets and a stator including at least one coil module, the at least one coil module including a plurality of coils of conductive material, the plurality of coils arranged horizontally displaced to from one another and retained in a matrix material of the at least one coil module. 1. A motor comprising:a rotor including a plurality of magnets; anda coil module including a plurality of coils of conductive material, the plurality of coils arranged in a substantially common plane horizontally displaced from one another.2. The motor of claim 1 , wherein the coil module is retained in a material to forming a portion of a body of the coil module.3. The motor of claim 1 , including one or more additional coil modules.4. The motor of claim 3 , wherein each of the coil modules is separately installable in the motor.5. The motor of claim 3 , wherein one or more of the coil modules includes one or more features configured to engage with corresponding one or more features on one or more other coil modules.6. The motor of claim 3 , wherein each of the coil modules is separately removable from the motor.7. The motor of claim 3 , wherein one or more of the coil modules form a stator assembly.8. The motor of claim 3 , wherein the motor is operable with at least one of the plurality of coils being deactivated or damaged.9. The motor of claim 1 , wherein the coil module is removable and replaceable from the motor.10. The motor of claim 1 , wherein the coil module is included in a stator of the motor.11. The motor of claim 1 , wherein the coil module is removable from the motor while the motor is in operation.12. The motor of claim 1 , wherein the coil module is installable in the ...

Method of manufacturing a rotor for an electric motor for a washing machine

A method of manufacturing a rotor for an electric motor that includes producing a generally flat metal strip, bending one section of the strip relative to another section, and rolling the strip to form a cup-shaped shell.

ROTATION DRIVE DEVICE AND CENTRIFUGAL PUMP APPARATUS EMPLOYING SAME

This centrifugal blood pump apparatus includes an impeller () provided in a blood chamber (), and a plurality of coils () provided in a motor chamber () for driving the impeller () to rotate with a dividing wall () interposed therebetween. A flexible substrate () in the shape of a strip is arranged to surround outer circumferences of the plurality of coils (), and is connected to the plurality of coils () and a connector (). A driving voltage (VU, VV, VW) is externally supplied to the plurality of coils () via the connector () and the flexible substrate (). Thus, assembling workability, productivity and reliability are improved. 1. A rotation drive device comprising:a rotatably provided rotor; anda drive unit for driving said rotor to rotate, a plurality of first magnetic elements provided facing said rotor,', 'a plurality of coils wound around said plurality of first magnetic elements, respectively, for generating a rotating magnetic field,', 'a connector for externally receiving a driving voltage, and', 'a flexible substrate connected to said plurality of coils and said connector,', 'said flexible substrate being provided with a wiring pattern for supplying said driving voltage externally provided via said connector to said plurality of coils., 'said drive unit including2. The rotation drive device according to claim 1 , whereinsaid rotor includes a plurality of first permanent magnets,each first permanent magnet is magnetized in a direction orthogonal to a rotation direction of said rotor,the magnetic polarities of adjacent ones of said first permanent magnets oppose each other, andsaid plurality of first magnetic elements are arranged to face said plurality of first permanent magnets.3. The rotation drive device according to claim 2 , whereinsaid rotor further includes a plurality of second permanent magnets,said plurality of second permanent magnets are interposed between said plurality of first permanent magnets, respectively,each second permanent magnet is ...

Motor stator with reduced coil configuration

A motor is provided for use in a machine. The motor includes a segmented stator comprising magnetically isolated core segments.

Axial Gap Rotating Electrical Machine

An axial-gap rotating electrical machine in which the distance of the air gap between a rotor and a stator can be accurately controlled is provided. A large diameter portion and a small diameter portion are formed on a rotating shaft and a stepped portion is formed therebetween. A rotor yoke is secured thereon and the position of the rotor is determined. The position of a bearing secured in a housing for rotatably supporting the rotating shaft is determined by a boss portion of the rotor yoke. The position of the housing is determined by the position of the bearing and the securing position of the stator is determined by a stepped portion formed on the inner circumference of the housing. Thus the position of the housing relative to the rotating shaft can be determined from the position of the rotor and the securing position of the stator can be determined.

MODULAR ELECTRICAL MACHINE

A modular electrical machine includes multiple integrated rotor modules releasably mounted upon a power transmission member to form a torus-like structure, wherein each integrated rotor module includes a series of parallel rotor plates spaced apart to provide an air gap between successive rotor plates in the series. The rotor plates hold permanent magnets securely within the air gap. Corresponding stator modules, each made of multiple air-cored coils potted in a resin material to form a blade. Each blade is externally supported with respect to the rotor module and is positioned between the permanent magnets within one of the air gaps between successive rotor plates. 1. A modular electrical machine comprising a plurality of integrated rotor modules each having at least 2 coaxial rotor stages , and corresponding stator module assemblies operatively positioned in the respective rotor stages of the integrated rotor modules.2. A modular electrical machine as claimed in claim 1 , wherein each integrated rotor module comprises a series of parallel rotor plates spaced apart to provide an air gap between successive rotor plates in the series claim 1 , wherein the rotor plates comprise permanent magnets claim 1 , and the modular electrical machine further comprises a plurality of stator modules claim 1 , each stator module comprising a plurality of air-cored coils potted in a resin material to form a blade claim 1 , each blade being externally supported with respect to a corresponding rotor module claim 1 , and wherein each blade is positioned between the permanent magnets within one of said air gaps between successive rotor plates.3. A modular electrical machine comprising a power transmission member claim 1 , and a plurality of integrated rotor modules releasably coupled to the power transmission member claim 1 , wherein each integrated rotor module comprises a series of parallel rotor plates spaced apart to provide an air gap between successive rotor plates in the series ...

ROTOR MAGNET POSITIONING DEVICE

A device for positioning a planar array of magnets within a permanent magnet electrical machine of the type having a rotor and stator with an air gap there between. The device includes a body made of non-ferrous material and having a first side which is attachable to the rotor and a second side which, in an assembled machine, faces the air gap. The first side of the body has a plurality of recesses therein for receiving a corresponding plurality of magnets. The recesses are shaped and arranged to separate the magnets from each other and maintain a consistent spacing between them. When the device is attached to the rotor the magnets are held in a fixed position against the rotor. The electrical machine may be a motor or a generator. 1. A magnet positioning device for positioning a planar array of magnets within an electrical machine , the machine including a rotor and a stator with an air gap there between , the device including a body made of non-magnetic and non-electrically conductive material and having a first side which is removably couplable to the rotor and a second side located opposite the first side , the first side of the body having a plurality of recesses therein for receiving a corresponding plurality of magnets , the recesses being shaped and arranged to separate the magnets from each other and maintain a consistent spacing between them , such that when the device is coupled to the rotor the magnets are held in a fixed position against the rotor.2. A device as defined in wherein the electrical machine is an axial flux rotary motor having a disc shaped rotor which is rotatable about an axis claim 1 , the disc shaped rotor spaced from the stator in a direction extending along the axis to define the air gap there between claim 1 , the body of the device having an annular shape with the plurality of recesses spaced about the annulus such that the plurality of magnets are spaced around the axis.3. A device as defined in claim 1 , wherein the electrical ...

Motor and washing machine having the same

A motor may adjust interlinkage magnetic flux of a rotor and a stator so as to rotate at high speed by lowering torque during a dehydration operation of a washing machine. The motor includes a rotor in which a plurality of magnets and a plurality of rotor cores are alternately arranged in a circumferential direction of the rotor, the plural magnets being magnetized in the circumferential direction so that the same polarities thereof face each other, a stator around which a coil is wound, and a magnetic flux adjustment member to adjust interlinkage magnetic flux of the rotor and the stator by adjusting leakage magnetic flux. The magnetic flux adjustment member includes a ring-shaped variable magnetic substance, and a pressing member which presses the magnetic substance and varies the shape thereof.

ELECTRIC MOTOR, HOISTING MACHINE AND ELEVATOR SYSTEM

An electric motor, a hoisting machine and also an elevator system are disclosed. The electric motor includes a stator, which stator includes slots, into which slots a concentrated winding is fitted. The electric motor also includes a rotating rotor, which rotor includes permanent magnets placed consecutively in a ring in the direction of the rotational movement. The ratio (L/L) of the width of a permanent Lp magnet at the point (L) of the center line of the magnet and the width (L)′ of a magnetic pole of the rotor is at least ⅔ and at most ⅘. 3. The electric motor according to claim 2 , wherein the concentrated winding is a concentrated fractional-slot winding.4. The electric motor according to claim 2 , wherein the air gap between the stator and the rotor is essentially in the direction of the axis of rotation of the rotor.5. The electric motor according to claim 1 , wherein the concentrated winding is a concentrated fractional-slot winding.6. The electric motor according to claim 5 , wherein the slots per pole and phase (q) of the concentrated fractional-slot winding is smaller than 0.5.7. The electric motor according to claim 6 , wherein the air gap between the stator and the rotor is essentially in the direction of the axis of rotation of the rotor.8. The electric motor according to claim 5 , wherein the air gap between the stator and the rotor is essentially in the direction of the axis of rotation of the rotor.9. The electric motor according to claim 1 , wherein the air gap between the stator and the rotor is essentially in the direction of the axis of rotation of the rotor.10. The electric motor according to claim 1 , wherein the tip of the arrow-shaped permanent magnet on the rotor is disposed farther from the axis of rotation of the rotor than the center line of the aforementioned permanent magnet.11. The electric motor according to claim 1 , wherein the magnetic poles of consecutive permanent magnets are of opposite directions to each other.12. The ...

AXIAL GAP TYPE ELECTRIC ROTATING MACHINE, ELECTRIC WHEELCHAIR AND ELECTRIC BICYCLE

An axial gap type electric rotating machine is disclosed. The rotating machine includes a rotor arranged to rotate about an axis of rotation, and a stator arranged so as to face the rotor with a predetermined gap in an axial direction of the axis of rotation. The rotor includes a back yoke and an annular rare earth bonded magnet made of a circumferentially continuous member fixed to the back yoke. The magnet is magnetized so that an N-pole and an S-pole of magnetic poles are arranged alternately in a circumferential direction, and includes cutout portions formed between adjacent magnetic poles. The stator includes a plurality of tooth portions arranged along a circumferential direction so as to face the magnet and a winding wound on the tooth portions. 1. An axial gap type electric rotating machine , comprising:a rotor that is rotatable about an axis of rotation; anda stator that faces the rotor, a predetermined gap being formed between the rotor and the stator in an axial direction of the axis of rotation;wherein the rotor includes a disc-shaped back yoke and an annular rare earth bonded magnet;wherein the annular rare earth bonded magnet includes a circumferentially continuous member that is fixed to a face of the back yoke that faces the stator;wherein the annular rare earth bonded magnet is magnetized so that an N-pole and an S-pole of each of a plurality of magnetic poles are arranged alternately in a circumferential direction, and a cutout portion is formed between adjacent magnetic poles;wherein the stator includes a plurality of tooth portions disposed along the circumferential direction and facing the rare earth bonded magnet and a plurality of windings that are wound on the plurality of tooth portions; andwherein each tooth portion includes a pair of side protruded portions formed at a tip end portion of each tooth portion facing the rare earth bonded magnet so as to extend in the circumferential direction.2. The axial gap type electric rotating machine of ...

Axial Gap Rotating Electric Machine

An axial gap rotating electric machine includes a pair of rotors fixed to a rotating shaft, a stator, a holding member holding the stator, and a housing. The stator includes cores arranged in a circumferential direction of the rotating shaft, and coils wound around the cores. The holding member and the housing are conductive. The holding member includes an outer peripheral portion firmly fixed on an inner wall of the housing, and a protruding portion protruding from the outer peripheral portion toward the rotating shaft. The protruding portion includes a plurality of protruding portions in the circumferential direction of the rotating shaft. The core is held by a pair of the protruding portions adjacent in the circumferential direction of the rotating shaft, and a gap to interrupt a path of eddy currents between distal ends of the pair of the protruding portions is provided between the distal ends. 1. An axial gap rotating electric machine comprising:a pair of rotors fixed to a rotating shaft;a stator between the pair of rotors;a holding member holding the stator; anda housing for housing the pair of rotors, the stator, and the holding member, whereinthe stator includes a plurality of cores arranged in a circumferential direction of the rotating shaft, and coils wound around the cores,the holding member and the housing are conductive,the holding member includes an outer peripheral portion firmly fixed on an inner wall of the housing, and a protruding portion protruding from the outer peripheral portion toward the rotating shaft,the protruding portion includes a plurality of protruding portions in the circumferential direction of the rotating shaft,the core is held by a pair of the protruding portions adjacent in the circumferential direction of the rotating shaft, anda gap to interrupt a path of eddy currents between distal ends of the pair of the protruding portions is provided between the distal ends.2. The axial gap rotating electric machine according to claim 1 ...

Rotor, method for manufacturing rotor, and motor

A rotor used in an outer rotor motor includes a rotor holder in a tubular shape extending along a center axis, a rotor core in a tubular shape extending in an axial direction and being fixed to a surface of the rotor holder, directed radially inward, and permanent magnets bonded to an inner circumferential surface of the rotor core and side by side in a circumferential direction. The rotor core includes projection portions projecting radially inward from the inner circumferential surface of the rotor core. One or more of the projection portions are in a gap between the permanent magnets adjacent to each other in the circumferential direction. Each of the projection portions has an axial length shorter than an axial length of each of the permanent magnets.

ELECTRIC WORK MACHINE

An electric work machine includes a smaller motor. An electric work machine includes a motor including a stator and a rotor rotatable about a rotation axis, and a sensor board including a rotation sensor that detects rotation of the rotor and a plate supporting the rotation sensor. The plate includes a first surface facing an end face of the rotor in an axial direction parallel to the rotation axis and a support area receiving the rotation sensor that faces the end face, and a second surface facing at least a part of the stator. In the axial direction, a distance between the support area and the end face is shorter than a distance between at least a part of the second surface and the end face. 1. An electric work machine , comprising:a motor including a stator and a rotor, the rotor being rotatable about a rotation axis; and a rotation sensor configured to detect rotation of the rotor, and', a first surface facing an end face of the rotor in an axial direction parallel to the rotation axis, the first surface including a support area receiving the rotation sensor that faces the end face of the rotor, and', 'a second surface facing at least a part of the stator,, 'a plate supporting the rotation sensor, the plate including'}], 'a sensor board including'}wherein in the axial direction, a distance between the support area and the end face of the rotor is shorter than a distance between at least a part of the second surface and the end face of the rotor.2. The electric work machine according to claim 1 , whereinthe second surface includes a fastening area fastened to at least a part of the stator.3. The electric work machine according to claim 2 , whereinthe second surface includes a non-contact area at least partially surrounding the fastening area, andin the axial direction, the distance between the support area and the end face of the rotor is shorter than a distance between the non-contact area and the end face of the rotor.4. The electric work machine according to ...

MAGNETIC WAVE GEAR DEVICE

A magnetic wave gear device (A, B, F) includes: a first member (), a second member (), and a third member () which are rotatable relative to one another around a rotation axis (R). The second member () is disposed between the first member () and the third member (), and includes magnetic material pieces (). The first member () includes first permanent magnets (A, B). The third member () includes: a plurality of pole teeth (), a pole tooth () being wound with a coil (); and second permanent magnets (B), each second permanent magnet (B) being disposed between pole teeth () next to each other, and the magnetic poles of sides of the second permnanent magnets (B) facing the second member () being the same pole. 1. A magnetic wave gear device comprising:a first member, a second member, and a third member which are rotatable relative to one another around a rotation axis,wherein the second member is disposed between the first and third members, and includes a plurality of magnetic material pieces disposed around the rotation axis,the first member includes a plurality of first permanent magnets facing the second member and disposed around the rotation axis, a plurality of pole teeth facing the second member and disposed around the rotation axis, a pole tooth being wound with a coil, and', 'a plurality of second permanent magnets, each second permanent magnet being disposed between pole teeth next to each other, and magnetic poles of sides of the second permanent magnets facing the second member being the same pole., 'the third member includes2. The magnetic wave gear device according to claim 1 ,wherein the plurality of first permanent magnets are disposed such that magnetic poles of first permanent magnets next to each other are opposite to each other in a radial direction.3. The magnetic wave gear device according to claim 1 ,wherein the plurality of first permanent magnets are disposed such that magnetic poles of sides of the first permanent magnets facing the second ...

Polyphase ac electric motor

Object: To provide a polyphase AC electric motor whereby partial discharge can be suppressed. Resolution Means: The winding of each phase includes a first partial conductor that is an input side partial conductor; an nth partial conductor connected to a neutral point; and second to n-1th partial conductors. Moreover, a partial conductor disposed within the stator adjacent to the first partial conductor of each phase, or a partial conductor including a coil end portion disposed adjacent to a coil end portion where the first partial conductor extends out of the slot, is any of the following: (1) of the intermediate partial conductors, an ath (where a is a natural number greater than or equal to 2) partial conductor of the same phase or a different phase where voltage takes an extreme value when AC voltage is applied from the inverter; (2) any of an a-3th to a-1th partial conductors of the same phase or a different phase, or any of an a+1th to a+3th partial conductors of the same phase or a different phase connected to the intermediate partial conductor taking the extreme value; (3) any of a n-3th to nth partial conductors of the same phase or a different phase.

Rotary electric machine for internal combustion engine and rotor thereof

A rotor has a rotor core. The rotor core has a cylindrical outer cylinder and a bottom plate that extends to one end of the outer cylinder. The bottom plate has a through hole penetrating the bottom plate. The rotor has a partition member. The partition member divides the through hole into a first region and a second region. The partition member crosses over the through hole. The rotary electric machine uses a flow in the first region and a flow in the second region.

LOW PROFILE AXIAL FLUX PERMANENT MAGNET SYNCHRONOUS MOTOR

An apparatus is provided for forming an axial flux permanent magnet synchronous motor. The apparatus includes a stator assembly including a plurality of stator poles spaced about a stator shaft, each comprising a winding. Adjacent pairs of stator poles have a spacing in a circumferential direction approximately equal to or greater than a width of the stator pole. A rotor assembly includes a plurality of rotor poles of alternating magnetic polarity arranged for electrically communicating with the windings of the stator assembly. The ratio of stator poles to rotor poles may be less than 4:6 or, more specifically, less than or equal to about 1:2. 1. An apparatus for forming an axial flux permanent magnet synchronous motor , comprising:a stator assembly including a plurality of stator poles spaced about a stator shaft, the stator poles having a spacing approximately equal to or greater than a width of a single stator pole in the circumferential direction.2. The apparatus of claim 1 , further including a rotor assembly comprising a plurality of rotor poles of alternating magnetic polarity arranged for electrically communicating with a winding associated with each stator pole of the stator assembly.3. The apparatus of claim 2 , wherein a ratio of stator poles to rotor poles is less than or equal to about 1:2.4. The apparatus of claim 3 , wherein the ratio of stator poles to rotor poles is 3:8.5. The apparatus of claim 2 , wherein at least one of the rotor poles has a width in a circumferential direction claim 2 , and the stator pole and winding together have a diameter greater than the width.6. The apparatus of claim 2 , wherein the winding always spans across at least two rotor poles.712.-. (canceled)13. An axial flux permanent magnet synchronous motor claim 2 , comprising:a stator assembly including M stator poles spaced about a stator shaft, each comprising a winding; anda rotor assembly comprising N rotor poles of alternating magnetic polarity arranged for ...

DISC-TYPE ELECTRIC MACHINE WITH AMORPHOUS IRON ALLOY AXIAL MAGNETIC CIRCUIT AS WELL AS ITS MANUFACTURING METHOD AND STATOR ASSEMBLY

A disc-type electric machine with amorphous iron alloy axial magnetic circuit, its stator iron core with an axial center through hole is processed into a cylinder made from amorphous iron alloy lamination, and its outer cylindrical surface is uniformly processed with a plurality of equi-spaced axial armature slots towards the center axial line. In the stator iron core embedded winding assemblies with the same number as the armature slots, each winding assembly comprises a winding wire frame matched with the armature slot, each stator winding arranged respectively in a slot of the winding wire frame and a magnetic conducting body arranged in a through hole of the winding wire frame. The said disc-type electric machine has short axial size, less moving components, small eddy current loss, excellent high-frequency characteristic, low temperature rising, high efficiency, high power density, high material utilization rate and high efficient energy-saving. 1. A disc-type electric machine with amorphous iron alloy axial magnetic circuit , comprises a shell , an end cover , a stator assembly , a rotor assembly and an electric machine shaft matched with the said stator assembly; one end face of the said stator assembly is fixed on the inner face of the said end cover axially; the said rotor assembly is fixed on the said electric machine shaft , and close to the other end face of the said stator assembly in parallel , thus to forming an axial air gap between them; the said electric machine shaft is rotatably supported on the position determined by the said end cover and/or shell , the said end cover is fixed at the open end of the said shell; the said stator assembly comprises a stator iron core , wherein:The said stator iron core is processed into a cylinder with an axial central through-hole from the amorphous iron alloy lamination, and the outer cylindrical surface of the stator iron core is uniformly processed with a plurality of equi-spaced axial armature slots towards ...

MACHINE COOLING SYSTEMS

We describe a method of cooling an axial flux permanent magnet machine, the machine having a stator comprising a stator housing enclosing a set of coils wound on respective stator bars and disposed circumferentially at intervals about an axis of the machine, and a rotor bearing a set of permanent magnets and mounted for rotation about said axis, and wherein said rotor and stator are spaced apart along said axis to define a gap therebetween in which magnetic flux in the machine is generally in an axial direction, the method comprising: flowing a coolant through said stator housing around said coils such that said coolant flows between said coils; and controlling said coolant flow between said coils by controlling a gap between adjacent said coils; wherein said controlling of said gap comprises: providing each of said coils with a single layer of windings over said stator bar, said layer of windings comprising a ribbon-shaped wire having a greater width across a surface of the ribbon than thickness through the ribbon; wherein said windings are stacked horizontally along said stator bar such that adjacent ribbon surfaces of said ribbon abut one another, wherein said width of said ribbon defines a distance across a said coil perpendicular to a direction in which said windings are stacked; and controlling said gap by controlling said distance across said coil. 1. A method of cooling an axial flux permanent magnet machine , the machine having a stator comprising a stator housing enclosing a set of coils wound on respective stator bars and disposed circumferentially at intervals about an axis of the machine , and a rotor bearing a set of permanent magnets and mounted for rotation about said axis , and wherein said rotor and stator are spaced apart along said axis to define a gap therebetween in which magnetic flux in the machine is generally in an axial direction , the method comprising:flowing a coolant through said stator housing around said coils such that said coolant ...

STATORS AND COILS FOR AXIAL-FLUX DYNAMOELECTRIC MACHINES

A stator assembly includes a stator core defined by an inner periphery and an outer periphery, and a plurality of coils. The stator core includes a stator yoke. Each coil of the plurality of coils includes a first set of segments and a second set of segments each extending between the inner periphery and the outer periphery of the stator core. The first set of segments is arranged to form a first coil portion having a “V” shape and the second set of segments is arranged to form a second coil portion having a “V” shape. The first coil portion and the second coil portion each have a vertex and two ends. The ends of the first coil portion are coupled to the ends of the second coil portion. Other example stators, and example dynamoelectric machines and compressors including one or more stators are also disclosed. 1. An axial-flux dynamoelectric machine comprising:at least one rotor, andat least one stator adjacent the at least one rotor in an axial direction, the at least one stator defined by an inner periphery and an outer periphery, the at least one stator including a stator yoke, a plurality of teeth extending from the stator yoke, and a plurality of coils, at least one of the plurality of coils configured to form a winding, the plurality of teeth spaced apart from one another to define a plurality of slots for receiving the plurality of coils, each coil of the plurality of coils including a first set of segments and a second set of segments each extending between the inner periphery and the outer periphery of the stator, the first set of segments arranged to form a first coil portion having a “V” shape relative to a cross-section of the stator, the second set of segments arranged to form a second coil portion having a “V” shape relative to a cross-section of the stator, the first coil portion and the second coil portion each having a vertex and two ends, and the ends of the first coil portion coupled to the ends of the second coil portion.2. The machine of wherein ...

STATOR FOR AN AXIAL FLUX MACHINE WITH A STATOR RING COMPOSED OF MODULES

This invention relates to a stator for an axial flux electromagnetic machine, with the stator forming a ring () having two substantially circular faces () connected by a thickness comprising windings () regularly distributed in the ring (). Each winding () is carried by a unit portion () having a core () around which the winding () is wound. The unit portions () are arranged concentrically edge-to-edge with respect to one another and have securing means () with a support member () which is part or not of a casing housing the ring () carried either by axial and lateral faces of each unit portion () edge-to-edge or by at least one upper or lower face of with each unit portion being part of a substantially circular face. 1111a,b. A Stator intended for an axial flux electromagnetic machine , with the stator forming a ring () having two substantially circular opposite faces () ,{'b': 4', '1', '1', '4', '5', '3', '4', '1, 'i': a,', 'b, 'with the stator being comprised of several unit portions () defining the two substantially circular opposite faces (), each unit portion () having a core () around which is wound the winding (), the unit portions () forming at least partially the ring () being arranged concentrically with respect to one another, characterised in that{'b': 4', '1', '1, 'i': a,', 'b, 'the unit portions () continuously define the two substantially circular opposite faces () by being arranged concentrically edge to edge with respect to one another and'}{'b': 12', '12', '14', '6', '4, 'i': 'a,', 'have securing means (, ) with a support member (), carried by axial and lateral faces of each unit portion () edge to edge with an adjacent unit portion.'}241. The stator of claim 1 , wherein each unit portion () has an assembly of cores placed against one another radially to the ring ().36. The stator of claim 1 , wherein the support member () is an integral part of the casing or is an added part secured to the casing.45413134114411114444414aaabbaa,b. The stator of ...

STATOR OF BRUSHLESS MOTOR, BRUSHLESS MOTOR, AND METHOD OF MANUFACTURING STATOR OF BRUSHLESS MOTOR

A stator of a brushless motor includes a stator core and a plurality of coils. The stator core includes a base portion having an annular plate shape and a plurality of teeth protruding from one surface of the base portion in an axial direction and disposed in a circumferential direction. The plurality of coils is respectively wound by concentrated winding along peripheral surfaces of the plurality of teeth. The base portion includes an inner circumferential edge that is recessed radially outward from an inner end of each of the plurality of teeth or the base portion includes an outer circumferential edge that is recessed radially inward from an outer end of each of the plurality of teeth. 1. A stator of a brushless motor , the stator comprising:a stator core including a base portion having an annular plate shape and a plurality of teeth protruding from one surface of the base portion in an axial direction and disposed in a circumferential direction; anda plurality of coils respectively wound by concentrated winding along peripheral surfaces of the plurality of teeth,wherein the base portion includes an inner circumferential edge that is recessed radially outward from an inner end of each of the plurality of teeth or the base portion includes an outer circumferential edge that is recessed radially inward from an outer end of each of the plurality of teeth.2. The stator of a brushless motor according to claim 1 , whereinin a mode in which the inner circumferential edge of the base portion is recessed radially outward from the inner ends of the teeth, the outer circumferential edge of the base portion extends radially outward from the outer ends of the teeth, orin a mode in which the outer circumferential edge of the base portion is recessed radially inward from the outer ends of the teeth, the inner circumferential edge of the base portion extends radially inward from the inner ends of the teeth.3. The stator of a brushless motor according to claim 2 , whereinan ...

TACTILE FEEDBACK MECHANISM

The present disclosure provides a vibration device, including a stator, an eccentric wheel and an electromagnetic driving assembly. The eccentric wheel rotates around a rotating shaft relative to the stator. The electromagnetic driving assembly includes at least one magnetic element and an induction coil. The at least one magnetic element is disposed on the eccentric wheel. The induction coil corresponds to the magnetic element, and the induction coil is disposed on the stator. When a current is applied to the induction coil, the induction coil acts with the magnetic element to generate an electromagnetic force to drive the eccentric wheel to rotate around the rotating shaft, so that the vibration device generates a vibration. The rotating shaft is disposed on the stator. 1. A tactile feedback mechanism , comprising:a fixed portion;a first movable portion, moving relative to the fixed portion;a first driving assembly, driving the first movable portion to move along a first direction relative to the fixed portion;a second movable portion, moving relative to the fixed portion and the first movable portion; anda second driving assembly, driving the second movable portion to move along a second direction relative to the fixed portion;wherein the first direction and the second direction are different;wherein the first movable portion and the second movable portion do not interfere with their respective movements.2. The tactile feedback mechanism as claimed in claim 1 , further comprising:a first resilient element, connected the fixed portion and the first movable portion; anda second resilient element, connected the fixed portion and the second movable portion.3. The tactile feedback mechanism as claimed in claim 2 , further comprising another first resilient element claim 2 , wherein the two first resilient elements are connected to opposite sides of the first movable portion claim 2 , and the two first resilient elements are disposed along the first direction.4. The ...

Shaft-Driven Electrical Device

A shaft-driven electrical device is disclosed. The shaft-driven electrical device may be for a piston-aircraft engine or a turbine aircraft engine. The shaft-driven electrical device for a piston-aircraft engine may include an engine, a plurality of coils, a flywheel, an output shaft and a spinner. The shaft-driven electrical device for a turbine aircraft engine may include an engine, a plurality of coils, a propeller spinner backplate, an output shaft and a spinner. The shaft-driven electrical device may serve as an electric generator, an electric motor, or a starter.

ELECTRIC MACHINE, ROTOR AND ASSOCIATED METHOD

A rotor for connection to a rotating member for use in an electric machine is provided. The rotor includes a first member connected to the rotating member and generally positioned perpendicularly thereto and a second member connected to one of the rotating member and the first member.

Method for Operating an Electric Motor

The invention relates to a method for operating an electric motor (I), the electric motor (I) comprising at least one first stator () with at least three coils () and a rotor () with at least two magnets (), the first stator () and the rotor () being adjacently arranged in an axial direction (), and the coils () being adjacently arranged in a peripheral direction (IO). The electric motor (I) is operated at least in the following two states: a) in a first state, the coils () are operated by respectively different phases of a three-phase current, and the rotor () is rotated about an axis of rotation (); and b) in a second state, the coils () are operated by an equal-phase alternating current. 1. A method for operating an electric motor , wherein the electric motor has at least one first stator with at least three coils and a rotor with at least two magnets; wherein the first stator and the rotor are arranged one next to the other along an axial direction , wherein the coils are arranged one next to the other along a circumferential direction , wherein the electric motor is operated at least in the following two states:a) in a first state, the coils are operated with respective different phases of a three-phase current and the rotor is made to rotate about a rotational axis;b) in a second state, the coils are operated with an alternating current with the same phase.2. The method as claimed in claim 1 , wherein the electric motor is operated in both states claim 1 , so that the rotor is driven by the operation of the electric motor in the first state and chronologically in parallel a body is heated by the operation of the electric motor in the second state.3. The method as claimed in claim 1 , wherein the electric motor has a second stator with at least three coils; wherein the rotor is arranged along the axial direction between the first stator and the second stator.4. The method as claimed in claim 1 , wherein an electrically conductive body claim 1 , which is heated ...

Electric motor with positional sensing

An electric motor with positional sensing is disclosed. A group of permanent magnets are physically attached to a group of piezoelectric actuators which push them toward or pull them away from a second group of permanent magnets when the piezoelectric actuators are electrically activated and/or when the load on the motor is moved by an external force. Alternate configurations using electromagnets are also disclosed. The current induced in the piezoelectric actuators is used to detect the position of the motor and/or elements affixed to the motor.A novel configuration for the groups of electromagnets which maximizes efficiency in a piezoelectrically actuated motor is also disclosed.

ELECTRIC GENERATOR HAVING MULTIPLE ELECTRICAL MACHINES

An electric generator that converts mechanical energy to electrical energy includes, among other things, a first axial flow electrical machine that includes a first rotor mounted in rotation about a first axis and surrounding a first stator; a second axial flow electrical machine that includes a second rotor coaxial to the first rotor and surrounding a second stator; and first azimuthal securing means that joins together the first and second rotors so that the first and second rotors can be simultaneously set in rotation about the first axis. The electrical generator may be used as part of a wind turbine. 1. An electric generator allowing the conversion of mechanical energy to electrical energy , comprising at least:a first axial flow electrical machine comprising a first rotor mounted in rotation about a first axis and surrounding a first stator to generate a first magnetic flow;a second axial flow electrical machine comprising a second rotor separate from the first rotor, which is coaxial to the first rotor and surrounds a second stator to generate a second magnetic flow; andfirst azimuthal securing means to secure the first and second rotors so that the first and second rotors can be simultaneously set in rotation about the first axis to generate the first and second magnetic flows simultaneously.2. The electric generator according to claim 1 , wherein the first azimuthal securing means also form axial securing means to secure together the first and second rotors along the first axis.3. The electric generator according to claim 1 , wherein the first and second rotors each comprise first and second walls arranged on either side of the first and second stators respectively claim 1 , so as to respectively define a first annular housing and a second annular housing configured to receive the first and second stators respectively claim 1 , the second wall of the first rotor and the first wall of the second rotor being arranged facing one another and the first azimuthal ...

Axial flux permanent magnet motor for ball screw cam elevator mechanism for reduced-head hard disk drive

An approach to a reduced-head hard disk drive (HDD) involves an actuator elevator subsystem that includes a ball screw cam assembly with an axial flux permanent magnet (AFPM) motor affixed to a cam screw to drive rotation of the screw, which drives translation of an actuator arm assembly so that a corresponding pair of read-write heads can access different magnetic-recording disks of a multiple-disk stack.

Axial Gap-Type Rotary Electrical Machine

This axial gap-type rotary electrical machine has: a stator in which a plurality of core units each configured from a core, a coil, and a bobbin are disposed centering around a rotary shaft, in an annular shape along the inner circumferential surface of a housing; and a rotor that is face-to-face with a cross-sectional surface of the core through a predetermined gap in the radial direction of the rotary shaft. The rotor comprises a rotor base which is provided with a disk-shaped permanent magnet and an end portion gripping the outer circumference of the permanent magnet, and which holds the permanent magnet. The thickness of the end portion of the rotor base decreases toward the stator side. In particular, the end portion of the rotor base is formed in a tapered shape in which the thickness of the end portion decreases toward the stator side. In addition, the end portion of the rotor base is formed such that high portions and low portions are periodically provided over the circumferential direction. Accordingly, the magnetic flux from the stator can be efficiently returned to the rotor, and a high output may be maintained. 1. An axial gap-type rotary electrical machine comprising: a stator in which a plurality of core units formed by a core , a coil and a bobbin is arranged annularly along an inner circumferential surface of a housing around a rotary shaft; and a rotor being face-to-face with an end surface of the core via a predetermined gap in a radial direction of the rotary shaft ,wherein the rotor has a disk-shaped permanent magnet, and a rotor base having an end portion gripped at an outer circumference of the permanent magnet and holding the permanent magnet, anda thickness of the end portion of the rotor base is thin toward the stator side.2. The axial gap-type rotary electrical machine according to claim 1 , wherein an upper end of the end portion of the rotor base reaches an upper end surface of the permanent magnet.3. The axial gap-type rotary electrical ...

Centrifugal blood pump with hydrodynamic bearing

A centrifugal blood pump without a mechanical bearing comprises a pump casing ( 1 ), an impeller ( 9 ) arranged in the pump casing rotatably about the central axis and freely movable axially and radially within a limited clearance. The impeller has per-manent magnets or permanently magnetized magnetic regions (N/S) which cooperate with an electromagnetic drive to set the impeller rotating. A circular wall ( 12 ) or circularly arranged wall sections are provided within the pump casing, their inner surfaces defining a radial clearance together with the outer circumference of the impeller to form a hydrodynamic radial bearing for the impeller.

STATOR PORTION FOR AN ELECTRIC MACHINE COMPRISING AN PERMANENT MAGNET ROTOR

A ferromagnetic core for a stator coil of a permanent magnet electric rotary machine, wherein the ferromagnetic core includes a compound including a polymer matrix composition and a functional filler, the functional filler including a material selected from ferromagnetic material, magnetic material, and a combination thereof. The ferromagnetic core includes at least one fluid channel extending through the core. A stator coil for an electric rotary machine, including a ferromagnetic core and at least one winding of a conductor wound around the core. A stator for an electric rotary machine, including a stator frame around a central axis, having an opening for receiving a fluid flow and stator coils. A permanent magnet electric rotary machine including a rotational shaft, a stator, a rotor connected to the rotational shaft, wherein the rotor is provided with permanent magnets, the permanent magnets facing the ferromagnetic cores of stator coils of the stator. The rotor includes ventilation means for in operation generating a fluid flow through the fluid channels of the ferromagnetic cores. 1. Ferromagnetic core for a stator coil of a permanent magnet electric rotary machine , wherein said ferromagnetic core comprises a compound comprising a polymer matrix composition and a functional filler , the functional filler comprising a material selected from ferromagnetic material , magnetic material , and a combination thereof ,characterized bysaid ferromagnetic core comprising at least one fluid channel extending through said core removing excess heat from the core.2. Ferromagnetic core according to claim 1 , wherein the filler has a weight ratio with respect to said polymer matrix composition in a range of 0.5 to 5.3. Ferromagnetic core according to any one of the preceding claims claim 1 , wherein said functional filler in said core is non-uniformly divided claim 1 , in particular a concentration at the axial ends of the core is lower than a concentration at the centre of ...

Motor, Rotation Period Detection Method Thereof, Motor Rotation Period Detection Sensor Assembly, And Power Generator

A motor which is capable of realizing further space saving and cost reduction. A cylindrical outer rotor 11 is rotatable around a central axis CL thereof. A plurality of magnets 13 are arranged at equal intervals on an inner circumferential surface of the outer rotor 11. Three Hall elements 15 to 17 are arranged to oppose the respective magnets 13 and detect switching of magnetic poles caused by movement of the respective magnets 13 passing through each vicinity of the Hall elements 15 to 17 when the outer rotor 11 rotates. The Hall element 17 is comprised of a linear Hall element that outputs a linear signal representing a linear change of a magnetic flux density caused by movement of the respective magnets 13. One of the respective magnets 13 is arranged offset along the central axis CL as compared to the other magnets 13.

Rotating electrical machine

A rotating electrical machine includes a rotor and a magnet unit. The rotating electrical machine also includes a cylindrical stator and a housing. The stator is equipped with a stator winding made up of a plurality of phase windings. The stator is arranged coaxially with the rotor and faces the rotor. The housing has the rotor and the stator disposed therein. The rotor includes a cylindrical magnet retainer to which the magnet unit is secured and an intermediate portion which connects between a rotating shaft of the rotor and the magnet retainer and extends in a radial direction of the rotating shaft. A first region located radially inside an inner peripheral surface of a magnetic circuit component made up of the stator and the rotor is greater in volume than a second region between the inner peripheral surface of the magnetic circuit component and the housing in the radial direction.

ELECTRIC MACHINE

An electric motor has a first carrier having an array of electromagnetic elements and a second carrier having electromagnetic elements defining magnetic poles. The first and second carriers each define an axis. An airgap is formed between the first and second carriers when in an operational position. An inner thrust bearing connects the first and second carriers and is arranged to allow relative rotary motion of the carriers. An outer thrust bearing connects the first and second carriers and is arranged to allow relative rotary motion of the carriers. The electromagnetic elements of each of the first and second carriers are arranged radially inward of the outer thrust bearing and radially outward of the inner thrust bearing. The inner thrust bearing and the outer thrust bearing are arranged to maintain the airgap against a magnetic attraction of the electromagnetic elements of the first and second carriers. 1. An electric machine comprising:a stator having an array of electromagnetic elements, the stator defining a stator axis;a rotor having permanent magnetic elements defining magnetic poles, the rotor carrier defining a center rotor axis;an airgap being formed between the rotor and the stator when the stator and the rotor are in an operational position;an inner bearing connecting the rotor and the stator, the inner bearing being arranged to allow relative rotary motion of the stator and the rotor;an outer bearing connecting the rotor and the stator, the outer bearing being arranged to allow relative rotary motion of the stator and the rotor;the electromagnetic elements of the stator and the permanent magnetic elements of the rotor having a magnetic attraction between each other; andwherein the rotor further comprises a plurality of posts in which the permanent magnetic elements of the rotor are placed between the plurality of posts, and the rotor further comprising a plurality of inner flux restrictors lying radially inward from the plurality of posts and radially ...

Electromagnetic motor or generator comprising a rotor with magnetized structures comprising individual magnets and a stator with concentric windings

A motor or electromagnetic generator with a rotor ( 3 ) and at least one stator ( 1, 2 ), the rotor ( 3 ) comprising having permanent magnets ( 12 ) rotating around a median shaft and the stator ( 1, 2 ) having windings ( 5 ). The rotor ( 3 ) comprises magnet structures forming magnet poles composed of a plurality of unit magnets ( 15 ), covering discs ( 17 ) being axially arranged on each of two opposite axial faces of the rotor ( 3 ), the covering discs ( 17 ) being made of a composite material, the covering discs ( 17 ) and the magnet structures ( 12 ) being coated in an outer coating layer of composite material defining the outer contour of said at least one rotor ( 3 ). The stator ( 1, 2 ) comprises concentric windings ( 5 ) comprising a series of blocks ( 4 ) with the windings ( 5 ) wound around each block ( 4 ), the blocks ( 4 ) being rigidly attached to each other.

CLOSED LOOP LEVERAGING ELECTROMAGNETIC MOTOR

The invention is a high torque and energy efficient electric motor. With a larger diameter shaft and shortened length, the design of the motor is pancaked. With high torque, the electric motor can operate efficiently by taking advantage of repelling and attracting forces from magnetic fields. Two embodiments of the invention for the high torque motor are designed to be energy efficient utilizing lifting design electromagnets, and low current flow in relation to the magnetic field produced is a key element of the invention. 1. A high torque electric motor comprising a number of assemblies which are in pancake shape and are paralleled to each other , wherein each of said assemblies comprises a rotor and a stator; wherein said rotors are mechanically coupled to a shaft and said stators are mechanically coupled to a housing; wherein each of said rotors is in a cylindrical shape coaxial with said shaft and holds at least two electromagnets , each of said electromagnets having one magnetic pole facing outwardly; wherein each of said stators is in an annular shape coaxial with said shaft and holds at least two magnetic units; wherein each of said magnetic units is in an annular sector shape consisting of an intercepted arc of a first circle merged with said stator's outer edge , two radius sides , and an inner side; wherein said inner side is an intercepted arc of an ellipse , a parabola , or a second circle with a radius larger than said first circle's radius , such that one of said two radius sides is longer than the other radius side and an air gap between each magnet unit and said rotor increases gradually from said magnet unit's longer side to its shorter side; wherein said magnetic units are evenly coupled in said annular shape and each magnet unit's longer side is adjacent to a neighboring magnet unit's shorter side; wherein when electric current travels through said electromagnets in said rotor , magnetic fields of said electromagnets interact with magnetic fields ...

DISC ROTOR- AND AXIAL FLUX-TYPE ROTATING ELECTRIC MACHINE

The aim of the invention is to provide a simple winding structure on the stator of an axial flux machine and to simultaneously minimize the otherwise normal use of material by means of additional structural measures. The disc rotor- and axial flux-type rotating electric machine consists of at least of two disc-shaped rotors () equipped with permanent magnets. A stator () with axially arranged coils () is located between the rotors (), and the coils () correspond to the permanent magnets () of the rotors (). A shaft () is mounted on the stator (), and the shaft () can additionally be mounted on stator discs () lying outside of the rotors (). The rotors are secured to the shaft (), and the stator () or the stator discs () are secured to a base or a housing (). 11243132525611522699. A rotating electric machine of disc-rotor and axial-flux type of construction , characterized in that , between at least two disc-shaped rotors () equipped with permanent magnets , there are provided a stator () with coils () arranged axially between the permanent magnets () of the rotors () and corresponding to the permanent magnets () , and in that the stator () has , centrally , a shaft () which is mounted on the stator () , and/or in that the shaft () is mounted on stator discs () situated outside the rotors () , and the rotors () are fastened to the shaft () , and the stator () or stators () and the stator discs () are fastened to a base plate () or housing ().2423143. The rotating electric machine as claimed in claim 1 , characterized in that the number of coils () of the stator () and the number of permanent magnets () on the rotor () are preferably arranged in a ratio of three coils () to four permanent magnets () or an integer multiple thereof.3314. The rotating electric machine as claimed in claim 1 , characterized in that the permanent magnets () are incorporated into the rotors () in continuous fashion on one claim 1 , two or more circular paths claim 1 , and the coils () are ...

ENHANCEMENTS TO COOLING MEANS FOR AXIAL FLUX GENERATORS

A generator comprising a series of spaced annular stators sandwiched between a series of rotors, the rotors each being separated by annular collars, the annular collars defining a central cavity; at least one cooling gas source for supplying gas to the central cavity; vents through the annular collars for providing a means of egress for the cooling gas from the central cavity radially outwards over the rotors and the annular stators and the front, rear and side walls of coils embedded in the annular stators. 1. A generator comprising:at least one annular stator having an inner circumference and an outer circumference and a plurality of spaced coils within and around an axis of the annular stator; andat least one cooling gap for the flow of cooling fluid in the annular stator between adjacent coils of the plurality of coils, the at least one cooling gap having an inner opening in the inner circumference and an outer opening in the outer circumference.2. The generator of claim 1 , wherein the at least one cooling gap accommodates a sealed channel for conveying the cooling fluid.3. The generator of claim 2 , wherein the sealed channel is formed of a non-magnetic material with a thermal conductivity of at least 0.5 W/mK claim 2 , preferably at least 1 W/mK claim 2 , more preferably at least 10 W/mK.4. The generator of claim 2 , wherein the sealed channel is formed of a non-electrically conducting material or has slits in it to prevent eddy currents being induced along its length.5. The generator of claim 2 , wherein the sealed channel is formed of a metal.6. The generator of claim 2 , wherein the sealed channel is formed as a tube.7. The generator of claim 1 , further comprising an inlet for the cooling gas into the at least one cooling gap which is positioned axially in-line with the coils of the associated adjacent coils and/or circumferentially in-line with the at least one cooling gap.8. The generator of claim 1 , further comprising an outlet for the cooling gas out ...

ROTOR FOR AN AXIAL FLUX ELECTROMAGNETIC MOTOR OR GENERATOR WITH SEMI-EMBEDDED MAGNETS AND AXIAL HOLDING MEANS

This invention relates to a rotor () with semi-embedded magnets for an axial flux motor or generator, comprising a body () in the form of a disc with two circular faces, the disc having an inner and an outer periphery which delimit a recess for a rotating shaft (), at least two permanent magnets () being applied against at least one of the two circular faces of the body () being held on said face by holding means ( ), with a gap between the at least two magnets (). The holding means () are in the form of at least one lateral, axial holding means () housed in the gap comprising at least one tenon () locally covering at least one of the two magnets () or an axial holding means () forming a ring. 111. A rotor () intended for an axial flux electromagnetic generator or a motor , the rotor () comprising:{'b': 2', '7, 'a body () in the form of a disc having two circular faces connected by a thickness, the disc being delimited between an outer periphery and an inner periphery, the inner periphery delimiting a recess for a rotating shaft (),'}{'b': 2', '2, 'i': 'a', 'at least two permanent magnets () being applied against at least one of the two circular faces of the body (), referred to as the support face,'}{'b': 3', '5', '5', '6', '6', '2, 'i': a,', 'a,', 'a', 'a, 'by each being maintained on said face by means of maintaining (, , ), with an interval left between said at least two magnets (),'}characterised in thatthe magnets are semi-embedded magnets,{'b': 3', '3', '5', '5', '6', '6', '3', '3', '3', '2', '5', '6', '2, 'i': a,', 'a,', 'a', 'a', 'a', 'a', 'a,', 'a', 'a, 'the means of maintaining (, , , ) being in the form of at least one lateral means of axial maintaining (, ) housed in the interval comprising at least one tenon () locally and directly covering at least one of said at least two semi-embedded magnets () or a means of axial maintaining () extending circularly all around the inner and/or outer periphery of the body by forming a ring locally and directly ...

Dual rotor-type motor having improved stator structure, and compressor comprising same

A dual rotor-type motor, according to one embodiment of the present invention, comprises: a stator having a coil wound therearound; an outer rotor; and an inner rotor, wherein the stator comprises inner teeth facing the inner rotor, and outer teeth facing the outer rotor, wherein the inner teeth are misaligned in a rotating direction by as much as an angle configured with respect to the outer teeth, and thus the present invention may enable the reduction of a torque ripple to a satisfying level, even without having to change the design of the stator structure into a complicated form.

Electromagnetic system with magnetically coupled rotors

A magnetic rotor arrangement is provided, having a primary rotor including an array of magnets arranged to provide alternating polarity around the outside of the primary rotor and at least one auxiliary rotor including an array of magnets arranged to provide alternating polarity around the outside of the auxiliary rotor. The primary rotor and each auxiliary rotor are arranged such that when the primary rotor is rotated, the rotation of the primary rotor magnetically induces rotation of each auxiliary rotor.

Inserted Permanent Magnet Rotor for an External Rotor Electric Machine

The external rotor for an electric machine includes a cylindrically shaped receptacle having a peripheral wall and a magnet-receiving assembly including segments assembled to the inner surface of the peripheral wall so as to define a cylindrically shaped stack. The segments are shaped so as to yield magnet- receiving portions in the ring-shaped stack, and permanent magnets are secured to the magnet-receiving portion of the magnet receiving assembly.

ELECTRIC GENERATOR HAVING MULTIPLE ELECTRICAL MACHINES

An electric generator that converts mechanical energy to electrical energy includes, among other things, a first axial flow electrical machine that includes a first rotor mounted in rotation about a first axis and surrounding a first stator; a second axial flow electrical machine that includes a second rotor coaxial to the first rotor and surrounding a second stator; and first azimuthal securing means that joins together the first and second rotors so that the first and second rotors can be simultaneously set in rotation about the first axis. The electrical generator may be used as part of a wind turbine. 1. An electric generator allowing the conversion of mechanical energy to electrical energy , comprising at least:a first axial flow electrical machine comprising a first rotor mounted in rotation about a first axis and surrounding a first stator to generate a first magnetic flow;a second axial flow electrical machine comprising a second rotor separate from the first rotor, which is coaxial to the first rotor and surrounds a second stator to generate a second magnetic flow; andfirst azimuthal securing means to secure the first and second rotors so that the first and second rotors can be simultaneously set in rotation about the first axis to generate the first and second magnetic flows simultaneously.2. The electric generator according to claim 1 , wherein the first azimuthal securing means also form axial securing means to secure together the first and second rotors along the first axis.3. The electric generator according to claim 1 , wherein the first and second rotors each comprise first and second walls arranged on either side of the first and second stators respectively claim 1 , so as to respectively define a first annular housing and a second annular housing configured to receive the first and second stators respectively claim 1 , the second wall of the first rotor and the first wall of the second rotor being arranged facing one another and the first azimuthal ...

DISC ROTOR MOTOR

A disc rotor motor is demonstrated, having at least one stator that has at least one electrical stator winding and stator teeth, which have a tooth neck composed of a soft magnetic powder composite, and having at least one disc-shaped rotor, which has permanent magnetic poles composed exclusively of ferrite magnets at least for producing torque, with the rotor and stator oriented parallel to each other and spaced apart from each other by an axial gap. In order to find an optimum between costs, weight, and overall size as well as power and torque density, the invention proposes that the stator teeth each end in a tooth end that adjoins their tooth neck and is composed of a soft magnetic powdered composite, which tooth end widens out in its cross-sectional area in comparison to the tooth neck. 1. A disc rotor motor , comprising:at least one stator that has at least one electrical stator winding and a plurality of stator teeth, each of the stator teeth having a tooth neck composed of a soft magnetic powder composite, wherein each of the stator teeth ends in a tooth end that adjoins a respective tooth neck and is composed of a soft magnetic powdered composite, and each tooth end widens out in its cross-directional area in comparison to the respective tooth neck; andat least one disc-shaped rotor having permanent magnetic poles composed exclusively of ferrite magnets at least for producing torque, wherein the rotor and stator being are oriented parallel to each other and spaced apart from each other by an axial gap.2. The disc rotor motor according to claim 1 , wherein a quotient of a largest cross-sectional area of the tooth end and a smallest cross-sectional area of the respective tooth neck is greater than 2.3. The disc rotor motor according to claim 1 , wherein the tooth neck and tooth end are composed of the same soft magnetic powdered composite.4. The disc rotor motor according to claim 3 , wherein the tooth neck and tooth end claim 3 , manufactured as one claim 3 ...

Magnetic motor

A magnetic motor includes a rotor and a stator, in which there are magnets and materials of high magnetic permeability. The stator magnets are arranged with surfaces facing the rotor magnets in a staggered arrangement. The motor may be used to boost torque, for example in bicycles.

AXIAL GAP MOTOR AND METHOD FOR MANUFACTURING ROTOR

An axial gap motor includes: a first stator and a second stator disposed to be opposite to each other in an axial direction; and a rotor including a first magnet layer in which a plurality of first main magnetic pole magnets and a plurality of first auxiliary pole magnets are arranged in a Halbach array in a circumferential direction to increase a magnetic field strength toward the first stator and a second magnet layer in which a plurality of second main magnetic pole magnets and a plurality of second auxiliary pole magnets are arranged in a Halbach array in the circumferential direction to increase a magnetic field strength toward the second stator between the first stator and the second stator. 1. An axial gap motor , comprising:a first stator and a second stator disposed to be opposite to each other in an axial direction; anda rotor including a first magnet layer in which a plurality of first main magnetic pole magnets and a plurality of first auxiliary pole magnets are arranged in a Halbach array in a circumferential direction to increase a magnetic field strength toward the first stator and a second magnet layer in which a plurality of second main magnetic pole magnets and a plurality of second auxiliary pole magnets are arranged in a Halbach array in the circumferential direction to increase a magnetic field strength toward the second stator between the first stator and the second stator.2. The axial gap motor according to claim 1 , wherein the first magnet layer includes a first front surface and a first back surface and a magnetic field strength on the first front surface side is higher than that on the first back surface side claim 1 ,the second magnet layer includes a second front surface and a second back surface and a magnetic field strength on the second front surface side is higher than that on the second back surface side, andthe first magnet layer and the second magnet layer are disposed such that the first back surface and the second back surface ...

Modified Halbach Array Generator

A generator is described that includes a modified elongated Halbach array of magnets and a second array of magnets that interact to provide a flux field, which in turn interacts with a coil to generate an electrical current. The modified Halbach array includes two sets of magnets that are interspersed. In a first set of magnets the individual magnetic units are arranged in groupings of at least two magnets that are adjacent to one another and have the same magnetic orientation. In the second set of magnets utilizes either individual magnetic units or small groupings of individual magnetic units (relative to the first set of magnets) that are arranged in a different magnetic orientation than the first set, but identical to one another. A controller modifies electrical communication between different coils and/or controls inverters associated with the coils in order to control and stabilize electrical output from the generator. 1. A generator , comprising:a first array of magnets disposed in a first magnet configuration comprising a first elongated Halbach configuration;a second array of magnets disposed in a second magnet configuration, wherein the second array of magnets is separated from the first array of magnets by an adjustable gap comprising a ring gap;an actuator coupled to at least one of the first array and the second array, wherein the actuator is configured to adjust the ring gap; anda coil disposed between the first array of magnets and the second array of magnets such that relative movement of the first array of magnets and the second array of magnets with respect to the coil generates an electric current.2. The generator of claim 1 , further comprising a first ring comprising the first array of magnets and a second ring comprising the second array of magnets.3. The generator of claim 2 , wherein at least one of the first ring and the second ring comprises at least one cooling hole positioned to provide cooling on air flow through the generator.4. The ...

Rotor for an electromagnetic motor or generator with radial flux comprising a mesh structure housing individual magnets

A rotor for a motor or for a radial flux electromagnetic generator having a cylindrical support housing a plurality of magnets (4), characterised in that the cylindrical support comprises a cylindrical mesh (5a) having mesh elements each defining a recess (5) for a respective individual magnet (4), each recess (5) having internal dimensions that are just sufficient to allow the introduction of a individual magnet (4) in its interior while leaving a space between the recess (5) and the individual magnet (4) filled by a fibre-reinforced resin, the mesh (5a) being made from a fibre-reinforced insulating material, the rotor comprising a non-conductive composite layer coating the individual magnets (4) and the mesh (5a).

NON-CONTACT CONTINUOUS PIEZOELECTRIC GENERATOR USING MAGNETIC FORCE

Provided is a non-contact continuous piezoelectric generator using magnetic force including N+1 rotor layers each having a circular plate shape and rotated by an external energy source, N stator layers each having a circular plate shape and positioned between the rotor layers, and a support structure configured to support the rotor layers and the stator layers. 4. The non-contact continuous piezoelectric generator using magnetic force of claim 3 , wherein the unit device has a structure capable of being continuously driven on the stator layer having a circular plate shape.5. The non-contact continuous piezoelectric generator using magnetic force of claim 4 , wherein the unit device is restricted in movement in a vertical direction with respect to the stator layer and only allowed to be displaced in a planar direction of the stator layer due to a stopper structure in which one end of the unit device at an inner side is fixed to an inner side of the stator layer claim 4 , and the other end of the unit device at an outer side is formed on upper and lower portions of an outer circumference of the stator layer in the vertical direction with respect to the stator layer.6. The non-contact continuous piezoelectric generator using magnetic force of claim 5 , wherein the unit device includes the permanent magnet (s) claim 5 , the piezoelectric element claim 5 , and stainless steel (SUS) claim 5 , which is an intermediate medium present between the permanent magnet (s) and the piezoelectric element claim 5 , the permanent magnet (s) is bonded to the intermediate medium using an adhesive claim 5 , and the piezoelectric element is also bonded to the intermediate medium using an adhesive.7. The non-contact continuous piezoelectric generator using magnetic force of claim 5 , whereinthe unit device includes a two-layer piezoelectric element, andthe unit device including the two-layer piezoelectric element is composed of an upper piezoelectric element, stainless steel that is an ...

ROTOR FOR MAGNETIC MOTOR

Rotor formed by groups of materials () that orientate the magnetic field and magnets () in spiral lines, with the two magnetic poles of each magnet () facing the stator (). Close to a magnetic pole of the end of the group, the material () that orientates the magnetic field protrudes towards the stator (). This configuration enables to vary the field of each magnetic pole of the rotor which is projected to the stator; in this way, one end of the group of magnets () concentrates a very close magnetic pole in order to interact with the stator () and the opposite magnetic pole moves away gradually in order to decrease the interaction with the stator (). The application is for magnetic motors. 1. A rotor for a magnetic motor comprising:a shaft;a rotor body configured to rotate about the shaft;a plurality of rotor magnets forming a magnetic field, the plurality of rotor magnets: i) being disposed in groups around the shaft at an external circumference of the rotor body, ii) having a plurality of faces, some of the plurality of faces having one magnetic pole, others of the plurality of faces having two magnetic poles, and iii) being separated from each other by a distance;a material that orients the magnetic field; and the plurality of rotor magnets have only one magnetic pole on each of the plurality of faces, one of the faces with a largest surface area being adjacent to a second of the plurality of faces with a next largest surface area, such that the plurality of rotor magnets are disposed adjacent each other from largest surface area to a smallest surface area of the plurality of faces,', 'each group of the plurality of rotor magnets being formed of at least one magnet, the at least one magnet having one end face with two magnetic poles facing the stator,', 'rotor magnets of one group of the plurality of rotor magnets being arranged one after the other with the magnetic poles in attraction in a circular, spiral, staggered or oblique line, and', 'the material that ...

ELECTRIC MACHINE

An electric machine comprise a first carrier having an array of electromagnetic elements and a second carrier having electromagnetic elements defining magnetic poles, the second carrier being arranged to move relative to the first carrier. An airgap is provided between the first carrier and the second carrier. The electromagnetic elements of the first carrier include posts, with slots between the posts, one or more electric conductors in each slot, the posts of the first carrier having a post height in mm. The first carrier and the second carrier together define a size of the electric machine. The magnetic poles having a pole pitch in mm. The size of the motor, pole pitch and post height are selected to fall within a region in a space defined by size, pole pitch and post height that provides a benefit in terms of force or torque per weight per excitation level. 1. An electric machine comprising:a first carrier having an array of electromagnetic elements;a second carrier having electromagnetic elements defining magnetic poles, the second carrier being arranged to move relative to the first carrier;an airgap between the first carrier and the second carrier;the electromagnetic elements of the first carrier including posts, with slots between the posts, the slots having one or more electric conductors in each slot;the second carrier comprising posts and at least a first retaining element for the electromagnetic elements defining magnetic poles; andthe electromagnetic elements of the second carrier having a depth longer than a depth necessary to saturate the posts of the electromagnetic elements of the first carrier.2. The electric machine of in which the electromagnetic elements defining magnetic poles comprise permanent magnets.3. The electric machine of in which the first retaining element is a back iron.4. The electric machine of in which the first retaining element is a side iron.5. The electric machine of in which the first retaining element is an end iron.6. The ...

ELECTRIC MACHINE

An electric machine comprise a first carrier having an array of electromagnetic elements and a second carrier having electromagnetic elements defining magnetic poles, the second carrier being arranged to move relative to the first carrier. An airgap is provided between the first carrier and the second carrier. The electromagnetic elements of the first carrier include posts, with slots between the posts, one or more electric conductors in each slot, the posts of the first carrier having a post height in mm. The first carrier and the second carrier together define a size of the electric machine. The magnetic poles having a pole pitch in mm. The size of the motor, pole pitch and post height are selected to fall within a region in a space defined by size, pole pitch and post height that provides a benefit in terms of force or torque per weight per excitation level. 1. An electric machine , comprising:a first outer carrier comprising electromagnetic elements;a second outer carrier comprising electromagnetic elements;an inner carrier comprising electromagnetic elements and disposed between the first outer carrier and the second outer carrier, either the inner carrier, or both the first outer carrier and the second outer carrier, defining magnetic poles;a spacer element fixedly connecting, the first outer carrier to the second outer carrier; andbushings or low friction coatings disposed between the inner carrier and the first and second outer carriers, and between the inner carrier and the spacer element, for supporting the inner carrier for movement relative to the first outer carrier and the second outer carrier.2. The electric machine of in which the inner carrier defines magnetic poles and the first outer carrier and the second outer carrier each comprise a unitary piece of material on which the electromagnetic elements of the respective carriers are supported.3. The electric machine of in which the first outer carrier and the second outer carrier define magnetic poles ...

BRUSHLESS TYPE MOTOR AND ROTOR FOR A MOTOR

The present invention relates to a brushless type motor and to rotor for brushless type motor with surface magnets. The rotor having an axial extension in which is inserted the shaft having the axial extension a height greater than that of the stator package, and the axial extension also characterized by having a radial extension into the lower base of the magnets, the radial extension having an external radius greater than or equal to the radius of the axial extension, but less than or equal to the external radius of the magnets. The axial and radial extensions being used for fixing the shaft, increasing the moment of inertia, increasing the magnetic flux generated by the magnets and also serving as a base for the assembly of the magnets. 1. Brushless type motor comprising a rotor containing surface magnets , wherein the rotor comprises an axial extension extending towards the end opposite to the coupling part of the shaft , the axial extension having a height greater than that of the limit of the stator , the axial extension further presenting a radial extension projecting adjacently to a lower base of the magnets , said radial extension having an external radius greater than the radius of the rotor surface adjacent to the internal surface of the magnets , but less than or equal to the radius of an external surface of the magnets.2. Motor claim 1 , according to claim 1 , wherein the axial extension of the rotor extends beyond the lower bases of the magnets.3. Motor claim 1 , according to claim 1 , wherein the radial extension extends adjacently to the lower bases of the magnets claim 1 , creating a reference base for axial alignment of the magnets.4. Motor claim 1 , according to claim 1 , wherein the axial extension and radial extension are composed of laminated electric steel.5. Motor claim 1 , according to claim 1 , wherein the axial extension and/ or radial extension comprise a further massive component claim 1 , preferably composed of ferromagnetic material.6. ...

Direct drive rotor with metal coupler

A rotor for an outer rotor-type motor is provided. The rotor includes a metallic coupler and a polymeric frame molded over at least part of the metallic coupler.

MOTOR ROTOR SUPPORT AND METHOD FOR MANUFACTURING SAME

An object of the present invention is to provide a motor rotor support suitable for an axial gap motor and a method for manufacturing the same. The motor rotor support for supporting a magnetic body disposed on a rotor of the motor is configured by laminating single materials each formed from a hot-worked material or a cold-worked material preferably composed of an 18Mn-18Cr nonmagnetic steel. 1. A motor rotor support for supporting a magnetic body disposed on a rotor of a motor ,wherein the support is obtained by laminating single materials each of which is formed from a hot-worked material or a cold-worked material obtained from a nonmagnetic steel and has a relative permeability of less than 1.005 and a 0.2% yield strength at room temperature of 550 MPa or more.2. The motor rotor support according to claim 1 , wherein the single material is a cold-worked material and has a relative permeability of less than 1.005 and a 0.2% yield strength at room temperature of 600 MPa or more.3. The motor rotor support according to claim 1 , wherein the nonmagnetic steel is an 18Mn-18Cr nonmagnetic steel.4. The motor rotor support according to claim 1 , wherein a rare-earth magnet or a non-rare-earth magnet is included as the magnetic body.5. The motor rotor support according to claim 4 , wherein the non-rare-earth magnet is a ferrite magnet.6. The motor rotor support according to claim 1 , wherein a dust core is included as the magnetic body.7. The motor rotor support according to claim 1 , having a lamination structure in which the single materials are bound.8. The motor rotor support according to claim 7 , wherein the binding is any one of caulking claim 7 , screwing claim 7 , welding claim 7 , adhering claim 7 , and outer periphery shrink-fitting with a ring material or a combination thereof.9. A method for manufacturing a motor rotor support for supporting a magnetic body disposed on a rotor of a motor claim 7 , the method comprising:subjecting a nonmagnetic steel to hot ...

AXIAL FLUX HALBACH ROTOR

An axial flux Halbach rotor comprise: a first magnet set and a second magnet set. Further comprises: a plurality of first magnets that are respective featured by their respective first magnetizing directions and are arranged interconnecting to each other by the use of a first connecting element while allowing any two neighboring first magnets to be spaced from each other by a first distance; and the second magnet set further comprises: a plurality of second magnets that are respectively featured by their respective second magnetizing directions and are arranged interconnecting to each other by the use of a second connecting element while allowing any two neighboring second magnets to be spaced from each other by a second distance. In addition, the first magnet set and the second magnet set are arranged inlaid into each other while allowing the plural first magnets and the plural second magnets to be dispose alternatively. 1. An axial flux Halbach rotor , comprising:a first magnet set, having a plurality of first magnets that are respectively featured by their respective first magnetizing directions and the plural first magnets are arranged interconnecting to each other by the use of a first connecting element while allowing any two neighboring first magnets to be spaced from each other by a first distance; anda second magnet set, having a plurality of second magnets that are respectively featured by their respective second magnetizing directions and are arranged interconnecting to each other by the use of a second connecting element while allowing any two neighboring second magnets to be spaced from each other by a second distance;wherein, the first magnetizing directions are orientated perpendicular to the second magnetizing directions; and the first magnet set and the second magnet set are arranged inlaid into each other while allowing the plural first magnets and the plural second magnets to be dispose alternatively.2. The axial flux Halbach rotor of claim 1 , ...

Transverse flux motor

A transverse flux electric motor ( 10 ) includes an inner stator ( 15 ) and an outer rotor ( 12 ). The rotor ( 12 ) comprises a plurality of permanent magnets ( 70 ) in an alternating arrangement with a plurality of flux concentration strips ( 50 ). The flux concentration strips ( 50 ) contain grooves ( 60 ) on a surface ( 58 ) remote from the stator ( 15 ). The stator ( 15 ) may comprise a plurality of stator units ( 80 ), each comprising a stator yoke ( 82 ) positioned between a pair of stator cores ( 84 ). The stator cores ( 84 ) are substantially gear shaped and comprise a plurality of stator teeth ( 92 ). The stator teeth ( 92 ) of different stator cores ( 84 ) are circumferentially offset from each other. The stator yoke ( 82 ) may comprise a coiled metal strip wrapped around a central shaft ( 72 ) of the motor ( 10 ).

SYSTEM AND APPARATUS FOR SEGMENTED AXIAL FIELD ROTARY ENERGY DEVICE

An axial field rotary energy device can include a rotor comprising an axis of rotation and a magnet. In addition, a stator can be coaxial with the rotor. The stator can include a plurality of stator segments that are coupled together about the axis. Each stator segment can include a printed circuit board (PCB) having a PCB layer comprising a coil. Each stator segment also can include only one electrical phase. The stator itself can include one or more electrical phases. 120-. (canceled)21. An axial field rotary energy device , comprising:a rotor comprising an axis of rotation and a magnet;a stator assembly coaxial with the rotor, the stator assembly comprising a printed circuit board (PCB) panel having a plurality of PCB layers, each PCB layer comprises a coil, each coil comprises only two terminals for electrical connections, one of the two terminals of each coil is coupled to another coil on a different PCB layer with a via to define a coil pair, and the coils are coupled to each other only with vias;wherein each PCB panel consists of a single electrical phase.22. The device of claim 21 , wherein the stator assembly comprises at least two electrical phases.23. The device of claim 21 , wherein the stator assembly comprises a plurality of PCB panels claim 21 , each PCB panel comprises pairs of PCB layers claim 21 , each pair of PCB layers is connected to a selected electrical phase claim 21 , and the pairs of PCB layers connected to different electrical phases are angularly phase shifted by (360 degrees)/n electrical degrees about the axis relative to each other claim 21 , where n=a number of electrical phases of the device.24. The device of claim 21 , wherein the coil pairs are connected in series to define serial groups and the serial groups are connected in parallel.25. The device of claim 21 , wherein the coil pairs are connected in parallel to define parallel groups and the parallel groups are connected in series.26. The device of claim 21 , wherein the stator ...

AXIAL GAP MOTOR

To reduce eddy current loss occurring to a supporting member of a rotor of an axial gap motor, and improve efficiency of a motor. The axial gap motor of the present invention includes a rotor and stators and arranged opposite to this rotor . The rotor has a disk-shaped supporting member on which a plurality of permanent magnet segments is mounted. In the stators and , a plurality of field winding slots is arranged for generating a rotating magnetic field. 1. An axial gap motor having:a disk-shaped supporting member; anda plurality of permanent magnet segments mounted on the supporting member, the plurality of permanent magnet segments spaced in a circumferential direction at an equal pitch angle between a hub section and an outer peripheral section of the disk-shaped supporting member,the axial gap motor comprising:a rotor fixed to an output shaft so as to rotate together with the output shaft; anda stator arranged on at least one side of the rotor and opposite to the rotor with a predetermined gap from the rotor,wherein a plurality of field winding slots for generating a rotating magnetic field is spaced on an outer peripheral section of the stator at an equal pitch angle in a circumferential direction, andwherein the supporting member of the rotor is composed of non-conductive and thermosetting resin.2. The axial gap motor according to wherein the resin is selected from a group containing epoxy resin claim 1 , phenol resin and melamine resin.37-. (canceled)8. The axial gap motor according to claim 1 , wherein the plurality of permanent magnet segments mounted on the supporting member is embedded inside the supporting member.9. The axial gap motor according to claim 1 , wherein the resin is selected from a group containing epoxy resin claim 1 , phenol resin and melamine resin claim 1 , and wherein the plurality of permanent magnet segments mounted on the supporting member is embedded inside the supporting member.10. The axial gap motor according to claim 1 , ...

AXIAL GAP-TYPE POWER GENERATOR

An axial gap-type power generator in an embodiment includes a rotor provided with a magnet and a stator provided with a coil, the rotor and the stator being arranged via a gap in an axial direction of a rotation shaft. Further, a blade is installed at the rotor and the blade generates a cooling wind by rotation of the rotor. Here, the blade is installed at the rotor so that the cooling wind flows through the gap between the rotor and the stator from an inside to an outside in a radial direction of the rotation shaft. 1. An axial gap-type power generator comprising:a rotor provided with a magnet;a stator provided with a coil, the rotor and the stator being arranged via a gap in an axial direction of a rotation shaft;a blade installed at the rotor and configured to generate a cooling wind by rotation of the rotor, the cooling wind flowing through the gap between the rotor and the stator from an inside to an outside in a radial direction of the rotation shaft.2. The axial gap-type power generator according to claim 1 ,wherein the rotor is formed with an opening at a central portion thereof, and the blade is included which is provided on an inner peripheral surface of the rotor.3. The axial gap-type power generator according to claim 1 ,wherein the blade is included which is provided at a portion of the rotor outside in the radial direction of the gap between the rotor and the stator.4. The axial gap-type power generator according to claim 1 ,wherein the blade is included which is installed at the rotor to be sandwiched between the rotor and the stator. This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2013-177761, filed on Aug. 29, 2013; the entire contents of which are incorporated herein by reference.Embodiments described herein relate generally to an axial gap-type power generator.In an axial gap-type power generator, a stator and a rotor are installed via a gap, along an axial direction of a rotation shaft. In ...

ROTOR OF AXIAL FLUX MOTOR

A rotor of an axial flux motor reduces a cogging torque and torque ripple, and is disposed facing a stator. The rotor includes: a rotation shaft; a rotor core having the rotation shaft connected thereto by passing through a center the rotor core; a plurality of seating grooves concavely formed on one surface of the rotor core facing the stator while being spaced apart from each other at equal intervals along a circumferential direction of the rotor core; and a plurality of protrusions formed on inner wall surface of each of the plurality of seating grooves such that the plurality protrusions face a center of each of the plurality of seating grooves; and a plurality of magnets pressed into and coupled to an associated one of the plurality of seating grooves while plastically deforming the plurality of protrusions of the rotor core. 1. A rotor of an axial flux motor , the rotor being disposed facing a stator , the rotor comprising:a rotor core facing the stator;a rotation shaft connected to the rotor core and configured to pass through a center of the rotor core;a plurality of seating grooves concavely formed on a surface of the rotor core while being spaced apart from each other at equal intervals along a circumferential direction of the rotor core;a plurality of protrusions formed on an inner wall surface of each seating groove of the plurality of seating grooves, wherein protrusions of the plurality of protrusions face a center of a seating groove of the plurality of seating grooves that corresponds to a magnet; andthe magnet of a plurality of magnets pressed into and coupled to an associated one of the plurality of seating grooves while plastically deforming the plurality of protrusions of the rotor core.2. The rotor of claim 1 , wherein each seating groove of the plurality of seating grooves is formed in a shape corresponding to a sectional shape of the magnet of the plurality of magnets claim 1 ,wherein the inner wall surface of each seating groove of the ...

SYSTEM AND APPARATUS FOR SEGMENTED AXIAL FIELD ROTARY ENERGY DEVICE

An axial field rotary energy device can include a rotor comprising an axis of rotation and a magnet. In addition, a stator can be coaxial with the rotor. The stator can include a plurality of stator segments that are coupled together about the axis. Each stator segment can include a printed circuit board (PCB) having a PCB layer comprising a coil. Each stator segment also can include only one electrical phase. The stator itself can include one or more electrical phases. 130.-. (canceled)31. A system , comprising:an axial field rotary energy device having an axis, a printed circuit board (PCB) stator and rotors having respective permanent magnets (PM), and the rotors are configured to rotate about the axis relative to the PCB stator;a variable frequency drive (VFD) comprising VFD components coupled to the axial field rotary energy device;an enclosure containing the axial field rotary energy device and the VFD, such that the axial field rotary device and the VFD are integrated together within the enclosure; anda cooling system integrated within the enclosure and configured to cool the axial field rotary energy device and the VFD.32. The system of claim 31 , wherein the enclosure comprises an axial length claim 31 , a radial width relative to the axis that is greater than the axial length claim 31 , and the enclosure is polygonal in shape when viewed axially.33. The system of claim 31 , wherein claim 31 , relative to the axis claim 31 , the VFD components are mounted around and substantially co-planar with the axial field rotary energy device.34. The system of claim 31 , wherein the VFD comprises a communications circuit configured to communicate with an external device.35. The system of claim 34 , wherein the communications circuit is wireless.36. The system of claim 35 , wherein the communication circuits is configured to communicate a status of the system to the external device.37. A system claim 35 , comprising:an axial field rotary energy device having an axis, a ...

Electric Motor

An electric motor (1), at least having: a housing (2) and a stator (3) situated therein with at least a plurality of coils (4); and a rotor (5) with at least one magnet (6), an axis of rotation (7) and an outer circumferential surface (8); wherein: the stator (3) and the rotor (5) are adjacent to one another along the axis of rotation (7); the rotor (5) has a fluid conduction structure (9) between the axis of rotation (7) and the outer circumferential surface (8); the fluid conduction structure (9) has at least one surface (13) extending at least radially (10) and being inclined relative to at least a circumferential direction (11), or to an axial direction (12) running parallel to the axis of rotation (7); and at least part of a fluid flow (14), transported through the fluid conduction structure (9) inside the housing (2) during the operation of the motor (1), can be conducted over the coils (4).

AXIAL FLUX BRUSHLESS PERMANENT MAGNET ELECTRICAL MACHINE ROTOR

An axial flux brushless permanent magnet electrical machine having a stator and at least one rotor. The rotor includes a Halbach array of magnets with at least four magnets per magnetic cycle. The rotor magnets are contained within pockets in the rotor. The pockets are formed with magnet pocket walls being radial walls, active surface walls, and/or inactive surface walls where the walls retain the magnets within the pockets. 1) An axial flux brushless permanent magnet electrical machine comprising:a stator; and a Halbach array of magnets consisting of at least four magnets per magnetic cycle,', 'the magnets are contained within pockets,', partly by an outer predominantly circumferential wall that retains the magnets against centrifugal load and', 'partly by radial walls between adjacent magnets in the Halbach array, and, 'the pockets are formed'}, 'the radial walls join with hub structure of the rotor on an inner end thereof and with the circumferential wall on an outer end thereof, where the axial dimension of the radial walls is chosen larger than the smallest circumferential dimension of one of the magnets., 'at least one rotor, the rotor including'}2) electrical machine of where the radial walls have nearly uniform cross section.3) electrical machine of where the radial walls have a circumferential cross sectional area that varies by a factor of less than a value selected from the group of 1.1 claim 1 , 1.5 claim 1 , 2 claim 1 , 3 claim 1 , 4 claim 1 , and 5.4) A rotor for an axial flux brushless permanent magnet electrical machine claim 1 , the rotor comprising:an annular ring; andan annular Halbach array of magnets with an active surface of the array directed along an axis of the annular ring, the array having at least four magnets per magnetic cycle, each magnet being un-bonded to an adjacent magnet in the annular ring in at least four locations around the ring.5) The rotor of wherein a gap is provided between adjacent magnets claim 4 , and the gap is filled ...

Axial-Type Rotary Electric Machine

An axial-type rotary electric machine that improves a torque and an efficiency relative to a size of a rotor is provided. The axial-type rotary electric machine is provided with a stator having a stator core, and a rotor facing the stator along an axial direction of a rotation axis passing through the stator. The rotor includes a permanent magnet arranged so as to face the stator core in the axial direction of the rotation axis, a yoke arranged so as to face the stator core across the permanent magnet, and a support member supporting the yoke. The support member includes a protrusion protruding so as to face a side surface of the permanent magnet that is on the farther side to the rotation axis. In projection along the axial direction of the rotation axis, a first region where a projecting portion of the permanent magnet does not overlap a projecting portion of the yoke is formed in the permanent magnet, and the first region is formed on the outer-diameter side of the permanent magnet and the first region is formed on a side of the protrusion. 18-. (canceled)9. An axial-type rotary electric machine comprising:a stator having a stator core; anda rotor facing the stator along an axial direction of a rotation axis passing through the stator, a permanent magnet arranged so as to face the stator core in the axial direction of the rotation axis;', 'a yoke arranged so as to face the stator core across the permanent magnet; and', 'a support member supporting the yoke,, 'wherein the rotor includes 'a protrusion protruding so as to face a side surface of the permanent magnet that is on a farther side to the rotation axis,', 'the support member includesin projection along the axial direction of the rotation axis, a first region where a projecting portion of the permanent magnet does not overlap a projecting portion of the yoke is formed in the permanent magnet,the first region is formed on an outer-diameter side of the permanent magnet,the first region is formed on a side of ...

Personal Electromechanical Hand Driven AC to DC Generator to Charge Mobile Devices

An efficient compact form factor for the hand powered mechanically driven flywheel electric generator for charging a smartphone or other personal device, in which the electric generator including a rotor and a stator, in which said rotor includes a plurality of alternating permanent magnetic fields arranged in a circular array such that a series of poles are established about the rotors circumference. 1. An efficient compact form factor for the hand powered mechanically driven flywheel electric generator for charging a smartphone or other personal device , the electric generator including a rotor and a stator , in which said rotor includes a plurality of alternating permanent magnetic fields arranged in a circular array such that a series of poles are established about the rotors circumference.2. The device of where the cross section of said rotor forms a C-shape core claim 1 , flux lines of permanent magnets are concentrated and routed via material of high magnetic permittivity forming a “C” shape core with minimal gap maximizing the field strength across the gap.3. The device of in which said stator is composed of a plurality of conductors arranged in a pattern to convert changing magnetic fluxes due to the relative motion of said permanent magnetic fields to electric potential and current.4. The device of where the said plurality of patterned conductors are constructed on a multi-layer Printed Circuit Board (PCB) This patent application claims priority from provisional U.S. patent application No. 62/764,921, filed Aug. 16, 2018, entitled, “Personal electromechanical hand driven ac to dc generator to charge mobile devices,” and naming Mark Nuytkens as inventor, the disclosure of which is incorporated herein, in its entirety, by reference.Illustrative embodiments of the invention generally relate to generators and, more particularly, to hand powered electric generators. More specifically, illustrative embodiments of the present invention integrate the functionality ...

Brushless motor

A stator core has first, second, and third pole teeth disposed circumferentially and projecting radially outward, the first pole teeth face rotor magnets and have symmetric tooth tips, the second and third pole teeth are circumferentially disposed adjacent to the first pole teeth and have asymmetric tooth tips, and a distance between the tooth tips of the second and third pole teeth is smaller than a distance between the tooth tips of the first and second pole teeth and the distance between the tooth tips of the first and third pole teeth. This apparently reduces the facing ratio between the stator pole teeth and the rotor magnetic poles and increases the cogging torque while preventing increase in cost and reduction in workability.

Modular Vehicle Engine Component Actuator

A modular vehicle engine component actuator comprising a first module including a motor, a printed circuit board, and a motor shaft. A second module includes a gear train and an output shaft. The first module is coupled to the second module in a relationship with the motor shaft extending into the second module and into coupling relationship with the gear train in the second module. The first and second modules define respective first and second openings and interior cavities in communication with each other. The first and second modules are coupled together in a relationship with the printed circuit board positioned between the motor in the first module and the gear train in the second module. The motor shaft extends through a hole in the printed circuit board and into coupling relationship with the gear train in the second module. 1. A modular vehicle engine component actuator comprising:a first module including a motor, a printed circuit board, and a motor shaft housed therein; anda second module including a gear train and an output shaft housed therein, the first module being coupled to the second module in a relationship with the motor shaft in the first module extending into the interior of the second module and into coupling relationship with the gear train in the second module.2. The modular vehicle engine component actuator of wherein the first and second modules define respective first and second openings and interior cavities claim 1 , the first and second modules being coupled in a relationship with the respective first and second openings and interior cavities in communication with each other.3. The modular vehicle engine component actuator of in which the first and second modules are coupled together in a relationship with the printed circuit board positioned between the motor in the first module and the gear train in the second module.4. The modular vehicle engine component actuator of wherein the printed circuit board defines a through-hole claim 1 , ...

Electric motor positioning device, electric motor, and gimbal

An electric motor positioning device for an electric motor includes a photoelectric sensor and a positioning ring. The positioning ring includes a first area and a second area. The electric motor includes a rotor and a stator. The rotor is rotatably mounted on the stator. One of the photoelectric sensor and the positioning ring is fixed on the rotor and rotates with the rotor, and the other one of the photoelectric sensor and the positioning ring is fixed on the stator. A position of the photoelectric sensor relative to the positioning ring rotates within a predetermined range with a relative rotation between the rotor and the stator, and the predetermined range includes a boundary between a first area and a second area.

Cylindrical permanent magnetic coupling device

A cylindrical permanent magnetic coupling device includes a conductor rotor and a permanent magnet rotor. The conductor rotor includes a bottom and a sidewall surrounding the bottom for defining a cavity, in which the cavity includes at least two different inner diameters. The permanent magnet rotor is arranged in the cavity for providing at least two different air gaps between the conductor rotor and the permanent magnet rotor.

DOUBLE AIR GAP, SPOKE TYPE VERNIER MACHINE

A vernier machine includes a rotor, permanent magnets mounted as spokes in pole pairs within the rotor, a first stator, a second stator, a first stator winding wound about the first stator to form a number of poles between a first set of terminals, and a second stator winding wound about the second stator to form the number of poles between a second set of terminals. The first stator and the second stator each include slots and teeth. The first stator and the second stator are mounted on opposite sides of the rotor with each separated by an air gap. The teeth of the first stator are offset from the teeth of the second stator by a half slot pitch relative to the rotor. A number of the pole pairs of the rotor is greater than the number of poles of the first stator winding. 1. A vernier machine comprising:a rotor;a plurality of permanent magnets mounted as spokes in pole pairs within the rotor;a first stator comprising a first plurality of slots and a first plurality of teeth, wherein a slot of the first plurality of slots is positioned between a pair of the first plurality of teeth, and further wherein the first stator is mounted on a first side of the rotor separated by a first air gap between the rotor and a tooth of the first plurality of teeth;a second stator comprising a second plurality of slots and a second plurality of teeth, wherein a slot of the second plurality of slots is positioned between a pair of the second plurality of teeth, and further wherein the second stator is mounted on a second side of the rotor separated by a second air gap between the rotor and a tooth of the second plurality of teeth, wherein the second side is opposite the first side;a first stator winding wound about the first stator to form a number of poles between a first set of terminals; anda second stator winding wound about the second stator to form the number of poles between a second set of terminals;wherein the first plurality of teeth is offset from the second plurality of ...

SERVO PRESS MACHINE, MOTOR USING SERVO PRESS MACHINE, AND METHOD OF ASSEMBLING AND DETACHING MOTOR

Provided is a servo press machine having a configuration that allows miniaturization of the servo press machine, and a motor using the same. A servo press machine includes a servomotor, a crankshaft rotated by driving of the servomotor, a connecting rod connected to an eccentric portion of the crankshaft, and a slide connected to the connecting rod, wherein two connecting rods are connected to the crankshaft, the servomotor is an axial gap motor, a rotor of the axial gap motor is assembled with the crankshaft between the two connecting rods, and a stator of the axial gap motor is fixed to a crown in which the crankshaft is housed. 1. A servo press machine comprising:a servomotor;a crankshaft rotated by driving of the servomotor;a connecting rod connected to an eccentric portion of the crankshaft; anda slide connected to the connecting rod,wherein two connecting rods are connected to the crankshaft,the servomotor is an axial gap motor, anda rotor of the axial gap motor is assembled with the crankshaft between the two connecting rods, and a stator of the axial gap motor is fixed to a crown in which the crankshaft is housed.2. The servo press machine according to claim 1 , wherein the axial gap motor has a configuration in which each of the rotor and the stator is dividable on an axis.3. The servo press machine according to claim 2 , wherein the rotor and the stator have fastening holes for fastening respective divided rotor and stator.4. The servo press machine according to claim 3 , wherein the divided rotor is fastened through the fastening hole using a bolt claim 3 , and is assembled with the crankshaft using a frictional force.5. The servo press machine according to claim 2 , wherein portions of divided places of the rotor and the stator are configured to hook each other claim 2 , and the divided rotor and the divided stator are combined claim 2 , thereby configuring the rotor and the stator.6. The servo press machine according to claim 3 ,wherein the rotor ...

ROTATING ELECTRIC MACHINE

A rotating electric machine according to embodiments is a rotating electric machine including a rotor including a first core and being capable of rotating around a rotating shaft; and a stator disposed to face the rotor in the axial direction of the rotating shaft, the first core including a first pressed powder material having a plurality of first flaky magnetic metal particles and a first intercalated phase, the first flaky magnetic metal particles having an average thickness of from 10 nm to 100 μm, each first flaky magnetic metal particle having a first flat surface and a first magnetic metal phase including at least one first element elected from the group consisting of Fe, Co, and Ni, the average value of the ratio of the average length in the first flat surface with respect to the average thickness being from 5 to 10,000, the first intercalated phase existing between the first flaky magnetic metal particles and including at least one second element selected from the group consisting of oxygen (O), carbon (C), nitrogen (N), and fluorine (F), wherein in the first pressed powder material, the first flat surfaces are oriented approximately in parallel with a first principal plane of the first pressed powder material and have the difference in magnetic permeability on the basis of direction within the first principal plane, and the first principal plane of the first pressed powder material is disposed to be approximately perpendicular to the radial direction of the rotating electric machine. 1. A rotating electric machine comprising a rotor including a first core and being capable of rotating around a rotating shaft; and a stator disposed to face the rotor in the axial direction of the rotating shaft ,the first core including a first pressed powder material having a plurality of first flaky magnetic metal particles and a first intercalated phase,the first flaky magnetic metal particles having an average thickness of from 10 nm to 100 μm, each first flaky magnetic ...

Hybrid Axial Flux Machines and Mechanisms

an axial flux electric motor having one or more permanent magnets () in a rotor that combines the functions of one or more rotor elements of a second machine or mechanism with the rotor of the axial flux electric motor, such as a gear driver of a gear pump (), a vane rotor of a vane pump (), an impeller of a turbine type axial flow pump (), a vane rotor of a vane compressor (), a swash plate of an axial piston machine (), an eccentric (), a cam (), or a roller rotor () or other rotor elements to create smaller, lighter, more efficient machines and mechanisms that can also be modular in construction, sharing various common components across a wide range of these hybrid machines and mechanisms. 1. An axial flux motor comprising a stator-coil assembly on at least one side of at least one rotor , said stator-coil assembly comprising one of a 4 pole stator , or a 6 pole stator , said motor further comprising a 6 pole rotor , said rotor comprising one or more magnets , said magnets comprising one of a pattern of alternating poles N-S-N-S-N-S on each side of said rotor for a stepper style and a synchronous style electromagnetic drive scheme , or a pattern of alternating poles N-N-N-S-S-S on each side of said rotor for a three phase style electromagnetic drive scheme.2. The motor of claim 1 , wherein said motor further comprises components that can be interchanged and or wired differently to create different types of motor claim 1 , said different types of motor comprising stepper style motor claim 1 , three phase motor claim 1 , and synchronous motor claim 1 , said components comprising stators claim 1 , coils claim 1 , stator sockets claim 1 , and rotors.3. A hybrid axial flux motor-machine comprising a stator-coil assembly on at least one side of at least one rotor-driver claim 1 , said rotor-driver comprising one or more magnets claim 1 , said rotor further comprising a mechanical driver element claim 1 , said mechanical driver element comprising one or more of a driver ...

VERTICALLY MOUNTED AND MAGNETICALLY DRIVEN POWER GENERATION APPARATUS WITH ENERGY-SAVING EFFECT

A vertically mounted and magnetically driven power generation apparatus has multiple shelves vertically arranged and spaced apart. Each shelf has a through hole tapering downwards. A spindle is mounted through the multiple through holes. A motor driving the spindle and a primary power generator driven by the spindle and located below the motor are mounted around the spindle. Because of the weight of the primary power generator, adding additional weight is not need. A magnetic driven member is mounted around the spindle and located within a corresponding through hole. Multiple magnetic drive assemblies are mounted in inner walls of the multiple through holes. Each magnetic driven member is subject to forces of magnetic repulsion caused by first and second magnetic drive members of a corresponding magnetic drive assembly for the spindle to be rotated under a friction-free condition to enhance torque and rotation speed of the spindle. 1. A vertically mounted and magnetically driven power generation apparatus with energy-saving effect , comprising: [ multiple shelves vertically arranged and vertically spaced apart from each other, each shelf having a through hole formed through the shelf and tapering downwards;', 'multiple struts securely connected with the multiple shelves; and', 'a center axis vertically and centrally passing through the support frame and the through holes of the multiple shelves;, 'a support frame having, a spindle vertically mounted through the support frame along the center axis; and', an upper driven portion being a truncated cone tapering upwards, wherein a top of the upper driven portion extends beyond a top surface of a corresponding shelf through a top opening of the through hole of the corresponding shelf;', 'a lower driven portion with a top connected with a bottom of the upper driven portion, being a truncated cone tapering downwards, having a shape symmetrical to that of the upper driven portion, having a magnetic pole different from that ...

MULTIPOLE ROTOR WITH LOAF-SHAPED OR PIECE-OF-CAKE-LIKE PERMANENT MAGNETS

A multipole rotor is disclosed for an electric motor, the rotor having a rotor core and a plurality of individual permanent magnets, which are distributed over a circumference of the rotor and which, when seen in a cross-sectional view of the rotor orthogonal to an axis of the rotor, have a convex curvature on the side facing the air gap between a stator of the electric motor and the rotor. Four respective permanent magnets, which are juxtaposed in the circumferential direction of the rotor, define together a magnetic pole pair, the magnetization direction of each individual permanent magnet enclosing an angle between 30° and 60° with a reference plane extending through the axis of the rotor and through the center of the respective permanent magnet. 1. A multipole rotor for an electric motor , the rotor comprising:a rotor core; anda plurality of individual permanent magnets which are distributed over a circumference of the rotor and which, when seen in a cross-sectional view of the rotor orthogonal to an axis of the rotor, have a convex curvature on a side facing an air gap to be located between a stator of the electric motor and the rotor, wherein four respective permanent magnets which are juxtaposed in a circumferential direction of the rotor, define together a magnetic pole pair (N, S), a magnetization direction of each individual permanent magnet enclosing an angle (α) between 30° and 60° with a reference plane extending through the axis of the rotor and through a center of a respective permanent magnet.2. A multipole rotor for an electric motor , the rotor comprising:a plurality of individual permanent magnets, which are distributed over a circumference of the rotor and which, when seen in a cross-sectional view of the rotor orthogonal to an axis of the rotor, have a convex curvature on a side facing an air gap to be located between a stator of the electric motor and the rotor, wherein four respective permanent magnets, which are juxtaposed in a ...

SYSTEM AND APPARATUS FOR AXIAL FIELD ROTARY ENERGY DEVICE

An axial field rotary energy device can include a rotor having an axis of rotation and a magnet; a stator coaxial with the rotor, the stator can have a printed circuit board (PCB) having a plurality of PCB layers that are spaced apart in an axial direction, each PCB layer can include a coil having only two terminals for electrical connections, each coil is continuous and uninterrupted between its only two terminals, each coil consists of a single electrical phase, and one of the two terminals of each coil is electrically coupled to another coil with a via to define a coil pair; and each coil pair is electrically coupled to another coil pair with another via. 1. An axial field rotary energy device , comprising:a rotor comprising an axis of rotation and a magnet;a stator coaxial with the rotor, the stator comprising a printed circuit board (PCB) having a plurality of PCB layers that are spaced apart in an axial direction, each PCB layer comprises a coil having only two terminals for electrical connections, each coil is continuous and uninterrupted between its only two terminals, each coil consists of a single electrical phase, and one of the two terminals of each coil is electrically coupled to another coil with a via to define a coil pair; andeach coil pair is electrically coupled to another coil pair with another via.2. The axial field rotary energy device of claim 1 , wherein each PCB layer comprises a plurality of coils claim 1 , and the coils in each coil pair are co-planar and located on a same PCB layer.3. The axial field rotary energy device of claim 1 , wherein the coils in each coil pair are located on different PCB layers.4. The axial field rotary energy device of claim 1 , wherein at least two of the coils are electrically coupled in series.5. The axial field rotary energy device of claim 1 , wherein at least two of the coils are electrically coupled in parallel.6. The axial field rotary energy device of claim 1 , wherein at least two of the coils are ...

Nonlinear vibration energy harvesting system

A system for harvesting energy from mechanical motion and/or vibrations is disclosed. The system incorporates a nonlinear double pendulum mechanism. The nonlinear mechanism can be mounted on a frame that is fixed to a moving or vibrating object. A transducer can be coupled to the frame and/or the nonlinear mechanism in order to convert the relative motion of the frame and the nonlinear mechanism into electrical energy or stored mechanical energy. The recovered energy can be used to provide primary or supplementary power to certain electronic and mechanical devices.

AXIAL FLUX ELECTRIC MACHINE AND METHODS OF ASSEMBLING THE SAME

A stator assembly for use in an axial flux electric motor includes a plurality of tooth assemblies and a plurality of circumferentially-spaced stator bases that are each coupled to at least one tooth assembly. The stator assembly also includes a plurality of circumferentially-spaced bridge members. Each bridge member is configured to engage a pair of circumferentially adjacent stator bases to apply an axial pre-load force to the pair of stator bases and to create a flux path between the adjacent stator bases. 1. A stator assembly for use in an axial flux electric motor , said stator assembly comprising:a plurality of tooth assemblies;a plurality of circumferentially-spaced stator bases, wherein each stator base is coupled to at least one tooth assembly; anda plurality of circumferentially-spaced bridge members, wherein each bridge member is configured to engage a pair of circumferentially adjacent stator bases.2. The stator assembly in accordance with claim 1 , further comprising a frame and a plurality of fasteners claim 1 , wherein each bridge member includes an opening defined therethrough configured to receive a corresponding fastener of said plurality of fasteners.3. The stator assembly in accordance with claim 2 , wherein said plurality of fasteners extend between said bridge members and said frame to apply an axial pre-load force to said stator bases.4. The stator assembly in accordance with claim 1 , wherein said plurality of tooth assemblies and said plurality of stator bases are each formed from a plurality of vertically oriented laminations claim 1 , and wherein said plurality of bridge members are formed from a plurality of horizontally oriented laminations claim 1 , wherein a flux path is formed between adjacent stator bases through a respective bridge member.5. The stator assembly in accordance with claim 1 , wherein each stator base comprises a pair of end shoulders claim 1 , and wherein each bridge member engages adjacent end shoulders of ...

AXIAL FLUX MOTOR

An axial flux motor is disclosed, with at least one rotor, with at least one stator that has a stator yoke and at least one stator tooth made of a soft magnetic powdered material, which stator tooth has a tooth neck and a tooth head that adjoins the tooth neck and constitutes the pole face of the stator tooth, and with a fastening means that comprises at least one mechanical connecting element, which connecting element fastens the stator tooth to the axial flux motor. In order to embody this in a durable way, it is proposed for the stator tooth to have a fastening opening, which, starting from the pole face of the stator tooth, passes through its tooth head and tooth neck, with the mechanical connecting element being accommodated in the fastening opening in countersunk fashion relative to the pole face. 1. An axial flux motor with , comprising:at least one rotor;at least one stator that has a stator yoke;at least one stator tooth made of a soft magnetic powdered material, which stator tooth has a tooth neck and a tooth head that adjoins the tooth neck and constitutes a pole face of the stator tooth; anda fastening device that comprises at least one mechanical connecting element that fastens the stator tooth to the axial flux motor;wherein the stator tooth has a fastening opening, which, starting from the pole face of the stator tooth, passes through its tooth head and tooth neck, with the mechanical connecting element being accommodated in the fastening opening in countersunk fashion relative to the pole face.2. The axial flux motor according to claim 1 , wherein the axial flux motor has a housing and the connecting element is fastened to the housing.3. The axial flux motor according to claim 1 , wherein the stator yoke has a socket into which the tooth neck of the stator tooth is inserted.4. The axial flux motor according to claim 3 , wherein the stator yoke has an axially extending socket.5. The axial flux motor according to claim 3 , wherein the tooth neck of the ...

Audio Enhancements In Devices Using Motors

A motor may include a coil assembly, a ring, one or more magnets, and a shaft. The coil assembly may include one or more coils arranged in a circular structure. The ring may surround an outer surface of the coil assembly. One or more magnets may be adhered to an inner surface of the ring. The one or more magnets may correspond with a respective coil of the one or more coils. The shaft may extend through a center portion of the circular structure. The shaft may provide a rotational axis for the motor. The shaft may be configured to generate a natural resonance that does not overlap with an operating frequency of the motor.

GUIDED MULTI-BAR LINKAGE ELECTRIC DRIVE SYSTEM

An electric drive system including: a rotary motor system including a hub assembly, a first rotating assembly, a second rotating assembly, and a third rotating assembly, wherein the hub assembly defines a rotational axis about which the first rotating assembly, the second rotating assembly, and the third rotating assembly are coaxially aligned and are capable of independent rotational movement independent of each other; a mechanical guide system supporting the hub assembly and constraining movement of the hub assembly so that the rotational axis of the hub assembly moves along a defined path that is in a transverse direction relative to the rotational axis; and a multi-bar linkage mechanism connecting to each of the first and third rotating assemblies and connecting the hub assembly to the mechanical guide system, wherein the multi-bar linkage mechanism causes the rotational axis of the hub assembly to translate along the defined path in response to relative rotation of the first rotating assembly and third rotating assembly with respect to each other. 1. An electric drive system comprising:a rotary motor system comprising a hub assembly, a first rotating assembly, a second rotating assembly, and a third rotating assembly, wherein the hub assembly defines a rotational axis and wherein each of the first rotating assembly, the second rotating assembly, and the third rotating assembly is coaxially aligned with the rotational axis and is capable of independent rotational movement about the rotational axis independent of each other;a mechanical guide system supporting the hub assembly and constraining movement of the hub assembly so that the rotational axis of the hub assembly moves along a defined path that is in a transverse direction relative to the rotational axis; anda multi-bar linkage mechanism connecting to each of the first and third rotating assemblies and connecting the hub assembly to the mechanical guide system, wherein the multi-bar linkage mechanism causes ...