Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 8. Отображено 8.
17-01-2006 дата публикации

Integrated DC link choke and method for suppressing common-mode voltage in a motor drive

Номер: US0006987372B1
Автор: Bin Wu, Steven C. Rizzo, Navid R. Zagari, Yuan Xiao, WU BIN, RIZZO STEVEN C, ZARGARI NAVID R, XIAO YUAN, RIZZO STEVEN C., ZAGARI NAVID R.
Принадлежит: Rockwell Automation Technologies, Inc., ROCKWELL AUTOMATION TECH INC, ROCKWELL AUTOMATION TECHNOLOGIES, INC.

A motor drive and a choke therefor are disclosed, wherein the choke comprises a magnetic core with an inner leg and two outer legs, and four coils, which may be connected in DC current paths in the motor drive. First and second differential coils are wound around first and second outer legs, respectively; and first and second common-mode coils are wound around the inner leg of the choke. The first and second differential coils smooth the DC current on a DC bus in the motor drive, and the first and second common-mode coils suppress common-mode voltages in the motor drive. Also disclosed is a method for suppressing common-mode voltages in a motor drive.

Подробнее
Номер записи: 1
07-11-2006 дата публикации

Integrated DC link choke and method for suppressing common-mode voltage in a motor drive

Номер: US0007132812B1
Автор: Bin Wu, Steven C. Rizzo, Navid R. Zagari, Yuan Xiao, WU BIN, RIZZO STEVEN C, ZAGARI NAVID R, XIAO YUAN, RIZZO STEVEN C., ZAGARI NAVID R.
Принадлежит: Rockwell Automation Technologies, Inc., ROCKWELL AUTOMATION TECH INC, ROCKWELL AUTOMATION TECHNOLOGIES, INC.

A motor drive and a choke therefor are disclosed, wherein the choke comprises a magnetic core with an inner leg and two outer legs, and four coils, which may be connected in DC current paths in the motor drive. First and second differential coils are wound around first and second outer legs, respectively; and first and second common-mode coils are wound around the inner leg of the choke. The first and second differential coils smooth the DC current on a DC bus in the motor drive, and the first and second common-mode coils suppress common-mode voltages in the motor drive. Also disclosed is a method for suppressing common-mode voltages in a motor drive.

Подробнее
Номер записи: 2
09-09-2003 дата публикации

Integrated DC link choke and method for suppressing common-mode voltage in a motor drive

Номер: US0006617814B1
Автор: Bin Wu, Steven C. Rizzo, Navid R. Zagari, Yuan Xiao, WU BIN, RIZZO STEVEN C, ZAGARI NAVID R, XIAO YUAN, RIZZO STEVEN C., ZAGARI NAVID R.
Принадлежит: Rockwell Automation Technologies, Inc., ROCKWELL AUTOMATION TECH INC, ROCKWELL AUTOMATION TECHNOLOGIES, INC.

A motor drive and a choke therefor are disclosed, wherein the choke comprises a magnetic core with an inner leg and two outer legs, and four coils, which may be connected in DC current paths in the motor drive. First and second differential coils are wound around first and second outer legs, respectively; and first and second common-mode coils are wound around the inner leg of the choke. The first and second differential coils smooth the DC current on a DC bus in the motor drive, and the first and second common-mode coils suppress common-mode voltages in the motor drive. Also disclosed is a method for suppressing common-mode voltages in a motor drive.

Подробнее
Номер записи: 3
31-07-2001 дата публикации

CSI based drive having feedforward control of inverter input voltage

Номер: US0006269010B1
Автор: Daming Ma, Bin Wu, Navid R. Zargari, Steven C. Rizzo, MA DAMING, WU BIN, ZARGARI NAVID R, RIZZO STEVEN C, ZARGARI NAVID R., RIZZO STEVEN C.
Принадлежит: Rockwell Technologies, LLC, ROCKWELL TECH LLC, ROCKWELL TECHNOLOGIES, LLC

The drive for an a.c. induction motor features a rectifier for converting alternating current into direct current and a current source inverter for converting direct current into alternating current supplied to a motor. A d.c. link choke interconnects the rectifier and the inverter. The inverter includes a first control loop which provides a desired or command d.c. link choke current to a second control loop responsible for the rectifier. For the purposes of the second control loop the actual d.c. link choke current and an input voltage of the inverter are detected. The difference or error between the desired and actual d.c. choke currents are minimized by a compensator. The output of the compensator is added to the detected inverter input voltage, and the sum is fed to a switching pattern generator which controls the switches in the rectifier. In this manner the feedback of the inverter input voltage is decoupled from the compensator responsible for the d.c. link choke current. This makes ...

Подробнее
Номер записи: 4
02-04-2002 дата публикации

PWM rectifier having de-coupled power factor and output current control loops

Номер: US0006366483B1
Автор: Daming Ma, Bin Wu, Navid R. Zargari, Steven C. Rizzo, MA DAMING, WU BIN, ZARGARI NAVID R, RIZZO STEVEN C, ZARGARI NAVID R., RIZZO STEVEN C.
Принадлежит: Rockwell Automation Technologies, Inc., ROCKWELL AUTOMATION TECH INC, ROCKWELL AUTOMATION TECHNOLOGIES, INC.

A PWM rectifier wherein the switching bridge has m input filter capacitors, each connected at a terminal thereof, to the line side of the bridge. These terminals are used to connect an m-phase a.c. power supply (m>=1) having a per phase system inductance to the bridge. A current smoothing inductor is connected to the load side of the bridge and enables a load to be connected thereto. A switching pattern generator controls the switches in the switching bridge based on a reference output current. A first control loop is provided for determining an active portion of the reference output current based on a desired power level of the load and an m-phase voltage at the capacitor terminals. A second control loop is provided for determining a reactive portion of the reference output current based on the m-phase voltage at the capacitor terminals. The reactive portion of the current is selected so as to obtain a desired per phase power factor, such as unity, on the power supply. In this manner the ...

Подробнее
Номер записи: 5
15-03-2005 дата публикации

Integrated DC link choke and method for suppressing common-mode voltage in a motor drive

Номер: US0006867564B1
Автор: Bin Wu, Steven C. Rizzo, Navid R. Zagari, Yuan Xiao, WU BIN, RIZZO STEVEN C, ZAGARI NAVID R, XIAO YUAN, RIZZO STEVEN C., ZAGARI NAVID R.
Принадлежит: Rockwell Automation Technologies, Inc., ROCKWELL AUTOMATION TECH INC, ROCKWELL AUTOMATION TECHNOLOGIES, INC.

A motor drive and a choke therefor are disclosed, wherein the choke comprises a magnetic core with an inner leg and two outer legs, and four coils, which may be connected in DC current paths in the motor drive. First and second differential coils are wound around first and second outer legs, respectively; and first and second common-mode coils are wound around the inner leg of the choke. The first and second differential coils smooth the DC current on a DC bus in the motor drive, and the first and second common-mode coils suppress common-mode voltages in the motor drive. Also disclosed is a method for suppressing common-mode voltages in a motor drive.

Подробнее
Номер записи: 6
13-09-2007 дата публикации

POWER CONVERTER WITH REDUCED COMMON MODE VOLTAGE

Номер: US2007211501A1
Автор: ZARGARI NAVID R, RIZZO STEVEN C, XIAO YUAN, WU BIN, ZARGARI NAVID R., RIZZO STEVEN C.
Принадлежит:

An improved power converter that produces reduced-levels of common-mode voltages, or even entirely eliminates such voltages, is disclosed herein, along with a method of reducing common-mode voltages. In at least some embodiments, the improved power converter is equipped with common-mode filter inductors and a link coupling input and output ports of the power converter with one another to communicate a ground point associated with the input ports of the converter (and the source) to the load. Further, in at least some embodiments, the method includes providing common mode filter inductors as part of the converter, where the inductors are connected at least indirectly to at least one of a rectifier and an inverter of the converter, and communicating a grounded neutral from input ports of the converter to output ports of the converter by way of at least one additional linkage.

Подробнее
Номер записи: 7
24-02-2009 дата публикации

DC voltage balance control for three-level NPC power converters with even-order harmonic elimination scheme

Номер: US0007495938B2
Автор: Bin Wu, Steven C. Rizzo, Navid R. Zargari, Congwei Liu, Weixing Feng, WU BIN, RIZZO STEVEN C, ZARGARI NAVID R, LIU CONGWEI, FENG WEIXING, RIZZO STEVEN C., ZARGARI NAVID R.
Принадлежит: Rockwell Automation Technologies, Inc., ROCKWELL AUTOMATION TECH INC, ROCKWELL AUTOMATION TECHNOLOGIES, INC.

Three-level inverter and rectifier power conversion systems and space vector modulation (SVM) controls having even-order harmonic elimination for neutral voltage balancing with a predefined vector switching sequences for half-wave symmetry in open loop system operation. The vector sequence listings for each SVM diagram segment includes switching state entries individually indicating one of three possible switching state levels positive (P), zero (0), or negative (N) for each of three or more switching groups of the power conversion system, with listings for each pair of first and second diametrically opposite diagram segments include symmetrically opposite switching states, with positive levels in the entries of the listing for the first segment corresponding to negative levels in the entries of the listing for the second segment and vice versa.

Подробнее
Номер записи: 8