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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

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Мониторинг СМИ

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

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Применить Всего найдено 13. Отображено 13.
12-05-2023 дата публикации

Mobile energy storage remote operation and maintenance management and control system and method based on VPDN private network

Номер: CN116112520A
Автор: SUN BO, TAO YIBIN, WU FUBAO, YANG BO, SANG BINGYU, LI GUANJUN, ZHU SHAOJIE, LI KECHENG, JI LIANTAO, LI HAOYUAN
Принадлежит:

The invention provides a mobile energy storage remote operation and maintenance management and control system and method based on a VPDN private network. The method comprises the following steps: collecting equipment data through a sensing layer; transmitting the equipment data to a data layer through a network layer; receiving data transmitted by the network layer through a data layer, and performing data acquisition, data processing and data storage; and receiving the processed data through an application layer, analyzing a mobile energy storage index based on the processed data, and remotely controlling the mobile energy storage system based on an analysis result. According to the method for remote operation and maintenance of the mobile energy storage system based on the VPDN private network, the problem that centralized monitoring, remote operation and maintenance and safety management and control of existing mobile energy storage are difficult is solved, wide access and wireless transmission ...

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Номер записи: 1
29-08-2023 дата публикации

Fault ride-through method and system for voltage source type energy storage converter

Номер: CN116667329A
Автор: LI HAOYUAN, TAO YIBIN, LI GUANJUN, SANG BINGYU, CHEN GUOWEI, ZHU SHAOJIE, LI QIANG
Принадлежит:

The invention relates to the technical field of electrical control, particularly provides a voltage source type energy storage converter fault ride-through method and system, and aims to improve the voltage source type energy storage fault ride-through performance by comprehensively optimizing a power instruction, a voltage instruction and a current vector in consideration of different power grid drop depths and device overload capacities. Furthermore, according to the technical scheme provided by the invention, the converter is fully utilized to simulate the external characteristics of the synchronous machine to suppress transient impact current and steady-state fault current, reactive support is provided for the power grid, switching to a current source type control mode is not needed, and the large-interference stability of the voltage source type energy storage system in a high-proportion new energy access scene is improved.

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Номер записи: 2
02-05-2023 дата публикации

Test platform and method suitable for silicon carbide photovoltaic/energy storage high-frequency control platform

Номер: CN116048033A
Автор: LI GUANJUN, WEI LINGFENG, TAO YIBIN, YU HAOJIE, WANG DESHUN, CHEN ERSONG, HE JIEQIONG, JU RONGRONG
Принадлежит:

The invention provides a test platform and method suitable for a silicon carbide photovoltaic/energy storage high-frequency control platform. The test platform comprises an analog quantity input unit and an upper computer which are respectively connected to the silicon carbide photovoltaic/energy storage high-frequency control platform to be tested; if the analog quantity signal received by the upper computer is not consistent with the analog quantity signal input by the analog quantity input unit, the analog quantity test result of the corresponding line is that a problem exists, otherwise, the analog quantity test result of the corresponding line is that no problem exists; the analog quantity function of the silicon carbide photovoltaic/energy storage high-frequency control platform can be rapidly detected through the analog quantity input unit and the upper computer, the fault generation reason can be analyzed according to the test phenomenon, the position of a fault circuit can be positioned ...

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Номер записи: 3
28-04-2023 дата публикации

Direct hanging type energy storage slow start control method and system

Номер: CN116032106A
Автор: HU WEIFENG, XU ZHENG, BAI JINGJING, LI GUANJUN, WU FUBAO, LI HAOYUAN, YANG BO, TAO YIBIN, CHEN GUOWEI, WEI LINGFENG
Принадлежит:

The invention discloses a direct hanging type energy storage slow start control method and system. The system comprises an overvoltage judgment module, an overcurrent judgment module, an overvoltage limiting module, an overcurrent limiting module, a voltage control module, a current control module and a PWM (Pulse Width Modulation) module. The method comprises the following steps: acquiring a voltage signal Vabc of a grid-connected point, and calculating the amplitude Vp of the Vabc; collecting a line current signal Iabc, and calculating the amplitude Ip of the Iabc; setting a virtual impedance value coefficient according to the magnitude of the voltage amplitude; setting a current given slope coefficient according to the magnitude of the current amplitude; and the voltage control module performs closed-loop control on the voltage of the grid-connected point, generates a current given instruction to the current control module, obtains a voltage modulation signal to the PWM modulation module ...

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Номер записи: 4
25-04-2023 дата публикации

Battery monitoring operation and maintenance method, system and equipment of mobile energy storage system and medium

Номер: CN116008834A
Автор: ZHOU CHEN, FENG XINZHEN, TAO YIBIN, WANG DESHUN, SANG BINGYU, LI GUANJUN, XUE JINHUA, YU HAOJIE, ZHUANG JUN, LIU HUAN, LI YUELONG
Принадлежит:

The invention provides a battery monitoring operation and maintenance method, system and device for a mobile energy storage system, and a medium. The method comprises the following steps: acquiring battery operation data of the mobile energy storage system; monitoring and analyzing according to the battery operation data to obtain an alarm work order; sending the alarm work order to operation and maintenance personnel; the monitoring analysis comprises unbalance analysis, short plate positioning and early warning. Unbalance analysis, short plate positioning and early warning are carried out on the battery, remote operation and maintenance of the mobile energy storage system can be achieved, early warning of system battery faults is achieved, the operation and maintenance efficiency of the mobile energy storage system is improved, and the operation and maintenance time is shortened.

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Номер записи: 5
06-06-2023 дата публикации

Man-machine monitoring system and method of static frequency converter

Номер: CN116231839A
Автор: LI HAOYUAN, WEI LINGFENG, LI GUANJUN, YANG BO, TAO YIBIN, WANG DESHUN, JI LIANTAO, GU HAOWEI
Принадлежит:

The invention relates to the technical field of static frequency converters, and particularly provides a man-machine monitoring system and method for a static frequency converter, and the system comprises a display module, a parameter collection module, a system topology module, and a function module. The parameter acquisition module is used for acquiring basic parameter information of the static frequency converter; the system topology module is used for constructing a system topology structure of the static frequency converter; the function module is used for displaying and adjusting the running state of the static frequency converter; and the display module is used for displaying the basic parameter information, the system topology structure and the operation state of the static frequency converter. The technical scheme provided by the invention can solve the measurement and control protection problem of the power electronic device, and can be widely applied to the soft start occasion ...

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Номер записи: 6
07-04-2023 дата публикации

Optimal rotating speed control method and system for pumped storage static frequency converter

Номер: CN115940703A
Автор: LI HAOYUAN, WU FUBAO, LI GUANJUN, YANG BO, TAO YIBIN, CHEN GUOWEI, JI LIANTAO, YU HAOJIE, YIN SHI, SANG BINGYU
Принадлежит:

The invention discloses an optimal rotating speed control method and system for a pumped storage static frequency converter. The method comprises the steps of obtaining target frequency, network bridge current, network bridge voltage and machine bridge voltage; inputting the target frequency, the network bridge current, the network bridge voltage and the machine bridge voltage into a pre-constructed optimal rotating speed control model, and outputting a network bridge thyristor trigger pulse and a machine bridge thyristor trigger pulse; the network bridge thyristor trigger pulse and the machine bridge thyristor trigger pulse act on a network bridge converter and a machine bridge converter respectively to obtain frequency and voltage corresponding to the rotating speed of the motor; wherein the optimal rotating speed control model is constructed by a pulse generation channel constructed by a plurality of modules determined by a network bridge thyristor trigger pulse and a machine bridge ...

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Номер записи: 7
30-05-2023 дата публикации

Direct-hanging type energy storage system grid-connection and grid-disconnection fast and smooth switching method

Номер: CN116191553A
Автор: HU WEIFENG, XU ZHENG, BAI JINGJING, LI GUANJUN, LI HAOYUAN, WEI LINGFENG, TAO YIBIN, CHEN GUOWEI
Принадлежит:

The invention discloses a direct hanging type energy storage system grid-connected and off-grid rapid smooth switching method, which comprises the following steps: when an off-grid operation mode needs to be switched to a grid-connected operation mode, closing a pre-synchronization switch Ssyn, and inputting a pre-synchronization unit; the pre-synchronization unit can generate an angular velocity deviation feedback omega syn, and the angular velocity deviation feedback omega syn and the angular velocity obtained according to a rotor motion equation are added to serve as the angular velocity for control; when the virtual power Psyn is detected to be equal to 0, switching on and grid connection are carried out, meanwhile, the pre-synchronization switch Ssyn is switched off, and the pre-synchronization unit is cut off; a small inertia link is added behind the PI regulator and is used for smoothing impact generated by the regulating variable at the closing moment of the pre-synchronization ...

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Номер записи: 8
11-08-2023 дата публикации

Static frequency converter dual-mode torque control method and system

Номер: CN116582042A
Автор: LI HAOYUAN, WU FUBAO, YANG BO, LI GUANJUN, TAO YIBIN, QIN HAO, SONG ZILAN
Принадлежит:

The invention relates to the technical field of power electronics and power systems, and particularly provides a dual-mode torque control method and system for a static frequency converter, and the method comprises the steps: determining an initial current given signal based on an error signal between a motor operation rotating speed and a rotating speed given signal; obtaining a first current given signal; comparing the initial current given signal with the first current given signal, and determining a rectification trigger angle signal and an inverse transformation phase lead angle signal based on a comparison result; and inputting the rectification trigger angle signal and the network bridge voltage into a pulse generation module to obtain a trigger pulse for controlling a network bridge thyristor, and inputting the inverse transformation phase lead angle signal and the machine bridge voltage into a machine bridge pulse generation module to obtain a trigger pulse for controlling a machine ...

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Номер записи: 9
27-06-2023 дата публикации

Lithium battery equalization control method and system based on self-learning fuzzy logic control

Номер: CN116345625A
Автор: WANG DESHUN, XUE JINHUA, TAO YIBIN, YANG BO, WU FUBAO, ZHUANG JUN, YU HAOJIE, YIN SHI, LI GUANJUN, SANG BINGYU, CAO YUANZHI, WANG KAIYI
Принадлежит:

The invention provides a lithium battery equalization control method and system based on self-learning fuzzy logic control, and the method comprises the steps: obtaining parameters of a single battery in a lithium battery pack and an equalization current value of an equalization circuit at a previous moment, and taking the equalization current value at the previous moment as a first equalization current value; based on parameters of single batteries in the lithium battery pack and the first equalization current value, a driving signal is obtained by combining a self-learning fuzzy control algorithm; controlling SOC equalization of the lithium battery based on the driving signal; wherein the lithium battery pack at least comprises two single batteries. According to the invention, an active equalization mode based on a self-learning fuzzy control algorithm and taking the battery SOC as an equalization variable is adopted, so that the problems that an existing battery equalization method is ...

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Номер записи: 10
04-04-2023 дата публикации

Function multiplexing type energy storage converter off-grid control system and method

Номер: CN115912361A
Автор: LI GUANJUN, WANG XIANGYU, LI HAOYUAN, YANG BO, YU HAOJIE, TAO YIBIN, SANG BINGYU
Принадлежит:

The invention provides an off-grid control system and method for a function multiplexing type energy storage converter. The off-grid control system comprises a voltage acquisition module, a current acquisition module, a double-loop control module, a positive and negative sequence separation module, an unbalance compensation calculation module, a harmonic compensation calculation module and a switching pulse generation module. According to the control system and method provided by the invention, multi-objective optimization of the output voltage of the function multiplexing type energy storage converter can be realized; a negative sequence voltage modulation signal is obtained based on the unbalanced component of the voltage introduced by the unbalanced compensation calculation module, so that the energy storage converter has the capacity of negative sequence compensation, and the unbalance degree of the output voltage is reduced; the harmonic voltage modulation signal obtained by introducing ...

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Номер записи: 11
04-08-2023 дата публикации

Model prediction control method and system for fixed switching frequency of energy storage converter

Номер: CN116545286A
Автор: LI GUANJUN, WANG XIANGYU, LI HAOYUAN, YANG BO, WU FUBAO, TAO YIBIN, SANG BINGYU, CHEN GUOWEI
Принадлежит:

The model prediction control method for the fixed switching frequency of the energy storage converter comprises the following steps: based on output current values corresponding to each switching sequence of the energy storage converter at the current moment, performing prediction by using a pre-constructed current prediction model to obtain output current values corresponding to each switching sequence at the next moment; based on the output current value corresponding to each switching sequence at the next moment, calculating by using a pre-constructed first value function to obtain a value function value of each switching sequence at the next moment; on the basis of the value function value of each switching sequence at the next moment, a pre-constructed composite value function is used for calculation, and an optimal switching sequence set is determined; selecting a switching sequence from the optimal switching sequence set as a control variable of the energy storage converter at the ...

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Номер записи: 12
21-07-2023 дата публикации

Continuous nonsingular terminal sliding mode control method of Buck converter

Номер: CN116470755A
Автор: LI GUANJUN, TANG QINHAO, WANG XIANGYU
Принадлежит:

The invention discloses a continuous nonsingular terminal sliding mode control method of a Buck converter, which is mainly used for solving the problems of finite time stability of output voltage of the Buck converter and mismatching interference suppression. According to the method, a state space averaging model is established for a Buck converter working in an inductive current continuous mode, a controller based on a superhelix algorithm is designed to enable a sliding mode variable to converge to zero in finite time, and a system state is enabled to converge to a balance point along a nonsingular terminal sliding mode surface in the finite time; finite time tracking of the output voltage of the Buck converter on the reference voltage is realized; on the basis, mismatching interference of the Buck converter is estimated through a nonlinear interference observer and compensated, and effective suppression of the mismatching interference is achieved. The method is simple in form and high ...

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Номер записи: 13