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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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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 13. Отображено 13.
07-07-2023 дата публикации

Dynamic detection method, device and detection circuit for direct current bus capacitor state

Номер: CN116400144A
Автор: LEI ERTAO, JIN LI, ZHANG JUNKUN, MA KAI, TAN LINGQI, MA YANJUN
Принадлежит:

The invention discloses a method, a device and a detection circuit for dynamically detecting the state of a direct current bus capacitor, and the method comprises the steps: constructing an equivalent circuit model related to the direct current bus capacitor, collecting the filtered capacitor parameters from the two ends of the direct current bus capacitor of the equivalent circuit model, and calculating the state of the direct current bus capacitor; the capacitance parameters comprise capacitance current and capacitance voltage; and performing equivalent calculation by adopting the capacitance parameter to obtain an equivalent capacitance value, and determining a capacitance state according to the equivalent capacitance value. According to the method, the equivalent model of the direct current bus capacitor can be established, the voltage and the current at the two ends of the direct current bus capacitor in the equivalent model are collected, the capacitance value of the capacitor is ...

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Номер записи: 1
04-07-2023 дата публикации

Multi-mode fusion battery state-of-charge estimation method and multi-mode fusion battery state-of-charge estimation system

Номер: CN116381508A
Автор: LI YING, ZHAO WEI, MA KAI, LEI ERTAO, TAN LINGQI, JIN LI, ZHANG JUNKUN
Принадлежит:

The invention provides a multi-mode fusion battery state-of-charge estimation method and system, and the method comprises the steps: obtaining the basic information of a to-be-estimated battery, and constructing an initial equivalent circuit model; acquiring a battery response curve and calibrating the state of charge of the battery; collecting current and voltage values of the battery in real time, and estimating the state of charge of the battery by adopting a plurality of battery state of charge estimation methods according to the initial equivalent circuit model, the battery response curve and the state of charge of the battery to obtain a plurality of groups of battery state of charge estimation values; and based on the plurality of groups of battery state-of-charge estimation values, constructing a plurality of groups of battery state-of-charge judgment vectors and performing fusion to obtain a final battery state-of-charge judgment vector so as to obtain a final battery state-of-charge ...

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Номер записи: 2
01-08-2023 дата публикации

Configuration method and device of low-voltage device, equipment and storage medium

Номер: CN116526502A
Автор: JIN LI, MA MING, LEI ERTAO, ZHANG JUNKUN
Принадлежит:

The invention discloses a configuration method and device of a low-voltage device, equipment and a storage medium, and the method comprises the steps: obtaining and drawing a topological single line diagram of a power distribution network according to a target line network frame topological graph, a line impedance parameter and a load parameter; generating an admittance matrix of the distribution line according to the topological single line diagram, and performing load flow calculation on the admittance matrix to obtain load flow voltage of each node in the distribution line; when the tide voltage of the node in the distribution line is smaller than the preset minimum voltage, calculating the power factor of each node of the current distribution line, and judging whether the node of which the power factor is smaller than the preset minimum power factor exists or not; if yes, determining a first node from the distribution line according to the preset minimum power factor, and taking the ...

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Номер записи: 3
14-04-2023 дата публикации

Method and system for detecting running state of energy storage battery

Номер: CN115963418A
Автор: ZHAO WEI, LI YING, YANG DELIN, MA KAI, LEI ERTAO, TAN LINGQI, JIN LI, MA YANJUN, FAN XINMING, LI XIN, LI XINWEI, WANG XIAOMAO, ZHANG JUNKUN, JIANG LIANTAO
Принадлежит:

The invention discloses a method and system for detecting the running state of an energy storage battery, and the method comprises the steps: obtaining the real-time data of each battery in a battery energy storage system and the series-parallel connection relation of the batteries, and calculating an abnormal probability vector under each series structure according to the series structure and the real-time data of each battery; performing evidence fusion on the voltage anomaly probability vector and the temperature anomaly probability vector under the same series structure to obtain a series anomaly probability matrix; calculating a current anomaly probability vector of each battery string of the parallel structure according to the real-time current data of each battery string of the parallel structure; weighting the current anomaly probability vector of each battery string of the parallel structure to the series anomaly probability matrix to obtain an abnormal state evaluation matrix; ...

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Номер записи: 4
25-04-2023 дата публикации

SOC and SOH joint estimation method and device of lithium ion battery

Номер: CN116008818A
Автор: LI YING, ZHAO WEI, TAN LINGQI, MA YANJUN, JIN LI, LI JIANLIN, LIU SHUO, WANG XIAOMAO, LI XINWEI, ZHANG JUNKUN, JIANG LIANTAO, MA KAI, LEI ERTAO, LI XIN
Принадлежит:

The invention discloses a lithium ion battery SOC and SOH joint estimation method and device, and the method comprises the steps: determining a prior SOC estimation value of a lithium battery at a current moment based on the current data of the lithium battery at the current moment, and an SOC value and an SOH value of the lithium battery at a previous moment; determining the output voltage of the lithium battery equivalent circuit model based on the priori SOC estimation value in combination with the function relationship between the model parameters of the lithium battery equivalent circuit model and the SOC value and the SOH value; determining the SOH optimal estimated value of the lithium battery at the current moment by using an optimization model between the output voltage and the measured voltage of the lithium battery; and calculating a posterior SOC estimated value of the lithium battery at the current moment by using the lithium battery equivalent circuit model according to the ...

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Номер записи: 5
30-05-2023 дата публикации

Method and system for measuring and calculating maximum power point of photovoltaic power generation system

Номер: CN116191530A
Автор: HUANG ZHENLIN, AN RANRAN, LEI ERTAO, WANG QIAN, YUE JINGPENG, YANG YUE, LIANG XIAOBING
Принадлежит:

The invention discloses a method and a system for measuring and calculating the maximum power point of a photovoltaic power generation system. The method comprises the following steps: acquiring the initial voltage of the maximum power point of a photovoltaic panel within a preset voltage range; on the basis of a preset maximum power point port current equation, the port current of the current maximum power point is iteratively calculated through the previous port voltage, and on the basis of a preset maximum power point port voltage equation, the port voltage of the current maximum power point is iteratively calculated through the current port current. The voltage difference between the previous port voltage and the current port voltage is smaller than a preset maximum error; and when the voltage difference is smaller than a preset maximum error, outputting the current port current and the current port voltage as the target port current and the target port voltage of the measured and calculated ...

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Номер записи: 6
04-08-2023 дата публикации

Method and system for evaluating junction temperature and power loss of IGBT (Insulated Gate Bipolar Translator) module

Номер: CN116540056A
Автор: LEI ERTAO, ZHANG JUNKUN, JIN LI, MA KAI
Принадлежит:

The invention discloses an IGBT module junction temperature and power loss assessment method and system, and the method comprises the steps: selecting a plurality of terminals of an IGBT module according to a preset selection rule; wherein the number of the terminals is obtained according to the number of power chips in the IGBT module; carrying out a characteristic experiment on the IGBT module, and establishing a thermal model according to a thermal coefficient from a specific chip to each terminal; performing junction temperature transfer calculation on the thermal model to obtain a transfer coefficient inverse matrix; and placing the IGBT module in a field operation condition, measuring the current temperature of each terminal of the IGBT module, and carrying out online estimation on each current temperature and the transfer coefficient inverse matrix to obtain the junction temperature and the power loss of the IGBT module. According to the embodiment of the invention, the junction ...

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Номер записи: 7
10-12-2014 дата публикации

Cascaded static compensator integrated with power distribution transformer

Номер: CN104201690A
Автор: YIN XIANGGEN, ZHANG ZHE, WEN MINGHAO, WANG CUNPING, LEI ERTAO, LIU XIAOYU
Принадлежит:

The invention discloses a cascaded static compensator integrated with a power distribution transformer. The cascaded static compensator comprises the power distribution transformer, a cascaded static compensation module, an output filter and a control platform; a connecting tap is arranged in the center of each winding of the high voltage side of the power distribution transformer to serve as a compensating current injection point and each connecting tap is connected with the AC output end of the cascaded static compensation module by use of the output filter; the control input end of the cascaded static compensation module is connected with the control platform; the control platform is used for acquiring the voltage and current information of the high and low voltage side and the connecting tabs of the power distribution transformer, generating a tracking instruction current signal according to the information and controlling the output of the cascaded static compensation module by use ...

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Номер записи: 8
05-05-2023 дата публикации

Three-level dual-active bridge converter inductive current effective value control method and system

Номер: CN116073666A
Автор: LEI ERTAO, JIN LI, ZHANG JUNKUN, MA KAI
Принадлежит:

The invention provides a three-level dual-active bridge converter inductive current effective value control method and system, and the method comprises the steps: obtaining the transmission power and inductive current of a three-level dual-active bridge converter in a full-half bridge mode based on the division of the full-half bridge mode of the three-level dual-active bridge converter; solving an inductive current effective value according to the inductive current, and performing numerical optimization on the effective value based on the transmission power to obtain an optimization control table; empirical value bias is carried out on the effective value optimized in the half-bridge mode, a bias result is compared with the effective value optimized in the full-bridge mode, and an ideal mode switching boundary is determined; acquiring an actual mode switching boundary according to the ideal mode switching boundary; and performing coordination control on the converter based on the actual ...

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Номер записи: 9
09-05-2023 дата публикации

Configuration type multifunctional dynamic model simulation experiment method and system

Номер: CN116088343A
Автор: HUANG ZHENLIN, LIANG XIAOBING, AN RANRAN, WEI YAN, ZHANG YUAN, TAO RAN, YUE JINGPENG, LEI ERTAO, WANG YIH
Принадлежит:

According to the configuration type multifunctional dynamic model simulation experiment method and system disclosed by the invention, the source storage dynamic model test system and the dynamic model simulation platform secondary monitoring system are constructed, and when a dynamic model simulation experiment function instruction is received, the source storage dynamic model test system is remotely controlled through the remote control module; selecting a related module from the source storage dynamic simulation test system to perform dynamic simulation simulation scene configuration, and configuring a dynamic simulation simulation function for the related module so as to obtain and perform simulation simulation on a dynamic simulation simulation experiment function scene; and the control operation monitoring module monitors the analog simulation process in real time, obtains the dynamic simulation real-time data through the information acquisition module, analyzes the dynamic simulation ...

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Номер записи: 10
11-04-2023 дата публикации

Distributed photovoltaic output prediction method and device

Номер: CN115954873A
Автор: HUANG ZHENLIN, LIANG XIAOBING, WEI YAN, LEI ERTAO, WANG QIAN, TAO RAN, LU JUN, AN RANRAN
Принадлежит:

The invention discloses a distributed photovoltaic output prediction method and device, and the method comprises the steps: building a centralized photovoltaic output characteristic model according to the historical illumination intensity and historical power measurement value of a centralized photovoltaic; according to the historical measurement data of the distributed photovoltaic and the output characteristic model of the centralized photovoltaic, establishing an output characteristic model of the distributed photovoltaic; and according to the feeder line connection information of the distributed photovoltaic, in combination with the output characteristic model of the centralized photovoltaic and the output characteristic model of the distributed photovoltaic, calculating to obtain a photovoltaic output predicted value of the feeder line in the distributed photovoltaic. According to the embodiment of the invention, the prediction precision of distributed photovoltaic output can be effectively ...

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Номер записи: 11
02-05-2023 дата публикации

LED driving power supply structure optimization method and system based on current harmonics

Номер: CN116050166A
Автор: JIN LI, MA MING, LEI ERTAO, ZHANG JUNKUN
Принадлежит:

The invention discloses an LED driving power supply structure optimization method and system based on current harmonics, and the method comprises the steps: obtaining a magnetic flux sequence and a current sequence of a primary side inductor of a transformer according to the voltage of an LED port and the working parameters of a flyback converter; the LED driving power supply structure comprises an uncontrolled rectification circuit, an LC filter circuit and a flyback converter composed of a transformer. Traversing each moment in the magnetic flux time expression of the primary side inductor of the transformer, and querying to obtain a current value of each traversing moment based on the magnetic flux sequence and the current sequence so as to form a time sequence of the current expression; and in combination with the time sequence of the current expression, calculating to obtain current harmonics of the LED port, and optimizing the structure of the LED driving power supply according to ...

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Номер записи: 12
06-06-2023 дата публикации

Energy storage unit power distribution method and system

Номер: CN116231706A
Автор: LI YING, ZHAO WEI, YANG DELIN, JIN LI, MA YANJUN, TAN LINGQI, WANG XIAOMAO, ZHANG JUNKUN, LI XINWEI, JIANG LIANTAO, MA KAI, LEI ERTAO, FAN XINMING
Принадлежит:

The invention discloses an energy storage unit power distribution method and system. The method comprises the steps that battery characteristics corresponding to all energy storage units of an energy storage power station are sequentially obtained; calculating the charging capacity and the discharging capacity of each energy storage unit according to the battery characteristics; judging the state of each energy storage unit according to the total power, if the state of each energy storage unit is a charging state, calculating the charging capability of each energy storage unit, and establishing a charging power loss optimization model; iteratively solving the charging power loss optimization model until the charging power distribution factor of each energy storage unit meets the respective corresponding charging power constraint condition and the total charging power distribution weight constraint condition, stopping iteration, and outputting a first charging power distribution factor of ...

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Номер записи: 13