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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 8. Отображено 8.
13-08-2021 дата публикации

Arc voltage enhanced natural commutation type direct current circuit breaker and control method thereof

Номер: CN113257596A
Автор: GAN ZHIZHENG, YU ZHANQING, QU LU, ZENG RONG, YAN XIN, HUANG YULONG, 甘之正, 余占清, 屈鲁, 曾嵘, 严鑫, 黄瑜珑
Принадлежит:

The invention discloses an arc voltage enhanced natural commutation type direct current circuit breaker and a control method thereof; the direct current circuit breaker comprises a main through-flow branch, a transfer branch and an energy absorption branch which are connected in parallel, and the main through-flow branch comprises a magnetic blow gas rapid mechanical switch. According to the invention, rapid and reliable natural commutation of the direct current circuit breaker is realized.

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Номер записи: 1
11-08-2023 дата публикации

Power electronic equipment cooling system and method and condenser

Номер: CN116583067A
Автор: ZENG RONG, FENG JIAN, CUROU, YU ZHANQING, YAN XIN, GAN ZHIZHENG, ZHANG GONGYI, ZHAO BIAO, WU JINPENG, SONG QIANG, ZHANG LONG
Принадлежит:

The invention discloses a power electronic equipment cooling system and method and a condenser. Comprising an evaporator, a fully-sealed box body, a steam pipe, a condenser and a return pipe, the semiconductor device, the evaporator and other accessory devices are immersed by a liquid cooling medium injected into the fully-sealed box body, and the two sides of the fully-sealed box body are communicated with a steam pipe and a return pipe respectively; the evaporator and the semiconductor device are connected into a whole in a pressing mode and arranged in the fully-sealed box body, a liquid cooling medium around the evaporator is vaporized and enters the condenser arranged above the fully-sealed box body, the condenser is communicated with the steam pipe and the backflow pipe, and the steam cooling medium is liquefied and flows back into the fully-sealed box body. Dynamic self-circulation of a cooling medium is achieved, safety and reliability are higher, operation and maintenance are more ...

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Номер записи: 2
07-07-2023 дата публикации

Turn-off direct current converter and multi-stage protection method and system thereof

Номер: CN116404621A
Автор: ZENG RONG, YU ZHANQING, XU CHAOQUN, CUROU, ZHAO BIAO, WANG ZONGZE, WU JINPENG, GAN ZHIZHENG, ZHANG LONG
Принадлежит:

The invention discloses a turn-off direct current converter and a multi-stage protection method and system thereof. Comprising the following steps: setting an overvoltage breakdown diode for a power device in the turn-off direct current converter; when the cathode and anode voltage of the power device exceeds a protection threshold value of the overvoltage breakdown diode, the overvoltage breakdown diode is actively broken down, so that the power device is triggered to be turned on; the turn-off device module is connected with a metal oxide arrester in parallel; the metal oxide lightning arrester carries out overvoltage clamping protection on the turn-off device module; a valve lightning arrester is connected in parallel with a bridge arm; the valve lightning arrester carries out overvoltage protection on the bridge arm. And overvoltage protection under various extreme working conditions can be dealt with, safe operation of power devices can be guaranteed, and a multi-stage protection system ...

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Номер записи: 3
25-07-2023 дата публикации

MOV suitable for turn-off converter

Номер: CN116488122A
Автор: YU ZHANQING, ZENG RONG, CUROU, GAN ZHIZHENG, ZHAO BIAO, WANG ZONGZE, XU CHAOQUN, ZHANG SONG
Принадлежит:

The invention provides a metal oxide varistor (MOV) suitable for a turn-off converter, the MOV comprises a metal oxide varistor (MOV) body and a protection device which are connected in series, the MOV body is used for realizing overvoltage protection and turn-off energy absorption of a turn-off device in the turn-off converter; and the protection device is used for realizing over-energy protection on the MOV body. According to the invention, reasonable parameter design is carried out on the MOV body and the protection device connected in series, so that overvoltage protection on the turn-off device and over-energy protection on the MOV body can be realized at the same time.

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Номер записи: 4
13-08-2021 дата публикации

Hybrid direct-current circuit breaker based on composite commutation mode and control method thereof

Номер: CN113257597A
Автор: ZENG RONG, YU ZHANQING, QU LU, GAN ZHIZHENG, YAN XIN, HUANG YULONG, 曾嵘, 余占清, 屈鲁, 甘之正, 严鑫, 黄瑜珑
Принадлежит:

The invention provides a hybrid direct-current circuit breaker based on a composite commutation mode and a control method thereof. The direct-current circuit breaker comprises a main through-flow branch, a transfer branch II and an energy consumption branch which are connected in parallel, and the main through-flow branch comprises a rapid mechanical switch A and a rapid mechanical switch B which are connected in series; and the rapid mechanical switch B is connected in parallel with a transfer branch I, wherein the transfer branch I comprises a first bidirectional solid-state switch module and a first energy absorption module which are connected in parallel. The direct-current circuit device has the advantages that the conduction loss is close to zero, the commutation assembly is simple in structure, commutation is rapid and reliable and the like, and non-arc on-off of part of switches can be achieved.

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Номер записи: 5
02-05-2023 дата публикации

Quick mechanical switch operating mechanism with adjustable opening speed and control method thereof

Номер: CN116053094A
Автор: YU ZHANQING, CUROU, GAN ZHIZHENG, ZENG RONG, HUANG YULONG, YAN XIN, ZHANG GONGYI, FENG JIAN
Принадлежит:

The invention belongs to the technical field of direct-current circuit breakers, and discloses a quick mechanical switch operating mechanism with adjustable opening speed and a control method thereof, and the operating mechanism comprises a first primary side circuit, an insulating pull rod, a metal disc and a coil support. The first primary side circuit comprises an opening coil, the coil support comprises a first fixing plate and a second fixing plate which are arranged at a set interval, the opening coil is arranged on the first fixing plate, the insulating pull rod is in sliding connection with the first fixing plate, and the two ends of the insulating pull rod are connected with a moving contact of the arc extinguish chamber and the metal disc respectively. The metal disc is arranged between the first fixing plate and the second fixing plate; the first primary side circuit is used for adjusting an electromagnetic repulsive force value between the opening coil and the metal disc. The ...

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Номер записи: 6
02-05-2023 дата публикации

High-voltage direct current converter and control method

Номер: CN116054605A
Автор: XU CHAOQUN, YU ZHANQING, ZENG RONG, CUROU, ZHAO BIAO, WANG ZONGZE, WU JINPENG, GAN ZHIZHENG, ZHANG LONG
Принадлежит:

The invention provides a high-voltage direct-current converter and a control method, the direct-current converter comprises three phases of bridge arms which are connected in parallel, each phase of bridge arm comprises two sub-bridge arms, each sub-bridge arm is provided with a hybrid module valve string, and the hybrid module valve string can form a full-control valve form, a half-control valve form and a hybrid valve form. According to the invention, various forms of the direct current converter can be flexibly switched and adapted.

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Номер записи: 7
01-08-2023 дата публикации

Frame-type solid-state direct-current circuit breaker

Номер: CN116526418A
Автор: ZHONG JIANYING, DENG YUAN, YU ZHANQING, FAN NAIYUAN, ZENG RONG, CUROU, YAN XIN, GAN ZHIZHENG, ZHANG GONGYI, FENG JIAN, ZHANG LONG
Принадлежит:

The invention belongs to the technical field of direct-current power transmission, and discloses a frame-type solid-state direct-current circuit breaker. The frame-type solid-state direct-current circuit breaker comprises a primary chamber, a secondary chamber, a solid-state switch, a fan assembly, wire inlet and outlet sleeves and a busbar, the primary chamber and the secondary chamber are each internally provided with a containing cavity, and the secondary chamber is detachably connected with the primary chamber. The solid-state switch is arranged in the primary chamber, a first ventilation hole matched with an air inlet of the fan assembly is formed in one side of the primary chamber, the fan assembly is arranged outside the first ventilation hole and connected with the primary chamber, and a plurality of second ventilation holes are formed in the side, opposite to the first ventilation hole, of the primary chamber; the number of the incoming and outgoing line sleeves is two, the incoming ...

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Номер записи: 8