Delta Electronics (shanghai) Co., Ltd

Delta Electronics, Inc.

Yansong Lu

Changyong Wang

Li Chen

Jun Chen

Aibin Qiu

Jianping Ying

Xiao Ling Chen

Wei Huang

Fei Lu

Jingtao Tan

Li Cai

Hao Yu

Jun Liu

Jingxian Kuang

Bo Feng

Tsu-Hua Ai

Shisheng Hou

Zongyu Sun

A power conversion system is coupled between a power grid and a load. The power conversion system includes a battery, a first converter, a second converter and a DC/DC converter. The first converter is configured to selectively convert an input power from the power grid into a first charging power when the power grid is operated normally. The second converter is configured to convert the input power from the power grid into an output power when the power grid is operated normally. The DC/DC converter is electrically connected between the battery and the second converter. The DC/DC converter is configured to convert a storage power in the battery into a backup power when the power grid is not operated normally.

Power conversion system

A high-voltage DC transformation apparatus, a power system and a control method of the power system. The high-voltage DC transformation apparatus is electrically connected to at least one high-voltage DC power generator. The high-voltage DC transformation apparatus includes at least one bidirectional AC/DC conversion module, at least one first transformer and at least one unidirectional rectifier module. A DC terminal of the bidirectional AC/DC conversion module is electrically connected to the corresponding high-voltage DC power generator. The first transformer includes a first transmission terminal and a second transmission terminal. The first transmission terminal is electrically connected to an AC terminal of the corresponding bidirectional AC/DC conversion module. The unidirectional rectifier module includes an input terminal and an output terminal. The input terminal is electrically connected to the second transmission terminal of the corresponding first transformer, and the output terminal is electrically connected to a high-voltage grid.

High-voltage DC transformation apparatus and power system and control method thereof

The present disclosure provides a power module assembly and a converter. The power module assembly includes a power module and a capacitor module, and the power module and the capacitor module are configured to be detachably connected; the power module includes a first bus bar, and the first bus bar includes a first connection portion and a power installation portion connected to the first connection portion; the capacitor module includes a second bus bar, and the second bus bar includes a second connection portion and a capacitor installation portion connected to the second connection portion, wherein the first connection portion and the second connection portion extend along a first direction, and the power installation portion and the capacitor installation portion extend along a second direction; the first connection portion and the second connection portion are connected by a fastener.

Power module assembly and converter

A wind power converting device includes a plurality of grid-side converters, a plurality of generator-side converters and a plurality of DC buses. The grid-side converters are connected with each other in series and electrically coupled to a power grid. The generator-side converters are connected with each other in series and electrically coupled to a generator device. The DC buses are electrically coupled between the grid-side converters and the generator-side converters. The DC buses include a positive DC bus, a negative DC bus and at least one intermediate DC bus between the positive DC bus and the negative DC bus. A cross section area of a conductor of the intermediate DC bus is smaller than 30% of a cross section area of a conductor of the positive DC bus or smaller than 30% of a cross section area of a conductor of the negative DC bus.

Wind power converting device

An energy storage device for a power system is provided. The energy storage device is electrically connected with a high voltage DC transmission grid. The energy storage device includes at least one energy storage element, at least one bidirectional inverter module, at least one medium frequency transformer and at least one bidirectional AC/DC conversion module. A DC terminal of each bidirectional inverter module is electrically connected with the corresponding energy storage element. A first transmission terminal of each medium frequency transformer is electrically connected with an AC terminal of the corresponding bidirectional inverter module. An AC terminal of each bidirectional AC/DC conversion module is electrically connected with a second transmission terminal of the corresponding medium frequency transformer. A DC terminal of each bidirectional AC/DC conversion module is electrically connected with the high voltage DC transmission grid.

Energy storage device and power system and control method thereof

A wind power conversion system includes plural first converting circuits and a second converting circuit. The plural first converting circuits perform a power converting task, and include respective first generator-side terminals and respective first network-side terminals. The first generator-side terminals are electrically connected with a wind power generator. The first network-side terminals are electrically connected with corresponding secondary windings of an isolating transformer. The second converting circuit includes plural second generator-side terminals and a second network-side terminal. The second network-side terminal is electrically connected with the corresponding secondary winding of plural secondary windings of the isolating transformer. The second generator-side terminals are serially connected with the corresponding first generator-side terminals of the first converting circuits. When the second converting circuit is enabled, the power converting task of the plural first converting circuits is shared by the second converting circuit.

Wind power conversion system with plural first converting circuits and a second converting circuit

The configurations of a parallel-connected UPS circuit are provided in the present invention. The proposed circuit includes a neutral, a battery having a positive and a negative terminals, and a plurality of PFC boost converters, each of which includes a PFC circuit including an inductor having a first terminal coupled to the positive terminal and a second terminal, a rectifying bridge coupled to the second terminal of the inductor, and having a first terminal and a second terminal coupled to the negative terminal, a switch bridge having a first terminal coupled to the first terminal of the rectifying bridge and a second terminal coupled to the second terminal of the rectifying bridge, and a control switch having a first terminal and a second terminal coupled to the neutral.

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Shanghai, China

Yansong Lu