Xinjiang Goldwind Science & Technology Co., Ltd.

Beijing Etechwin Electric Co., Ltd.

Goldwind Science & Technology Co., Ltd.

Chengzhi Qin

Xin Chen

Jie Zhou

Shaohua Zhang

Yuanyan Huang

Shuaiyang Zhao

Yunhai Lan

The present application provides a method and a system for controlling continuous high voltage ride-through and low voltage ride-through of a permanent magnet direct-driven wind turbine. The method includes: determining a transient time period during which the wind turbine is transitioned from a high voltage ride-through state to a low voltage ride-through state; controlling the wind turbine to provide, during the transient time period, a gradually increasing active current to the point of common coupling; and controlling the wind turbine to provide, during the transient time period, a reactive current to the point of common coupling according to an operation state of the wind turbine before the high voltage ride-through state.

Control method and system for continuous high and low voltage ride through of permanent-magnet direct-drive wind-driven generator set

Provided in the present invention are a microgrid control system and a microgrid, the microgrid control system comprising: a grid-connected switch, an energy router, a first controller and a second controller; the first controller controls the grid-connected switch and sends a first control instruction; the second controller receives the first control instruction and responds to the first control instruction for controlling the energy router.

Microgrid control system and microgrid

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Beijing, China

Chengzhi Qin