Li Xianyun

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Researching on interaction between wind farm and power system, it usually uses simple model to describe the wind farm. The wind turbines in a wind farm always suppose as a coherent generator group, every wind turbines have identical wind speed. As wind turbine locates in the different site in the wind farm, the wind speed at each wind turbines will not(More)
This paper proposes a low-voltage ride-through (LVRT) protection scheme without fault current limiter (FCL) on the grid-side inverter (GSI), based on energy balance characteristics of permanent magnet synchronous generator (PMSG) wind power systems during the grid voltage drop. The scheme utilizes a series dynamic braking resistor (SDBR) to consume the(More)
The article study the direct torque control of permanent magnet synchronous in electric vehicle, analyze the torque ripple due to the limited number of voltage space vector. In view of it, current circuit is changed and vector is divided, six new voltage space vectors are used in the control system. Tanks of the new vectors, more vectors can be chosen, and(More)
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