吴昊,胡鹏飞,辛焕海,汤波.直流电容电压自同步控制下的永磁直驱风机低电压穿越控制策略[J].电测与仪表,2025,62(12):202-210. Wu Hao,Hu Pengfei,Xin Huanhai,Tang Bo.Low-voltage ride through control strategy of permanent magnet direct-driven fan under DC capacitor voltage self-synchronization control[J].Electrical Measurement & Instrumentation,2025,62(12):202-210.
直流电容电压自同步控制下的永磁直驱风机低电压穿越控制策略
Low-voltage ride through control strategy of permanent magnet direct-driven fan under DC capacitor voltage self-synchronization control
With the large-scale access of new energy such as wind power to the grid, the inertia of the power system is reduced, the frequency modulation ability is reduced, and the dynamic performance of the phase-locked loop under the weak current network is deteriorated. The effectiveness of the low-voltage ride-through control strategy of the permanent magnet direct-driven wind turbine based on the phase-locked loop grid-connected is greatly reduced. Therefore, a low-voltage ride-through control strategy of the permanent magnet direct-driven wind turbine based on the DC capacitor voltage self-synchronization control is proposed. Firstly, the control strategy introduces the DC capacitor voltage self-synchronization control unit into the unit control, so that the wind turbine does not need to rely on the traditional phase-locked loop structure for grid connection; Secondly, the super-capacitor energy storage system is paralleled at the DC side of the unit to build an integrated wind storage system to achieve power balance and improve the control of the grid-side converter, provide reliable reactive support during the low voltage ride through of the wind turbine, and improve the low voltage ride through capability of the permanent magnet direct-driven wind turbine; Finally, the effectiveness of the control strategy is verified by MATLAB/Simulink simulation.
