To further enhance the performance of Static Synchronous Compensator (STATCOM), a control method for SVPWM -based STATCOM using active -reactive current decouple under dq coordinate system is proposed. STATCOM with active-reactive current decouple based on dq coordinate system can precisely and quickly follow the reference current. It can lower switching frequency, enhance DC voltage utilization by proposing SVPWM. A simulation model based on this method is built in the Matlab platform. The simulation results show that, the proposed control method can make sure STATCOM precisely and quickly compensate reactive power, improve the power factor, stabilize the DC voltage. It has excellent dynamic and steady -state characteristics, and has some significance for the practical application.%为进一步提高静止同步补偿器(STATCOM)的性能,提出了一种基于dq坐标系下有功无功电流解耦电压空间矢量(SVPWM)控制方法.dq坐标系下有功无功电流解耦可以精确快速跟踪指令电流；空间电压矢量调制技术的引入,可以降低开关频率,提高直流电压利用率.在Matlab平台搭建了基于该控制方法的仿真模型,仿真结果表明:提出的控制方法可以精确快速补偿电网无功功率,提高功率因数,稳定直流侧电压,系统具有良好的动静态特性,对实际应用有一定参考价值.
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