四桥臂有源电力滤波器三维空间矢量调制技术的研究

摘要

APF with three-phase four-leg topological structure can suppress harmonic currents and compensate three-phase unbalance. The topological structure of the system isintroduced. The control strategy of APF was obtained based on the modeling analysis of the four-leg voltage-source converter. The three-dimensional space vector modulation (3D-SVM> for APF is also analyzed in detail. An experimental prototype was built. The experimental results validate that the control strategy and 3D-SVM is correct and effective.%三相四桥臂拓扑结构的有源电力滤波器(APF)不但能抑制谐波电流,也能补偿三相不平衡.在此介绍了系统的拓扑结构;通过对四桥臂电压型变换器进行建模分析,得到了APF的控制策略;详细分析了APF的三维空间矢量脉宽调制法(3D-SVM);最后搭建了一台实验样机.实验结果验证了控制策略和调制方法的正确性和有效性.