三相动态电压恢复器的主电路研究

Main circuit of three phase dynamic voltage restorer

针对以往研究的三相动态电压恢复器 ,提出基于三相电压型逆变电路的动态电压恢复器 ,并分析其主电路拓扑 ,提出主电路几项参数的设计方法 ,同时对比不同变压器接法对参数和电路性能的影响。对变压器星形连接和三角形连接的DVR进行了MATLAB仿真 ,并采用变压器星形连接的结构进行了实验。仿真和实验结果验证了参数设计方法和不同变压器接法对动态电压恢复器性能的影响。

The main circuit topology of three phase DVR is analyzed,the design method of the parameters of the main circuit is presented and different ways of transformer winding connection are compared.The Y-connection and delta conˉnection of transformer in DVR has been simulated with MATLAB.The Y-connection is used in the experiment.The simuˉlation and experimental results showthe parameters design method and the compensation effect of DVR in power quantity problems.