一种适用于牵引供电系统的新并联混合型有源滤波器的研究

Research of a Novel Shunt Hybrid Active Filter for the Traction System

牵引供电系统是电力系统的一个重大分支,它的谐波和无功注入对大电网产生了很大的污染,有必要对其进行滤波及无功补偿。针对单独使用的有源滤波装置容量要求较大的缺点,提出了一种改进后的并联混合型有源滤波器拓扑结构,并对其工作原理进行了理论分析,讨论了相应的控制策略,通过Matlab/Simulink仿真验证了它的谐波抑制和无功补偿性能,结果表明该方案是可行的。

A novel high capacity hybrid active power filter topology based on injection circuit is proposed to meet the requirements of harmonic elimination and high power reactive power compensation in Traction power supply system. The novel high capacity hybrid active power filter can not only compensate high power reactive power hut also eliminate the harmonic current in the power grid. The capacity of its active power filter is decreased and so is its cost. It analyzed its working principle theoretically, discussed the corresponding control strategy. Through Matlab/ simulink simulation its harmonic suppression and reactive power compensation performance are tested; the result shows that the program is feasible.