D-STATCOM一种新型的双滞环电流控制法  

A Novel Double Hysteresis Current Control Method for D-STATCOM

作　　者：常鲜戎[1] 吴超[1] 

机构地区：[1]新能源电力系统国家重点实验室,华北电力大学,河北保定071003

出　　处：《电力电子技术》2014年第10期70-73,共4页Power Electronics

摘　　要：配电网静止同步补偿器(D-STATCOM)对补偿指令电流的跟踪性能直接影响其补偿效果。传统的滞环电流跟踪控制法具有实现简单、动态响应快,但开关频率高且波动范围较大的特点;基于电压空间矢量的滞环电流控制法能有效降低开关频率,提高直流电压的利用率,但较大的运算量会影响对补偿指令电流的跟踪效果。结合两种方法的优点,提出了一种新型双滞环电流控制方法,在保证对补偿指令电流较高跟踪精度的同时,有效降低开关器件的开关频率来改善D-STATCOM。最后通过实验证实了该方法的正确性和可行性。The tracking performance to compensation command current of distribution static synchronous compensator （D-STATCOM） directly affects it＇s compensation effect.The traditional hysteresis current tracking control method has features of simple to realize,fast dynamic response speed,but high switching frequency with large fluctuation range.Hysteresis current control method based on voltage space vector can effectively reduce the switching frequency,improve the use efficiency of DC voltage,but a large amount of calculation of this method will affect the tracking effect to compensation current.Combine the advantages of both methods,a novel double hysteresis current control method is proposed,and this method improves D-STATCOM from reducing switching frequency of the switching device and ensuring a high tracking accuracy to compensation command current.Finally,experimental results verify the correctness and feasibility of the proposed method.

关 键 词：静止同步补偿器 电流跟踪 双滞环 电流控制 

分 类 号：TN715[电子电信—电路与系统]