结合空间矢量法的D-STATCOM滞环电流控制方法  

A hysteresis current control method combined with SVPWM for D-STATCOM

作　　者：常鲜戎[1] 殷绕方 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《电力系统保护与控制》2016年第10期60-65,共6页Power System Protection and Control

摘　　要：D-STATCOM的控制方法直接影响其补偿精度、开关频率和功率损耗。为保证D-STATCOM具有较高的补偿精度并降低开关频率,提出了结合空间矢量法的滞环电流控制新方法。通过滞环电流控制法与空间矢量法结合,将D-STATCOM跟踪误差进行分区域处理,针对不同大小的跟踪误差采用不同的控制方法降低开关频率。同时,考虑到采用不同控制方法时D-STATCOM具有不同的补偿延时,对电流误差限值的确定方法进行了分析。仿真和试验样机表明,该方法能有效降低D-STATCOM开关频率且具有较高的补偿精度,证明了方法的正确性和可行性。The control strategy of D-STATCOM directly influence its compensation accuracy, switch frequency and power loss. A novel control strategy is proposed to reduce the switch frequency on the assurance of its compensation accuracy. Combining hysteresis current control method with SVPWM, the control strategy proposes that different current size uses different control method to realize fast track and low switch frequency; at the same time, the determination of current error threshold method is analyzed considering different control strategy has different compensation delay for D-STATCOM. Simulation and experiment show this method can reduce switch frequency efficiently and high compensation accuracy, so the correctness and feasibility of the proposed method is proved.

关 键 词：配电网静止无功发生器 三相四桥臂 滞环电流控制 空间矢量滞环控制 开关频率 

分 类 号：TM761.12[电气工程—电力系统及自动化]