双滞环空间矢量电流控制的三电平有源滤波器  

Three-level APF Based on Dual-hysteresis Space-vector Current Control

作　　者：赵钢[1] 邵广时 ZHAO Gang;SHAO Guangshi(Tianjin Key Laboratory of Control Theory&Application in Complicated System,Tianjin University of Technology,Tianjin 300384,China)

机构地区：[1]天津理工大学自动化学院天津市复杂控制理论与应用重点实验室,天津300384

出　　处：《电力系统及其自动化学报》2018年第4期131-136,共6页Proceedings of the CSU-EPSA

摘　　要：为了克服传统有源滤波器开关频率波动较大和电流跟踪效果较差的问题,提出了一种双滞环空间矢量控制的电流跟踪方法,并应用于三电平有源滤波器。该方法以同时减少开关频率和电流跟踪误差为目标,直接在复平面上进行控制,通过判断误差电流矢量幅值的大小,运用双滞环控制方案对开关频率进行优化,能够在满足输出电流误差要求的前提下有效减小开关频率,并采用脉宽调制技术,实现对指令电流进行精确跟踪。结果表明该方案实时性高、鲁棒性强、具有良好的谐波补偿性能。In order to overcome the shortcomings such as the volatility of switching frequency of active power filter(APF)and the poor current-tracking performance,acurrent-tracking method is proposed in this paper with the dual-hysteresis space vector control,which can be applied to a three-level APF.With the objectives of reducing the switching frequency and current-tracking error simultaneously,the control of the proposed method falls on the complex plane directly.By determining the magnitude of error current vector,dual-hysteresis control scheme is used to optimize the switching frequency,which can effectively reduce the switching frequency on the premise of satisfying the output current error.Moreover,pulse width modulation technology is adopted to accurately track the current instruction.The results show that the proposed schema is highly real-time and robust,and has good harmonic compensation performance.

关 键 词：三电平有源滤波器 电流跟踪控制 双滞环空间矢量 误差电流矢量 开关频率 

分 类 号：TM464[电气工程—电器]