基于改进电压空间矢量调制的有源滤波器双滞环电流跟踪控制策略  

Double Hysteresis Current Tracking Control Scheme for Active Power Filter Based on Improved Voltage Space Vector

作　　者：申张亮[1] 郑建勇[1] 梅军[1] 王立峰[1] 王杰[1] 

机构地区：[1]东南大学电气工程学院,江苏省南京市210096

出　　处：《中国电机工程学报》2011年第15期8-14,共7页Proceedings of the CSEE

摘　　要：以同时减小开关频率和电流跟踪误差为控制目标,提出一种电力有源滤波器电压空间矢量双滞环电流跟踪控制的新方法。该方法直接在复平面上实施控制,能够准确给出参考电压矢量,并结合误差电流矢量与双滞环选择优化的开关状态输出。双滞环的运用,有效降低高次谐波分量的同时保证了电流响应速度;电压空间矢量脉宽调制精确合成参考电压矢量,在恒定开关频率的同时提高了直流电压利用率。该控制策略简单可靠,鲁棒性强,易于离散化实现。仿真及实验结果均证明了其可行性及良好的暂稳态补偿性能。This paper proposed an improved control algorithm for shunt active power filters,based on space vector modulation and double threshold hysteresis current controller techniques for current regulated voltage source converters,which allows precise compensation of harmonic currents produced by nonlinear loads and significant reduction in the number of switching.In order to modulate the precise switching vector,the approach which is based on the complex coordinates in which the reference voltage vector calculated and the current error located in double threshold hysteresis are all took into account utilizes all advantages of the space vector modulation and hysteresis current controller technique,which leads to the minimal ripple content while the maximum utilization of the DC bus voltage and the switching frequency kept constant while the fast current response with good current tracking performance,separately.The proposed strategy is simple and reliable for digital control.Simulation and test results of the shunt active power filter shows the performance of the improved control strategy is satisfactory with valid and feasible.

关 键 词：有源滤波器 跟踪控制 电压空间矢量 双滞环电流控制 

分 类 号：TM85[电气工程—高电压与绝缘技术]