有源电力滤波器定频滞环电流控制新策略  

Novel Hysteresis Current Control Method for Active Power Filter with Constant Switching Frequency

作　　者：张竹[1] 张代润[1] 王超[1] 何易桓[1] 

机构地区：[1]四川大学电气信息学院,成都610065

出　　处：《电力系统及其自动化学报》2010年第2期82-85,共4页Proceedings of the CSU-EPSA

摘　　要：简要介绍了瞬时无功功率理论谐波电流检测;提出定频滞环控制新方法应用于三相四线制有源电力滤波器。该方法主要根据电源电压、直流侧电容电压和参考电流信号波形的微分改变滞环电流宽度,实现开关频率的稳定。该方法的特点是不需要增加额外的模拟电路,完全数字化控制。使用Matlab仿真,仿真结果证明了该方法对三相四线有源电力滤波器定频控制是有效可行的。A novel constant switching frequency hysteresis current control technique for three-phase four-wire active power filter is proposed in this paper. The algorithm changes hysteresis band according to supply voltage, de capacitor voltage and slope of reference current wave to realize the fixed switching frequency. The characteristic of the method is absolutely digital controlling without extra analog circuit. Simulation results of Matlab demostrate the proposed method is verfied effective and feasible for three-phase four-wire active power filter current control with fixed switching frequency.

关 键 词：瞬时无功功率理论 三相四线制有源电力滤波器 滞环带宽 定频滞环控制 

分 类 号：TP272[自动化与计算机技术—检测技术与自动化装置]