未知負載情況下PWM逆變器的自適應(yīng)重復(fù)控制

摘要：本文提出了一種自適應(yīng)重復(fù)控制方案并將其應(yīng)用于脈寬調(diào)制逆變器，這種控制方法可以自適應(yīng)地消除由交流源中未知的周期負載擾動而引起的周期性失真。仿真和實驗的結(jié)果都證明了基于DSP的自適應(yīng)重復(fù)控制器即使在大的負載擾動下也能獲得良好的動態(tài)響應(yīng)和低的THD. 敘詞：自適應(yīng)重復(fù)控制 數(shù)字信號處理控制 脈寬調(diào)制逆變器 Abstract：An adaptive repetitive control scheme is presented and applied to the control of a pulsewidth-modulated (PWM) inverter used in a high-performance ac power supply. The proposed control scheme can adaptively eliminate periodic distortions caused by unknown periodic load disturbances in an ac power supply. Keyword：adaptive repetitive control DSP control pulsewidth-modulated inverter