基于重復控制與極點配置的SPWM逆變電源研究

摘要：提出了一種基于重復控制和帶積分狀態反饋控制的逆變電源控制策略，建立了單相電壓型逆變電源的狀態空間數學模型。重復控制抑制了穩態電壓畸變，狀態反饋控制改善了動態性能，而引入積分控制，則改善了狀態反饋控制的穩態精度。這種控制策略使逆變電源獲得了良好的穩態和動態特性。 敘詞：SPWM逆變電源 建模與仿真 重復控制 積分控制 極點配置 Abstract：An inverter control system based on repetitive control and instantaneous feedback control is presented. The state-space mathematical model of the single-phase voltage-source-inverter power supply is derived. Repetitive control is used to reduce voltage distortion, the state feedback control is for the improvement of the dynamic characteristics and the introduction of integral function in the state feedback control reduces the steady-state error. With this scheme, the inverter shows good steady-state and dynamic characteristics. Keyword：SPWM inverter; Modeling and simulation, Repetitive control, Integral control, Pole assignment