基于模糊自整定PI控制和重复控制的单相正弦脉宽调制逆变电源复合控制方案

A COMPOUND CONTROL SCHEME FOR SINGLE PHASE SPWM INVERTER BASED ON ADAPTIVE FUZZY PROPORTIONAL-INTEGRAL CONTROL AND REPETITIVE CONTROL

提出了一种基于模糊自整定比例积分(ProportionalIntegral,PI)控制和重复控制的新型单相正弦脉宽调制(SinusoidalPulseWidthModulation,SPWM)逆变电源控制方案。利用模糊自整定PI控制增强系统抵抗参数变化和各种非线性不确定扰动的能力,改善了系统的动态特性;利用重复控制改善系统的稳态特性和增强系统克服同频率扰动的能力。仿真实验结果表明,该控制方案使正弦波逆变电源系统获得了良好的稳态和动态性能,在系统含有不同扰动频率时仍具有较好的控制品质。

Integrating adaptive fuzzy proportional integral (PI) control and repetitive control, a novel control scheme for single phase sinusoidal pulse width modulation (SPWM) inverter is proposed. The adaptive fuzzy PI control is used to enhance the ability of the control system to withstand the parameter variations and nonlinear uncertain disturbances, so the dynamic characteristic of the control system can be improved; the repetitive control is used to improve the steady-state characteristic of the control system and enhance its ability to withstand the disturbance with same frequency. Simulation results show that the proposed control scheme can endow the SWPM inverter with good steady state and dynamic performance and the control system can keep better control quality under disturbances with different frequencies.