摘要
介绍一种基于极点配置的逆变器瞬时电压电流PI控制器的设计方法,建立系统模型,为了提高逆变器输出波形的精度,提出了一种基于极点配置的PI双环和重复控制的复合控制方案。该复合控制方案克服了PI双闭环控制方案带整流性负载时输出电压质量不高的缺点,也解决了嵌入式重复控制方案应用在逆变系统中对逆变器谐振峰值不可控的问题。仿真表明,所设计的复合控制方案提高了逆变电源带整流性负载时的输出电压质量,该方案既保持了重复控制良好的稳态特性,也明显改善了系统的动态性能。
The design method of inverter instantaneous voltage - current PI controller based on pole - assignment is proposed. The mathematical models of a single - phase PWM inverter are established. In order to improve the performance of output voltages,a synthesized control system combined repetitive control with PI dualloop control based on pole- assignment for inverters is introduced. The disadvantages of poor output voltage quality in PI double closed loop control scheme which has a rectified load are conquered problems of the resonance peak value being out of control in the embedded repetitive control scheme are resolved. Simulation results indicate that the output voltage quality of inverter power supply with rectified load is improved by designed synthesized control scheme and the proposed system can achieve good steady - state performance as well as dynamic performance.
出处
《现代电子技术》
2009年第22期176-179,共4页
Modern Electronics Technique
关键词
逆变器
极点配置
重复控制
双环控制
inverter
pole assignment
repetitive control
dual-loop control
