系统辨识在UPS逆变器无差拍控制中的应用

System identification used in the deadbeat controlled UPS inverter

介绍了正弦波逆变电源无差拍控制的基本原理 ,分析了控制系统的稳定性和参数灵敏性 ,在此基础上提出了利用离线辨识系统结构参数实现无差拍控制器的精确设计。实验结果表明 ,利用该方法设计的无差拍控制正弦波逆变器系统稳定性好、输出电压波形畸变率低 ,具有一定的实际应用价值。

The paper introduces the basic theory of the deadbeat control strategy for sine wave inverters, then proposes a method used for parameter design of the deadbeat controller based on system identification by analysis on the stability and parameter sensitivity of deadbeat control system. The experimental results prove that the sine wave inverter designed by this method have good stability and high quality output voltage and can be applied in practice.