基于双环反馈控制的单相UPS逆变器的控制算法研究

Research on control algorithm of single phase UPS inverter based on double loop feedback control

本文针对单相UPS逆变器输出电压、电流波形不稳定和畸变的问题,设计了双环反馈控制算法。分析并建立了单相UPS逆变器控制系统的模型,构建了系统输出电压、电流的反馈环路,分别在开环、单环反馈和双环反馈控制方式下进行仿真,并对比了逆变器输出的电压、电流波形。通过仿真和实验证明该双环反馈控制算法应用在单相UPS逆变器中较开环和单环反馈控制算法具有更好的控制效果。

In this paper, a dual loop feedback control algorithm is designed for the Problem of the single-phase UPS inverter output voltage and current waveform instability and distortion. The model of the control system of single phase UPS inverter is analyzed and established, the feedback loop of the output voltage and current of the system is constructed, and the simulation is carried out in the open loop, single loop feedback and double loop feedback control mode, and then the output voltage and current waveform of the inverter are compared. The simulation and experiment show that the algorithm has better control effect than the open loop and single loop feedback control algorithm for single phase UPS inverter.