单相级联型五电平逆变器SVPWM控制研究

本文介绍了单相级联型五电平逆变器电路拓扑及其工作原理,详细分析了一种适用于单相五电平逆变器的空间矢量脉宽调制(SVPWM)方法.该方法将单相空间矢量图划分为四个区间,在区间内由两个电压矢量实现对输出电压的合成.最后利用Matlab仿真软件建立了单相五电平逆变器SVPWM算法仿真模型,并在不同调制度下进行仿真,仿真结果验...

Research on SVPWM modulation for single-phase five-level cascaded inverter

The topology and basic principles of single - phase five - level cascaded inverter are presented. A SVPWM algorithm for single -phase five -level inverter is analyzed. Based on the proposed method, the single - phase space vector diagram is divided into four regions, and the output reference voltage vector is synthesized by the two voltage vectors of the region according to the volt - second balance principle. Finally, the simulation of five - level algorithm based on SVPWM algorithm is set up in Matlab and simulated under different modulation. Simulation results prove the validity of the algorithm.