重庆理工大学学报（自然科学版）2016，Vol.30Issue(8)：122-128,142,8.DOI:10.3969/j.issn.1674-8425(z).2016.08.020
一种简化的三电平逆变器空间矢量脉宽调制算法
A Simplified Space Vector PWM Algorithm for Three-Level NPC VSI
摘要
Abstract
This paper proposed a simplified space vector pulse width modulation (SVPWM)algorithm for three-level neutral point clamped (NPC)voltage source inverter.The waveform of sinusoidal pulse width modulation (SPWM)symmetric regular sampling is similar to the waveform of seven-segment SVPWMsymmetric regular sampling.The only difference is that the two algorithms have different operation time of zero voltage vectors.Based on two-level inverter and the relationship between SVPWMand SPWM,a simplified SVPWMalgorithm for threelevel NPC VSI was developed.A zero-vector distributi-on variable k,which changes from zero to one,was introduced.On the basis of proposed algorithm,a simple neutral-point voltage balancing method was proposed.Compared with the conventional SVPWM algorithm,the simplified SVPWM algorithm can be more easily imple-mented in a digital device because the algorithm directly uses the instantaneous value of three phase refere-nce voltages to calculate actual gating time for each inverter leg.The simulation results show that proposed method is valid and feasible.关键词
简化 SVPWM算法/三电平逆变器/中点电压平衡/零电压矢量Key words
simplified SVPWM/three-level VSI/neutral point voltage balance/zero voltage vector分类
动力与电气工程引用本文复制引用
丁娅,李山,叶阳建,王程..一种简化的三电平逆变器空间矢量脉宽调制算法[J].重庆理工大学学报（自然科学版）,2016,30(8):122-128,142,8.基金项目
重庆理工大学基金资助项目 （）
