|Table of Contents|

Research on CPS-TPWM strategy for cascaded multilevel inverter(PDF)


Research Field:
Publishing date:


Research on CPS-TPWM strategy for cascaded multilevel inverter
Yang Jianfeng12Yang Hang1Zhao Tian1
1.School of Automation and Electrical Engineering; 2.Key Laboratory of Opto-Technology andIntelligent Control Ministry of Education,Lanzhou Jiaotong University,Lanzhou 730070,China
cascaded multilevel inverters carrier phase shifting technique trapezoidal waves utilization rate of direct current voltage
For the issue of the low utilization rate of direct current(DC)voltage with the traditional multilevel modulation strategy,a carrier phase shifting trapezoidal pulse width modulation(CPS-TPWM)strategy for the cascaded multilevel inverter(CMI)is proposed here.The relation of the trapezoidal wave triangular factor σ with the fundamental amplitude and the harmonic content of the CMI output is deduced based on the mathematical analysis of the carrier phase shifting technique.By choosing the appropriate σ value and making the CMI process possessing the better harmonic performance,the fundamental amplitude of output voltage is greatly improved by the proposed modulation strategy.A three-phase nine-level CMI model is built by the Matlab/Simulink,and the simulation results verify the correctness and the feasibility of the proposed method.


[1] 李建林,许鸿雁,高志刚,等.级联H桥五电平变流器工况分析与验证[J].电工技术学报,2007,22(4):85-91.
Li Jianlin,Xu Hongyan,Gao Zhigang,et al.Analysis and validation of cascade H-bridge five-level converter[J].Transactions of China Electrotechnical Society,2007,22(4):85-91.
Shan Qingxiao,Li Yongdong,Pan Mengchun.A review on cascaded inverter[J].Transactions of China Electrotechnical Society,2004,19(2):1-9.
[3]Bhagwat P,Stefanovic V.Generalized structure of a multilevel PWM inverter[J].IEEE Transactions on Industry Applications,1983,19(5):1057-1069.
[4]Nabae A,Takahashi I,Akagi H.A new neutral point clamped PWM inverter[J].IEEE Transactions on Industry Applications,1981,17(5):518-523.
[5]Manjrekar M,Steimer P,Lipo T.Hybrid multilevel power conversion system:a competive solution for high-power applications[J].IEEE Transactions on Industry Applications,2000,36(3):834-841.
Wang Liqiao,Qi Fei.Novel carrier phase-shifted SPWM for cascade multilevel converter[J].Proceedings of the CSEE,2010,30(3):28-34.
Guan Eryong,Song Pinggang,Ye Manyuan.Three-phase inverter with four bridge legs based on three harmonic injection method[J].Transactions of China Electrotechnical Society,2005,20(12):43-46.
Yang Hang,Yang Jianfeng,Wang Shuai.Study on multilevel inverter based on carrier phase shifting THI-PWM technique[J].Electrical Measurement & Instrumentation,2016,53(12):98-102.
Li Jianlin,Zhao Dongli,Zhao Bin,et al.Cascade H-bridge converter with carrier phase shifted SPWM technique and its application in active power filter[J].Proceedings of the CSEE,2006,26(10):109-113.
[10]Yonezawa H,Taniguchi K,Morizane T.Modified trapezoidal modulating signal suitable for PM synchronous motor drives[J].IEEJ Transactions on Industry Applications,2005,125(1):46-53.


Last Update: 2017-09-30