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

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2017年05期
Page:
596-
Research Field:
Publishing date:

Info

Title:
Research on CPS-TPWM strategy for cascaded multilevel inverter
Author(s):
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
Keywords:
cascaded multilevel inverters carrier phase shifting technique trapezoidal waves utilization rate of direct current voltage
PACS:
TM464
DOI:
10.14177/j.cnki.32-1397n.2017.41.05.010
Abstract:
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.

References:

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Last Update: 2017-09-30