Research on Carrier-based Improved Synchronized Discontinuous Pulse Width Modulation for Three-level Inverter

被引：0
|
作者：
Gao Z. [1 ,2 ]
Li Y. [1 ,2 ]
Ge Q. [1 ]
Zhao L. [1 ]
Zhang B. [1 ]
机构：
[1] Key Laboratory of Power Electronics and Electric Drive, Institute of Electrical Engineering, Chinese Academy of Sciences, Haidian District, Beijing
[2] University of Chinese Academy of Sciences, Shijingshan District, Beijing
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2020年 / 40卷 / 17期
基金：
中国国家自然科学基金;
关键词：
Carrier-based pulse width modulation; Synchronized discontinuous pulse width modulation (SDPWM); Three-level inverter; Two-level voltage jump; Weighted total harmonic distortion (WTHD);
D O I：
10.13334/j.0258-8013.pcsee.191771
中图分类号：
学科分类号：
摘要：
A carrier-based improved synchronized discontinuous pulse width modulation (ISDPWM) without a two-level voltage jump for the three-level inverter was proposed. Aiming at the defect of two-level voltage jump in traditional SDPWM, the design principle of ISDPWM switching sequence with phase voltage satisfying three-phase symmetry, half-wave symmetry, no two-level voltage jump and three-phase device simultaneous action was firstly analyzed. On this basis, ISDPWM I/II/III/IV which solves the traditional SDPWM defect and ISDPWM A/B/C/D/E/F/G which utilizes the zero level clamping state were designed, and the switching frequency of each ISDPWM was analyzed. By comparing the weighted total harmonic distortion (WTHD) values of each ISDPWM, the WTHD optimal ISDPWM was further obtained. To realize the ISDPWM switching sequence more conveniently, this paper studied the modulation wave and carrier corresponding to each ISDPWM, and proposed carrier-based ISDPWM. Finally, the validity of carrier-based ISDPWM was verified by simulation and experiment, and the results show that it can eliminate even harmonics and triple harmonics without a two-level voltage jump, and its calculation is simple and easy to implement. © 2020 Chin. Soc. for Elec. Eng.
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页码：5620 / 5635
页数：15
相关论文
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