Type Ⅱ asymmetric CHB multilevel inverter SHEPWM power balance control strategy

被引：0
|
作者：
Ye M.-Y. [1 ]
Song G.-Z. [1 ]
Kang X. [2 ]
Wei Q.-W. [1 ]
Ren W. [1 ]
机构：
[1] School of Electrical and Automation Engineering, East ChinaJiaotong University, Nanchang
[2] State Grid Jiangxi Electric Power Company Ji'an Power Supply Branch, Ji'an
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2021年 / 25卷 / 09期
关键词：
Equivalent splitting; Fundamental amplitude; Harmonic elimination equations; Power balance control; Selected harmonic elimination PWM; Ⅱ asymmetric cascaded multilevel inverters;
D O I：
10.15938/j.emc.2021.09.012
中图分类号：
学科分类号：
摘要：
In order to solve the problem of unbalanced output power of each level unit in type Ⅱ asymmetric cascaded H-bridge(ACHB) multilevel inverter with DC side voltage ratio of 1:2:4, the traditional selected harmonic elimination(SHEPWM) modulation is improved and a power equalization control strategy is proposed. Based on the redundancy of output phase voltage of type Ⅱ ACHB multilevel inverter, the expression of fundamental amplitude equation in harmonic elimination equations is equivalently split. It ensures that the output phase voltage is periodic symmetrical voltage waveform and realizes the power balance of each series H-bridge unit in one output cycle, obtains the solution of harmonic elimination equations through multi population genetic algorithm, which eliminates the specific low-order harmonics and makes the inverter output high-quality voltage waveform. The experimental platform of three unit fifteen-level type Ⅱ ACHB multilevel inverter was built, and the above power equalization control strategy was analyzed and verified by simulation. The experimental results verify the feasibility and correctness of the strategy. © 2021, Harbin University of Science and Technology Publication. All right reserved.
引用
收藏
页码：104 / 111
页数：7
相关论文
共 17 条
  • [1] YE Manyuan, NIE Yu, Research on the control of three-phase cascaded H-bridge photovoltaic grid connection, Journal of East China Jiaotong University, 36, 2, pp. 99-104, (2019)
  • [2] HUANG Haihong, WANG Chao, WANG Haixin, DC side voltage control of H-bridge cascaded APF with asymmetric network voltage, Electric Machines and Control, 20, 3, (2018)
  • [3] QIU Dongyuan, ZHANG Bo, PAN Hong, Study on general structure and principle of cascaded multilevel converter, Transactions of China Electrotechnical Society, 20, 3, (2005)
  • [4] XU Yaming, CHEN Zhong, NA Xianlong, Power equalization modulation strategy for cascaded inverters based on carrier reconfiguration, Transactions of China Electrotechnical Society, 33, 12, (2018)
  • [5] WANG Shunliang, SONG Wensheng, FENG Xiaoyun, A fast voltage balancing method for single-phase cascaded H-bridge rectifier, Electric Machines and Control, 20, 5, (2016)
  • [6] MAURICIO Angulo, PABLO Lezana, SAMIR Kouro, Et al., Level-shifted PWM for Cascaded Multilevel Inverters with Even Power Distribution, 2007 IEEE Power Electronics Specialists Conference, (2007)
  • [7] SUN Yifeng, RUAN Xinbo, Power balance control strategy of cascaded multilevel inverter, Proceedings of the CSEE, 26, 4, (2006)
  • [8] YE Manyuan, KANG Xiang, CAI Hong, SHEPWM power balance control strategy of cascaded multilevel inverter, ACTA Energiae Solaris Sinica, 16, 9, (2014)
  • [9] ZHANG Yun, SUN Li, WANG Yaoqiang, Power equalization method for asymmetric hybrid multilevel inverter, Proceedings of the CSEE, 25, 6, (2010)
  • [10] MANJREKAR M D, LIPO T A., A hybrid multilevel inverter topology for drive applications, Proc. of IEEE APEC, (1998)
12