基于无差拍控制的三电平逆变器中点电位控制

doi:10.3969/j.issn.1000-565X.2018.01.005

华南理工大学学报(自然科学版) ›› 2018, Vol. 46 ›› Issue (1): 33-40.doi: 10.3969/j.issn.1000-565X.2018.01.005

基于无差拍控制的三电平逆变器中点电位控制

姚远^1,2 康龙云^1,2† 张志³ 冯元彬^1,2 程建材^1,2

1．华南理工大学电力学院，广东广州 510640; 2．华南理工大学广东省绿色能源技术重点实验室，广东广州 510640; 3．东莞理工学院电子工程与智能化学院，广东东莞 523808

收稿日期:2017-03-08 修回日期:2017-09-11 出版日期:2018-01-25 发布日期:2017-12-01
通信作者: 康龙云(1961-)，男，教授，博士生导师，主要从事电力电子技术，新能源系统技术的研究与开发等研究． E-mail:lykang@scut.edu.cn
作者简介:姚远(1990-)，男，博士生，主要从事变流器方面的研究． E-mail:Heinzyao@ outlook． com
基金资助:
广东省公益研究与能力建设专项资助项目 (2015A010106018); 广东省教育厅高校创新人才项目(2014KQNCX217);广东省教育厅优秀青年教师项目(YQ2015156)

The Neutral Point Potential Regulation of Three-Level Inverter Based on the Deadbeat Control Algorithm

YAO Yuan^1,2 KANG Longyun^1,2 ZHANG Zhi³ FENG Yuanbin^1,2 CHENG Jiancai^1,2

1． School of Electric Power，South China University of Technology，Guangzhou 510640，Guangdong，China; 2． Key Laboratory of Clean Energy Technology of Guangdong Province，South China University of Technology，Guangzhou 510640，Guangdong，China; 3． School of Electrical Engineering ＆ Intelligentization，Dongguan University of Technology，Dongguan 523808，Guangdong，China

Received:2017-03-08 Revised:2017-09-11 Online:2018-01-25 Published:2017-12-01
Contact: 康龙云(1961-)，男，教授，博士生导师，主要从事电力电子技术，新能源系统技术的研究与开发等研究． E-mail:lykang@scut.edu.cn
About author:姚远(1990-)，男，博士生，主要从事变流器方面的研究． E-mail:Heinzyao@ outlook． com
Supported by:
Supported by the Project of Public Welfare Research and Capacity Building of Gunagdong Province(2015A010106018)

摘要/Abstract

摘要： 对二极管箝位型三电平逆变器的中点电位偏移与中点电位波动问题进行了研究．通过对电压矢量与中点电位关系的分析，建立了系统在无差拍控制下的数学模型．在无差拍控制下，结合虚拟矢量调制，经综合判断，对中点电位进行调节．仿真与实验结果表明:与传统方法相比，该方法可以缩短消除中点偏移所需的时间，调节中点电位的能力不受调制度大小的影响，同时该方法可以消除低频的中点电位震荡．

关键词: 中点箝位型, 三电平逆变器, 无差拍控制, 虚拟矢量调制, 中点电位偏移, 中点电位波动

Abstract: In this paper an exploration is performed into midpoint potential migration of NPC three-level inverter and the midpoint potential fluctuation． On the basis of the analysis of the voltage vectors and the midpoint potential，a mathematical model is constructed under the deadbeat control framework． In order to keep the ability to fix the drifted midpoint potential，the virtual voltage vector method is employed． In the proposed algorithm，the vectors applied to modify the midpoint potential are evaluated accordingly． Compared with the conventional algorithm，the time needed to fix the midpoint potential is decreased in this proposed algorithm，and the ability to fix the midpoint potential is in-sensitive to the modulation index． Moreover，the proposed algorithm can eliminate the oscillation of the midpoint po-tential． The validity of the proposed algorithm is verified by the simulation and experiments．

Key words: NPC, three-level inverter, deadbeat control, virtual vector, neutral point potential drifted, neutral point potential oscillation

中图分类号:

TM464

姚远康龙云张志冯元彬程建材. 基于无差拍控制的三电平逆变器中点电位控制[J]. 华南理工大学学报(自然科学版), 2018, 46(1): 33-40.

YAO Yuan KANG Longyun ZHANG Zhi FENG Yuanbin CHENG Jiancai. The Neutral Point Potential Regulation of Three-Level Inverter Based on the Deadbeat Control Algorithm[J]. Journal of South China University of Technology(Natural Science Edition), 2018, 46(1): 33-40.

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[2]	张厚升孙鹤旭. 两三相PWM 整流器并联时零序环流抑制策略[J]. 华南理工大学学报（自然科学版）, 2016, 44(8): 32-38,46.

基于无差拍控制的三电平逆变器中点电位控制

The Neutral Point Potential Regulation of Three-Level Inverter Based on the Deadbeat Control Algorithm

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