A Generalized Selective Harmonic Elimination PWM Formulation With Common-Mode Voltage Reduction Ability for Multilevel Converters

Wu, MZ (通讯作者),Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 1H9, Canada.
2021
In this article, a generalized selective harmonic elimination pulsewidth modulation (SHE-PWM) formulation with common-mode voltage (CMV) reduction ability for multilevel converters (MLCs) is presented. The CMV is suppressed by regulating the low-order dominant zero-sequence harmonics (ZSHs) of the three-phase SHE-PWM waveforms. Two formulations are included in the proposed model to achieve the full range operation objective, i.e., with zero low-order ZSHs in low and medium modulation index (m(a)) range and with an optimal third-harmonic injection in high m(a) range. With the proposed formulation, the amplitude of CMV can be effectively reduced for all types of MLCs over the whole m(a) range. Besides, two kinds of solving algorithms, i.e., off-line and real-time based, are introduced to provide efficient solution tools targeted at the proposed model. In this article, a case study with three-level neutral-point clamped inverters is discussed in detail to better illustrate the proposed formulation and the coupling effects between the CMV reduction and capacitor voltage balancing objectives of MLCs. Simulation and experimental results based on multiple MLC topologies are carried out to validate the effectiveness of this generalized SHE-PWM formulation with reduced CMV values.
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷号:36|期号:9|页码:10753-10765
ISSN:0885-8993|收录类别:SCIE
DOI
10.1109/TPEL.2021.3063299
来源机构
University of Alberta; China University of Mining & Technology
EISSN
1941-0107
出版年
2021
资助信息
This work was supported in part by the Natural Sciences and Engineering Research Council of Canada (NSERC) and in part by the National Natural Science Foundation of China under Grants 61973307 and 61936008.
语种
英语
WOS学科分类
Engineering, Electrical & Electronic
被引频次(WOS)
5
180天使用计数
7
2013以来使用计数
15
被引更新日期
2023-02-19
关联机构
兰州大学循证社会科学中心
关键词
Harmonic analysis Pulse width modulation Switches Support vector machines Voltage control Topology Power harmonic filters Common-mode voltage (CMV) multilevel converters (MLCs) selective harmonic elimination (SHE)
资助机构
Natural Sciences and Engineering Research Council of Canada (NSERC) National Natural Science Foundation of China [61973307, 61936008]