High-quality Output Voltage of Multilevel Cascaded H-bridge Converters with Large Number of Cells with Unequal DC Voltages

被引：7
|
作者：
Marquez, Abraham [1 ]
Leon, Jose I. [1 ]
Monopoli, Vito Giuseppe [2 ]
Zafra, Eduardo [1 ]
Vazquez, Sergio [1 ]
Franquelo, Leopoldo G. [1 ,3 ]
Liserre, Marco [4 ]
机构：
[1] Univ Seville, Dept Ingn Elect, Seville, Spain
[2] Politecn Bari, Dipartimento Elettrotecn & Electtron, V Orabona 4, Bari, Italy
[3] Harbin Inst Technol, Res Intitute Intelligent Control & Syst, Sch Astronaut, Harbin, Peoples R China
[4] Christian Albrechts Univ Kiel, Chair Power Elect, Kaiserstr 2, D-24143 Kiel, Germany
来源：
2019 IEEE 13TH INTERNATIONAL CONFERENCE ON COMPATIBILITY, POWER ELECTRONICS AND POWER ENGINEERING (CPE-POWERENG) | 2019年
关键词：
Harmonic analysis; Pulse width modulation; Multilevel converters; INVERTERS;
D O I：
10.1109/CPE.2019.8862332
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The cascaded H-bridge converter (CHB) is a well-known solution for multiple applications, such as motor drives or flexible ac transmission systems, among others. This paper is focused on a CHB composed by a large number of cells (more than three) operated in general with unequal dc voltages. Under this circumstance, the output voltage spectrum presents high harmonic distortion at twice the carrier frequency and its multiples. In order to analyze this phenomenon, a harmonic distortion analysis of the CHB output voltage is presented. From this mathematical analysis, a modification of the phase-shifted PWM modulation is proposed in order to obtain a better harmonic performance.
引用
收藏
页数：6
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