Enhanced Voltage Balancing of a Flying Capacitor Multilevel Converter Using Phase Disposition (PD) Modulation

被引：0
|
作者：
McGrath, B. P. [1 ]
Holmes, D. G. [1 ]
机构：
[1] Monash Univ, ECSE Dept, Melbourne, Vic 3004, Australia
来源：
2009 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION, VOLS 1-6 | 2009年
关键词：
Multilevel converter; flying capacitor; natural balance; phase disposition; MULTICELL CONVERTERS; INVERTER; DRIVES;
D O I：
暂无
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：
This paper analyses the natural voltage balancing characteristic of a three phase flying capacitor multilevel converter when it is operated under the spectrally optimal Phase Disposition (PD) PWM strategy. Using this analysis, it is shown that PD PWM has superior balancing characteristics compared to the Phase Shifted Carrier (PSC)PWM strategy, because it places more spectral energy into the differential mode sideband harmonics that drive the voltage balancing process. From this understanding, an enhanced balance booster filter network connection is proposed that significantly improves the natural balancing response of a flying capacitor converter for either PWM strategy. The analysis is confirmed by extensive simulation and experimental studies.
引用
收藏
页码：2569 / 2576
页数：8
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