A Novel Modulation Scheme and Voltage Balancing Algorithm for Modular Multilevel Converter

被引：0
|
作者：
Dekka, Apparao [1 ]
Wu, Bin [1 ]
Zargari, Navid R. [2 ]
机构：
[1] Ryerson Univ, Dept Elect & Comp Engn, Toronto, ON M5B 2K3, Canada
[2] Rockwell Automat, Medium Voltage Dr R&D, Cambridge, ON N1R 5X1, Canada
来源：
2015 THIRTIETH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2015) | 2015年
关键词：
Capacitor voltage balancing; modular multilevel converter (MMC); phase-shifted carrier pulse width modulation (PSC-PWM); pulse width modulation (PWM); three-level flying capacitor converter (3L-FC); PULSE-WIDTH MODULATION; REQUIREMENTS; INVERTER;
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 presents a low cost, less computational pulse width modulation scheme for a modular multilevel converter (MMC). In the present control approach, the reference output voltage is generated by averaging the two nearest voltage levels. The switching states corresponding to the two nearest voltage levels and their duty cycles are obtained from the instantaneous value of reference output voltage. The proposed modulation scheme is easily extended to any number of submodules per arm without any modifications. In addition, a voltage balancing algorithm is proposed for the balancing of submodule capacitors voltage. The performance of the proposed modulation scheme and voltage balancing algorithm is evaluated on the 2MVA/6kV MMC system with three-level flying capacitor submodules. Also, the proposed modulation scheme is compared with the conventional phase-shifted carrier pulse width modulation (PSC-PWM) scheme and the results are presented.
引用
收藏
页码：1227 / 1233
页数：7
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