PWM Control and Experiment of Modular Multilevel Converters

被引：152

作者：

Hagiwara, Makoto ^{[1
]}

Akagi, Hirofumi ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Elect & Elect Engn, Tokyo 152, Japan

来源：

2008 IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-10 | 2008年

关键词：

Medium-voltage power conversion; multilevel converters; voltage-balancing control;

D O I：

10.1109/PESC.2008.4591917

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A modular multilevel converter (MMC) is one of the next-generation multilevel PWM converters intended for high- or medium-voltage power conversion without transformers. The MMC consists of cascade connection of multiple bidirectional PWM chopper-cells and floating dc capacitors per leg, thus requiring voltage-balancing control of their chopper-cells. However, no paper has been discussed explicitly on voltage-balancing control with theoretical and experimental verifications. This paper deals with two types of modular multilevel PWM converters with focus on their circuit configurations and voltage-balancing control. Combination of averaging and balancing controls enables the MMCs to achieve voltage balancing without any external circuit. The viability of the MMCs as well as the effectiveness of the PWM control method is confirmed by simulation and experiment.

引用

页码：154 / 161

页数：8

共 17 条

[1] A 6.6-kV transformerless STATCOM based on a five-level diode-clamped PWM converter: System design and experimentation of a 200-V 10-kVA laboratory model [J].