A Delta-Channel Modular Multilevel Converter for Zero/Low-Fundamental-Frequency Operation

被引：7

作者：

Du, Sixing ^{[1
]}

Wu, Bin ^{[1
]}

Zargari, Navid R. ^{[2
]}

机构：

[1] Ryerson Univ, Elect & Comp Engn Dept, Toronto, ON M5B 2K3, Canada

[2] Rockwell Automat, Medium Voltage R&D, Cambridge, ON N1R 5X1, Canada

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2019年 / 66卷 / 03期

关键词：

DC-AC converter; medium-voltage converter; modular multilevel converter (MMC); variable frequency operation; VARIABLE-SPEED DRIVES; CASCADE INVERTER; MOTOR DRIVEN; START-UP; VOLTAGE; SYSTEM;

D O I：

10.1109/TIE.2017.2756582

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper proposes a delta-channel modular multilevel converter (MMC). It aims to overcome the issues of the conventional MMC during zero/low fundamental frequency operation. The proposed converter is characterized by the cross connection of both the upper and the lower three arms through two sets of delta-channel branches. These delta-channel branches timely redistribute power among three phase legs, leading to the minimized submodule capacitor voltage fluctuations, even at zero/low fundamental frequency operation. The inner power balancing through physical channels makes the converter inject no common-mode voltage. A 4160-V, 1-MW simulation model is performed in MATLAB/SIMULINK, and a 208-V, 5-kW experimental setup is constructed in the laboratory. Both the simulation and experimental results verify the feasibility of the proposal.

引用

页码：2227 / 2235

页数：9

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