Control and Design of a Modular Multilevel Cascade BTB System Using Bidirectional Isolated DC/DC Converters

被引:121
作者
Akagi, Hirofumi [1 ]
Kitada, Ryohei [2 ]
机构
[1] Tokyo Inst Technol, Dept Elect & Elect Engn, Tokyo 1528552, Japan
[2] Chubu Elect Power Co Inc, Iida Power Ctr, Nagoya, Aichi 4618680, Japan
关键词
Back-to-back (BTB) systems; bidirectional isolated dc/dc converters; multilevel converters; DC-DC CONVERTER; PWM CONVERTER; STATCOM;
D O I
10.1109/TPEL.2011.2107752
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
This paper discusses the control and design of the 6.6-kV back-to-back (BTB) system combining bidirectional isolated dc/dc converters and modular multilevel cascade pulsewidth modulation (PWM) converters. The system consists of multiple converter cells connected in cascade per phase at both front ends. Each converter cell consists of a bidirectional isolated medium-frequency dc/dc converter and two voltage-sourceH-bridge (single-phase full-bridge) PWM converters. Extremely low-voltage steps bring a significant reduction in harmonics and electromagnetic interference emissions to the BTB system. This paper designs, constructs, and tests a single-phase downscaled BTB system rated at 120 V and 3.3 kW to verify the viability and effectiveness, leading to the actual system.
引用
收藏
页码:2457 / 2464
页数:8
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