南方电网技术2017，Vol.11Issue(11)：34-40,7.DOI:10.13648/j.cnki.issn1674-0629.2017.11.006
基于双Buck电路的改进MMC变换器研究
Research on Improved MMC Converter Based on Dual Buck Circuit
马覃峰 1邵震霞 2欧阳可凤 1王寅 1肖建民 2沈刚2
作者信息
- 1. 贵州电网有限责任公司电力调度控制中心,贵阳 550002
- 2. 南京南瑞继保电气有限公司,南京 211102
- 折叠
摘要
Abstract
Modular multilevel converter (MMC) converter is widely used in the application of high voltage large power scenarios,but the shoot-through problem in bridge topology places MMC converter at a serious risk of capacitor short-circuit.A novel MMC converter based on dual buck circuit is designed,where the base cell of the MMC converter is not bridge circuit but dual buck circuit.MMC converter based on dual buck circuit eliminates the risk of shoot-through and reverse-recovery of body diode.The details of working principle and operating modes are analyzed.Control method based on switching of capacitor with maximum (minimum) capacitance sequence is given to realize the balancing control of capacitance voltage.Simulation results on Saber are identical with the theory,which verifies the stability of the system can be improved.关键词
MMC变换器/双Buck电路/桥臂直通/电容投切Key words
MMC converter/dual buck circuit/shoot-through problem in bridge/switching of capacitor分类
信息技术与安全科学引用本文复制引用
马覃峰,邵震霞,欧阳可凤,王寅,肖建民,沈刚..基于双Buck电路的改进MMC变换器研究[J].南方电网技术,2017,11(11):34-40,7.
