中国电机工程学报2016，Vol.36Issue(7)：1987-1998,12.DOI:10.13334/j.0258-8013.pcsee.2016.07.027
一种模块化多电平DC/DC变换器的基频调制策略
A Fundamental Frequency Modulation for Module Multilevel DC/DC Converters
摘要
Abstract
A fundamental frequency modulation strategy was proposed for the modular multilevel DC/DC(M2DC) converter aiming to reduce switching loss of sub-modules and calculation quantity of digital control system. The basic requirements and implementation method of the fundamental frequency modulation strategy were analyzed and a dual- sorting capacitor voltage-balancing strategy that ensures power balance of each sub-module capacitor was proposed. The effect of the fundamental frequency modulation on the design of sub-module capacitor parameter as well as the compatibility of the control system were also analyzed. In order to verify the validity of the fundamental frequency modulation and dual-sorting capacitor voltage-balancing strategy, a simulation model in Matlab/Simulink and a low power prototype were built. The results show that this modulation strategy not only possesses a good compatibility with the control system, but also has a capability to reduce the power loss of switching devices and the stress of the digital control system.关键词
直流电网/模块化多电平DC/DC变换器/基频调制/双排序均压策略/控制系统兼容性Key words
DC grid/modular multilevel DC/DC converter/fundamental frequency modulation/dual-sorting capacitor voltage-balancing strategy/compatibility of control system分类
信息技术与安全科学引用本文复制引用
王新颖,汤广福,陈宇,魏晓光,肖湘宁,丁骁..一种模块化多电平DC/DC变换器的基频调制策略[J].中国电机工程学报,2016,36(7):1987-1998,12.基金项目
国家电网科学技术合作项目《直流电网用高压DC/DC变换器前期技术研究》。 Project Supported by Science and Technology Joint Funds of State Grid《Earlier Research for High Voltage DC/DC Converters Suitable for DC Grids》． （）
