电力系统自动化2018，Vol.42Issue(2)：77-83,7.DOI:10.7500/AEPS20170329002
基于双队列的模块化多电平换流器子模块调制方法
Dual Queues Based Modulation Method for Sub-modules of Modular Multilevel Converter
刘正富 1杨汾艳 1肖晃庆 2徐政 2刘高任2
作者信息
- 1. 广东电网有限责任公司电力科学研究院,广东省广州市 510080
- 2. 浙江大学电气工程学院,浙江省杭州市 310027
- 折叠
摘要
Abstract
The modulation method for sub-modules (SMs) of modular multilevel converter (MMC) is one of the most important issues in practical engineering.In traditional strategy,the capacitor voltages of SMs need to be detected in real time and ranked in total order.If the number of SMs increases,the requirement of calculating time rises accordingly and the safe and stable operation of converter may be influenced.Hence,a modulation method based on dual queues for MMC is proposed.The on-state queue and off-state queue are established at the initial time and adjusted according to the direction of arm current and the maximum voltage margin during the operation.The capacitor voltages of SMs need not to be sorted in this method and the calculating time can be reduced.The simulation model is developed in PSCAD/EMTDC,and the simulation results prove the validity and the feasibility of the proposed method.关键词
模块化多电平换流器/子模块调制策略/双队列/电容电压均衡Key words
modular multilevel converter/sub-module modulation method/dual queues/capacitor voltage balancing引用本文复制引用
刘正富,杨汾艳,肖晃庆,徐政,刘高任..基于双队列的模块化多电平换流器子模块调制方法[J].电力系统自动化,2018,42(2):77-83,7.
