模块化多电平换流器子模块平均开关频率的精确控制方法

GUO Yuqun

您当前的位置：

首页 >

文章列表页 >

模块化多电平换流器子模块平均开关频率的精确控制方法

更新时间：2025-08-13

- 模块化多电平换流器子模块平均开关频率的精确控制方法
- Automation of Electric Power Systems Vol. 40, Issue 19, Pages: 94-100(2016)
- 作者机构：
  
  新能源电力系统国家重点实验室(华北电力大学),北京市,102206
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2016
- 稿件说明：
移动端阅览
GUO Yuqun. [J]. Automation of electric power systems, 2016, 40(19): 94-100.
DOI：

GUO Yuqun. [J]. Automation of electric power systems, 2016, 40(19): 94-100. DOI：

摘要

在现有的基于电容电压排序的优化均压算法基础上

提出一种适用于模块化多电平换流器(MMC)的精确控制子模块开关频率的方法。通过引入双保持因子

避免绝缘栅双极型晶体管(IGBT)不必要的反复投切现象

从而在保证各子模块电容电压基本一致的前提下

有效地降低MMC子模块开关频率

减小开关损耗;在此基础上

设计了精确控制子模块开关频率的比例—积分(PI)控制器

能够在降低开关频率的同时精确地控制其大小

保证系统稳定运行和换流器的运行效率;最后

为证明所提出频率控制方法的有效性

在PSCAD/EMTDC中搭建了双端101电平MMC仿真模型

对所提出的方法进行了验证

仿真结果表明该方法可以在保证系统稳定运行的前提下

精确地控制子模块的开关频率

证明了所提出方法的正确性和有效性。

Abstract

According to the existing optimal voltage balancing algorithm based on capacitor voltage sorting

a precision control method of sub-module switching frequency for modular multilevel converters(MMCs)is proposed. First

by introducing the double holding factors

unnecessary repeated switching of the insulated gate bipolar transistor(IGBT)is avoided and the switching frequency is significantly reduced

which decreases the switching losses of converters. Secondly

a proportional-integral(PI)controller is proposed

which is able to accurately control the switching frequency of sub-modules while decreasing the frequency. Third

to validate the effectiveness of the proposed method

a 101-level point-to-point MMC simulation model is developed in PSCAD/EMTDC. The simulation results show that the method is able to accurately control the switching frequency of sub-modules on the premise of guaranteeing stable operation of the system

which proves the rationality and effectiveness of the proposed method. This work is supported by National Natural Science Foundation of China(No. 51177042)and National High Technology Research and Development Program of China(863 Program)(No. 2013AA050105).

关键词

Keywords

references

Views

1800

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

适用于FPGA的模块化多电平换流器电容电压均衡控制方法

基于MMC的中压大功率直流配电方案及其控制方法

低压直流母线AC-DC电力电子变压器及其短路故障穿越方法

Related Author

LIU Ruoping

JIA Ke

WANG Yu

LI Hongliang

MA Dajun

BAI Zhihong

ZHU Sicheng

LI Yu

Related Institution

School of Electrical and Electronic Engineering, Huazhong University of Science and Technology

Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education(Shanghai Jiao Tong University)

Center for Advanced Power-conversion Technology and Equipment, Southeast University

College of Electrical Engineering, Zhejiang University

State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University

⁰