采用载波移相调制的模块化多电平换流器损耗一致性分析

ZHOU Yingkun

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采用载波移相调制的模块化多电平换流器损耗一致性分析

更新时间：2025-08-13

- 采用载波移相调制的模块化多电平换流器损耗一致性分析
- Automation of Electric Power Systems Vol. 40, Issue 20, Pages: 100-106(2016)
- 作者机构：
  
  高电压与电磁兼容北京市重点实验室(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：
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ZHOU Yingkun. [J]. Automation of electric power systems, 2016, 40(20): 100-106.
DOI：

ZHOU Yingkun. [J]. Automation of electric power systems, 2016, 40(20): 100-106. DOI：

摘要

阐述了模块化多电平换流器的基本工作原理和损耗数值计算方法

应用PLECS仿真软件针对半桥子模块结构

分析了载波移相调制下不同均压、环流抑制方式下的子模块损耗特性

认为在不影响换流器工作状态的前提下

使用能量均衡法均压以及使用三相解耦二次谐波环流抑制算法进行环流抑制时

各子模块损耗分布一致性更高

整体损耗率更低。通过比较

还发现不同工况下的子模块损耗一致性接近。最后

对比了载波移相调制与最近电平控制调制方式下的损耗一致性

认为载波移相调制下子模块损耗一致性更高。

Abstract

The modular multilevel converter(MMC)operation mechanism and the numerical method of loss calculation are reviewed. Based on PLECS under carrier phase shifted sinusoidal pulse width modulation(CPS-SPWM)

the sub-module loss characteristics are analyzed

including different voltage balancing methods and circulating current suppression methods. Regardless of the status of the converter working performance

the comparison shows that

with the voltage balancing method of energy balance and circulating current suppression method of three phase decoupled second harmonic circulation current suppression

the loss distribution consistency of MMC is higher and the loss rate lower. The loss consistency of different working conditions is similar. Finally

the loss consistency of nearest level control(NLC)is compared with that of CPS-SPWM

and it is shown that with CPS-SPWM the sub-module loss consistency is better. This work is supported by National Natural Science Foundation of China(No.51277065)and National High Technology Research and Development Program of China(863 Program)(No. 2012AA050401).

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