Loss calculation method and loss characteristic analysis of MMC based VSC-HVDC system

Author

Li, Jianguo ; Zhao, Xiongguang ; Song, Qiang ; Rao, Hong ; Xu, Shukai ; Chen, Ming

Author_Institution

Department of Electrical Engineering, Tsinghua University, Beijing, China

fYear

2013

fDate

28-31 May 2013

Firstpage

1

Lastpage

6

Abstract

Modular Multilevel Converter (MMC) has been accepted as the most competitive alternative for Voltage Source Converter (VSC) HVDC application. It is a very important issue to evaluate the converter losses and efficiency for a VSC-HVDC installation. A method is proposed to calculate the losses of a MMC using a digital calculation way. The switching waveforms are simulated in the digital calculation and the voltage and current waveforms of a line-frequency period are thereby obtained. Then using the parameters provided in the device datasheet, the switching losses and conduction losses can be obtained. A digital calculation program was developed and the converter losses of a MMC are calculated for various operating conditions. The losses of various devices in a submodule are calculated. The impacts of the switching frequency and circulating current are also comprehensively analyzed.

Keywords

Employee welfare; Insulated gate bipolar transistors; Power conversion; Switches; Switching frequency; Switching loss; Modular Multilevel Converter; VSC-HVDC; converter losses;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics (ISIE), 2013 IEEE International Symposium on

Conference_Location

Taipei, Taiwan

ISSN

2163-5137

Print_ISBN

978-1-4673-5194-2

Type

conf

DOI

10.1109/ISIE.2013.6563615

Filename

6563615