Loss analysis of two kinds of flexible HVDC converters

Author

Liu, Jiantao ; Yao, Jianguo ; Yang, Shengchun ; Wang, Ke

Author_Institution

China Electr. Power Res. Inst., Nanjing, China

Volume

3

fYear

2012

fDate

2-5 June 2012

Firstpage

1669

Lastpage

1674

Abstract

The two-level voltage source converter (2Level-VSC) with IGBTs directly in series and the modular multi-level converter (MMC) are two kinds of the most mainstream converters used in flexible HVDC, the external features of both of the converters are similar, however, their characteristics of losses are different and that affects their economy and applicable workplace. Based on the device parameters provided by the manufacturer, a general loss calculation model is proposed which is applicable to estimate the losses of both of the converters. Through analyzing the working status of devices of the two kinds of converters, loss calculation procedures of the two are analyzed detailedly. Finally, loss characteristics of 2Level-VSC and MMC are analyzed quantitatively through examples, the results show that the loss characteristics of the two kinds of converters are different, and the efficiency of MMC is higher than 2Level-VSC with IGBTs directly in series under different conditions.

Keywords

HVDC power convertors; HVDC power transmission; insulated gate bipolar transistors; IGBT; applicable workplace; economy; flexible HVDC converters; loss analysis; mainstream converters; modular multilevel converter; two-level voltage source converter; HVDC transmission; Insulated gate bipolar transistors; Power conversion; Reactive power; Switches; Switching loss; MMC; flexible HVDC; loss; two-level converter;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference (IPEMC), 2012 7th International

Conference_Location

Harbin

Print_ISBN

978-1-4577-2085-7

Type

conf

DOI

10.1109/IPEMC.2012.6259086

Filename

6259086