Loss calculation method and characteristics analysis for MMC-HVDC system

被引：10

作者：

Rao, Hong ^{[1
]}

Li, Jianguo ^{[2
]}

Song, Qiang ^{[2
]}

Xu, Shukai ^{[1
]}

Chen, Ming ^{[1
]}

Li, Xiaolin ^{[1
]}

机构：

[1] EPRI of China Southern Power Grid

[2] Department of Electrical Engineering, Tsinghua University

来源：

Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2014年 / 34卷 / 06期

关键词：

Conduction loss; Electric converters; Losses; Modular multilevel converter; Switching loss; VSC-HVDC;

D O I：

10.3969/j.issn.1006-6047.2014.06.018

中图分类号：

TM72 [输配电技术];

学科分类号：

摘要：

The calculation of MMC(Modular Multilevel Converter) loss is very important for the evaluation of VSC-HVDC system efficiency and the design of converter heat radiation, for which, a digital calculation method is proposed. The switching waveforms, voltage waveforms and current waveforms for a power frequency cycle are reproduced by the digital calculation program and the switching losses are acquired from the key parameters of concerned devices. A special calculation program is designed based on the proposed method, and the total losses of MMC-HVDC system are calculated and analyzed in detail for all operating conditions. The differences of loss characteristics among different devices and the impacts of switching frequency and double-frequency circulating current on the MMC loss are analyzed.

引用

页码：101 / 106

页数：5

共 17 条

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