Journal article
A Simple and Cost-effective Precharge Method for Modular Multilevel Converters by Using a Low-Voltage DC Source
Abstract
A simple and cost-effective precharge method for modular multilevel converter (MMC) by using a low-voltage direct current (dc) source is proposed in this paper. The submodule (SM) capacitors in MMC are required to be precharged to their nominal voltage values at start-up to ensure MMC work normally. Conventional methods perform the precharging either through grid side or dc side by using costly high-voltage bypass breakers, charging resistors …
Authors
Tian K; Wu B; Du S; Xu DD; Cheng Z; Zargari NR
Journal
IEEE Transactions on Power Electronics, Vol. 31, No. 7, pp. 5321–5329
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
DOI
10.1109/tpel.2015.2484222
ISSN
0885-8993