| Title |
Redundancy Module Operation Analysis of MMC using Scaled Hardware Model |
| Authors |
유승환(Yoo, Seung-Hwan) ; 신은석(Shin, Eun-Suk) ; 최종윤(Choi, Jong-Yun) ; 한병문(Han, Byung-Moon) |
| DOI |
https://doi.org/10.5370/KIEE.2014.63.8.1046 |
| Keywords |
MMC (Modular Multi-level Converter) ; SM (sub-module) ; DC voltage balancing ; Redundancy module ; Harmonic reduction ; EAM(Equal Area Modulation) ; SHE (Selective Harmonic Elimination) ; NLC (Nearest Level Control) |
| Abstract |
In this paper, a hardware prototype for the 10kVA 11-level MMC was built and various experimental works were conducted to verify the operation algorithms of MMC. The hardware prototype was designed using computer simulation with PSCAD/EMTDC software. After manufactured in the lab, the hardware prototype was tested to verify the modulation algorithms to form the output voltage, the balancing algorithm to equalize the sub-module capacitor voltage, and the redundancy operation algorithm to improve the system reliability. The developed hardware prototype can be utilized for analyzing the basic operation and performance improvement of MMC according to the modulation and redundancy operation scheme. It also can be utilize to analyze the basic operational characteristics of HVDC system based on MMC. |