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http://dx.doi.org/10.6113/JPE.2019.19.5.1171

Comparison of Capacitor Voltage Balancing Methods for 1GW MMC-HVDC Based on Real-Time Digital Simulator and Physical Control Systems  

Lee, Jun-Min (Department of Electrical Engineering, Pusan National University)
Park, Jung-Woo (Korea Electrotechnology Research Institute)
Kang, Dae-Wook (Korea Electrotechnology Research Institute)
Lee, Jong-Pil (Korea Electrotechnology Research Institute)
Yoo, Dong-Wook (Korea Electrotechnology Research Institute)
Lee, Jang-Myung (Department of Electrical Engineering, Pusan National University)
Publication Information
Journal of Power Electronics / v.19, no.5, 2019 , pp. 1171-1181 More about this Journal
Abstract
Modular Multilevel Converter (MMC)-based HVDC power transmission using a real-time simulator is one of the key technologies in power electronics research. This paper introduces the design methodology of a physical MMC-HVDC control system based on a Field-Programmable Gate Array (FPGA), which has the advantage of high-speed parallel operation, and validates the accuracy of MMC-HVDC control when operated with a Real-Time Digital Simulator (RTDS). Finally, this paper compares and analyzes the characteristics of capacitor voltage balancing methods such as Nearest Level Control (NLC), NLC with a reduced switching frequency, and tolerance band modulation implemented on physical control system.
Keywords
FPGA; Hardware-in-the-loop simulation; HVDC; Modular-multilevel converter; Real time digital simulator;
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