Title :
The start control strategy design of Unified Power Quality Conditioner based on modular multilevel converter
Author :
Zhengfu Liu ; Jingjing Lu ; Zhiguang Ou ; Ming Ma ; Chang Yuan ; Xiangning Xiao ; Hao Wang
Author_Institution :
Electr. Power Res. Inst., Guangdong Power Grid Corp., Guangdong, China
Abstract :
This paper proposes a new modular multilevel converter based unified power quality controller (MMC-UPQC). As one of the key technologies of MMC-UPQC, the start strategy is discussed and combined with the establishment of the DC side capacitance voltage. In this paper, the main circuit of MMC-UPQC and the operating states of MMC sub-modules (SMs) are described in detail. Two start control strategies are put forward and compared. The detection and control algorithm of UPQC is based on d-q coordinate transformation method. PSCAD/EMTDC simulation results and prototype experiment results are discussed to support the proposed start control strategies and verify the application of MMC in UPQC.
Keywords :
control system synthesis; power control; power convertors; power supply quality; DC side capacitance voltage; MMC-UPQC; PSCAD-EMTDC simulation; SM; d-q coordinate transformation method; modular multilevel converter; start control strategy design; submodule; unified power quality conditioner; unified power quality controller; Capacitance-voltage characteristics; Capacitors; Power quality; Simulation; Topology; Voltage control; Modular Multi-level Converter (MMC); Start strategy; Unified Power Quality Controller (UPQC); nearest level modulation (NLM);
Conference_Titel :
Electric Machines & Drives Conference (IEMDC), 2013 IEEE International
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-4975-8
Electronic_ISBN :
978-1-4673-4973-4
DOI :
10.1109/IEMDC.2013.6556209
