MMC(Modular Multilevel Converter); HVDC(High Voltage Direct Current); Circulating current control; VPI(Vector PI)
Issue Date
2017-06
Publisher
전력전자학회
Citation
전력전자학회 논문지, v. 22, no. 3, page. 263-269
Abstract
This paper proposes a novel circulating current control method for an MMC-HVDC system based on Vector PI control. The method can suppress second-order harmonics of the circulating currents under balanced and unbalanced grid conditions. The proposed method is robust to grid frequency variation. The effectiveness of the proposed method is verified through frequency response and time domain simulation.