Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title The Valve Redundancy Determination for HVDC Converter based on Modular Multilevel Converter
Authors Chan-Ki Kim ; Soon-Ho Choi ; Ji-Won Kang ; Yong-Bum Yoon
DOI 10.6113/TKPE/2016.21.4.328
Page pp.328-334
ISSN 1229-2214
Keywords Reliability; HVDC Valve module redundancy; MMC(Modular Multilevel Converter)
Abstract This paper examines the reliability of a VSC-HVDC valve based on a modular multilevel converter (MMC) HVDC system. The main objective of this paper is to determine the redundancy of the MMC valve. Several prediction methods are introduced, but the binomial failure method is selected to be used. To determine the availability and reliability prediction of MMC valve, which comprises a DC/DC converter, a gate driver, a capacitor, and an IGBT, the failure data of the MMC module are used as the tracking data according to the experimental result. This method uses a simplified equation to find the valve redundancy by transforming the binomial function to De Moivre's formula. This method is the first to be used to find the valve margin.