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Controller of the Capacitor Commutated Converter for Hvdc transmission
Shinji Tsubota,Tsuyoshi Funaki,Kenji Matsuura 전력전자학회 1998 ICPE(ISPE)논문집 Vol.- No.-
A Capacitor Commutated Converter (CCC) has less difficulty of commutation failure in companson to the conventional line commutated con-vertei This paper pioposes the Aγ'R control of the CCC m the mvertei operation, which deserves as the AγR of the conventional converter The CCC can be operated in high power factor area by using the proposing Aγ'R control The voltage stability at an AC bus connected the CCC inverter is investigated and estimated its ability of preventing the AC voltage collapse. To estimate the voltage stability, this paper developed the simplified converter mathematical model and led the VSF index The lesults shows that the AC voltage stability is guaranteed and enables the interconnection to an weak AC system, when compensation factor of the compensation capacitor is higher than 200%.<br/>