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전동기 과전압 억제용 OUTPUT REACTOR의 최적 설계
김한종(Han-Jong Kim),이근호(Geun-Ho Lee),장철호(Cheol-Ho Jang),이제필(Jea-Pil Lee) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
In this paper, the cost-effective design of output reactor which IS used to suppress the over-voltage at the motor terminal in the Adjustable Speed Drives(ASD) application is proposed In the elevator drive system, the power cable length is relatively shorter than other ASD applications and then the over-voltage at the motor terminal depends on the frequency characteristics of the output reactor at the over-voltage operating frequency The over-voltage suppression mechanism of output reactor m ASD application is analyzed and the dominant parameters of output reactor for the over-voltage suppression are extracted Using these parameters as the design values and considering the high frequency characteristics of Iron core In the reactor, a new cost-effective structure of output reactor is proposed Experimental results of the conventional reactor and the proposed reactor with a 15kW induction motor are given to verify the proposed scheme.