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Stability Improvement of a V/f Controlled Induction Motor Drive System using a Dynamic Current Compensator  

정강률 (순천향대학교 정보기술공학부)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.53, no.6, 2004 , pp. 402-408 More about this Journal
Abstract
This paper proposes the novel V/f control method to improve the stability of a V/f controlled induction motor drive system. The conventional V/f control method used in the proposed V/f control method is a vector-based method that is slightly different from the existing conventional V/f control method. The proposed control method uses a dynamic current compensator to improve the stability of a V/f controlled induction motor drive system. This proposed method is easy to implement and completely eliminates the motor oscillation phenomenon causing the instability of a V/f controlled induction motor drive system, especially when the system is driven near the resonant frequency in steady-state with light load. Additionally, this paper analyzes theoretically the instability of a V/f controlled induction motor drive system and shows the validity of the Proposed V/f control method through simulation and experimental results.
Keywords
V/f 제어;유도전동기 드라이브 시스템;다이나믹 전류보상기;안정도;
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