인버터 구동 유도전동기의 회전자 슬롯형상 최적화

Abstract

본 논문에서는 가변 주파수 구동시의 장, 단점을 고려하여 인버터 유도전동기의 효율향상과 고조파 손실을 저감시키며 정동 토오크 조건을 유지하는 회전자 슬롯형상 최적화 설계방법을 제시 하였다. A simple analysis method for inverter-fed induction motor using F.E.M and equivalent circuit is proposed. And an optimum shape of rotor slot for 2Hp inverter-fed induction motor is determined by combining the proposed analysis method and an optimization algorithm. Conjugate gradient method is used for the optimization algorithm. The optimization is performed for higher efficiency and reduction of harmonic loss in the inverter-fed induction motor. The optimization results are verified by comparing with those of the time-step F.E.A and the experiment.