誘導電動機の一次磁束制御法について

概要

論文の詳細を見る
V/f constant controlled induction motor system is widely used in various industrial fields. However, this control has some unfavorable aspects particularly at low speed. To improve these problems, primary flux control is discussed in this paper.In this system, the primary flux of induction motor is controlled to be constant. If primary resistance is estimated exactly, this method can improve transient and torque characteristics excellently as compared with V/f constant control method introduced in the general purpose method inverter.In this paper, the principle of the control method and system configuration are discussed. By detecting primary voltages of induction motor using RC filter, the primary flux is dominated constantly. Since the primary resistance varies extremely by the motor temperature, compensating primary resistance variation automatically is also described.This paper also deals with performance characteristics of induction motor. The experimental results of the tested machine shows that the proposed method can be expected for the high performance general purpose inverter.
社団法人電気学会の論文