전압형 인버터에 의한 유도형 서보전동기의 전력회생 구동

Abstract

In industrial fields, servo system using ac motor is being required. The purpose of this study is to realize highly functional and highly efficient ac servo system to be applied to the demand in industrial fields. This paper presents that a solutions for an analytical model of three phase induction motor and the formula of regenerative power was derived, based on spiral vector. A speed control system for induction motor, based on the Field Acceleration Method (FAM) is schemed. And also PWM (Pulse Width Modulation) inverter fed induction motor drives is schemed to be easily a regenerative power. The torque is controlled through variations of the slip angular velocity. The stator flux is controlled by using a feedforward control scheme, with the flux reference vector adjusted so as to obtain the fixed exiting current amplitude. The voltage source inverter fed induction motor drives that regenerative power occurs with back current type is presented, to easily controlled the feedback power and to proper the adaption of energy shaving drives. The experimental tests verify the performance of the FAM, proving that good behavior of the drive is achieved in the transient and steady state operating condition. and are discussed to shave the power that regenerative power is measured at the operating acceleration or deceleration of servo system. The analytical model of the induction motor is presented in Section Ⅱ. The formulation of regenerative power and the voltage source inverter fed induction motor drives is presented in Section Ⅲ on based the field acceleration method. A speed control system for induction motor is schemed in Section Ⅳ. Results are given in Section Ⅴ. The proposed speed servo system discussed the effectiveness of voltage source inverter fed induction motor drives and the FAM through an experiment. Section Ⅵ presents the conclusion.