Improvement in Efficiency of CSI fed Induction Motor by Means of Flux Control

전류형 인버어터로 작동되는 유도전동기의 자동제어에 의한 효율게선에 관한 연구

When an induction motor is lightly loaded, the efficiency can be very substantially improved by controlling the air gap flux. Thus in the system which requires constant speed under either normal load or light load, it is possible to save energy by means of controlling the air gap flux. In this paper, the required relationships between stator current and rotor slip frequency for optimal efficiency control is derived and the improved control loop is suggested.