A Study on the Energy Saving SPIM Using Variable Phase Angle Control

가변 위상각제어에 의한 에너지절감형 단상유도전동기에 관한 연구

This paper describes a simple but effective method for energy saving of ac motors having a widely variable load. The proposed method is based on an optimal efficiency control which is operated by voltage-current pattern such as to maintain the maximum efficiency on the efficiency-output characteristics of the motor, in voltage control with triac. In this paper, authors present the experimental results of the SPIM under controlling of current of main and auxiliary winding by using a one chip microcontroller. Experiments are focused on a capacitor stating single phase induction motor the optimal energy saving are proved by the proposed method.