SCR을 利用한 單相誘導電動機의 Soft Starting에 關한 硏究

A Study On Soft Starting for Single Phase Induction Motor Using SCR

Single-phase induction motors, are in daily use, are needed a Starting current to start them, which they have been sent more than 3-5 times rated current. It is showed a drop in efficiency of field winding-insulations, all of swiths, and distribution wires by the instantaneous starting current; has made a flicker of electric lamps , distortion of T.V screens, close by the motors, so that electrical home equipments get mostly damaged Accordingly, in order to solve such defects, it involved considerations from various angles of SCR theory and experiment. Thus, the investigator made an attempt to figure out approximate quantity between the instantaneous starting-current and the rated current, and to design a circuit of motor which has a restrain contrivance. Here the investigator believes that it will be much helpful to use motors and home electrical equipments, being semi-permanent.