| Title |
Design of Controller for Reducing In-Rush Current of Single-Phase Induction Motor |
| Authors |
박수강(Park, Su-Kang) ; 백형래(Baek, Hyung-Lae) ; 이상일(Lee, Sang-Il) |
| Keywords |
In-rush current ; Energy saving ; Optimal power saving ; Phase angle control ; Auxiliary winding ; Electronic starting switch |
| Abstract |
During an AC motor's start-up accelerating period, a large amount of current is required to reach to the rating speed. This is called in-rush current. This peak in-rush current can be more than about several times the operating or steady-state current in the full load rating of the motor. In-rush current is present in both and electronic ballasts. The main area of concern is the tripping of circuit breaker and fuses which can affect electrical system components From this, we can see that the electrical power controllers will be rather concerned, since they have to supply the actual current necessary to start the motor. This paper presents a new method to reducing in-rush current and energy saving of the single-phase induction motor used in air-conditioner. It can be obtained that proposed system is low cost and small size as compared with other controller. Experiments are focused on a capacitor starting single-phase induction motor. The optimal power saving and in-rush current limiting by phase angle control are verified by experimental results. Also, auxiliary winding was controlled by electronic starting switch. |