Title :
Effect of ferrite magnetic wedge on capacitor motor characteristics under triac control
Author :
Kaga, Akio ; Tajima, Katsubumi ; Anazawa, Yoshihisa ; Kimura, Makoto
Author_Institution :
Dept. of Electr. & Electron. Eng., Akita Univ., Japan
fDate :
11/1/1993 12:00:00 AM
Abstract :
The running characteristics of the split-phase capacitor motor in which a triac is connected in series with the motor circuit to control the applied voltage in accordance with the load conditions are studied. Ferrite magnetic wedges are inserted into the slot openings on the motor stator. The wedging effect on the motor characteristics is studied. When the ferrite wedges are inserted into the slot openings, the flux density pulsation in the air gap is decreased greatly to decrease the inner power losses, resulting in the improvement of motor efficiency and characteristics
Keywords :
capacitor motors; ferrite applications; machine control; magnetic flux; stators; thyristor applications; voltage control; air gap; capacitor motor characteristics; ferrite magnetic wedge; flux density pulsation; inner power losses; motor efficiency; motor stator; running characteristics; slot openings; split-phase; triac control; wedging effect; Capacitors; Conducting materials; Ferrites; Magnetic flux; Magnetic materials; Stators; Teeth; Testing; Thyristors; Voltage control;
Journal_Title :
Magnetics, IEEE Transactions on
