Title :
Multi-speed control of single-phase induction motors for blower applications
Author :
Julian, Alexander L. ; Wallace, Richard S. ; Sood, Pradeep K.
Author_Institution :
Wisconsin Electr. Mach. and Power Electro. Consortium, Wisconsin Univ., Madison, WI, USA
fDate :
1/1/1995 12:00:00 AM
Abstract :
A simple electronic scheme is studied for multi-speed operation of a permanent split capacitor single phase induction motor used to run fractional horsepower blowers and pumps. Computer simulations predict efficiency, harmonic distortion, and pulsating torque when the motor is fed at 60 Hz, 40 Hz or 30 and by means of a four-triac bridge circuit. Results of simulations and laboratory tests are compared, showing close agreement. This scheme may be a cost effective alternative to tapped-winding or pole-changing motors
Keywords :
bridge circuits; capacitor motors; control system analysis computing; digital simulation; electric machine analysis computing; fractional-horsepower motors; induction motors; machine control; machine testing; machine windings; power convertors; power system harmonics; pumps; thyristor convertors; variable speed gear; velocity control; 30 Hz; 40 Hz; 60 Hz; blower applications; computer simulation; cost effective; efficiency; four-triac bridge power convertor; fractional horsepower; harmonic distortion; laboratory tests; multi-speed operation; permanent split capacitor motor; pole-changing motors; pulsating torque; pumps; single-phase induction motors; tapped-winding motors; Bridge circuits; Capacitors; Circuit simulation; Circuit testing; Computational modeling; Computer simulation; Harmonic distortion; Induction motors; Laboratories; Torque;
Journal_Title :
Power Electronics, IEEE Transactions on
