Title :
Variable speed induction motor with integral ultrasonic PWM inverter
Author :
Gilliam, John E. ; Houldsworth, John A. ; Hadley, Les
Abstract :
A variable-speed motor made by integrating an inverter into the end cowling of a modified induction motor is described. The inverter strategy is PWM, based on a 20 kHz asynchronous carrier and uses FREDFET (fast recovery epitaxial diode FET) power switches. Other characteristics are the addition of a third harmonic for greater output voltage and a novel technique for smooth reversing
Keywords :
induction motors; invertors; pulse width modulation; variable speed gear; 20 kHz; FREDFET; asynchronous carrier; end cowling; fast recovery epitaxial diode FET; harmonic; induction motor; power switches; smooth reversing; ultrasonic PWM inverter; variable speed gear; variable-speed motor; Consumer electronics; Costs; Design engineering; Diodes; Electronics cooling; Induction motors; Power harmonic filters; Pulse width modulation inverters; Switches; Variable speed drives;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1988. APEC '88. Conference Proceedings 1988., Third Annual IEEE
Conference_Location :
New Orleans, LA
DOI :
10.1109/APEC.1988.10555
