Title :
Magnetic force in three phase induction motor driven by ultrasonic carrier frequency sinusoidal PWM inverter
Author :
Nishimura, Toshi-Hiro ; Inoue, Takeshi ; Nakaoka, Mutsuo ; Mruhashi, Toru
Author_Institution :
Dept. of Electr. Eng., Oita Univ., Japan
Abstract :
A method is described for measuring the magnetic force in a three-phase induction motor driven by a 20 kHz-carrier sinusoidal pulsewidth-modulated (PWM) inverter, and the experimental results are presented. The force is measured by using 36 flux-detecting coils fitted around all the stator teeth. The voltage v(n,t) induced in the coils is sampled with a frequency of 100 kHz. The frequency and mode of the magnetic force are analyzed by a fast Fourier transform approach. The vibration and acoustic noise of a motor driven by a 20 kHz-carrier sinusoidal PWM inverter are examined and compared with those of the motor driven by a conventional inverter.<>
Keywords :
fast Fourier transforms; induction motors; invertors; magnetic variables measurement; pulse width modulation; stators; 100 kHz; 20 kHz; acoustic noise; fast Fourier transform; flux-detecting coils; magnetic force measurement; stator teeth; three phase induction motor; ultrasonic carrier frequency sinusoidal PWM inverter; vibration; Acoustic measurements; Coils; Force measurement; Frequency; Induction motors; Magnetic forces; Pulse inverters; Pulse measurements; Pulse width modulation inverters; Ultrasonic variables measurement;
Conference_Titel :
Power Electronics Specialists Conference, 1988. PESC '88 Record., 19th Annual IEEE
Conference_Location :
Kyoto, Japan
DOI :
10.1109/PESC.1988.18245
