Title :
Investigation of acoustic noise radiated from direct torque controlled induction machines
Author :
Xu, L. ; Zhu, Z.Q. ; Howe, D.
Author_Institution :
Dept. of Electron. & Electr. Eng., Sheffield Univ., UK
Abstract :
The acoustic noise radiated from direct torque controlled (DTC) induction motor drives is investigated and compared with those from space vector PWM (SVPWM) and random PWM (RPWM). It shows that, in contrast to SVPWM, which results in cluster harmonic spectra and tonal acoustic noise, DTC and RPWM system have similar spread spectrum feature, and atonal noise emissions, whilst an optimal flux level exists for minimal noise level
Keywords :
PWM invertors; acoustic emission; acoustic noise; induction motor drives; machine control; switching circuits; torque control; acoustic noise radiation; atonal noise emissions; cluster harmonic spectra; direct torque controlled induction machines; inverter switching; minimal noise level; optimal flux level; random PWM; space vector PWM; spread spectrum feature; tonal acoustic noise; Acoustic noise; Bandwidth; Electric variables control; Hysteresis motors; Induction motors; Space vector pulse width modulation; Stators; Switching frequency; Torque control; Voltage control;
Conference_Titel :
Power Electronics and Motion Control Conference, 2000. Proceedings. IPEMC 2000. The Third International
Conference_Location :
Beijing
Print_ISBN :
7-80003-464-X
DOI :
10.1109/IPEMC.2000.884589
