Title :
Comparison of electromagnetic torque ripple in square wave and sine wave permanent magnet motor drives
Author :
Kasyap, A. Krishna ; Balakrishnan, Manu
Author_Institution :
Global R&D Centre, Crompton Greaves Ltd., Mumbai, India
Abstract :
This paper presents the comparison of torque ripple in a permanent magnet motor drive with trapezoidal and sine wave back EMFs, excited by quasi square and sinusoidal currents. The analysis is done for an application where the speed range requirement spans from 10 RPM to 500 RPM. The simulation results show that the permanent magnet motor drive with sinusoidal back EMF excited by a sinusoidal current, which is in phase with the back EMF, gives minimum torque ripple and maximum efficiency.
Keywords :
electric current control; electric potential; motor drives; permanent magnet motors; torque control; electromagnetic torque ripple; sine wave back EMF; sine wave permanent magnet motor drives; sinusoidal back EMF; sinusoidal current; speed range requirement; square wave permanent magnet motor drives; trapezoidal wave back EMF; Commutation; Current control; Harmonic analysis; Permanent magnet motors; Torque; Windings; Back EMF; Brushless DC; Permanent Magnet motor; Sinusoidal control; Trapezoidal control;
Conference_Titel :
Power Electronics, Drives and Energy Systems (PEDES), 2014 IEEE International Conference on
Conference_Location :
Mumbai
Print_ISBN :
978-1-4799-6372-0
DOI :
10.1109/PEDES.2014.7042078
