NDLI: Torque ripple reduction in BLDC motor with 120 degree conduction inverter

Content Provider	IEEE Xplore Digital Library
Author	Baby, B.K. George, S.
Copyright Year	2012
Description	Author affiliation: Electrical Engineering Department, National Institute of Technology Calicut, Kerala India (Baby, B.K.; George, S.)
Abstract	Reduction of torque ripple in Brushless DC motors (BLDC) due to phase current commutation is the main focus of this work. The causes for the development of torque ripple are described in detail with necessary equations. It is found that by injecting additional voltage at the time of commutation, torque ripple can be minimized. From the derived equations for phase currents, the magnitude and duration for which the additional voltage that has to be injected is established. A new topology is proposed to supply additional voltage at the time of commutation and thereby reducing the torque ripple at the time of commutation. It is observed that, with the new topology for the same input power, the percentage torque ripple has reduced from 13.71 to 6.5. Furthermore, the new topology gives the benefit of an increased steady state speed and negligible speed ripple.
Starting Page	1116
Ending Page	1121
File Size	762040
Page Count	6
File Format	PDF
ISBN	9781467322706
e-ISBN	9781467322720
DOI	10.1109/INDCON.2012.6420784
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-12-07
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Torque Brushless DC motors Commutation Windings Torque ripple Switches Permanent magnet motors phase current commutation BLDC motor boosted voltage commutation
Content Type	Text
Resource Type	Article

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