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Effect of phase advance on the brushless dc motor torque speed respond

Brushless direct current (BLDC) motor is widely used in small and medium sized electric vehicles as it exhibit highest specific power and thermal efficiency as compared to the induction motor. Permanent magnets BLDC rotor create a constant magnetic flux, which limit the motor top speed. As the back...

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Main Authors: Mohd, M.S., Karsiti, M.N.
Format: Conference or Workshop Item
Published: Institute of Physics Publishing 2015
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960172181&doi=10.1088%2f1757-899X%2f100%2f1%2f012004&partnerID=40&md5=2630e73a57015da5265a11122d7b6936
http://eprints.utp.edu.my/26144/
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spelling my.utp.eprints.261442021-08-30T08:53:13Z Effect of phase advance on the brushless dc motor torque speed respond Mohd, M.S. Karsiti, M.N. Mohd, M.S. Brushless direct current (BLDC) motor is widely used in small and medium sized electric vehicles as it exhibit highest specific power and thermal efficiency as compared to the induction motor. Permanent magnets BLDC rotor create a constant magnetic flux, which limit the motor top speed. As the back electromotive force (EMF) voltage increases proportionally with motor rotational speed and it approaches the amplitude of the input voltage, the phase current amplitude will reach zero. By advancing the phase current, it is possible to extend the maximum speed of the BLDC motor beyond the rated top speed. This will allow smaller BLDC motor to be used in small electric vehicles (EV) and in larger applications will allow the use of BLDC motor without the use of multispeed transmission unit for high speed operation. However, increasing the speed of BLDC will affect the torque speed response. The torque output will decrease as speed increases. Adjusting the phase angle will affect the speed of the motor as each coil is energized earlier than the corresponding rise in the back emf of the coil. This paper discusses the phase advance strategy of Brushless DC motor by phase angle manipulation approaches using external hall sensors. Tests have been performed at different phase advance angles in advance and retard positions for different voltage levels applied. The objective is to create the external hall sensor system to commutate the BLDC motor, to establish the phase advance of the BLDC by varying the phase angle through external hall sensor manipulation, observe the respond of the motor while applying the phase advance by hall sensor adjustment. Institute of Physics Publishing 2015 Conference or Workshop Item NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960172181&doi=10.1088%2f1757-899X%2f100%2f1%2f012004&partnerID=40&md5=2630e73a57015da5265a11122d7b6936 Mohd, M.S. and Karsiti, M.N. and Mohd, M.S. (2015) Effect of phase advance on the brushless dc motor torque speed respond. In: UNSPECIFIED. http://eprints.utp.edu.my/26144/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description Brushless direct current (BLDC) motor is widely used in small and medium sized electric vehicles as it exhibit highest specific power and thermal efficiency as compared to the induction motor. Permanent magnets BLDC rotor create a constant magnetic flux, which limit the motor top speed. As the back electromotive force (EMF) voltage increases proportionally with motor rotational speed and it approaches the amplitude of the input voltage, the phase current amplitude will reach zero. By advancing the phase current, it is possible to extend the maximum speed of the BLDC motor beyond the rated top speed. This will allow smaller BLDC motor to be used in small electric vehicles (EV) and in larger applications will allow the use of BLDC motor without the use of multispeed transmission unit for high speed operation. However, increasing the speed of BLDC will affect the torque speed response. The torque output will decrease as speed increases. Adjusting the phase angle will affect the speed of the motor as each coil is energized earlier than the corresponding rise in the back emf of the coil. This paper discusses the phase advance strategy of Brushless DC motor by phase angle manipulation approaches using external hall sensors. Tests have been performed at different phase advance angles in advance and retard positions for different voltage levels applied. The objective is to create the external hall sensor system to commutate the BLDC motor, to establish the phase advance of the BLDC by varying the phase angle through external hall sensor manipulation, observe the respond of the motor while applying the phase advance by hall sensor adjustment.
format Conference or Workshop Item
author Mohd, M.S.
Karsiti, M.N.
Mohd, M.S.
spellingShingle Mohd, M.S.
Karsiti, M.N.
Mohd, M.S.
Effect of phase advance on the brushless dc motor torque speed respond
author_facet Mohd, M.S.
Karsiti, M.N.
Mohd, M.S.
author_sort Mohd, M.S.
title Effect of phase advance on the brushless dc motor torque speed respond
title_short Effect of phase advance on the brushless dc motor torque speed respond
title_full Effect of phase advance on the brushless dc motor torque speed respond
title_fullStr Effect of phase advance on the brushless dc motor torque speed respond
title_full_unstemmed Effect of phase advance on the brushless dc motor torque speed respond
title_sort effect of phase advance on the brushless dc motor torque speed respond
publisher Institute of Physics Publishing
publishDate 2015
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960172181&doi=10.1088%2f1757-899X%2f100%2f1%2f012004&partnerID=40&md5=2630e73a57015da5265a11122d7b6936
http://eprints.utp.edu.my/26144/
_version_ 1738656830053154816
score 13.211869

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