Coupled Electromagnetic-thermal Analysis of Segmented PM Consequent Pole Flux Switching Machine

doi:10.23919/CJEE.2021.000015

Chinese Journal of Electrical Engineering ›› 2021, Vol. 7 ›› Issue (2): 50-60.doi: 10.23919/CJEE.2021.000015

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Coupled Electromagnetic-thermal Analysis of Segmented PM Consequent Pole Flux Switching Machine

Wasiq Ullah^1,*, Faisal Khan¹, Muhammad Umair¹, Erwan Sulaiman²

1. Department of Electrical and Computer Engineering, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan;
2. Department of Electrical Power Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja 86400, Malaysia

Received:2020-07-12 Revised:2020-10-23 Accepted:2020-10-28 Online:2021-06-25 Published:2021-07-08
Contact: * E-mail: wasiqullah014@gmail.com
About author:Wasiq Ullah (Student Member, IEEE) is basically from Afghanistan and was born in District Peshawar, Khyber Pakhtunkhwa, Pakistan in 1995. He received his B.S. and M.S degrees in electrical (power) engineering from COMSATS University Islamabad (Abbottabad Campus), Abbottabad, Pakistan in 2018 and 2020, respectively. He is currently pursuing PhD degree in electrical (power) engineering from COMSATS University Islamabad (Abbottabad Campus), Abbottabad, Pakistan.
From 2018 till now, he is research associates with Electric Machine Design research group. His research interests include analytical modelling, design analysis and optimization of permanent magnet flux switching machines, linear flux switching machines, hybrid excited flux switching machines, and novel consequent pole flux switching machines for high-speed brushless AC applications.
He is a graduate student member IEEE, and member of Pakistan engineering council.
Faisal Khan (Member, IEEE) was born in District Charsadda, Khyber Pakhtunkhwa, Pakistan in 1986. He received his B.S. degree in electronics engineering from COMSATS University Islamabad (Abbottabad Campus), Pakistan in 2009 and M.S. degree in electrical engineering from COMSATS University Islamabad (Abbottabad Campus), Pakistan in 2012. He received the Ph.D. degree in electrical engineering from Universiti Tun Hussein Onn Malaysia, Malaysia in 2017.
From 2010 to 2012, he was a lecturer at University of Engineering & Technology, Abbottabad, Pakistan. Since 2017, he has been assistant professor with the Electrical and Computer Engineering Department, COMSATS University Islamabad (Abbottabad Campus), Pakistan. He is author of more than hundred publications, one patent, and received multiple research awards. His research interests include design and analysis of flux-switching machines, synchronous machines, and DC machines.
He is a member of IEEE-IES Electrical Machines Technical Committee.
Muhammad Umair (Student Member, IEEE) was born in Peshawar, KPK, Pakistan. He received his degree of B.S. and M.S degree in Electrical (Power) Engineering from COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan in 2018 and 2021 respectively. He has been research assistant in machine design group from March 2019 and his research focuses on optimization, design analysis and experimental validation of field excited flux switching machines.
Erwan Sulaiman (Member, IEEE) was born in Johor, Malaysia, on August 31, 1978. He received his B.E and M.E degrees in Electrical Engineering from University of Malaya in 2001 and University Tun Hussein Onn Malaysia (UTHM) in 2004. He has been with UTHM from December 2004 as a lecturer. He received Doctor Degree in Electrical Engineering from Nagoya Institute of Technology (NIT), Japan in 2012. He is currently professor at Department of Electrical Power Engineering, University Tun Hussein Onn Malaysia. His research interests include design optimizations of hybrid excited flux switching machines (HEFSM) and wound field flux switching machines (WFFSM) for electric vehicles (EVs) and hybrid electric vehicles (HEVs) drive applications.

Abstract

Abstract: Compact stator structure of flux switching machines (FSMs) encompassing both permanent magnets (PMs) and armature winding slots (AWS) attract research interest whenever high power and density are the basic requirements. However, it also results in temperature rises owing to heat generation by electromagnetic power losses degrading the electromagnetic performance and affecting machine performance. In this study, a segmented permanent magnet (SPM) consequent pole FSM (SPM-CPFSM) is developed, which provides a stator cooling channel (duct) for improved heat dissipation to avoid demagnetization of PM as well as overheating. Furthermore, this study investigates detailed electromagnetic performance analysis and prediction of temperature variation in various machine parts owing to the heat generated by iron, copper, and magnet eddy current losses utilizing coupled electromagnetic-thermal analysis accounting for magnetic flux density variation. In comparison with the 2D analysis, the developed 3D coupled-field analysis more accurately predicts electromagnetic performance and temperature distribution. Analysis reveals that a cooling duct at the stator significantly assists in stator heat dissipation in the axial direction ensuring a safe operating condition of the PMs as well as machine parts to avoid overheating.

Key words: AC machines, coupled field, consequent pole, permanent magnet, loss analysis, thermal analysis

Wasiq Ullah, Faisal Khan, Muhammad Umair, Erwan Sulaiman. Coupled Electromagnetic-thermal Analysis of Segmented PM Consequent Pole Flux Switching Machine[J]. Chinese Journal of Electrical Engineering, 2021, 7(2): 50-60.

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Coupled Electromagnetic-thermal Analysis of Segmented PM Consequent Pole Flux Switching Machine

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