Sai Bonthu

Mr. Sai Bonthu


Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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31 March 2021 in Applied Sciences
Verified
Journal Article
Open access
PDF file
MIMd Zakirul Islam
Md Zakirul Islam
SCSeungdeog Choi
Seungdeog Choi
MEMalik E. Elbuluk
Malik E. Elbuluk
SBSai Bonthu
Sai Bonthu
AAAkm Arafat
Akm Arafat
Jeihoon BaekJeihoon Baek
Jeihoon Baek
The rare-earth (RE) permanent magnets (PM) have been increasingly adopted in traction motor application. However, the RE PM is expensive, less abundant, and has cost uncertainties due to limited market suppliers. This paper presents a new design of a RE-free five-phase ferrite permanent magnet-assisted synchronous reluctance motor (Fe-PMaSynRM) with the external rotor architecture with a high saliency ratio. In such architecture, the low magnetic coercivity and demagnetization risk of the ferrite PM is the challenge. This limits the number of flux barriers, saliency ratio, and reluctance torque. A precise analytical design procedure of rotor and stator configuration is presented with differential evolution numerical optimizations by utilizing a lumped parameter model. A 3.7 kW prototype is fabricated to validate the proposed idea.