Original scientific paper
https://doi.org/10.1080/00051144.2024.2329492
Comparative assessment of a novel 8/18 multi-teeth with conventional 8/10 in-wheel SRM for an E-Scooter
B Sandesh Bhaktha
; Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, India
Gupta Rahul Ramnihor
; Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, India
Monika Sahu
; Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, India
Anil Jogi
; Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, India
Jeyaraj Pitchaimani
; Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, India
*
K.V. Gangadharan
; Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, India
* Corresponding author.
Abstract
Electric scooters are increasingly gaining popularity in India owing to rising global crude oil
prices and rising levels of vehicular pollution. Most of them are currently powered by expensive in-wheel (IW) permanent magnet (PM) brushless DC motors. Owing to their simplicity, and
ruggedness while being cost-effective (since they do not employ PMs), switched reluctance
motors (SRMs) are a viable alternative. Despite these benefits, SRMs possess drawbacks such as
low torque density and inferior efficiency. Recently, a multi-teeth (MT) SRM with an improved
performance was reported. However, the design of MTSRM topologies and their electromagnetic performance have not been explored sufficiently. In this paper, a design formula governing
the selection of the number of MT and rotor poles for MTSRMs has been proposed. Using this, a
novel four-phase 8/18 IW-MTSRM is derived and proposed for an E-scooter. The characteristics of
the proposed SRM are numerically compared with a conventional 8/10 SRM based on magnetic
characteristics, efficiencies and steady-state operation for the complete torque-speed range.
Results indicate that the proposed 8/18 MTSRM has a higher peak torque capacity, torque density, superior drive cycle efficiency and reduced torque ripple. Further, the FEA model is validated
experimentally on a downsized 8/18 MTSRM prototype.
Keywords
Multi-teeth (MT) topology; Electric scooter (E-scooter); performance comparison study; In-wheel switched reluctance motor (IW-SRM); optimization; prototype machine; magnetic saturation
Hrčak ID:
326222
URI
Publication date:
15.3.2024.
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