Potentials of Brushless Stator-Mounted Machines in Electric Vehicle Drives—A Literature Review

Brushless stator-mounted traction motors, which are new and emerging, have many potential applications in the electrified transport industry. Brushless stator-mounted machines (BSSMs), with the so-called flux modulation (FM) effects, use asynchronous field harmonics to realize energy conversion by a...

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Main Authors: Hillary C. Idoko, Udochukwu B. Akuru, Rong-Jie Wang, Olawale Popoola
Format: Article
Language:English
Published: MDPI AG 2022-05-01
Series:World Electric Vehicle Journal
Subjects:
Online Access:https://www.mdpi.com/2032-6653/13/5/93
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author Hillary C. Idoko
Udochukwu B. Akuru
Rong-Jie Wang
Olawale Popoola
author_facet Hillary C. Idoko
Udochukwu B. Akuru
Rong-Jie Wang
Olawale Popoola
author_sort Hillary C. Idoko
collection DOAJ
description Brushless stator-mounted traction motors, which are new and emerging, have many potential applications in the electrified transport industry. Brushless stator-mounted machines (BSSMs), with the so-called flux modulation (FM) effects, use asynchronous field harmonics to realize energy conversion by altering the basic principle for conventional machine design which requires the stator and rotor to have the same pole number. The machines show promise of meeting the challenging requirements of electric vehicle (EV) traction motors. Therefore, in this paper, a review is undertaken on the state-of-the-art and potentials of the BSSMs for EV drives. The focus on BSSMs is due to their suitability for high-speed high torque density performance, as well as possessing suitable heat dissipation and flux weakening capabilities. The study is used to first rehash and discuss the design and excitation topologies, operating principles, and some emerging trends based on the basic BSSM variants, e.g., the doubly salient machine, flux reversal machine, and flux switching machine, while also undertaking a bibliometric synthesis on relevant studies highlighting the design and performance candidature of these niche BSSMs in EV applications, especially when compared to the well-developed Prius–IPM motor.
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spelling doaj.art-df2f89ec4c4e41939a20350fc5137e2b2023-11-23T13:36:32ZengMDPI AGWorld Electric Vehicle Journal2032-66532022-05-011359310.3390/wevj13050093Potentials of Brushless Stator-Mounted Machines in Electric Vehicle Drives—A Literature ReviewHillary C. Idoko0Udochukwu B. Akuru1Rong-Jie Wang2Olawale Popoola3Department of Electrical Engineering, Tshwane University of Technology, Pretoria 0183, South AfricaDepartment of Electrical Engineering, Tshwane University of Technology, Pretoria 0183, South AfricaDepartment of Electrical and Electronic Engineering, Stellenbosch University, Stellenbosch 7600, South AfricaDepartment of Electrical Engineering, Tshwane University of Technology, Pretoria 0183, South AfricaBrushless stator-mounted traction motors, which are new and emerging, have many potential applications in the electrified transport industry. Brushless stator-mounted machines (BSSMs), with the so-called flux modulation (FM) effects, use asynchronous field harmonics to realize energy conversion by altering the basic principle for conventional machine design which requires the stator and rotor to have the same pole number. The machines show promise of meeting the challenging requirements of electric vehicle (EV) traction motors. Therefore, in this paper, a review is undertaken on the state-of-the-art and potentials of the BSSMs for EV drives. The focus on BSSMs is due to their suitability for high-speed high torque density performance, as well as possessing suitable heat dissipation and flux weakening capabilities. The study is used to first rehash and discuss the design and excitation topologies, operating principles, and some emerging trends based on the basic BSSM variants, e.g., the doubly salient machine, flux reversal machine, and flux switching machine, while also undertaking a bibliometric synthesis on relevant studies highlighting the design and performance candidature of these niche BSSMs in EV applications, especially when compared to the well-developed Prius–IPM motor.https://www.mdpi.com/2032-6653/13/5/93doubly salient machineelectric vehicleflux reversal machineflux switching machineflux weakeninghybrid-excited
spellingShingle Hillary C. Idoko
Udochukwu B. Akuru
Rong-Jie Wang
Olawale Popoola
Potentials of Brushless Stator-Mounted Machines in Electric Vehicle Drives—A Literature Review
World Electric Vehicle Journal
doubly salient machine
electric vehicle
flux reversal machine
flux switching machine
flux weakening
hybrid-excited
title Potentials of Brushless Stator-Mounted Machines in Electric Vehicle Drives—A Literature Review
title_full Potentials of Brushless Stator-Mounted Machines in Electric Vehicle Drives—A Literature Review
title_fullStr Potentials of Brushless Stator-Mounted Machines in Electric Vehicle Drives—A Literature Review
title_full_unstemmed Potentials of Brushless Stator-Mounted Machines in Electric Vehicle Drives—A Literature Review
title_short Potentials of Brushless Stator-Mounted Machines in Electric Vehicle Drives—A Literature Review
title_sort potentials of brushless stator mounted machines in electric vehicle drives a literature review
topic doubly salient machine
electric vehicle
flux reversal machine
flux switching machine
flux weakening
hybrid-excited
url https://www.mdpi.com/2032-6653/13/5/93
work_keys_str_mv AT hillarycidoko potentialsofbrushlessstatormountedmachinesinelectricvehicledrivesaliteraturereview
AT udochukwubakuru potentialsofbrushlessstatormountedmachinesinelectricvehicledrivesaliteraturereview
AT rongjiewang potentialsofbrushlessstatormountedmachinesinelectricvehicledrivesaliteraturereview
AT olawalepopoola potentialsofbrushlessstatormountedmachinesinelectricvehicledrivesaliteraturereview