A high-torque low-speed multiphase brushless machine-a perspective application for electric vehicles

Simões, Marcelo Godoy; Vieira, P.

doi:10.1109/tie.2002.803241

Cited by 109 publications

(26 citation statements)

References 12 publications

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“…However, the most convincing one for the industry is the capability to provide fault tolerance with no extra hardware. This feature is especially valuable in safety-critical applications such as aerospace or naval drives [4][5][6][7][8][9][10][11][12]. In such cases, the inherent redundancy provided by multiphase systems allows the fault tolerant operation of the drive.…”

Section: Introductionmentioning

confidence: 99%

An Open-phase Fault Detection Method for Six-phase Induction Motor Drives

Rios-Garcia¹,

Durán²,

González-Prieto³

et al. 2017

REPQJ

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Section: Introductionmentioning

confidence: 99%

An Open-phase Fault Detection Method for Six-phase Induction Motor Drives

Rios-Garcia¹,

Durán²,

González-Prieto³

et al. 2017

REPQJ

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show abstract

“…It has a promising prospect in the low-speed and high-torque respects of ships(including submarine) [1], electric locomotives [2], electric vehicle [3], elevators [4], wind power generation [5], tidal power generation [6].…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, the exact analytical method is adopted to analyze and calculate the electromagnetic fields and the Matlab genetic algorithm is employed to optimize the parameters. Radius of the inner rotor yoke R 2 Outer radius of the inner rotor PMs R 3 Inner radius of the slots R 4 Outer radius of the slots R 5 Inner radius of the outer rotor PMs R 6 Inner radius of the outer rotor yoke β…”

Section: Introductionmentioning

confidence: 99%

Optimization Design of Magnetic Gear Based on Genetic Algorithm Toolbox of Matlab

Jing¹,

Luo²,

Liu³

et al. 2016

Journal of Electrical Engineering and Technology

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-Concentric magnetic gear (CMG) is a transmission gear with a novel structure and a promising prospect. However, the calculation of its electromagnetic field is more complicated. In this paper, an exact analytical method is used to calculate the magnetic field distribution and electromagnetic torque. The genetic algorithm optimization toolbox of matlab (GAOT) provides a good tool for its optimization design. The optimization results show that the genetic algorithm is practicable and effective, and provide a new approach for the analysis and design of the concentric magnetic gear. It is significant for the research and application of the concentric magnetic gear.

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“…Multiphase permanent-magnet (PM) machine that features advantages of high power density and high reliability is promising for in-wheel direct-drive systems. [3][4][5][6] Fractional-slot concentrated windings (FSCWs) are widely adopted for fault-tolerant PM synchronous machines (PMSMs). However, FSCW introduces many space harmonics in the air gap, which takes negative effects on machine performance.…”

mentioning

confidence: 99%

A novel five-phase fault-tolerant modular in-wheel permanent-magnet synchronous machine for electric vehicles

Sui

Zheng

et al. 2015

Journal of Applied Physics

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This paper describes a five-phase fault-tolerant modular in-wheel permanent-magnet synchronous machine (PMSM) for electric vehicles. By adopting both the analytical and finite-element methods, the magnetic isolation abilities of some typical slot/pole combinations are analyzed, and a new fractional-slot concentrated winding topology that features hybrid single/double-layer concentrated windings and modular stator structure is developed. For the proposed hybrid single/double-layer concentrated windings, feasible slot/pole combinations are studied for three-, four-, and five-phase PMSMs. A five-phase in-wheel PMSM that adopts the proposed winding topology is designed and compared with the conventional PMSM, and the proposed machine shows advantages of large output torque, zero mutual inductances, low short-circuit current, and high magnetic isolation ability. Some of the analysis results are verified by experiments. V C 2015 AIP Publishing LLC. With the increasing aggravation of energy crisis and air pollution, electric vehicles (EVs) have drawn wide interests in recent years. Owing to the elimination of mechanical gearboxes, in-wheel direct-drive system enables higher system efficiency and better control of EVs. 1,2 Since the in-wheel electric drive system is the only power source for pure EVs, so continuous operation after faults is very important. Multiphase permanent-magnet (PM) machine that features advantages of high power density and high reliability is promising for in-wheel direct-drive systems. [3][4][5][6] Fractional-slot concentrated windings (FSCWs) are widely adopted for fault-tolerant PM synchronous machines (PMSMs). However, FSCW introduces many space harmonics in the air gap, which takes negative effects on machine performance. The impacts of slot/pole combinations on eddycurrent losses of PMs are analyzed, and single-layer FSCW leads to more rotor losses than double-layer FSCW. 7,8 For the double-layer FSCW, its magnetic isolation ability is poorer than that of the single-layer FSCW.Recently, modular-structure machines are increasingly investigated due to their characteristics of increased faulttolerant ability and simplified manufacturing process. 9,10 For multiphase fault-tolerant PM machines, if the phase failure involves only a part of the machine, the fault part can be replaced by a healthy module, which leads to easy maintenance. Three-phase modular PM machine that features single-layer FSCW is reported. 11 Herein, we report a novel five-phase fault-tolerant PMSM, characterized as hybrid single/double-layer windings, modular stator structure, and high magnetic isolation.Five-phase PMSMs with FSCWs have been developed. 12 The investigated machines include a 20-slot/18-pole PMSM with single-layer FSCW, a 20-slot/18-pole PMSM with double-layer FSCW, and a 30-slot/28-pole PMSM with double-layer FSCW, as shown in Fig. 1. The magnetic isolation ability is investigated by finite-element method (FEM). With PMs removed and only one phase winding activated, the flux distributions are calculated by FE...

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A high-torque low-speed multiphase brushless machine-a perspective application for electric vehicles

Cited by 109 publications

References 12 publications

An Open-phase Fault Detection Method for Six-phase Induction Motor Drives

An Open-phase Fault Detection Method for Six-phase Induction Motor Drives

Optimization Design of Magnetic Gear Based on Genetic Algorithm Toolbox of Matlab

A novel five-phase fault-tolerant modular in-wheel permanent-magnet synchronous machine for electric vehicles

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