Starting Torque of Single-Phase Flux-Switching Permanent Magnet Motors

Chen, Y.; Chen, S.; Zhu, Z. Q.; Howe, D.; Ye, Y.Y.

doi:10.1109/tmag.2006.879437

Cited by 63 publications

(17 citation statements)

References 3 publications

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“…Over the last decade many novel and new FSM topologies have been developed for various applications, including automotive [3], home appliance [4], and aerospace [5] applications. FSMs combine the advantages of the high torque density of synchronous machines and the robust rotor structure of switched reluctance motors by placing a PM and/or windings in the stator [6,7].…”

Section: Introductionmentioning

confidence: 99%

A novel wound field flux switching machine with salient pole rotor and nonoverlapping windings

Khan¹,

Sulaiman²,

Ahmad³

2017

Turk J Elec Eng & Comp Sci

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A flux switching machine (FSM) with a segmented rotor and nonoverlapping windings is an attractive alternative for driving high torque density applications. However, a rotor with segments makes the motor less robust as well as difficult to be assembled, while a FSM with salient rotor and overlapping windings inherits high copper losses and less efficiency due to high coil volume. In this paper, a novel structure of FSM with nonoverlapping windings and salient rotor is proposed, making it different from the 10Slot-8Pole segmental and salient rotor FSM. Several design parameters defined in the rotor, armature coil, and field excitation coil are treated by the deterministic optimization approach until the target values are achieved and the performances are analyzed by two-dimensional finite element analysis. The optimized design has achieved average torque of 27.06 Nm and power of 6.83 kW at armature current density, Ja , of 30 A rms /mm 2 and maximum field current density, Je , of 30 A/mm 2 , which is greater than the 10Slot-8Pole segmental rotor and salient rotor FSM. Wound field FSMs with salient rotor and nonoverlapping windings should be considered as promising candidates for hybrid electric vehicles and all-electric boats due to their high torque density, robust rotor, and fewer losses.

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Section: Introductionmentioning

confidence: 99%

A novel wound field flux switching machine with salient pole rotor and nonoverlapping windings

Khan¹,

Sulaiman²,

Ahmad³

2017

Turk J Elec Eng & Comp Sci

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show abstract

“…Switched-Flux Machine (SFM) is a relatively new category of electric motor and over the last decade many novel and new SFM topologies have been developed for various applications, including automotive [1], home appliance [2], and aerospace [3]. High torque density and high efficiency dominated research on SFM by using permanent magnet (PM) for primary excitation.…”

Section: Introductionmentioning

confidence: 99%

Design and Characteristic Investigations of 12Slot-8Pole and 12Slot-10Pole Wound Field Three-Phase Switched-Flux Machines

Khan¹,

Sulaiman²,

Omar³

2014

3rd IET International Conference on Clean Energy and Technology (CEAT) 2014

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In this paper, a new wound field salient rotor (WFSalR) switched-flux machine (SFM) with 12 stator poles and 10 rotor poles is designed, investigated, and compared with the same stator but 8 rotor poles WFSalR SFM. The main advantage of these SFMs when compared with induction machines, direct current (DC) machines etc is that, all the active parts such that armature coil and field excitation coil (FEC) are located on the stator while the rotor part consists of only single piece iron. This makes the machine more robust, simple structure and more suitable to be used for high speed applications. Concentrated windings at the stator reduce the copper consumption and also the copper losses. Initially, the general construction of WFSalR SFMs and design specifications are outlined. Then, finite element analysis (FEA) is used to investigate and compare the flux linkage, induced emf, cogging torque, average torque and torque speed characteristics of proposed WFSalR SFMs.

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“…More recently, research and development on permanent magnet flux switching machine (PMFSM) has become more attractive due to several excellent features of physical compactness, robust rotor structure, higher torque and power density, and high efficiency. Thus, the PMFSM inherits selected advantages of both of the PMSM and SRM [8][9][10][11]. Since, the outer-rotor configuration is more suitable for direct drive application, the PMFSM with outer-rotor has been proposed only for light EV applications [12][13].…”

Section: Introductionmentioning

confidence: 99%

Design improvement of a new outer-rotor hybrid excitation flux switching motor for in-wheel drive EV

Ahmad

Sulaiman

Haron

et al. 2013

2013 IEEE 7th International Power Engineering and Optimization Conference (PEOCO)

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-Research and developments of in-wheel motors applied in pure electric vehicles (EVs) propulsion systems have attracted great attention recently. This is due to their definite advantages of great controllability for each independent wheel as well as the availability of more cabin space due to removal of conventional mechanical transmission and differential gears. Moreover, more series batteries can be installed to increase the driving distance. Since the motors are attached directly to the wheel, the major requirements are to have high torque density and efficiency. As one of alternative candidates with high torque possibility, a new design of outer-rotor hybrid excitation flux switching motor for in-wheel drive EV is proposed in this paper. The proposed motor consists of 12 slots of stator poles, and 10 rotor poles, with all active parts are located on the stator. In addition, it has a robust rotor structure which only comprises a single piece of rotor and has a wide range flux control capabilities. Under some design restrictions and specifications for the target EV drive applications, the performance of the proposed machine on the initial design and improved design are analyzed based on 2-D finite element analysis (FEA). The performance of the improved design motor shows that the maximum torque achieved is 81.5% of the target performance, whereas the maximum power has achieved 143.6 kW which is greater than the target value. Thus, by further design refinement and optimization it is expected that the motor will successfully achieve the target performances.

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Starting Torque of Single-Phase Flux-Switching Permanent Magnet Motors

Cited by 63 publications

References 3 publications

A novel wound field flux switching machine with salient pole rotor and nonoverlapping windings

A novel wound field flux switching machine with salient pole rotor and nonoverlapping windings

Design and Characteristic Investigations of 12Slot-8Pole and 12Slot-10Pole Wound Field Three-Phase Switched-Flux Machines

Design improvement of a new outer-rotor hybrid excitation flux switching motor for in-wheel drive EV

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