A Novel Permanent-Magnet Flux Switching Machine With an Outer-Rotor Configuration for In-Wheel Light Traction Applications

Fei, Weizhong; Luk, P.C.K.; Shen, Jiao; Wang, Yu; Jin, Meng-Jia

doi:10.1109/tia.2012.2210009

Cited by 131 publications

(65 citation statements)

References 33 publications

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“…The stator slot ought to be even multiple of phase numbers. In this manner, the relationship between stator slot number and N s rotor pole number N r is [20] ( 1) where n is a positive whole number which ought not to be multiple of three. In order to achieve zero resultant magnetic force, N r is chosen to be an even number.…”

Section: Geometric Topologymentioning

confidence: 99%

Parametric Optimization and Performance Analysis of Outer Rotor Permanent Magnet Flux Switching Machine for Downhole Application

Kumar¹,

Sulaiman²,

Jenal³

et al. 2017

Journal of Magnetics

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To empower safe, economical and eco-friendly sustainable solution for enhancing oil and gas productivity from deep water reservoirs, new downhole technologies are recommended. Since electric machine plays leading role in the downhole application, it is a squeezing requirement for researchers to design and develop advanced electric machine. The Recent improvement in technology and uses of high-temperature magnets, permanent magnet flux switching machine (PMFSM) has become one of the appropriate contenders for offshore drilling but fewer designed for downhole due to ambient temperature. Therefore this comprehensive study deals with the design optimization and performance analysis of outer rotor PMFSM for the downhole application. Preliminary, the basic design parameters needed for machine design are calculated mathematically. Then the design refinement technique is implemented through deterministic method. Finally, initial and optimized performance of the machine is compared and as a result the output torque is increase from 16.39 Nm to 33.57 Nm while diminishing the cogging torque and PM weight up to 1.77 Nm and 0.79 kg, respectively. Therefore, it is concluded that purposed optimized design is suitable for the downhole application.

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Section: Geometric Topologymentioning

confidence: 99%

Parametric Optimization and Performance Analysis of Outer Rotor Permanent Magnet Flux Switching Machine for Downhole Application

Kumar¹,

Sulaiman²,

Jenal³

et al. 2017

Journal of Magnetics

View full text Add to dashboard Cite

show abstract

“…However, the electromagnetic pole-pairs number of the inner rotor is 10 for high speed, whereas it is 22 for outer rotor to obtain high torque output. 10 k di /k do and B gavei /B gaveo are determined as 0.90 and 0.6T, respectively, and η o is determined as 0.9 by experience. c si and c so are determined as 0.75 and 0.375 as conventional.…”

Section: Validation Of the Power-dimension Equationsmentioning

confidence: 99%

Power distribution of a co-axial dual-mechanical-port flux-switching permanent magnet machine for fuel-based extended range electric vehicles

2017

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In this paper, power distribution between the inner and outer machines of a co-axial dual-mechanical-port flux-switching permanent magnet (CADMP-FSPM) machine is investigated for fuel-based extended range electric vehicle (ER-EV). Firstly, the topology and operation principle of the CADMP-FSPM machine are introduced, which consist of an inner FSPM machine used for high-speed, an outer FSPM machine for low-speed, and a magnetic isolation ring between them. Then, the magnetic field coupling of the inner and outer FSPM machines is analyzed with more attention paid to the optimization of the isolation ring thickness. Thirdly, the power-dimension (PD) equations of the inner and outer FSPM machines are derived, respectively, and thereafter, the PD equation of the whole CADMP-FSPM machine can be given. Finally, the PD equations are validated by finite element analysis, which supplies the guidance on the design of this type of machines. © 2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license

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“…However, local magnetic saturation often occurs in the stator and rotor teeth due to high energy-product rare earth PM, which indicates that PM magnetic energy is wasted to some extent. 18 Consequently, from the perspective of high PM utilization, the flux-switching PM machines are considered to be promising candidates in high-reliability non-rare-earth PM machines. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Demagnetization investigation of a partitioned rotor flux switching machine with hybrid permanent magnet

et al. 2017

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In this paper, the partitioned rotor flux switching permanent magnet machine with ferrite permanent magnet is proposed. By the adoption of the partitioned rotor configuration, the stator flux leakage is eliminated and the permanent magnet utilization is improved. The ferrite permanent magnet machine often suffers from irreversible demagnetization due to the inherent relatively low coercivity of ferrite permanent magnet. To mitigate the machine irreversible demagnetization risk, an improved partitioned rotor flux switching permanent magnet machine with hybrid permanent magnet topology is also proposed. Two little pieces of rare-earth permanent magnet are installed at the corners of ferrite permanent magnet, thus forming the hybrid permanent magnet topology. And the demagnetization mechanisms of both machines are clarified by the magnetic equivalent circuit method, which prove that the rare-earth permanent magnet offer magnetic protection function for the ferrite permanent magnet. Furthermore, by the 2-D finite element analysis, the demagnetization characteristics and the electromagnetic performances of the two machines are quantitively assessed, revealing that the demagnetization risk is reduced significantly. Both theoretical analysis and simulation results verify that the improved machine can not only maintain low-cost design, but also possess enhanced demagnetization withstand capability and competitive electromagnetic performances as expected. © 2017 Author (s)

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A Novel Permanent-Magnet Flux Switching Machine With an Outer-Rotor Configuration for In-Wheel Light Traction Applications

Cited by 131 publications

References 33 publications

Parametric Optimization and Performance Analysis of Outer Rotor Permanent Magnet Flux Switching Machine for Downhole Application

Parametric Optimization and Performance Analysis of Outer Rotor Permanent Magnet Flux Switching Machine for Downhole Application

Power distribution of a co-axial dual-mechanical-port flux-switching permanent magnet machine for fuel-based extended range electric vehicles

Demagnetization investigation of a partitioned rotor flux switching machine with hybrid permanent magnet

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