Test and Simulation of Axial Flux-Motor Characteristics for Hybrid Electric Vehicles

Oh, Sung Chul; Emadi, Ali

doi:10.1109/tvt.2004.827165

Cited by 46 publications

(16 citation statements)

References 1 publication

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“…axial movement to achieve a gap increase of 0.005 in. Oh and Emadi have applied this method at the Illinois Institute of Technology to improve the efficiency and operating range of wheel motors [9].…”

Section: Air-gap Variationmentioning

confidence: 99%

Real Time Flux Control in PM Motors

Otaduy¹

2005

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Section: Air-gap Variationmentioning

confidence: 99%

Real Time Flux Control in PM Motors

Otaduy¹

2005

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“…In order to improve the wide speed range of axial flux PMSM, various special field-weakening methods are proposed and researched [21][22][23][24][25][26][27][28][29][30]. In [21], the rotor pole of the machine adopts a combination of a rare earth magnet (neodymium-iron-bore) and soft laminated iron to reduce the total d-axis reluctance.…”

Section: Introductionmentioning

confidence: 99%

“…Constant power generation is thus achieved with very inexpensive devices. Changing the air gap of the axial flux PM machine by mechanical method is another way to fulfill the field weakening [26][27][28]. Early in 2001, [29] proposed an axial flux PM machine with radially movable PMs to weaken the air gap flux.…”

Section: Introductionmentioning

confidence: 99%

Research on an Axial Flux PMSM with Radially Sliding Permanent Magnets

Zhao

2015

Energies

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Axial flux permanent-magnet synchronous machines (PMSMs) are very suitable candidates for the power train of electric vehicles (EVs) due to high power density and high efficiency. This paper researches an axial flux PMSM with radially sliding permanent magnets (PMs) to fulfill field-weakening control. The field weakening principle and the structure of this kind of axial flux PMSM by mechanical method of sliding PMs are proposed and analyzed. The influences of radially sliding PMs on magnetic flux density distribution, inductance, flux linkage and torque are analyzed and discussed based on 3D finite element method (FEM). The field weakening capabilities by mechanical method and electrical method are compared. The field weakening capability of the machine can be much improved by the optimized combination of the two methods, which is very satisfying for EV drive application. The forces on the PMs are analyzed and calculated. The hysteretic characteristics caused by the friction of the PMs are investigated, which provide useful reference for designing this kind of machine.

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“…In direct variable-speed drives, permanent magnet (PM) machines have become popular due to their typically high power densities and high efficiencies over a wide range of operational speeds. In addition to the intensified interest for conventional radial flux PM (RFPM) machines, axial flux PM (AFPM) machine topologies have also been subject to numerous research studies during the last decade [5][6][7][8]. With an axial flux design, compact multi-stage machines (several rotors and stators) can be realized.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of a Permanent Magnet Machine with Two Contra-rotating Rotors

Ranlöf

Lundin

2009

Electric Power Components and Systems

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Electrical machines with contra-rotating rotors find applications in directdrive energy conversion systems and in ship propulsion systems that employ hydraulic machinery with two contra-rotating stages. In this article, the operating characteristics of permanent magnet machines with two contra-rotating rotors moving on opposite sides of a common stator core are studied via two-dimensional finite element analysis. Particular attention is devoted to the special flux distortion patterns that arise in contra-rotating machine topologies. The study suggests that the introduction of a screening iron core between the rotors provides for negligible flux distortion levels during contra-rotating synchronous operation of the two rotors.

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Test and Simulation of Axial Flux-Motor Characteristics for Hybrid Electric Vehicles

Cited by 46 publications

References 1 publication

Real Time Flux Control in PM Motors

Real Time Flux Control in PM Motors

Research on an Axial Flux PMSM with Radially Sliding Permanent Magnets

Finite Element Analysis of a Permanent Magnet Machine with Two Contra-rotating Rotors

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