Multi-stage axial-flux PM machine for wheel direct drive

Caricchi, F.; Crescimbini, Fabio; Mezzetti, F.; Santini, E.

doi:10.1109/ias.1995.530365

Cited by 12 publications

(12 citation statements)

References 1 publication

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“…Several AFPM wheel motors designed for electric cars are compared in [8] and multi-stage AFPM constructed in [9], and concluded that machines of interior PM give the best compromise in terms of power density, efficiency, compactness and long-term overload capability characteristics. Permanent magnet (PM) motor for solar-powered in-wheel motor is demonstrated and examined in [10], where an axial field air gap winding is utilized.…”

Section: Introductionmentioning

confidence: 99%

Transverse flux machines with distributed windings for in-wheel applications

Baserrah

Rixen

Orlik

2009

2009 International Conference on Power Electronics and Drive Systems (PEDS)

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Transverse flux machine (TFM) useful for in-wheel motor applications is presented. This transverse flux permanent magnet motor is designed to achieve high torque-to-weight ratio and is suitable for direct-drive wheel applications. As in conventional TFM, the phases are located under each other, which will increase the axial length of the machine. The idea of this design is to reduce the axial length of TFM, by placing the windings around the stator and by shifting those from each other by electrically 120 o or 90 o , for three-or two-phase machine, respectively. Therefore, a remarkable reduction on the total axial length of the machine will be achieved while keeping the torque density high. This TFM is compared to another similar TFM, in which the three phases have been divided into two halves and placed opposite each other to ensure the mechanical balance and stability of the stator. The corresponding mechanical phase shifts between the phases have accordingly been taken into account. The motors are modelled in finite-element method (FEM) program, Flux3D, and designed to meet the specifications of an optimisation scheme, subject to certain constraints, such as construction dimensions, electric and magnetic loading. Based on this comparison study, many recommendations have been suggested to achieve optimum results.

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Section: Introductionmentioning

confidence: 99%

Transverse flux machines with distributed windings for in-wheel applications

Baserrah

Rixen

Orlik

2009

2009 International Conference on Power Electronics and Drive Systems (PEDS)

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“…Axial flux PM Motor are different because of direction of flux movement with electrical usual machine because in these motors flux move parallel with machine shaft [1,2]. Now days, due to its disc-shaped structure and extremely high compactness the axial-flux permanent-magnet machine (AFPM) topology is particularly suited for wheel direct-drive motor applications [12,13]. The required electric motors in vehicles should have the features like, proper shape, low volume, high torque and power density, high reliability and high efficiency.…”

Section: Introductionmentioning

confidence: 99%

Optimum Design of Slotted Axial Flux Internal Stator Motor Using Genetic Algorithm for Electric Vehicle

Gholamian¹,

Ardebili²,

Abbaszadeh³

et al. 2011

IJSEA

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Axial flux permanent magnet motors having a dual air-gap configuration have been designed and constructed to achieve high power density and used in industries interestingly and specially in the system of driving electrical vehicles. In this paper, the equation related to the design and dimensions of double-sided slotted axial flux synchronous motor with internal stator (TORUS) will be investigated. Then, an optimum design based on genetic algorithm with the purpose of increasing power density is presented. Twodimensional finite-element analysis (FEM) is used to demonstrate these optimization and its results will be presented. Finally, it presents the resultant back emf waveform and current for a 1.0 kW, 48 V, 50 Hz, 4poles/15-slots TORUS slotted axial motor prototype, based on our optimization techniques.

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“…The flux concentration factor is defined by CO = Am (2) Where A,5 and Ag is respectively the magnet and air gap area. The permeance is defined by p YRYA (3) Leakage factor and Carter coefficient [16] are assumed to be p' km1 1 +2 p1 (4) Ac&. = (tan-'( ( ) -i[1 + ( ]} (5) /TTs g 2w8v g Where P011 and P, are magnet leakage and magnet permeance respectively, g is the air gap length, w, is the slot width and r8 is the slot pitch.…”

Section: Introductionmentioning

confidence: 99%