Multistage axial-flux PM machine for wheel direct drive

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

doi:10.1109/28.511645

Cited by 88 publications

(26 citation statements)

References 1 publication

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“…AFPM machines are increasingly used in various applications due to their high efficiency, compact construction and high torque at low speed [1][2][3]. AFPM unique topologies allow designers to design multi pole machines.…”

Section: Introductionmentioning

confidence: 99%

Developing a 3D-FEM Model for Electromagnetic Analysis of an Axial Flux Permanent Magnet Machine

Mirimani¹,

Vahedi²

2010

JEMAA

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Section: Introductionmentioning

confidence: 99%

Developing a 3D-FEM Model for Electromagnetic Analysis of an Axial Flux Permanent Magnet Machine

Mirimani¹,

Vahedi²

2010

JEMAA

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“…It greatly simplify the mechanical part of the electric vehicle. In last decades, both radial and axial flux permanent magnet (PM) motors are widely used in most of the in-wheel applications [2,3,4]. PM motors offer the highest torque density and therefore will potentially have the lowest weight for given torque and power rating.…”

Section: Introductionmentioning

confidence: 99%

Field-Circuit Coupled Analysis of an In-Wheel Switched Reluctance Motor with Outer Rotor for EV Applications

Chen¹,

Liu²,

Zhao³

et al. 2012

Proceedings of the 2nd International Conference on Electronic and Mechanical Engineering and Information Technology (2012)

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Abstract. Switched reluctance motor (SRM) is potential to be applied in electric vehicle as an in-wheel drive motor because of its unique feature, such as being allowed to operate in a wide speed range with high efficiency. In this paper, a field-circuit coupled dynamic model is developed with 2D finite element method in Maxwell being proposed to compute the performances of a 10kW/800rpm SRM using the angle position control (APC) strategy. The nonlinear magnetization characteristics have been considered and calculated by FEA. The magnetic fields, windings current, the electromagnetic torque and the terminal characteristics of the prototype SRM are investigated. IntroductionIn-wheel motors for electric vehicle (EV) application is a hot topic among researchers due to environmental concerns [1]. It greatly simplify the mechanical part of the electric vehicle. In last decades, both radial and axial flux permanent magnet (PM) motors are widely used in most of the in-wheel applications [2,3,4]. PM motors offer the highest torque density and therefore will potentially have the lowest weight for given torque and power rating. However, fixed flux magnets limit the speed range of the motor, and there are the dangers of demagnetization phenomenon in permanent magnets. The induction and switched reluctance motors, which have similar torque density, have also been used as in-wheel drive motors [5,6].Comparing with other motors, SRM is potential to apply in EV applications on account of its simple and reliable structure. SRM enjoys flexible control, high efficiency in a wide range of speed, and easy implementation of four-quadrant operation, which is much more important for improvement of electric vehicle performance [7].However, due to the double salient structure of the SRM, the non sinusoidal currents and the magnetic saturation in the motor core during motor operation, the simple and unified mathematical model and analytical equation can not be get easily [8]. The finite element method is a kind of discrete mathematics method which is based on the magnetic field analysis, the SRM model can be precisely built by the method, the SRM performance can be comprehensively and systematically analyzed [9].In this paper, a new field-circuit coupled finite element method by using Maxwell is developed to simulate a 3-phase, 12/8 pole, 10kW/800rpm SRM and its control system. The magnetic fields distribution, the torque, the currents of the SRM with outer rotor are presented.

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“…Continuously variable transmissions [3], [4], axial flux machine types [5], [6], or (extreme) field weakening [7]- [9] are the respective main solutions that are currently available to achieve the wide-speed operating range required for traction. Each of these solutions has advantages and disadvantages, but none of them is a sole solution for electrical vehicle propulsion, hence combinations are mandatory.…”

Section: Introductionmentioning

confidence: 99%

Twelve-phase open-winding SPMSM development for speed dependent reconfigurable traction drive

Gerrits

Duarte

Wijnands

et al. 2015

2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER)

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Abstract-Commercially available electrical machines are generally not optimized for a broad operating range, as required in e.g. vehicle traction applications. The required mechanical angular velocity of the wheels for electrical vehicle propulsion is relatively low (around 1,000 rpm), while the torque demand is high (around 500 Nm). This combination requires an adequate solution in the mechanical, electromechanical or electrical domain. No cheap, reliable, lightweight and efficient solution has been invented yet. This paper presents an operation method for a dynamic electric vehicle propulsion system using variable torque/speed characteristics. With this method, the speed range of an electrical machine can be extended. The twelve-phase open-winding surface permanent magnet synchronous machine presented in this paper is developed to verify the different dynamic drive operation modes in practice.

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Multistage axial-flux PM machine for wheel direct drive

Cited by 88 publications

References 1 publication

Developing a 3D-FEM Model for Electromagnetic Analysis of an Axial Flux Permanent Magnet Machine

Developing a 3D-FEM Model for Electromagnetic Analysis of an Axial Flux Permanent Magnet Machine

Field-Circuit Coupled Analysis of an In-Wheel Switched Reluctance Motor with Outer Rotor for EV Applications

Twelve-phase open-winding SPMSM development for speed dependent reconfigurable traction drive

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