Design of axial flux permanent magnet brushless dc motor for. The basic benefit comes in from the possibility of grain oriented steel u. New axial flux electric motors pack more ev power in a. The ac induction motor has behavior that does not cut out abruptly at increasing rpm frequency because the slip of the rotor is without. Axial flux motor stator configuration and materials rc. Design and analysis of a new axial flux coreless pmsg with. Smaller magnets were used at the beginning but they were not performing that well. Why arent axial flux motors dc or ac very popular or common. For variable speed job, must have variable frequency drive vfd efficiency higher efficiency than induction motor. Design and development of a highspeed axialflux permanent. Axial flux motor technology ideal topology for hybrid. Use of these materials combined with a new motor design is expected to.
Because of this they are suitable for a range of highperformance drivetrain applications. The difference with traditional directdrive systems radial flux is even more significant. Axial flux induction motor for automotive applications hybrid and electric vehicle technology has seen rapid development in recent years. For 60hz, speed will be 120602p, 2p is pole number of synchronous motor. Design and construction in axial magnetic flux configuration are a new alternative to develop hts motors. Experiences with axialflux induction motor ieee conference. Magnax supports the global cleantech evolution by innovating in nextgeneration axial flux electric motor technology for electric vehicles. Publishers pdf, also known as version of record includes final. The design of the direct drive inwheel motor is shown in fig. This is my design for a encapsulated mini axial flux alternator for tiny wind or water turbines. May 03, 2018 axial flux motors, on the other hand, offer the lowest possible copper loss.
Pdf experiences with axialflux induction motor researchgate. Although the design is intended for wind turbine applications. In this paper, a combination of a modular, axial flux, and torroidal stator winding are applied to a permanentmagnet generator. Select suitable values of flux density in stator back iron and compute stator outer diameter. Copper excitation winding of synchronous motor has a lower loss than induction motors aluminum cage. The 20x10x2mm n52 ones are much better for that purpose. Consequently, the axial gap selfbearing motor agbm was introduced, as shown in figure 2. The axial flux configuration provides high power and torque density making it suitable for evs and hevs. Axial motor using advanced soft magnetic composite materials and grainoriented electrical steel. Magnax yokeless axial flux motors deliver the highest efficiency and extreme power densities for emobility applications. Axial motors we have to calculate the ring surface where the magnets are placed. Study of an axial flux disc motor with superconductor rotor.
Simulation results are encouraging and open the avenue of research work to. Pdf performance comparison of dualrotor radialflux and. Bulent ertan april 2009, 196 pages in this thesis axial flux and radial flux brushless dc motors will be studied as a. Design and testing of a permanent magnet axial flux wind.
The present paper describes the design fabrication of a low cost axial flux induction motor having radial slots. In 9 parviainen, niemela, pyrhonen, and mantere reported. Mar 19, 2015 axial flux induction motor for hybrid and electric cars. Dec 02, 2014 our new axial flux motor for ev conversion, high power and torque 600 nm 200kw 400vdc 6000rpm weight 50kg super performance email. Motor cad induction motor combined electromagnetic and thermal model february 2015 description the motor cad allows the machine performance, losses and temperatures to be calculated for an induction machine.
Condition monitoring of squirrelcage motors by axial. The yasa 750, yasa p400 series and yasa 400 axial flux motors achieve power densities of up to 10kwkg and torque densities which are significantly better than the nearest competitive motor topology. Designed by msftechnologies for electric and hybrid drive. Design optimization of a singlephase axial flux induction motor with low torque ripple abstract. Searched and found for a motor that combines the demand for high torque with small construction diameter, quiet running and low selfheating in the labors of dunkermotoren. The axial flux enables high power densities to be achieved at relatively low speeds 20009000rpm, making the motors ideally suited to hybrid and. The evo permanent magnet axial flux motors are based on proprietary and patented technology that. So there are different ways to fold it or to use it from both side. Also, it can withstand high overloading and have low torque ripple.
An induction motor is based on the principle of induction of voltages and currents. The rotor is a solid sheet rotor, which provides simple construction with mechanical strength and ruggedness at low construction cost. In this paper a new detailed model of motor considering saturation, anisotropy and harmonics is developed. Jun 14, 2017 here you can clearly see the difference in size between a traditional induction motor generator with gearbox and an axial flux motor generator as developed by magnax. This paper presents the design and optimization of a superconductor induction motor in axial flux configuration, using hts bscco2223 tapes. Design and simulation an axial flux permanent magnet motor is different from a conventional electric motor due to the path of magnetic flux inside the motor. A detailed power analysis has not been done yet, but the design is proven to work quite well. First, two motor configurations are analytically designed and compared using finite element calculation. Jan, 2015 this is my design for a encapsulated mini axial flux alternator for tiny wind or water turbines. Although the design is intended for wind turbine applications, this pm machine can be used for many other applications. The bga 22 is strong, quiet and hardly heats up even under total load. The agbm is an electrical combination of an axial flux motor and an axial magnetic bearing, which is. Apr 29, 2019 axial motors we have to calculate the ring surface where the magnets are placed. Axial flux induction motor for hybrid and electric cars youtube.
With the dimensions used for the comparison, the dl ratio was 3. Years ago i made a conversion alternator from a 120v induction motor, rewiring it to produce 2 phases, one from the stator windings and one from the start windings. Axial motor using advanced soft magnetic composite. Here you can clearly see the difference in size between a traditional induction motorgenerator with gearbox and an axial flux motorgenerator as developed by magnax. Control of axial flux dc motor with permanent magnet.
Bldc motor with axial flux principle convinces in small space. Induction machines have high rotor losses which can not be tolerated in reduced. The useful frequency area of the flux coil sensor is from about 0. Energy losses in electric motors can be divided into five major categories. Halbach axial flux motor motored bikes motorized bicycle.
However, solutions proposed for axial flux machines 8, 9, 10 use a mean radius approach, which limits the accuracy of the solution for machines whose relative magnet width or stator coil width is a function of stator radius. For both cases, the developed torque is proportional to the poles pairs. Throughout this study four different types of motors induction motor, permanent magnet radial flux dc motor, permanent magnet axial flux dc motor, switched reluctance motor are considered and compared based on their torque per unit volume and speed performance comparison. The voltage and current is induced in the rotor circuit from the stator circuit for the operation. Design of axialflux permanentmagnet lowspeed machines and performance comparison between radialflux and axialflux machines lappeenranta 2005 153 p. Axial flux induction motor, design and evaluation of steady state. Axial flux motor stator configuration and materials rc groups. With axial flux induction motor afim, the construction of electrical motors that is slimmer than conventional motors become possible, because the stator.
Development of axial flux hts induction motors sciencedirect. Request pdf a survey on axial flux induction motors the induction motor with an axial air gap shows some performance characteristics that are superior to conventional induction machines. The radial and axial view s shows the main points in the thermal model including the winding, stator. Keywords induction motor, axial flux, fem 3d, eccentricity of the rotor. A coreless axial flux pm motor for drive systems with. The other thing to rise the trust is to get as much surface inside the motor volume that is possible. Axial flux motor technology ideal topology for hybrid powertrain integration michael u lamperth, adam c malloy, adrian mlot, mark cordner gkn evo edrive systems ltd, unit 14, woking business park, woking gu21 5jy, u. A comparison of radial and axial flux structures in. In this paper a new detailed model of motor considering.
This paper presents a design algorithm of a dual rotor axial flux induction motor, constructed from two cage rotors and a toroidal wound stator. One very torque dens motor design is a axial flux transversal motor design. Then, the configuration yielding the best performances is integrated and modelled with the whole traction chain under matlabsimulink environment in order. Nov 17, 2016 axial flux induction motor for automotive applications hybrid and electric vehicle technology has seen rapid development in recent years. Axial flux induction motor for hybrid and electric cars. Highly efficient conical air gap axial motor using steel. Equivalent circuit of an induction motor enables the performance characteristics which are evaluated for steady state conditions. This paper deals with the design of high power low dimensions axialflux permanentmagnet motor intended for traction application. Magnax yokeless axial flux motors for electric vehicles. This master thesis deals with the design of an axial. The project builds on regal beloits current highly efficient innovative axial flux brushless permanent magnet motor with a conical air gap and a twohub interior. Ac induction motor project cancelled had i rushed forward into the ac induction motor project without thinking about it very much just buying a bunch of stuff its very likely that i would not have had the freedom to cancel the ac induction motor project because i.
Output voltage is frequency dependent, increasing towards higher frequencies. This control strategy is implanted under the simulation environment matlabsimulink. Axial flux motors as a genre are a very specific set of machines. Evo axial flux electric motors have one of the highest usable power and torque densities of any electric vehicle drive motor available on the market today. Why arent axial flux motors dc or ac very popular or. Lappeenranta university of technology isbn 9522140295, isbn 9522140309 pdf, issn 14564491. In this paper we present a control strategy of a dc motor with permanent magnets ensuring the variation of the speed, the electric braking of electric cars and guaranteeing to reach the maximum speed set at 80 km h. Electrical evaluation and results in geometries of 4, 6, and 8 poles of an ironless stator are.
Design of an axial flux machine for an inwheel motor application. Our af motor axial flux motor if the low torque permanent magnet motor within the etamotors range. Design of an axial flux machine for an inwheel motor. In this tutorial will describe how to model the electromagnetic performance of a. Axial flux motors, on the other hand, offer the lowest possible copper loss. This new generation of directdrive electric machines will. Its disadvantages, however, are low powerdensity, huge size and average eciency. Ionel spark lab, ece department, university of kentucky, lexington, ky, usa narges. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. These machines as a motor or as a generator are more efficient than their radial flux machines siblings.
Design of axial flux permanent magnet brushless dc motor. Design and implementation of axial flux induction motor single stator. Micro sized axial flux 3 phase star or delta wiring. In asynchronous regime, the hts motor exhibits a constant torque, higher than the conventional aluminium one. The induction machine operates between zero speed slip 1 and synchronous speed. Pdf the present paper describes the design fabrication of a low cost axial flux induction motor having radial slots. Design optimization of a singlephase axial flux induction. Beside distinct advantages of single phase axial flux induction motors, they suffer from high torque ripple. Axial flux electric motor 3d cad model library grabcad. In other words, more of the battery power gets turned into useful motor power. Permanentmagnet motor competing with induction motor in ev application has recently been developed. Axial flux induction motor for automotive applications. The motor and generator are at the heart of the vehicle drive and energy system and often utilise expensive rareearth permanent magnet material.
A survey on axial flux induction motors request pdf. Our afmotor axial flux motor if the low torque permanent magnet motor within the etamotors range. Small axial flux alternator 6 coils, 3 phases by kauz. Rahman also reports that the cogging torque was lower for the axial flux design. Permanent magnet axial flux motors allow the axial. Axial flux, modular, permanentmagnet generator with a. The design of the machine was developed with a mathematical mode of axial flux permanent magnet synchronous generator. Axial flux motor stator configuration and materials. For equations of voltages of the axial flux permanent magnet synchronous generator the threephase stator windings have been written as 1 v s 1, abc r s 1, abc. A wind turbine generator must be light to minimize the. The invention relates to an axial flux induction electrical machine comprising a frame, a shaft 1. A coreless axial flux pm motor for drive systems with constant power operation narges taran, vandana rallabandi, dan m. I think of it being in the range of somewhere between a standard axial flux build and a stepper motor.
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