The very short axial length and high power density of yasa emotors make them a particularly effective solution for p2 type hybrid vehicles and range. The yasa motor has no stator yoke, a high fill factor and short end windings which all increase torque density and efficiency of the machine. Design of hts axial flux motor for aircraft propulsion. Design of a novel modular axialflux double rotor switched. Make free energy generator 220v with 5kw alternator and motor flywheel free electricity generator. Design and testing of a permanent magnet axial flux wind. An axial flux generator is configured so that the magnet flux runs parallel to the rotor shaft. Axial flux induction motor, design and evaluation of steady state modeling using equivalent circuit. Magnax enables industrial innovation with axial flux motor and generator technology that outperforms in efficiency, weight.
They are being increasingly used in consumer electronics, public life, instrumentation and automation system, clinical engineering, industrial. Our af motor axial flux motor if the low torque permanent magnet motor within the eta motors range. In 8, rahman conducted a three way comparison between radial flux, axial flux and transverse flux motors for an in wheel motor application for an electric vehicle. This paper provides a method to define the thermal design of magnet free axialflux switch reluctance motor afsrm that is more suitable for automotive applications by using analytical lumpedparameter thermal network. Most usual axialflux electric machines are dc commutator motors, brushless. The design of the direct drive inwheel motor is shown in fig. Axial flux permanent magnet afpm brushless machines are modern electrical. Albus tech brushless coreless axialflux electric machines. Design and development of a highspeed axialflux permanentmagnet machine citation for published version apa. The first step is to glue the radial or in case of an axial motor the axial magnets in place, and as a 2nd step glue the tangential magnets in place. Pdf thermal design of a magnetfree axialflux switch. New axial flux electric motors pack more ev power in a. Thus, the topology is highly suited for high performance applications. Afim like a typical squirrel cage induction motor, the afim eliminates the need for rareearth permanent magnets entirely, yet matches the ipmsm for torque density and energy.
Hewdesign, analysis, and prototyping of an axial flux permanent magnet motor based on genetic algorithm and. Small axial flux alternator 6 coils, 3 phases by kauz. Magnax yokeless axial flux motors deliver the highest efficiency and extreme power densities for emobility applications. The stator has either distributed winding or salient phase pole windings associated with at least some of the poles with. A new methacrylic acid free structural acrylic adhesive which would not corrode sensitive components when inside a sealed motor. In this paper, a new design of fully coreless multistator multirotor. This is our way of contributing to a sound environment for our children. An axial flux permanent magnet afpm generator is known to be a good candidate for both low and highspeed application. Yasa limited first for efficient electric powertrain. Axial flux motor university of california, san diego. A wide variety of axial flux permanent magnet motor options are available to you, such as wind power generator. Which makes this axial flux, direct drive motor from belgian company magnax a real eyebrowraiser. Axial flux motors were studied by british inventor and ev enthusiast cedric lynch as early as 1979.
Based on these equations radial and axial flux motors with different number of. Save this book to read afm 240 axial flux motor home gkn driveline pdf ebook at our online library. Analysis of the yokeless and segmented armature machine. In analyzing the two design types, an axial flux pmg was chosen as our final design choice for reasons of simplicity, ease of manufacturing and cost of materials. Permanentmagnet machines generally can be axialflux or radial flux 11. In an effort to improve the torque density of automotive induction motors evans electric have developed a double stator, copper rotor, axial flux induction motor. Permanentmagnet synchronous motor, axialflux pmsm, radialflux pmsm. Pdf axial flux induction motor, design and evaluation of. Axial flux permanent magnet afpm brushless machines are modern electrical machines with a lot of advantages over their conventional counterparts. Our afmotor axial flux motor if the low torque permanent magnet motor within the etamotors range. Why arent axial flux motors dc or ac very popular or. A detailed power analysis has not been done yet, but the design is proven to work quite well. This is my design for a encapsulated mini axial flux alternator for tiny wind or water turbines. Us20049512a1 axial flux permanent magnet synchronous.
A motor was built for the 2012 competition by fredrik v. The basic benefit comes in from the possibility of grain oriented steel u. The axial flux alternator sometimes called a generator, is the heart to many diy wind turbine projects. Design and analysis of a new axial flux coreless pmsg with three rotors and double stators. In 9 parviainen, niemela, pyrhonen, and mantere reported. China axial flux permanent magnet motor, china axial flux. Get afm 240 axial flux motor home gkn driveline pdf file for free from our online library. Axial flux motor technology ideal topology for hybrid. Axial flux, modular, permanentmagnet generator with a. Ping umpedac, engineering tower, university of malaya, kuala lumpur, malaysia abstractthe design process of a doublesided slotted torus axial. Pdf design and analysis of axial flux permanent magnet motor. Withstand high temperatures, quick cure speeds for high speed electric motors.
Design and analysis of axial flux permanent magnet motor with variable windings. The present embodiments provide an axial flux permanent magnet synchronous generator or motor. A plurality of poles extend between and are secured to the supports. The permanent magnet used is ndfeb or ferrite magnet with flux guide to focus flux density in the air gap. The top supplying country or region is china, which supply 100% of. Lappeenranta university of technology isbn 9522140295, isbn 9522140309 pdf, issn 14564491. Lower noload or free spinning losses, higher range and maximum. With the dimensions used for the comparison, the dl ratio was 3. The stator is commonly referred to as an air core stator because it contains no steel to cause the cogging effect.
Design and analysis of a new axial flux coreless pmsg with. I did that 2 weeks ago for my 2nd slotless outrunner. Often it is preferable to use a 3d model for torque evaluation of an axial flux motor. Instead of wrapping the coils around a steel core to direct the flux, the axial flux coils are encased in resin and the subsequent. Each generator can be expanded to two or more unit modules. A novel approach to the design of axialflux switched. Axial flux motors as a genre are a very specific set of machines. International journal of electrical components and energy conversion. In 2011 lubna nasrin designed an optimized inwheel axial flux motor for the competition shell eco.
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. The absence of a yoke and the low amount of iron results in very low iron losses. Pdf direct drive hub motors drive a wheel directly without a transmission by incorporating the motor into the hub of wheel. Electrical machines are usually composed of one stator and one rotor. The yasa yokeless and segmented armature motor topology also significantly reduces manufacturing complexity, making the motors ideally suited to.
In other words, more of the battery power gets turned into useful motor power. Pdf design of axialflux motor for traction application. Eaxle designs with integrated yokeless axial flux motors are extremely compact due to the short axial length and the high power density up to 4 times more than radial flux pm motors. Software design tool for optimum axial flux bldc motors. Control of axial flux dc motor with permanent magnet dedicated to electric traction. In general an axial flux machine with a small dl is not viable. The motor is comprised, at its most basic level, of 3 parts. Magnax yokeless axial flux motors for electric vehicles. Especially in multimotor drive train configurations, the freespinning or. Magnax supports the global cleantech evolution by innovating in nextgeneration axial flux electric motor technology for electric vehicles. These machines as a motor or as a generator are more efficient than their radial flux machines siblings. We designed a superconducting motor based on an axial flux configuration and composed of six ybco plates magnetized by a superconducting. Smaller magnets were used at the beginning but they were not performing that well.
Design of axial flux permanentmagnet lowspeed machines and performance comparison between radial flux and axial flux machines lappeenranta 2005 153 p. Axial flux permanent magnet brushless machines jacek f. In this thesis axial flux and radial flux brushless dc motors will be studied as a drive motor for the control of moment gyroscope wheel. Design of axial flux permanent magnet brushless dc motor.
Abstractthis paper presents a new type of axial flux motor, the yokeless and segmented armature yasa topology. Does not require a heat cure so helps maintain a better level of magnetism. Rahman also reports that the cogging torque was lower for the axial flux design. Design of axialflux permanentmagnet lowspeed machines and performance comparison between radialflux and axialflux machines lappeenranta 2005 153 p. The generator may be used for wind turbine generators for reducing the cogging torque generated in the permanent magnet synchronous generators, and thereby achieving improved efficiency of power generation and higher output voltage over conventional coreless statoraxial flux permanent magnet. A high pole count axial flux motor allows for extremely efficient use of energy and a very powerful electromagnet motor. Typically the electric motors are designed and constructed in order to use the radial flux. Yasas proprietary axial flux motors are smaller and lighter than any other motors in their class due to our more efficient use of key magnetic and structural materials. A new generation of axial flux ev motors design news.
The magnax yokeless axial flux machine introduces a new generation of electric. There are 242 axial flux permanent magnet motor suppliers, mainly located in asia. A comparison of radial and axial flux structures in electrical. Magnax prepares to manufacture radically highpowered. This is common on smaller axial flux alternators, but as they get larger, it is often more practical to use rectangular magnets, which are available in larger sizes, and the wire coils are more compact. Its called an axial flux motor because the magnetic fields line are oriented in the direction of the axis of rotation unlike a regular stepper motor where the magnetic fields. Pdf software design tool for optimum axial flux bldc. Lightweight, compact, and relatively powerful, the motor was ideal for electric motorcycles.
The rotor houses the specifically spaced, alternating pole, magnet. Yasas revolutionary compact, lightweight and powerful electric motors and controllers enable vehicle hybridization and electrification especially when there is limited powertrain space. An open stator axial flux asynchronous induction electric motor has an open stator having two spaced insulating supports with a slot extending from a periphery of each of the supports to an inner location. Design and development of a highspeed axialflux permanentmagnet machine. Pdf design of hts axial flux motor for aircraft propulsion. Development of high efficiency axial flux motor for shell eco. In small machines, to obtain enough free space between. 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.
Axial flux motors, on the other hand, offer the lowest possible copper loss. Proto g shared on youtube 3d printed axial flux stepper motor. A comparison of radial and axial flux structures in. It is important that the rotors be made of steel or iron, so that the magnetic flux is conducted by them. His brushed dc motor design held the magnets stationary with a spinning armature activated by sliding brushes as the rotor. A modular permanentmagnet generator with axial flux direction was chosen. Each unit module of the generator may consist of one, two, or more phases. The 20x10x2mm n52 ones are much better for that purpose. Designed by msftechnologies for electric and hybrid drive.
The axial flux motor from his tests later went into production in the emrax motor line with four different size motors available. Control of axial flux dc motor with permanent magnet. The machine has been built modularly with stator and rotor poles made with smc parts. Since then, a british company, yasa, has begun production of axial flux motors aimed at the ev market. Pdf on apr 8, 2016, yew chuan chong and others published thermal design of a magnetfree axialflux switch reluctance motor for.
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