Based on many years of experience in designing and integrating axial flux motors the engineering team at phipower have developed a range of electric motors from racing to heavy goods. Learn how to design a motor in flux 2d in less than 10 minutes. The brushless, axial flux permanent magnet design is highly tolerant of temperature and centrifugal effects, and the ironless rotor and stator eliminate iron eddy current and hysteresis losses. Axiflux is the creator of the adaptive magnetic flux array amfa, the worlds first modular, realtime, software reconfigurable electric motor and generator. Rahman also reports that the cogging torque was lower for the axial flux design. Relative to a traditional electrical motor, the innovative configuration and control of the amfa yields significant size, weight and price reductions, while increasing power. Pdf software design tool for optimum axial flux bldc motors. Designs and prototypes of fullsize axial flux and radial flux electric tail rotor motors were delivered, including comprehensive test data and supporting analyses. The technology centred on the use of high efficiency and performance permanent magnet brushless machines, requiring innovative use of modern materials and advanced design methods. Because of this they are suitable for a range of highperformance drivetrain applications. The motor and generator are at the heart of the vehicle drive and energy system and often utilise expensive rareearth permanent magnet material. The yasa yokeless and segmented armature motor topology also significantly reduces manufacturing complexity, making the motors ideally suited to. Another example of an axial motor design comes from magnax in belgium.
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. For a highspeed automotive generator, the axial flux reversal machine was proposed. I found that there are plenty software that will do the sizing and magnetic analysis for radial flux machine, but nothing for axial flux machine. Since then the company has grown, changed its name to match that of the product line, and developed the emrax line to five sizes. Design of multi phase inwheel axial flux permanent magnet motor for electric vehicles. Design of axial flux permanent magnet brushless dc motor. Albus tech brushless coreless axialflux electric machines. This short video presents an electric motor basic example. Electric motors energy efficiency is around 90 percent. Axial flux motor developments driven by demands of electric. The other thing to rise the trust is to get as much surface inside the motor volume that is possible.
Theres a premium put on electric motor designs that deliver power. Its axial flux design is based on a proofofconcept originally built at the university of ghent in 2009. Not only do they provide solid motor analysis, but they also communicate well across cultures and nationalities, making them a pleasure to work with. Lightweight highefficiency power train propulsion with axial. A permanent magnet motor was designed in the form of an axial flux inner statornon slot type. Flux is a finite element software used for 2d and 3d electromagnetic and electrotermal analysis.
Motor design ltd mdl offer a wide range of consultancy services dedicated to electric machinery design for industrial companies operating in various application fields. This paper discusses a three phase axial flux outer rotor bldc motor, but the core. Design of axial flux permanent magnet brushless dc motor for. Flux offers a full range of physical models to simulate the low frequency behavior of electromagnetic devices such as electric motors, power transformers, actuators.
With the use of flux fea software, design cost and time can be decreased. Ecms patented technology for axial gap motors eliminates the need for wire winding and iron laminations used in conventional motors by embedding copperetched conductors into a multilayered printed circuit board to form a stator that works in conjunction with permanent magnets. Phipower ag designs and builds high performance axial. With the dimensions used for the comparison, the dl ratio was 3. The very short axial length and high power density of yasa e motors make them a particularly effective solution for p2 type hybrid vehicles and range. Autocad inventor cad software was used by me to design model of the motor. In 9 parviainen, niemela, pyrhonen, and mantere reported. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. The company has accumulated a huge knowhow and experience in axial flux electric machines evolving its potential to become a. The axial flux switchedreluctance motor afsrm topology for inwheel drive vehicle applications is presented. The rotor of the electric machine is located on the same shaft as the controlled unit. Axial flux motor stator configuration and materials rc. Radial flux motors permanent magnet avid technology. Preliminary design for a motor with 16 rotor poles was chosen in order to achieve.
His brushed dc motor design held the magnets stationary with a spinning armature activated by sliding brushes as the rotor. Design and analysis of a new axial flux coreless pmsg with three rotors and double stators. Lightweight, compact, and relatively powerful, the motor was ideal for electric motorcycles. At 5 horsepower per pound, this motor has a higher power density than any other motor on the market. 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. The highspeed af frm electrical machines offer great advantages of reduction in size per unit output and improved efficiency 25, 26, 27.
Download scientific diagram the 3d model of axial flux squirrel cage rotor. Emotors consulting, llc welcome to emotors consulting. Axial flux electric motor 3d cad model library grabcad. Motoranalysispm free software for design and analysis of. However, the magnetic flux is flowing in the axial direction, so a magnetic analysis by a 3d model is required for a precise design. A comparison of radial and axial flux structures in. The authors firstly investigate the applicability of this type of machine as a generator in small and mediumsized wind turbines, then the applicability as an inwheel hub motor for electric vehicles. We have designed slotted and slotless, multiple rotor and multiple stator axial flux disk motors before. Our axial flux design yasa s 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. Innovation in axial flux motor design and manufacturing phipower ag designs and builds high performance axial flux motors offering class leading power and torque density.
Brushless dc motors consist of two type motors, axial flux af and radial flux rf. Yasa limited first for efficient electric powertrain. It enables engineers to easily design their machines from standard, customized and parametric parts, add windings with multilevel assistant and attribute materials to quickly run a selection of tests and compare their performance. Magnax prepares to manufacture radically highpowered. Evans electric axial flux induction motors for electric.
Therefore the designers face a lot of difficulties in designing and optimizing the motor for a given. The design of hev drive unit with an axial flux rotary converter this paper describes an efficient axial flux arrangement of the four quadrant rotary converter for hybrid electric vehicles. Design of axial flux pm disc motors for electric vehicle applications is one of our areas of expertise. The basic benefit comes in from the possibility of grain oriented steel u.
Axial flux motors were studied by british inventor and ev enthusiast cedric lynch as early as 1979. This research aims for an electric motor that is suitable for electric. Axial flux motor developments driven by demands of. Magnax supports the global cleantech evolution by innovating in nextgeneration axial flux electric motor technology for electric vehicles. Engineers who design electric machines need simulation tools that can be employed for quick, accurate product development. The motor drive class for electric vehicle the usage of axial flux a quite compete with radial flux with. Brushless ipm motor design using flux 2d dedicated motor. The theory is then applied to the electric vehicle case to justify the pursuit of an in the wheel motor design. In addition, some of the unconventional axial flux permanent magnet motors designed here at mds motor are. Its first axial flux prototype motor, named emrax, which stands for electric motor roman axial flux, was made in 2008 to power a pioneering electric airplane. Axial flux induction motor for automotive applications hybrid and electric vehicle technology has seen rapid development in recent years. A software interface and simulation results are presented to check the level of optimization achievable with the system. Fluxmotor is a flexible software solution dedicated to the pre design of electric motor. Need help with electric motor design or design software.
Our af motor axial flux motor if the low torque permanent magnet motor within the etamotors range. These motors incorporate a unique stator and rotor design with surface mounted permanent magnets to deliver high power at efficiencies far superior to. Our projects include the design and development of motors and generators for emobility applications such as electric cars and aircraft. Axialflux motors and generators shrink size, weight. Thermal considerations for a high performance electric traction motor mentor infolytica duration. We specialise in the development of axial flux induction. Designed by msftechnologies for electric and hybrid drive. Industrial servomotors design of dc and ac permanent magnet servomotors bldc and blac motors can be performed at mds motor design ltd. Jan 18, 2018 this short video presents an electric motor basic example.
I was getting hung up on the axial vs radial air gap. Yasas revolutionary compact, lightweight and powerful electric motors and controllers enable vehicle hybridization and electrification especially when there is limited powertrain space. This paper presents the design of an electric motor for the direct drive of electric vehicle. The designed generator within this study offers the solution for both inwheel motor generator in electric vehicles and wind power applications. These motors incorporate a unique stator and rotor design with surface mounted permanent magnets to deliver high power at efficiencies far superior to highperforming induction motors. This paper discusses a three phase axial flux outer rotor bldc motor, but the core equations can be easily changed to simulate for any kind of motor with the same software and simulation interface. One of three windings that go into the large diameter axial gap axial flux motor. So there are different ways to fold it or to use it from both side. Today, most electric machines operate with radial flux rf. It enables engineers to easily design their machines from standard. Pdf design of an axialflux interior permanentmagnet. May 21, 2018 axial flux motors were studied by british inventor and ev enthusiast cedric lynch as early as 1979. New axial flux electric motors pack more ev power in a. Nov 17, 2016 axial flux induction motor for automotive applications hybrid and electric vehicle technology has seen rapid development in recent years.
The singular benefits of axial flux geometry are discussed with reference to. Why arent axial flux motors dc or ac very popular or. Our nextgeneration axial flux machines are smaller, lighter and more efficient compared with todays traditional motor generators. Figure 1 provides a comparison of the rf and af technologies 1. Again, this direction is perpendicular to the movement, and again results in a force in the direction of the rotation when combined with the axial airgap field. Magnax offers a new concept, thougha machine that operates with axial flux af. The automotive megatrend of the 21st century is electrification of the automobile. Therefore, this motor is suitable in small and thin size and at high torque. The motors feature a disruptive design approach with fully integrated and redundant electronics, modularity, scalability, and superior drive solution efficiency.
But a new concept from belgium promises to offer 98 percent of energy efficiency. The motor uses a stator disc carrying windings that is sandwiched between two rotor discs carrying magnets. The controlled unit is driven by the induction motor via a gear. The axial flux motors have flux that runs parallel to the output shaft along the axis of the shaft, thus, axial. Preliminary design for a motor with 16 rotor poles was chosen in order to achieve high torque density and stable rotation at low speed. The design of the direct drive inwheel motor is shown in fig. The yasa yokeless and segmented armature motor topology also significantly reduces manufacturing complexity, making the motors ideally suited to automated volume production. Design expertise motor design motor design cad software. Motoranalysispm free software for design and analysis. Designs and prototypes of fullsize axialflux and radialflux electric tail rotor motors were delivered, including comprehensive test data and supporting analyses. A new generation of axial flux ev motors design news.
Join our indepth conference program to learn about topics from new developments in electric motor design to. The axial flux bldc motors are relatively new, specially at higher power ratings over 10 kw. The design of the machine was developed with a mathematical mode of axial flux permanent magnet synchronous generator. 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. There are small air gaps between the stator and two rotors. Design and analysis of a new axial flux coreless pmsg with. Ping umpedac, engineering tower, university of malaya, kuala lumpur, malaysia abstractthe design process of a doublesided slotted torus axial. Simulating electric motors with motorsolve youtube. May 03, 2018 new axial flux electric motors pack more ev power in a smaller package. The evo permanent magnet axial flux motors are based on proprietary and patented technology that. Typically, the electric motors are designed and constructed in order to use the radial flux distribution, where rotor and stator have a small radial air gap between them whereas, axial flux motors are versatile and the winding can be varied by geometric arrangement according to the design specific diameter, making it possible to considerably reduce the total volume occupied by the machine.
I am designing a axial flux interior mkagnet bldc motor pancake. Design of axial flux permanentmagnet lowspeed machines and performance comparison between radial flux and axial flux machines thesis for the degree of doctor of science technology to be presented with due permission for public examination and criticism in the auditorium 82 at lappeenranta university of technology, lappeenranta, finland. Oct 18, 2017 motoranalysispm free software for design and analysis of permanent magnet machines. The eletad electrical tail drivemodelling, simulation and rig prototype. Bruno lequesne, an engineer with a background at general motors, delphi, and eaton in electromagnetic and electromechanical systems, particularly for transportation, decided to offer his vast expertise to facilitate the advancement of electrical technology. Innovative electric motors sport axial designs design world. By contrast, axial flux motors have their active conductors oriented radially away from or towards the shaft. Software design tool for optimum axial flux bldc motors semantic. One of the most strong design areas at mds is axial flux permanent magnet motors. Fluxmotor is a flexible software solution dedicated to the predesign of electric motor. Discussion brushless slotless powder core motor electric motor design and construction. We are looking for an engineer with experience in machine design and simulation.
For direct drive motors there are two basic configurations, radial gap or radial flux, and axial gap flux. Our af motor axial flux motor if the low torque permanent magnet motor within the eta motors range. Axialflux motors and generators shrink size, weight power. While the vast majority of electric motors currently in circulation are radial flux designs, magnax claims the key to the high power density its achieving is the direct drive axial flux design.
Ashwoods axial flux motors are permanent magnet, brushless ac motors that power a range of applications at both low and high volumes in specialist markets. 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. Magnax yokeless axial flux motors for electric vehicles. Motor design ltd is a rare design resource for induction machines. Figure 1 provides a comparison of the rf and af technologies. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Software design tool for optimum axial flux bldc motors. Then i found this site and this simple little graphic, above. These machines as a motor or as a generator are more efficient than their radial flux machines siblings.
In the expanding world of induction motors, especially for electric vehicle traction, mdl get my recommendation. It is from magnax and consists of a yokeless axial flux. Analysis of the yokeless and segmented armature machine. Magnax yokeless axial flux motor promises 98 percent. By employing finite element methods early in the design process, they can accelerate development and achieve higher machine efficiencies using less. Axial flux motors as a genre are a very specific set of machines.
Magnax says the key to the high power density is its motors yokeless af design with two rotors at each side of the machine. Eletad motor design limited motor design cad software. This paper presents the design process of a slotted torus axial flux permanentmagnet motor suitable for direct drive of an electric vehicle through sizing equation and finite element analysis. Axial motors we have to calculate the ring surface where the magnets are placed. Axiflux is the creator of the adaptive magnetic flux array amfa, the worlds first modular, realtime, softwarereconfigurable electric motor and generator. The topology is based around a series of magnetically separated segments that form the stator of the machine.