![]() With reporting by Sebastian Schaal, Germany. Research institutes such as the Technical University of Cluj-Napoca, the Universitat Politècnica de Catalunya and the Vrije Universiteit Brussel are part of the MAXIMA project. Among others, Stellantis and Nidec PSA Emotors, the electric drive joint venture of Stellantis and Nidec, are also involved. ![]() The Arts et Métiers Sciences and Technology Campus in Lille, France led the consortium. However, the consortium also states that they will have to “overcome technological and scientific challenges in the electromagnetic, mechanical, and thermal fields” to promote the market integration of this technology. As the number of different components decreases and at the same time the number of remaining components increases, scaling should lead to lower manufacturing costs and easier maintenance, and recycling should also be facilitated.ĭigital twins are also to be used, “to develop optimal control and to test the AFM to its limits”, as the researchers write. The axial flux motors are to be adaptable to different performance requirements by stacking identical rotors and stators. ![]() One of the points with which the costs are to be reduced is a modular design of the drives. With their compact dimensions and high efficiency, they are said to be suitable for mobile applications such as in e-cars. An in-depth analysis of the technology has revealed “great potential for increasing the performance of electric drives”, according to the researchers. Until now, these motors have only been found in expensive sports cars due to their cost, for example in the hybrid system of the LaFerrari Mercedes has taken over the British electric drive system specialist Yasa in 2021 and plans to assemble axial flux motors based on Yasa designs for its upcoming electric high-performance sports cars at the Berlin-Marienfelde plant in the future.Īs part of MAXIMA, eleven research teams and companies from six European countries are now working to make this technology more affordable. The axial flux topology (stator magnetic field flows parallel to the axis of rotation) increases the power density. The radial flux approach is widely used in today’s electric motors, in which the magnetic field of the stator flows radially to the axis of rotation, ensuring high torque. MAXIMA stands for Modular AXIal flux Motor for Automotive. Cheaper AFSMs are to be investigated by 2027.ĪSFMs currently on the market are very efficient, but only cover a niche market due to their high manufacturing costs, according to a statement by the project team. The development of axial flux synchronous machines (AFSM) for the broad automotive market and the associated manufacturing process are the goals of the new EU-funded research project MAXIMA. cabins, cargo trucks, electric vehicles, and even electric planes.BEV Cluj-Napoca Drives Nidec Stellantis University of Brussels Because the axial flux motor has the technical characteristics of compact structure, flat and ultra-thin, small size, light weight and high power density, many developers have made great efforts to improve the technology in the past ten years, so that it is gradually suitable for electric motorcycles, airport cranes, etc. So moving to a completely different motor type might be a good alternative. In the field of automotive electric drives using permanent magnet synchronous motors or induction motors, traditional radial flux motors are being extensively developed for weight and cost optimization, but there is limited room for further improvement in technology. Usually, the design of the new axial flux motor can increase the torque density by more than 30% compared with the design of the traditional radial flux motor. This means that higher torque output can be obtained on the premise of providing the same permanent magnet material and copper wire material. The core technical advantage of the axial flux motor is that the rotating rotor is structurally located on the side of the stator (not inside the stator), and the rotor has a larger diameter size, and torque = force × radius, so it can be under the same force. The air gap is flat, and the magnetic field direction of the air gap is parallel to the direction of the motor axis. ![]() Axial flux motors (also known as "disc motors") have different magnetic flux paths than ordinary radial motors. The development of axial flux synchronous machines (AFSM) for the broad automotive market and the associated manufacturing process are the goals of the new. ![]()
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