12/26/2023 0 Comments Axial flux motorPutting a motor on each wheel - or at least one on each axle - could translate into hair-raising EV driving performance. Their smaller size could allow carmakers to put one motor on each wheel, which isn’t feasible with radial motors. The most important aspect of axial motors is form-factor potential, according to Malte Jaensch, professor of sustainable mobile drivetrains at the TUM School of Engineering and Design in Munich. They recognize the importance of having long-term differentiation in these spaces, so they have to bring it in-house.” “The batteries, the motors, this is their core technology now. “If you look at the history of automotive generally, the auto companies have wanted to have the engine, their core technology, in-house,” Woolmer said in an interview. In July of last year, Mercedes announced it had acquired Yasa for an undisclosed sum and would put its motors in AMG models slated to launch starting in 2025. While JLR ended up canceling the project due to financial constraints, Yasa’s motors found their way into the Koenigsegg Regera hybrid hypercar, followed by the Ferrari SF90.Ī charging cable is plugged into a Ferrari SF90 Stradale hybrid sports car during a media preview at the Auto Zurich Car Show in Zurich, Switzerland, on November 3, 2021. Within a few years of earning his doctorate, Jaguar Land Rover made plans to use Yasa’s motors in the C-X75, a hybrid-electric two-seater with enough horsepower to rival the Porsche 918 Spyder, McLaren P1 and Ferrari LaFerrari. Yasa’s motors are the brainchild of Tim Woolmer, whose work on them were the focus of his electrical engineering PhD at the University of Oxford. ![]() Yasa, an Oxford, England-based manufacturer of motors used in Ferrari’s SF90 and 296 GTB plug-in hybrids, uses just a few kilograms of iron for its stators, reducing the mass of the machines by as much as 85 percent. Since the motor generates torque at a bigger diameter, less material is needed. This leads the flow of current - the flux - to travel axially through the machine, rather than radially out from the center. In axial motors, rather than have a rotor spin inside a stator, disc-shaped rotors spin alongside a central stator. ![]() The magnetic force created by a stationary stator surrounding a rotating rotor produces the torque that turns the wheels of the vehicle. When these coils are energized, they become electromagnets with attractive and repulsive forces. With each press of the accelerator, EV drivers push hundreds - and in some cases thousands - of amps of electric current to copper coils. ![]() “It will make use of the small size of the motor.” The power-to-weight ratio is really a record number, and much better than conventional motors, Markus Schaefer, Mercedes’s chief technology officer, said of the automaker’s upcoming AMG electric vehicle platform. An optional rear-seat screen and two of the three front digital dashboard screens are seen in the new all-electric EQS SUV during a tour at the opening of a Mercedes-Benz electric vehicle Battery Factory, marking one of only seven locations producing batteries for their fully electric Mercedes-EQ models, in Woodstock, Alabama, US.
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