12/12/2023 0 Comments Axial flux motor manufacturers![]() ![]() It all comes down to the greater radius of an axial machine. We’ll get to the other incredible benefits of this reduced mass later.Įlectric vehicles are already known for their massive torque figures, but axial flux motors are about to kick things up a notch. A YASA motor can provide up to 480 hp, all while being a fraction of the weight. As a result, axial flux motors have two to three times the power density of radial flux motors. One of the biggest innovations of axial flux motors is that they remove the need for a yoke, which reduces the stator iron mass by 80 percent. That puts us in a really unique position for all sorts of things.Īlthough coy about his future plans, Woolmer is certainly one to watch in the EV and electric motor space.When it comes to motor design, a traditional radial flux motor contains a rather heavy support component known as a stator yoke. We will have a very high, high-power, low-density and lightweight engine so we can explore sport performance coupled with high levels of industrialization. That’s a space where Mercedes are world-class in terms of their industrialization, so that’s the kind of the idea behind the partnership. But the key thing is, if you watch how technologies filter down in automotive, they start in the luxury sector, like the Ferraris of this world, and then filter down into the mainstream sector and then go into higher volumes after that. ![]() We’re going to utilize Mercedes’ industrialization powerhouse. We are basically a fully owned subsidiary. ![]() You’ve done this with deal with Mercedes - what’s next? So if you double your diameter, you get double the torque for the same amount of materials. So, essentially torque is force times diameter, so for the same force, you get more torque. There’s a benefit because the rotors are rotating at a bigger diameter. It takes what is a light topology in axial flux and makes it even lighter, about half as much again. In the 2000s, axial-flux motors were not very common, but by combining axial-flux technology and making a couple of little tweaks using some new materials, I basically stumbled into this new design, which we call YASA: Yokeless And Segmented Armature. Something that was lighter, more efficient, mass producible in volume. And the idea was to say, what could be created for the electric car industry in 10 or 15 years from now that they would need, that we could meet. We started with a blank sheet of paper at the beginning of my Ph.D. What was different about the engine you came up with? What is so exciting for us is we get to innovate fast, and that’s where the partnership with Mercedes is really interesting. There’s nothing more exciting for an engineer than a period of revolution because the speed of innovation is what’s important. We’re now 10 years into a 20-year revolution, every new car that gets sold in 10 years will be electric, no question. TW: We started just over 12 years ago with really one remit: Let’s accelerate electric cars, let’s do anything we can to make electric cars happen faster. I caught up with him to find out what’s next. Tim Woolmer, YASA’s founder and CTO, invented this very new approach to electric motor design. This makes them one-third the weight of other electric motors, more efficient and with 3x higher power densities than Tesla. Even Tesla relies on radial electric motors, a legacy technology more than 40 years old with very little left to give in terms of innovation.īut YASA’s axial-flux design, which has very thin segments, means they can be combined into powerful single drive units. ![]() YASA’s axial-flux electric motors generated EV industry interest because of their efficiency, high power density, small size and low weight.īy contrast, the “radial” electric motor design is more common in today’s EV market. The company will retain its own brand, team, facilities and location in Oxford. as a fully owned subsidiary, serving both Mercedes-Benz and existing customers like Ferrari. But YASA is likely to be an entity worth watching.įounded in 2009 after being spun out of Oxford University, YASA will now develop ultra-high-performance electric motors for Mercedes-Benz’s AMG.EA electric-only platform. The acquisition didn’t exactly garner enormous press attention, as scant other details were announced. Back in July, YASA (formerly Yokeless And Segmented Armature), a British electric motor startup with a revolutionary “axial-flux” motor, was acquired by Mercedes-Benz. ![]()
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