![]() ![]() That makes axial flux motors much more compact the axial length of the machine is much shorter compared to radial machines, a factor that is often crucial for an application such as an inwheel motor. ![]() That can only go so far, however, so moving to a completely different machine type such as axial flux might be a good alternative.Īxial flux permanent magnet machines typically provide more torque for a given volume of motor than a radial motor, as the active magnetic surface area is the face of the motor’s rotor rather than the outside diameter. Traditional radial flux motors, which use permanent magnets or induction motors in an electric field, are undergoing extensive development aimed at optimising their weight and cost. For many years they have been used in stationary applications such as elevators and agricultural machinery, but over the past decade a number of developers have been working on improving the technology to make it suitable for applications such as electric motorcycles, airport pods, delivery trucks, electric cars and even aircraft. Axial flux motors can change the way a powertrain is designed, moving it from the axle to inside the wheelĪxial flux motors have many EV design advantages over their radial flux counterparts, as Nick Flaherty explains.Ī new type of motor is gaining traction in the e-mobility sector – the axial flux type. ![]()
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