BMW’s hybrid motor design seeks to deliver high efficiency and power density with lower rare earth use
Green Car Congress
AUGUST 13, 2013
As one point of comparison, the permanent magnet motor in the 2011 Nissan LEAF was rated at 80 kW from a 58 kg motor, for a SP of 1.38 Permanent magnet motors tend to offer a compact design with high torque density, and can take advantage of a lower current that induction motors. Source: BMW patent application Nº 2012/0267977.
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