More Efficiency with Dual Motor Control in Battery Electric Vehicles
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American Axle & Manufacturing, Inc. has investigated the concept of a battery-powered four-wheel drive vehicle in which one axle is driven by a synchronous motor and the other by an asynchronous motor. In the following a control approach that optimizes the overall efficiency of the vehicle by combining the advantages of both motor types depending on the driving situation is presented.
Battery Electric Vehicles on the Rise
For decades now, Battery Electric Vehicles (BEVs) have been produced globally to meet budding consumer desire for low CO2transportation options as well as the growing government regulations that seek to curtail various types of emissions. For many years, progress was slow, with the first BEVs like the GM EV1 employing technology elements like 34 Wh/kg lead-acid batteries, which have proved problematic . Now - fast forward 23 years from those early prototype days - lithium-ion battery technology exceeds 240 Wh/kg and the cost of lithium-ion battery systems is...