Electric vehicles were in fact introduced before internal combustion engine vehicles. Similarly, the wheel hub motors have been invented as early as in late XIX century. What were the obstacles which suppressed the innovations until their rediscovery in the recent years?
While designing a synchronous electric machine or a whole electric drive it is often useful to estimate its external characteristics \(T(\omega)\). Such plot can be used to predict practical speed range of a drive given its maximum voltage and current limits or conversly to find required parameter...