Synchronous machine on sinus nourishment in our university department has been fully tested. More than 76% of the efficiency from it is not obtained. In our engine, the theoretical efficiency can be 98%. We reduce the moment ripple by increasing the phases. And the mass of the wheel motor is...
In direct drive it will be difficult to be a sensorless. We are trying to do a non-point-to-point measuring the rate of current build-up, and comparing with the tabular value, calculating lags or outstrips. But it does not work well at the start. No problem optical encoder or resolver.
Also I...