electric motor

The efficiency of the induction motor can be improved by controlling the air-gap flux. The flux level varies with load torque i.e. at light load torque the flux required is less than the flux required as the load increases. When the motor is operating at a particular operating point defined by speed and torque, an infinite pair of impressed voltage/frequency can achieve this operating point. However only one particular pair of voltage/frequency will result in the minimum losses and maximum ef ...

We have done several years of research on recycling rotating electric machines. We have tried to identify new guidance on this matter. We conclude:
1. There are cases where a rewound motor is better than a new one. We have the opportunity to design the winding tuned to the application. The result in this case might be an upgraded motor.
2. The biggest problem we identify in our research has been mentioned by several discussions. The magnetic core might suffer degradation during repa ...