Question

Please I need a project topic name for a project in adjustable speed drives (AC drives...

Please I need a project topic name for a project in adjustable speed drives (AC drives in power electronics) and a guide on how to write the project. Thank you.

Homework Answers

Answer #1

we have two types of AC motors.

1. induction motors

2.synchronous motors.

in three phase induction motors, speed control is possible from both stator side and rotor side.

> we know torque is directly proportional to supply voltage.

> by using ac voltage controllers connected in each phase, so we will adjust the stator voltage then speed control is possible.

> in rotor side slip power recovery schemes available.i.e scherbius drive and kramers drive.

> by using above two methods efficiently speed control is possible and also losses are minimum.

> in rotor side, rotor resistance control method is also there. but here losses are more.to reduce these losses power electronics based resistance control method is also available.

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