howv does the AC electric motor differ from DC electric motor structurally. can we use AC 220 volt 60 watt ceiling fan case be used and changing coil and make it DC electic motor of 36 volts if so what power WATT should be given to give same energy output
A ceiling fan is an induction motor (brushless, it is quiet). It is also bigger than a brush motor. Most hand power tools use a universal motor, since it is smaller. It has brushes and is noisy. A universal motor actually runs on either AC or DC. You cannot magically change the voltage rating on any motor, though there are many that are dual voltage (for example, either 120V or 240V) depending on how they are hooked up. A 220V ceiling fan? Must not be in the US. The only way to drive an induction motor from DC is to use an inverter (DC to AC converter).
I think the simplest solution would be to get a 24V lorry radiator fan motor from a breakers yard and step down the voltage. or go one stage further and power from a photo-voltaic pannel so it works whenever the sunshines and automatically stops at night. rewinding the motor and fixing the commutator, brushes etc is likely to be difficult if not impossible without completly re-building from scratch.
