HiI was interested in the idea of using an electric motor as a kind of long lasting flywheel. It would generate electricity as a dynamo and store this in a battery. The electricity produced would then be supplied back to the motor to turn it. I know there would be efficiency problems but what else would stop this design. It's just I've never heard of a motor being applied as both a motor and dynamo (except perhaps in a hydroelectric dam) and wondered if this might be a problemThanks to anyone who can give some insight!
In a hydroelectric pumped-storage system, you have a synchronous machine receiving electric power from the grid and operating as a motor to drive a pump to pump water to a reservoir at a higher elevation. The pump can also act as a turbine powered by water from the reservoir. The turbine drives the same synchronous machine as a generator to generate electric power back into the grid. The electrical machine and the turbomachine are have their shafts permanently coupled together. The electrical machine has external control circuitry that can relatively easily allow it to be applied as either a motor or a generator. The turbomachine is appropriately designed and equipped with external valves etc. that can relatively easily allow it to function as either a pump or a turbine. Francis turbines are apparently well suited for that. There are other instances in which electric machines are applied as either motors or generators. Motors are often used to supply braking torque. When they do that, they act as generators, receiving energy from the load and returning the energy to the power supply or to resistors that convert it to waste heat. Returning energy to the supply usually requires some additional control circuitry. You have not fully described what you have in mind. There is probably a way to do it, but there is a good possibility that once the proper control system has been designed, you might find that the control system can do the entire job electronically without using the motor.
Any AC motor could not generate electricity ! It is a waste of time effort .
As already said, an AC motor can#x27;t generate energy by it self. But a DC motor (with magnets) will do the job, it#x27;s actually made the same way a dynamo is. Tips you may need: 1 bypass any built in controller circuit when quot;dynamoquot;, re-switch it on when quot;motorquot;. 2 when dynamo the current you#x27;ll get will be pulsating when not alternate, so use a diode Bridge and a capacitor before the battery charger. 3 use a proper battery charger! Don#x27;t plug your battery straight away! 4 If the regeneration cycle (dynamo) is sufficiently longer than use cycle (battery powered), it will work as long as components are functioning.
