# How does a flywheel generate electricity at a constant voltage?

I believe I am missing something simple here. My question concerns flywheel energy storage.

Say we have stored some amount of energy in a spinning flywheel. The flywheel is attached to a generator. So the flywheel (and therefore the generator) would be spinning rapidly at first, and then gradually slow down as the rotational energy is converted into electrical energy.

It is my understanding that the induced voltage decreases as the angular velocity of the generator coil decreases. So how is it that we can get electricity at a constant voltage from this setup? Am I misunderstanding how the generator works?

• When you say the generator, what do you mean? A specific instance of a generator? -located where? Or maybe specific type of generator? Have you read the wiki page? en.wikipedia.org/wiki/Electric_generator – hpekristiansen Jan 30 '14 at 22:05