zaveri
Branch Unspecified
29 Apr 2012

# Flywheel Control

Now consider a situation :

a very flywheel is mounted on the spindle of an electric motor, and the motor rotates at its highest speed. now the flywheel is designed in such a way that if the motor is turned off, the flywheel will cause the spindle to rotate at the same high speed for atleast half an hour, after the power to the motor is cut off.

now suppose we want to turn off the motor and want the spindle to stop at the same time, without using any mechanical brakes, how can this be achieved electrically ?

Branch Unspecified
22 Jul 2012
The question is really interesting, there should be some way!
Have you found anything?

zaveri

Branch Unspecified
22 Jul 2012
i have considered that instead of just turning off the motor, we can reverse its polarity, so that the opposite torques cancel each other.

what do you think about it ?
22 Jul 2012
There is no escape from Newton's first law of motion.
So the first thing to do is to use a magnetic clutch and disengage the flywheel from the spindle. If the motor is a low inertia, printed circuit motor, a magnetic brake will stop it quickly. Even then there could be some delay due to even the small inertia of the spindle.

zaveri

Branch Unspecified
22 Jul 2012
bioramani
There is no escape from Newton's first law of motion.
So the first thing to do is to use a magnetic clutch and disengage the flywheel from the spindle. If the motor is a low inertia, printed circuit motor, a magnetic brake will stop it quickly. Even then there could be some delay due to even the small inertia of the spindle.
yeah that is true, the motor spindle will have some inertia.

all that i wanted to achieve is stop the flywheel from performing its function.