Flywheel technology has been in service for a while with pro

Flywheel technology has been in service for a while with proven reliability and predictable performance. This is possible because engineers implemented detailed model and studied the dynamic of various components. Given: A schematic of a flywheel energy storage model and parameters. Tasks: Determine any potential non-linear behavior and non-ideal conditions exist for any of the components. Give a brief description of the scenario where non-linearity can occur and explanation of the impact to the accuracy to the model.

Solution

1.for flywheel

For the machine acting a variable motion, its equivalent drive moment (M_d) does not always equal to the equivalent resistant moment (M_r) even during the stable status. Since its equivalent inertia of moment (J_e) can not vary correspondingly to this change, the angular velocity of its equivalent component, generally the main shaft or crank, will fluctuate periodically. Serving as a reservoir by storing energy during the period when the supply of energy is more than the requirement and releasing it during the period when the requirement of the energy is more than the supply, a flywheel provides an effective way to smooth out the fluctuation of speed.

2.there is some thickness of flywheel which effects its calculation of moment of interia

3.there is large value of friction assocaited with flywheel which increase power losses

for motor

1.it doesnt provide constant torque

for bearing

1.its viscocity varies with temperature