The determination of rotational inertia of flywheel for pulsed-load diesel Generator

Flywheel is used to compensate the energy difference and to suppress the shafting torsional vibration in the diesel generator due to its pulsed load. In this paper, the relation between the rotational inertia of flywheel and the dynamic speed droop of generator unit and the shafting torsional vibration is analyzed on the basis of preliminary estimate of rotational inertia of flywheel. At last, a conclusion is made that kinds of factors should be considered fully while determining flywheel rotational inertia to achieve optimal performance.