柴油发电机变转动惯量飞轮的仿真

Simulation of Variable Inertia Flywheel for Diesel Generator

为了提高柴油发电机受负荷冲击时的稳定性能,设计一种转动惯量可变的飞轮,通过增大柴油发电机的转动惯量来提高其转速稳定性。利用飞轮旋转产生的离心力使飞轮质量块产生位移,质量块位置的变化改变了飞轮的转动惯量,使得飞轮的转动惯量随转速而变化。对该变转动惯量飞轮进行建模和仿真,仿真结果表明:该变转动惯量飞轮使柴油发电机在低转速时具有良好的速度响应性能,在额定转速时具有更好的抗负荷扰动性能。该变转动惯量飞轮有效地提高了柴油发电机的供电质量,与固定转动惯量的柴油发电机相比,安装了变转动惯量飞轮的柴油发电机启动时的转速超调量较小,并且具有更好的转速稳定性能。

In order to improve the stability of diesel generator to against load impact,this paper proposes a flywheel with variable inertia,which increases the speed stability of the diesel generator by increasing its moment of inertia.The position of mass block changed by the centrifugal force generated by the rotation of flywheel,and the change of the mass block position lead to the inertia of the flywheel changes,so that the inertia of the flywheel changes with the rotational speed.The variable inertia flywheel is modeled and simulated.The result shows that the variable inertia flywheel makes the diesel generator get fast speed response at low speed and better load disturbance resistance at rated speed.The variable inertia flywheel effectively improves the power quality of diesel generator.Compared with fixed inertia diesel generator,the diesel generator equipped with variable inertia flywheel has a reduced speed overshoot during startup and better resistance to load disturbance at rated speed.