用于飞轮储能系统的异步电动机加速过程控制方式研究

Research on Controlling Manner During Acceleration of Induction Motor in The Flywheel Energy Storage System

本文研究了用于一种新颖的飞轮储能系统的异步电动机的工作过程,该系统主要包括飞轮转子、用于机电能量转换的同步发电机、拖动异步电动机及变频器、调节发电机电压的励磁机。建立了异步电机在储存能量带动飞轮转子加速时的数学模型,通过数学模型的求解得出了最优控制规律。在该控制方式下电机输出电功率大,储存的能量多,电机的电密以及磁密不超过设计的极限值。

This paper researches the induction motor＇s working manner used in flywheel energy storage system, which is composed of four parts： the flywheel that storage energy, the synchronous generator that transforms electrical energy and rotational energy, induction motor and inverter, exciter. A mathematical model of the induction motor is used to find the optimal controlling manner when developing speed. In this manner, the system storages more energy, further more, the current density and flux density are both less than designed limits.