【摘要】 本文介绍一种异步电动机变频调速系统的再启动方法,该方法是基于异步电动机在某角频率下发生谐振的阻抗特性来实现的,它无须传感器和高速运算器,利用低成本的处理器实现高精度调速,通过5.5KW的异步电动机实验仿真,已证实此方法的可行性。更多还原

【Abstract】 This paper proposes a restart method for an asynchronous motor drive system without speed sensor. It is based on the characteristic of the asynchronous motor impedance which is resonant for a frequency corresponding to the rotor angular speed. Since high speed ACR are not required, it can be implemented by using a low cost processor. The validity of the method is verified by simulation and experiments using a standard 5.5kw asynchronous motor.更多还原