The experimental identification method of the dynamic efficiency for frequency regulation algorithms of AEDs

Vladimir L. Kodkin (South Ural State University)
Aleksandr S. Anikin (South Ural State University)

International Journal of Power Electronics and Drive Systems (IJPEDS)
Vol 12, No 1: March 2021

The article proposes and substantiates a method for studying the dynamics of an asynchronous electric drives with frequency control from the input side of the signal for setting the speed of rotation of the electric motor. In this method, a constant speed reference signal is added to a harmonic variable frequency signal. The set of amplitude changes and phase shifts of velocity oscillations are the initial data for identifying the dynamics of the studied control method. The logic of this method is determined by the previously obtained nonlinear transfer function of the link that forms the mechanical moment in the asynchronous electric drive with frequency control. Experiments have shown the dynamic benefits of the drive with positive stator current feedback.