DETERMINATION OF ASYNCHRONOUS MODE AND METHOD TO CONTROL THE EXCITATION OF A SYNCHRONOUS ELECTRIC MOTOR
Keywords:
synchronous motor, asynchronous mode, excitation feed, resynchronization.Abstract
The paper presents the results of research aimed at identifying the asynchronous mode of excited syn- chronous electric motors and their safety and stability. It is proposed to identify the asynchronous mode using a power polynomial from the ratio of the degrees of active and reactive power, determined from measured instantaneous values of currents and stator voltages of a synchronous electric motor. It is proposed to control the excitation system of a syn- chronous motor by cyclically switching the excitation winding to an additional resistance or an exciter based on a crite- rion representing the derivative of the power polynomial from the ratio of the active and reactive powers of the syn- chronous motor.
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