Special Modes of Vibratory Electric Drive

Abstract: The paper deals with the algorithm of the supply voltages and currents for special modes of operation of vibrating actuators being the most common type of vibratory electric drive. A special feature of the electric drive under consideration is the double-fed electric machine (DFEM) being a drive motor for the vibrating system. It is demonstrated, that for DFEM operating in the oscillatory, vibrational-rotational and polyharmonic modes, the best performance shows an electric drive with cosine frequency modulated control signal. A mathematical model of the DFEM has been developed, that allows investigating various operating modes of vibration equipment. The evidences for practical relevance for the vibration drives for various applications are provided. The methods to estimate the way the load parameters affect the dynamic performance of the motor drive are used. The effect of power supply and load parameters on the dynamic performance of the DFEM and some practical recommendations are outlined.

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