Special Modes of AC Drives Operation in the Mining Industry

Abstract

Abstract. This paper presents research of special modes of AC drives operation. The possibility of obtaining of vibrational and vibrationalrotational modes of the AC drives on the basis of multipurpose polyharmonic mode of actuating motor operation is shown. Multipurpose electric motor with improved power characteristics (double-fed machine) has been proposed as the actuating motor of the electroactivator of the coal grizzley. The formation algorithm of polyharmonic operation mode of the double-fed machine is developed. This algorithm allows studying different types of special modes of actuating motor. Research results of dynamic parameters of a universal electric motor of the electroactivator of the coal grizzley are presented. The practical significance of the study of using of double-fed machine in the primary coal processing is shown.