Abstract. The investigation deals with multi-motor electric drives with frequency converters of various structures: with a common converter, with an individual converter, with a multiinverter frequency converter. Their shortcomings and advantages were analyzed and there were drawn conclusions about the expediency of using each structure. Expediency of using multiinverter frequency converters with an active frond end was shown to ensure the highest power characteristics of multi-motor electric drives of drilling rigs' main mechanisms.
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