FIELD: electrical engineering. SUBSTANCE: electric drive has electric motor 1, voltage inverter 2, D.C. current supply 3, current sensor 4 in inverter supply circuit, master generator 5, and pulse distributor 6. In addition, drive circuit is provided with controlled D.C. voltage changer 7, control unit 8, voltage setting element 10, voltage sensor 9, comparator 11, voltage-to-frequency changer 13. and display and protective unit 14. Controlled changer 7 is built around high-frequency resonance-tuned inverter. EFFECT: extended motor speed control range, improved reliability of drive, reduced mass and size of electronic unit. 4 dwg
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