FIELD: transport and electrical engineering; electric cars, medium and large power converter for traction electric drive. SUBSTANCE: electric drive includes voltage converter, DC traction electric motor, field regulator, reservoir capacitor and control unit. Design peculiarity of proposed electric drive is use of voltage converter which has high frequency transistor switch, two thyristor switches and three diodes. proposed circuit of converter is simple but provides operation of separate excitation traction motor at simultaneous usage of energy of commutation losses for supplying field winding. EFFECT: enlarged operating capabilities. 1 dwg
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