FIELD: transport engineering; electric cars.
SUBSTANCE: proposed device to control dc traction motor and unit to form preset values of armature and field currents makes it possible to use separate excitation dc machine at traction and brake modes over ensure range of speeds and loads with due account of real limitations as to current and voltage. Required speeds and torque are automatically achieved at minimum possible losses in said point.
EFFECT: improved power and dimensional characteristics.
3 cl, 3 dwg
