CONTROL CIRCUIT FOR OPERATING A DIRECT CURRENT MOTOR IN THE TRACTION AND BRAKING MODES

摘要

The invention relates to a control circuit allowing traction or braking operation both in dissipative mode and in energy recovery mode of a direct current motor, and in particular, the progressive, continuous and reversible passage of one braking mode to another. According to the invention, the dissipation resistance which is off during the traction operation of the motor is connected in series with the latter during braking operation regardless of the mode. Application to railway traction.