Electricity: motive power systems – Induction motor systems – Braking
Patent
1999-06-04
2000-12-26
Martin, David S.
Electricity: motive power systems
Induction motor systems
Braking
318802, 318811, 318380, H02P 318
Patent
active
061665126
ABSTRACT:
In controller for diesel electric locomotive, after output from an alternating current generator driven by a diesel engine is rectified into direct current power, the direct current power is inverted into alternating current power by an inverter to thereby carry out a power run control of an induction motor, and energy generated by the induction motor is consumed at a brake resistor by moving a brake chopper when the brake is applied. When a revolving speed of said induction motor exceeds a predetermined value at the time of power run, an slip control unit detects slip of wheels and outputs an output reduction signal for the induction motor in correspondence to a level of slip. An output torque of the induction motor is reduced with the output reduction signal. Further, a reduced amount of the output torque of the induction motor is consumed at a brake resistor through a conduction ratio control of the brake chopper.
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Martin David S.
Mitsubishi Denki & Kabushiki Kaisha
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