Brake resistor control
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United States of America Patent
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Apr 23, 2013
Grant Date -
Oct 27, 2011
app pub date -
Apr 26, 2010
filing date -
Apr 26, 2010
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An electric drive system comprises a generator, a traction motor, a brake resistor, a bus, and a control unit. The generator, the traction motor, and the brake resistor are coupled electrically to the bus. The control unit is configured to determine a pulse-width-modulation duty cycle for the brake resistor (“brake dutyâ€) and control operation of the brake resistor according to the brake duty, wherein the brake duty can be a value intermediate of constant OFF and constant ON. A method of operating the electric drive system is also disclosed.
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