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US 9,455,651 B2Granted
Motor driver having integrated braking chopper
AssigneeCaterpillar Inc.
InventorsRodwan T. Adra, Edward L. Zwilling, Thomas M. Baker, William J. Tate, Eric M. Andris
Life of this patent
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Abstract
A motor driver for driving a motor is disclosed. The motor driver has a first power bus, a first switching device coupled between the first power bus and a first terminal of the motor, a second power bus, a second switching device coupled between the second power bus and a second terminal of the motor, and an integrated braking chopper coupled between the first and second power buses. The integrated braking chopper is configured to dissipate an extra power generated by the motor.
Claims21
A motor driver, comprising:
- a first power bus;
- a first switching device coupled between the first power bus and a first terminal of a motor, wherein the first switching device includes a first insulated-gate bipolar transistor (IGBT) having a first gate configured to receive a first controlling signal, a first collector coupled to the first power bus, and a first emitter coupled to the first terminal of the motor;
- a second power bus;
- a second switching device coupled between the second power bus and a second terminal of the motor, wherein the second switching device includes a second IGBT having a second gate configured to receive a second controlling signal, a second collector coupled to the second terminal of the motor, and a second emitter coupled to the second power bus;
- and
- an integrated braking chopper coupled between the first and second power buses, the integrated braking chopper being configured to dissipate an extra power generated by the motor.
3 more elements
A motor driver comprising:
- a first power converter configured to provide a first electric power to a motor, wherein the first power converter includes:
- a first power bus;
- a first switching device coupled between the first power bus and a first terminal of the motor;
- a second power bus;
- and
- a second switching device coupled between the second power bus and a second terminal of the motor;
- a second power converter configured to provide a second electric power to the motor, wherein the second power converter includes:
- a third power bus;
- a third switching device coupled between the third power bus and a third terminal of the motor;
- a fourth power bus;
- and
- a fourth switching device coupled between the fourth power bus and a fourth terminal of the motor;
- and
- a rectifier coupled to the first and second power converters, the rectifier is configured to:
- generate a DC voltage from an AC input,
- divide the DC voltage into at least a first DC output and a second DC output, and
- apply the first DC output to the first power converter and the second DC output to the second power converter.
14 more elements
A motor system comprising:
- a motor;
- and
- a motor driver configured to drive the motor, the motor driver including:
- a first power converter including:
- a first power bus;
- a first switching device coupled between the first power bus and the motor;
- a second power bus;
- a second switching device coupled between the second power bus and the motor;
- and
- a first integrated braking chopper coupled between the first and second power buses, the first integrated braking chopper being configured to dissipate an extra power generated by the motor;
- a second power converter including:
- a third power bus;
- a third switching device coupled between the third power bus and the motor;
- a fourth power bus;
- a fourth switching device coupled between the fourth power bus and the motor;
- and
- a second integrated braking chopper coupled between the third and fourth power buses, the second integrated braking chopper being configured to dissipate the extra power generated by the motor;
- and
- a rectifier coupled to the first and second power converters, configured to:
- generate a first DC output and a second DC output from an AC input, and
- apply the first DC output to the first power converter and the second DC output to the second power converter.
18 more elements
Dependencies are inferred from the claim text.