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US 11,142,075 B2Granted
Efficient regenerative electrical braking
AssigneeHamilton Sundstrand Corporation
InventorRajkumar Sengodan
Life of this patent
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Abstract
Provided are embodiments for a braking system, where the system includes a controller, a motor coupled to an H-bridge network, a DC link coupled to the motor, and an electrical braking system electrically coupled to the motor. The electrical braking system includes a sense circuit configured to sense a condition of the DC link, a brake resistor coupled to the DC link, a drive circuit coupled to the sense circuit, and a transformer for regeneration. Also, provided are embodiments of a method for operating an efficient regenerative resonance electrical braking system.
Claims17
A method comprising,
- operating an electrical braking system in at least one mode;
- sensing a condition of the electrical braking system;
- performing braking based at least in part on the at least one mode and the sensed condition;
- coupling a transform to each phase of a motor;
- and
- performing braking for each phase based at least in part on the at least one mode and the sensed condition.
3 more elements
A system comprising:
- a controller;
- a motor coupled to an H-bridge network;
- a DC link coupled to the motor;
- and
- an electrical braking system electrically coupled to the motor, the electrical braking system comprising:
- a sense circuit configured to sense a condition of the DC link;
- a brake resistor coupled to the DC link;
- a drive circuit coupled to the sense circuit;
- and
- a transformer for regeneration;
- wherein the electrical braking system is configured in a star connected configuration, wherein the star connected configuration comprises a transformer coupled to each phase of the motor, wherein each transformer performs braking for each phase based at least in part on at least one of a mode and the sensed condition.
8 more elements
Dependencies are inferred from the claim text.