Hybrid energy off highway vehicle propulsion circuit

Details Hybrid energy off highway vehicle propulsion circuit Hybrid energy off highway vehicle propulsion circuit

2007-03-06

2007-03-06

Le, Mark T. (Department: 3617)

Railway rolling stock

Locomotives

Generating electric

C105S050000, C105S061000, C180S065310

Reexamination Certificate

active

10914731

ABSTRACT:
A system and method for retrofitting a propulsion circuit of an existing Off Highway Vehicle to enable the propulsion circuit to operate as a hybrid energy Off Highway Vehicle propulsion circuit. The hybrid propulsion circuit includes a primary power source, and a traction motor for propelling an Off Highway Vehicle in response to the primary electric power. The traction motor has a motoring mode of operation and a power dissipation mode of operation. The traction motor generates dynamic braking electrical power in the power dissipation mode of operation. An electrical energy storage system includes a chopper circuit coupled to an energy storage device. The storage device is responsive to the chopper circuit to selectively store electrical energy generated in the power dissipation mode. The storage system selectively provides secondary electric power from the storage device to traction motor to assist in propelling the Off Highway Vehicle during the motoring mode.

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