System and method for operating a hybrid vehicle system

摘要

System including a switch control module that is configured to control operation of a first contactor and a second contactor in a vehicle system. The first and second contactors are configured to selectively connect front-end and direct-current (DC) buses, respectively, to an energy storage system of the vehicle system. The front-end bus is configured to receive electrical power from an external power source and provide the electrical power to a converter device. The converter device is configured to supply DC power to the DC bus. The switch control module is configured to close the second contactor when the vehicle system is operably coupled to the external power source so that the energy storage system is charged by the DC power. The switch control module is configured to close one of the first contactor or the second contactor when the vehicle system is operably decoupled to the external power source.

主权项

1. A system comprising:
a switch control module configured to control operation of a first contactor and a second contactor in a vehicle system, the first and second contactors configured to selectively connect front-end and direct-current (DC) buses, respectively, to an energy storage system of the vehicle system, the front-end bus configured to receive electrical power from an external power source and provide the electrical power to a converter device, the converter device configured to supply DC power to the DC bus. the DC bus configured to he coupled to a propulsion system of the vehicle system and configured to have a designated traction voltage for powering the propulsion system that is approximately equal to a charging voltage of the energy storage system; wherein the switch control module is configured to close the second contactor when the vehicle system is operably coupled to the external power source, the converter device configured to provide the DC power to the DC bus so that the energy storage system is charged and the propulsion system receives the DC power; wherein the switch control module is configured to close one of the first contactor or the second contactor when the vehicle system is operably decoupled to the external power source. the energy storage system configured to supply the electrical power to the propulsion system when the vehicle system is operably decoupled to the external power source, and wherein the switch control module is configured to control the first and second contactors during a regenerative mode in which the second contactor is closed while the vehicle system is braking.