Externally excited synchronous machine-based electric drive integrating galvanically isolated AC
AssigneeFord Global Technologies, LLC
InventorsBaoming Ge, Fan Xu
Life of this patent
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Abstract
An automotive power system integrates a power factor correction circuit, an H-bridge power module, an externally excited synchronous machine, a traction inverter, and a traction battery. The system operates in two modes: driving and charging. In driving mode, power flows from the traction battery through the H-bridge power module and the traction inverter to the externally excited synchronous machine, enabling vehicle propulsion. In charging mode, power from an AC source is routed sequentially through the power factor correction circuit, the H-bridge power module, the synchronous machine, and the traction inverter.
Claims17
A vehicle comprising:
- a power system, including a power factor correction circuit, an H-bridge power module, an externally excited synchronous machine, a traction inverter, and a traction battery, configured such that during a drive mode, the H-bridge power module and traction inverter are each connected between the traction battery and externally excited synchronous machine, and during a charge mode, the H-bridge power module and externally excited synchronous machine are connected between the power factor correction circuit and traction inverter.
A method comprising:
- changing connection states of contactors such that, during a drive mode, power from a traction battery flows through each of an H-bridge power module and a traction inverter to an externally excited synchronous machine that drives a vehicle, and during a charge mode, power from an AC source flows sequentially through a power factor correction circuit, the H-bridge power module, the externally excited synchronous machine, the traction inverter, and to the traction battery.
An automotive power system comprising:
- a power factor correction circuit, an H-bridge power module, an externally excited synchronous machine, a traction inverter, and a traction battery collectively configured such that, during a drive mode, power from the traction battery flows through each of the H-bridge power module and traction inverter to the externally excited synchronous machine, and during a charge mode, power from an AC source flows sequentially through the power factor correction circuit, H-bridge power module, externally excited synchronous machine, traction inverter, and to the traction battery.
Dependencies are inferred from the claim text.