Electric motor with integrated charger
AssigneeFord Global Technologies, LLC
InventorsAli Najmabadi, Hadi Malek
Life of this patent
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Abstract
A vehicle includes an electric machine with two sets of galvanically isolated windings, first and second inverters, a switching arrangement, and a controller. During charge, the controller operates the switching arrangement to isolate the first inverter from the electric machine to permit charge current to flow through one of the sets and induce a voltage in the other of the sets. During propulsion, the controller operates the switching arrangement to couple the first inverter with the one of the sets such that the first and second inverters are configured to only power one of the sets.
Claims15
A vehicle comprising:
- an electric motor including first and second sets of galvanically isolated windings;
- first and second inverters, the second set of galvanically isolated windings being connected with the second inverter;
- a traction battery;
- and
- switches between the first inverter and first set of galvanically isolated windings configured to, during charge, disconnect the first inverter from the first set of galvanically isolated windings such that current from a charge port coupled with a source flows through the first set of galvanically isolated windings and induces a voltage in the second set of galvanically isolated windings to charge the traction battery while galvanically isolating the source from the traction battery.
A vehicle comprising:
- an electric motor including first and second sets of galvanically isolated windings;
- a first inverter associated with the first set of galvanically isolated windings;
- a second inverter connected with the second set of galvanically isolated windings;
- and
- a controller configured to,
- during charge, disconnect the first inverter from the first set of galvanically isolated windings to permit charge current to flow through the first set of galvanically isolated windings and induce a voltage in the second set of galvanically isolated windings, and
- during propulsion, to connect the first inverter with the first set of galvanically isolated windings.
A method for operating a vehicle power system comprising:
- responsive to charge mode, disconnecting by a controller a first inverter from a first set of windings of an electric motor while a second inverter is connected with a second set of windings of the electric motor that are galvanically isolated from the first set of windings such that current from a charge port coupled with a source flows through the first set of windings and induces a voltage in the second set of windings to charge a traction battery while galvanically isolating the charge port from the traction battery.
Dependencies are inferred from the claim text.