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US 12,703,265 B2Granted
Active ripple energy storage circuit implementation using the inverter system controller and electric machine
AssigneeFord Global Technologies, LLC
InventorMohamed Elshaer
Life of this patent
Estimating the term…
Abstract
An automotive power system has circuitry, including a capacitor, inductor, and switch in series, connected such that a terminal of the switch is directly connected with only one phase leg of an inverter system controller between an electric machine and the inverter system controller and a terminal of the capacitor is referenced to a negative terminal of a traction battery. The switch is closed while the traction battery is being charged with energy from an AC grid, and open while the traction battery is not being charged.
Claims12
A vehicle comprising:
- a traction battery;
- an electric machine;
- an inverter system controller connected between the traction battery and electric machine;
- circuitry, including a capacitor, inductor, and switch in series, connected such that a terminal of the switch is directly connected with only one phase leg of the inverter system controller between the electric machine and inverter system controller and a terminal of the capacitor is referenced to a negative terminal of the traction battery;
- and
- a controller programmed to close the switch while the traction battery is being charged with energy from an AC grid, and to open the switch while the traction battery is not being charged.
3 more elements
A method comprising:
- responsive to a command to charge a traction battery with energy from an AC grid, closing a switch of circuitry including a capacitor and inductor connected in series with the switch such that a terminal of the switch is directly connected with an electric machine and a terminal of the capacitor is referenced to a negative terminal of the traction battery that connects an inverter system controller between the traction battery and electric machine;
- and
- operating the inverter system controller to create zero voltage across one winding of the electric machine such that two windings of the electric machine are in parallel.
Dependencies are inferred from the claim text.