Multi-tasking power processor for a vehicle electric system
AssigneeHamilton Sundstrand Corporation
InventorsGregory I. Rozman, Vietson M. Nguyen
Life of this patent
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Abstract
A multi-tasking power processor (104) for a vehicle electric system (100) is provided. The multi-tasking power processor (104) includes a low voltage direct current bus interface (201), a high voltage direct current bus interface (202), and a motor interface (203). The multi-tasking power processor (104) also includes converter circuitry (200) selectively configurable as a direct current boost converter and a direct current buck converter between the low voltage direct current bus interface (201) and the high voltage direct current bus interface (202). The multi-tasking power processor (104) is further configurable as a motor drive between the motor interface (203) and the high voltage direct current bus interface (202).
Claims14
A multi-tasking power processor (104) for a vehicle electric system (100), comprising:
- a low voltage direct current bus connection (201);
- a high voltage direct current bus connection (202);
- a motor interface (203);
- and
- converter circuitry (200) selectively configurable as a direct current boost converter and a direct current buck converter between the low voltage direct current bus connection (201) and the high voltage direct current bus connection (202), and further configurable as a motor drive between the motor interface (203) and the high voltage direct current bus interface (202);
- wherein the converter circuitry (200) further comprises motor interface contactors (K1) and low voltage direct current bus connection contactors (K2, K3) selectively configurable to electrically connect and disconnect the motor interface (203) and the low voltage direct current bus connection (201) to the converter circuitry (200);
- wherein the converter circuitry (200) further comprises a plurality of switches (205) disposed between a high side (206) and a low side (208) of the high voltage direct current bus connection (202) to control current flow on a plurality of phases (210, 212, 214), and further wherein the plurality of phases (210, 212, 214) are electrically connected to the motor interface contactors (K1);
- and
- wherein the plurality of switches (205) provide a variable voltage and variable frequency on the plurality of phases (210, 212, 214) when the converter circuitry (200) is selectively configured as the motor drive.
A method for providing a multi-tasking power processor (104) in a vehicle electric system (100), comprising:
- coupling the multi-tasking power processor (104) to a motor (118), a low voltage direct current bus (124), and a high voltage direct current bus (112) of the vehicle electric system (100);
- selectively configuring converter circuitry (200) of the multi-tasking power processor (104) as a direct current boost converter and a direct current buck converter between the low voltage direct current bus (124) and the high voltage direct current bus (112);
- reconfiguring the converter circuitry (200) as a motor drive between the motor (118) and the high voltage direct current bus (112);
- wherein selectively configuring the converter circuitry (200) as the direct current boost converter and the direct current buck converter further comprises opening motor interface contactors (K1) and closing low voltage direct current bus interface contactors (K2, K3), and wherein reconfiguring the converter circuitry (200) as the motor drive further comprises closing the motor interface contactors (K1) and opening the low voltage direct current bus interface contactors (K2, K3);
- controlling current flow on a plurality of phases (210, 212, 214) using a plurality of switches (205) disposed between a high side (206) and a low side (208) of the high voltage direct current bus (112), wherein the plurality of phases (210, 212, 214) are electrically connected to the motor interface contactors (K1) and wherein the plurality of switches (205) provide a variable voltage and variable frequency on the plurality of phases (210, 212, 214) when the converter circuitry (200) is selectively configured as the motor drive.
Dependencies are inferred from the claim text.