General-purpose design of dc-ac inverters in electrified automobile systems
AssigneeAdvanced Power Electronic Solutions, LLC.
InventorsHua BAI, Zhong NIE, Allan TAYLOR
Life of this patent
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Abstract
A general purpose DC-AC inverter in an electrified automobile system provides DC-AC inverter control based on different types of the motors. The DC-AC converter is configured to convert a voltage from a primary battery system of the EV to different voltage/current waveforms. One controller controls different types of motors without changing the firmware. Sensorless control is also achieved based on the same firmware.
Claims40
An electrified vehicle comprising:
- a primary battery system;
- a drivetrain;
- a first motor of a first respective motor type and a second motor of a second respective motor type different from the first respective motor type, the first motor and the second motor constituting at least two of a plurality of motors, the first respective motor type and the second respective motor type constituting at least two of a plurality of different motor types;
- and
- a DC-AC inverter having different interfaces corresponding to the plurality of different motor types;
- wherein the primary battery system powers at least one of the plurality of motors, via the inverter, to activate the drivetrain.
A method, for controlling a plurality of different types of motors in an electrified vehicle, comprising:
- determining, by a plurality of sensors, sensor information including at least one of motor speed information and motor position information, for at least an operational one of the plurality of different types of motors;
- generating, by a control board, a control signal based on the determined sensor information;
- converting the control signal into a gate signal using a gate-drive board;
- and
- controlling, by a power board, the voltage and current supplied to an electrified powertrain based on a torque request,
- wherein the control board has different respective interfaces corresponding to the plurality of different types of motors.
A method of controlling a motor, comprising:
- making a determination, using a sensor, at least one of motor speed information and motor position information of the motor;
- generating, by a control board, a pulse-width modulation signal based on the determination;
- sampling, by the control board, at least one of phase current information and torque information of the motor, to provide sampled information;
- making a comparison, by the control board, of the sampled information to at least one of a predetermined target current and a predetermined target torque;
- and
- adjusting, by the control board, at least one of a width and a duty cycle of the pulse-width modulation signal, based on the comparison.
A non-transitory computer readable medium configured to store instructions for controlling a hardware processor to implement control operations for an electrified vehicle, the operations comprising:
- making a determination of at least one of motor speed information and motor position information of a plurality of motors, the plurality of motors including a first motor of a first respective motor type and a second motor of a second respective motor type different from the first respective motor type, the first respective motor type and the second respective motor type constituting at least two of a plurality of different motor types;
- generating a control signal, based on the determination, with a control board;
- converting the control signal into a gate signal;
- and
- using the gate signal and a torque request to control the voltage and current supplied to an electrified powertrain;
- wherein the control board has different respective interfaces corresponding to the plurality of different motor types.
Dependencies are inferred from the claim text.