SYSTEM FOR CONTROLLING A MOTOR OF VEHICLE
First Claim
1. A system for controlling a motor of a vehicle, comprising:
- a power source configured to supply direct current (DC) electricity;
a converter configured to selectively receive and convert the DC electricity of the power source into inverter input voltage;
a relay module configured to selectively connect the power source to the converter;
an inverter module configured to receive the inverter input voltage from the converter, convert the inverter input voltage into 3-phase AC current, and supply the 3-phase AC current to the motor; and
a controller configured to control operations of the converter, the relay module, and the inverter module,wherein the controller performs a minimum heat-generation control to minimize the inverter input voltage that is a sum of heat generated due to a flux-weakening control and heat generated due to suppression of the flux-weakening control by the converter, the minimized inverter input voltage input to the inverter module.
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Accused Products
Abstract
A system for controlling a motor of a vehicle that improves fuel economy by minimizing a sum of heat generated by the motor and heat generated by a converter, is disclosed. More specifically, a power source supplies DC electricity; a converter selectively receives and converts the DC electricity of the power source into inverter input voltage. A relay module selectively connects the power source to the converter and an inverter module receives the inverter input voltage from the converter, converts the inverter input voltage into 3-phase AC current, and supplies the 3-phase AC current to the motor. Further, a controller controls operations of the converter, the relay module, and the inverter module, to perform to minimize the inverter input voltage that is a sum of heat generated due to the flux-weakening control and heat generated due to suppression of the flux-weakening control.
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Citations
12 Claims
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1. A system for controlling a motor of a vehicle, comprising:
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a power source configured to supply direct current (DC) electricity; a converter configured to selectively receive and convert the DC electricity of the power source into inverter input voltage; a relay module configured to selectively connect the power source to the converter; an inverter module configured to receive the inverter input voltage from the converter, convert the inverter input voltage into 3-phase AC current, and supply the 3-phase AC current to the motor; and a controller configured to control operations of the converter, the relay module, and the inverter module, wherein the controller performs a minimum heat-generation control to minimize the inverter input voltage that is a sum of heat generated due to a flux-weakening control and heat generated due to suppression of the flux-weakening control by the converter, the minimized inverter input voltage input to the inverter module. - View Dependent Claims (2, 3)
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4. A system for controlling a motor of a vehicle comprising
a converter configured to convert direct current (DC) electricity of a power source into inverter input voltage, an inverter module configured to convert the inverter input voltage of the converter into 3-phase alternating current (AC) current and supply the AC current to the motor, and a controller configured to control operations of the converter and the inverter module, wherein the controller performs flux-weakening control where flux having a direction opposite to a direction of flux generated by the motor is generated, and suppresses the flux-weakening control so as to reduce heat generated by the flux-weakening control, and wherein the controller performs a minimum heat-generation control to minimize the inverter input voltage that is a sum of heat generated due to the flux-weakening control and heat generated due to suppression of the flux-weakening control, the minimized inverter input voltage input to the inverter module.
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7. A non-transitory computer readable medium containing executable program instructions executed by a controller, comprising:
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program instructions that convert direct current (DC) electricity of a power source into inverter input voltage; program instructions that convert the inverter input voltage of the converter into 3-phase alternating current (AC) current and supply the AC current to the motor; program instructions that control operations of the converter and the inverter module; program instructions that perform a minimum heat-generation control to minimize the inverter input voltage that is a sum of heat generated due to the flux-weakening control and heat generated due to suppression of the flux-weakening control; and program instruction that input the minimized inverter input voltage into the inverter module. - View Dependent Claims (8)
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10. A method for controlling a motor of a vehicle, comprising:
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converting, by a converter, direct current (DC) electricity of a power source into inverter input voltage; converting, by an inverter module, the inverter input voltage of the converter into 3-phase alternating current (AC) current and supply the AC current to the motor; performing, by a controller, a minimum heat-generation control to minimize the inverter input voltage that is a sum of heat generated due to the flux-weakening control and heat generated due to suppression of the flux-weakening control; and inputting, by the controller, the minimized inverter input voltage into the inverter module. - View Dependent Claims (11, 12)
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Specification