Motor controller and control method thereof, and error detecting apparatus of inverter
First Claim
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1. A motor controller, comprising:
- a power supply which supplies DC power;
an inverter which converts the DC power into AC power to be supplied to a motor;
a shunt resistor which connects the power supply and the inverter; and
a controller which supplies a control signal to the inverter to drive the motor and determines an error of the inverter when a size of a voltage between ends of the shunt resistor is less than a predetermined first reference value.
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Abstract
A motor controller, including: a power supply which supplies DC power; an inverter which converts the DC power into AC power to be supplied to a motor; a shunt resistor which connects the power supply and the inverter; and a controller which supplies a control signal to the inverter to drive the motor and determines an error of the inverter when it is determined that a size of voltage between both ends of the shunt resistor is less than a predetermined first reference value. Thus, a motor controller is provided which detects an error of an inverter more easily and precisely, and a control method thereof and an error detecting apparatus of an inverter.
21 Citations
18 Claims
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1. A motor controller, comprising:
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a power supply which supplies DC power;
an inverter which converts the DC power into AC power to be supplied to a motor;
a shunt resistor which connects the power supply and the inverter; and
a controller which supplies a control signal to the inverter to drive the motor and determines an error of the inverter when a size of a voltage between ends of the shunt resistor is less than a predetermined first reference value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of controlling a motor controller having a shunt resistor and an inverter, comprising:
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a supplying a control signal to the inverter to drive a motor;
a detecting a size of a voltage between ends of the shunt resistor;
a comparing the size of the detected voltage with a first reference value; and
a displaying an error of the inverter when the size of the detected voltage is less than the first reference value. - View Dependent Claims (12, 13)
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14. An error detecting apparatus of an inverter having a shunt resistor, comprising:
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a voltage detector which detects a size of a voltage between ends of the shunt resistor; and
a microcomputer which determines an error of the inverter when the size of the voltage detected by the voltage detector is less than a first reference value. - View Dependent Claims (15, 16, 17)
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18. A motor controlling system, comprising:
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a shunt resistor which connects a power supply to a power inverter which converts DC power from the power supply into AC power to be supplied to a motor; and
a controller which supplies a control signal to drive a motor to an inverter and determines whether there is an error of the inverter when a size of a voltage between ends of the shunt resistor is less than a predetermined reference value.
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Specification