MOTOR CONTROL APPARATUS HAVING PROTECTION OPERATION UNIT, AND MACHINE LEARNING APPARATUS AND METHOD THEREOF
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Abstract
A machine learning apparatus learns conditions associated with power failure on the side of an AC power supply in a motor control apparatus which converts AC power into DC power, outputs the DC power to a DC link, further converts the DC power into AC power for driving a motor, and supplies the AC power to the motor, includes a state observation unit which observes a state variable including at least one of data associated with the value of a power supply voltage on the AC power supply side, data associated with the amount of energy stored in a DC link capacitor provided in the DC link, and data indicating whether a protective operation for the motor control apparatus is successful, and a learning unit which learns conditions associated with power failure on the AC power supply side in accordance with a training data set defined by the state variable.
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Citations
16 Claims
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1-8. -8. (canceled)
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9. A machine learning apparatus for learning (i) a power failure detection level, which is a value of a power supply voltage defined as a criterion for determination as to whether power failure has occurred on an AC power supply side of a motor control apparatus, and (ii) a power failure detection time, which is a time for which the power supply voltage on the AC power supply side of the motor control apparatus has been lower than the power failure detection level, in the motor control apparatus which converts AC power supplied from the AC power supply side into DC power, outputs the DC power to a DC link, further converts the DC power into AC power for driving a motor, and supplies the AC power to the motor,
the machine learning apparatus comprising: -
a state observation unit which observes a state variable including data associated with a value of a power supply voltage on the side of the AC power supply, data associated with an amount of energy stored in a DC link capacitor provided in the DC link, data indicating whether a protective operation for the motor control apparatus is successful, and data associated with motor output; and a learning unit which learns the power failure detection level and the power failure detection time, by repeating update of a function for changing the power failure detection level and the power failure detection time, based on the state variable. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A machine learning method for learning (i) a power failure detection level, which is a value of a power supply voltage defined as a criterion for determination as to whether power failure has occurred on an AC power supply side of a motor control apparatus, and (ii) a power failure detection time, which is a time for which the power supply voltage on the AC power supply side of the motor control apparatus has been lower than the power failure detection level, in the motor control apparatus which converts AC power supplied from the AC power supply side into DC power, outputs the DC power to a DC link, further converts the DC power into AC power for driving a motor, and supplies the AC power to the motor,
the method comprising: -
a state observation step of observing a state variable including data associated with a value of a power supply voltage on the side of the AC power supply, data associated with an amount of energy stored in a DC link capacitor provided in the DC link, data indicating whether a protective operation for the motor control apparatus is successful, and data associated with motor output; and a learning step of learning the power failure detection level and the power failure detection time, by repeating update of a function for changing the power failure detection level and the power failure detection time, based on the state variable.
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Specification