Method for controlling medium-voltage inverter and system comprising the same
AssigneeLsis Co., Ltd.
InventorKyoung-Sue Kim
Life of this patent
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Abstract
Disclosed herein are a method for controlling a medium-voltage inverter, and a system including the same. The system includes a motor, a medium-voltage inverter driving the motor, a control unit configured to control an output voltage from the medium-voltage inverter, and an output voltage measuring unit configured to measure counter electromotive force data of the motor including a voltage and a frequency of the counter electromotive force, and transmitting it to the control unit. The control unit generates the output voltage based on the measured counter electromotive force data to re-drive the motor when the output voltage measuring unit completes the measurement of the counter electromotive force data.
Claims8
A system for controlling a medium-voltage inverter, wherein the system comprises:
- a motor;
- a medium-voltage inverter driving the motor;
- a control unit configured to control an output voltage from the medium-voltage inverter;
- and
- an output voltage measuring unit configured to measure counter electromotive force data of the motor comprising a voltage and a frequency of the counter electromotive force, and transmitting the counter electromotive force data to the control unit,
- wherein the control unit generates the output voltage based on the measured counter electromotive force data to re-drive the motor when the output voltage measuring unit completes the measurement of the counter electromotive force data,
- wherein when the output voltage measuring unit completes the measurement of the counter electromotive force data, the control unit generates the output voltage based on the measured counter electromotive force data to re-drive the motor, and
- wherein the output voltage has a magnitude and a frequency equal to the voltage and the frequency, respectively, and is generated in the same phase as the counter electromotive force.
A method for controlling a medium-voltage inverter performed in a system comprising a motor and a medium-voltage inverter driving the motor, the method comprising:
- measuring, by an output voltage measuring unit electrically connected to the motor, counter electromotive force data of the motor comprising a voltage and a frequency of the counter electromotive force;
- re-driving, by the medium-voltage inverter, the motor based on the measured counter electromotive force data when the measurement of the counter electromotive force data is completed;
- and
- increasing the magnitude of the output voltage from the medium-voltage inverter,
- wherein in the measuring the counter electromotive force of the motor, the output voltage has a magnitude and a frequency equal to the voltage and the frequency, respectively, and is generated in the same phase as the counter electromotive force.
Dependencies are inferred from the claim text.