US Patent Application 17972726. SENSORLESS INDUCTION MOTOR SYSTEM AND CONTROL METHOD THEREOF simplified abstract
Contents
SENSORLESS INDUCTION MOTOR SYSTEM AND CONTROL METHOD THEREOF
Organization Name
Inventor(s)
Chang Seok You of Hwaseong-si (KR)
SENSORLESS INDUCTION MOTOR SYSTEM AND CONTROL METHOD THEREOF - A simplified explanation of the abstract
This abstract first appeared for US patent application 17972726 titled 'SENSORLESS INDUCTION MOTOR SYSTEM AND CONTROL METHOD THEREOF
Simplified Explanation
The patent application describes a sensorless induction motor system and a control method for the motor.
- The system includes a motor with a stator and a rotor, and a controller to control the motor's operation.
- The stator has windings forming multiple phases, and the rotor has a permanent magnet.
- The controller controls the voltage applied to each phase of the stator to operate the motor.
- The controller also predicts the time required for the rotor to stop when the motor is commanded to stop.
- After the predicted stop waiting time, the controller applies a pulse voltage to each phase of the stator multiple times.
- The controller determines that the rotor has stopped when the minimum deviation value of an induced current is equal to or greater than a reference value.
Original Abstract Submitted
A sensorless induction motor system and a control method thereof includes a motor including a stator including windings forming a plurality of phases and a rotor including a permanent magnet, and a controller configured to control operation of the motor by controlling a voltage applied to each phase of the stator, to set a stop waiting time predicted to be necessary for the rotor to stop when the motor is controlled to stop, to apply a pulse voltage to each phase of the stator a plurality of times after the stop waiting time, and to conclude that the rotor has stopped when a minimum deviation value of an induced current is equal to or greater than a reference value.
