17980893. SENSORLESS INDUCTION MOTOR SYSTEM AND CONTROL METHOD THEREOF simplified abstract (Hyundai Motor Company)
Contents
SENSORLESS INDUCTION MOTOR SYSTEM AND CONTROL METHOD THEREOF
Organization Name
Inventor(s)
Chang Seok You of Hwaseong-si, Gyeonggi-do (KR)
Hyo Jeong Lee of Uiwang-si (KR)
SENSORLESS INDUCTION MOTOR SYSTEM AND CONTROL METHOD THEREOF - A simplified explanation of the abstract
This abstract first appeared for US patent application 17980893 titled 'SENSORLESS INDUCTION MOTOR SYSTEM AND CONTROL METHOD THEREOF
Simplified Explanation
The abstract describes a sensorless induction motor system and a method of controlling it.
- The system includes a control unit that applies sampling pulse voltages to the stator phases of the motor.
- The control unit estimates the position of the rotor using a first rotor position vector that has the greatest deviation in the induced current.
- It then compares the induced current deviation of a second rotor position vector with that of the first rotor position vector.
- The control unit determines whether or not the permanent magnets of the motor are demagnetized based on this comparison.
Potential applications of this technology:
- Industrial automation: This sensorless induction motor system can be used in various industrial automation applications, such as conveyor belts, pumps, and fans.
- Electric vehicles: The system can be implemented in electric vehicle propulsion systems to improve motor control and efficiency.
- Renewable energy: It can be used in wind turbines and solar tracking systems to optimize power generation.
Problems solved by this technology:
- Eliminates the need for additional sensors: Traditional induction motor control systems require position sensors to determine the rotor position. This sensorless system eliminates the need for such sensors, reducing complexity and cost.
- Detects demagnetization of permanent magnets: The system can detect if the permanent magnets in the motor are demagnetized, allowing for timely maintenance and preventing motor failure.
Benefits of this technology:
- Cost-effective: By eliminating the need for additional sensors, the system reduces the overall cost of the motor control system.
- Improved reliability: The ability to detect demagnetization of permanent magnets allows for proactive maintenance, preventing unexpected motor failures.
- Enhanced efficiency: Accurate rotor position estimation improves motor control, leading to increased efficiency and performance.
Original Abstract Submitted
A sensorless induction motor system includes a control unit which applies a plurality of sampling pulse voltages to phases of the stator, estimates the position of a rotor through a first rotor position vector having the greatest deviation in an induced current, compares an induced current deviation of a second rotor position vector having a second greatest deviation of deviation of the induced current with that of a first rotor position vector, and determines whether or not permanent magnets are demagnetized; and a method of controlling the sensorless induction motor system.