17980893. SENSORLESS INDUCTION MOTOR SYSTEM AND CONTROL METHOD THEREOF simplified abstract (Kia Corporation)

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SENSORLESS INDUCTION MOTOR SYSTEM AND CONTROL METHOD THEREOF

Organization Name

Kia Corporation

Inventor(s)

Sung Do Kim of Seoul (KR)

Chang Seok You of Hwaseong-si, Gyeonggi-do (KR)

Hyo Jeong Lee of Uiwang-si (KR)

Min Su Kang of Paju-si (KR)

Joo Yeon Kim of Seoul (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. Here is a simplified explanation of the abstract:

  • The sensorless induction motor system includes a control unit that applies sampling pulse voltages to the stator phases.
  • The control unit estimates the position of the rotor using a 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 the first rotor position vector.
  • The system determines whether or not the permanent magnets in 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 where precise control of motor speed and position is required.
  • Electric vehicles: The system can be implemented in electric vehicles to improve motor efficiency and performance without the need for additional sensors.
  • Renewable energy systems: It can be used in wind turbines and solar tracking systems to optimize power generation and improve overall system efficiency.

Problems solved by this technology:

  • Eliminates the need for position sensors: Traditional induction motor control systems require position sensors to accurately control the motor. This technology eliminates the need for such sensors, reducing complexity and cost.
  • Detects demagnetization of permanent magnets: By comparing the induced current deviations, the system can detect if the permanent magnets in the motor are demagnetized. This allows for timely maintenance and replacement, preventing motor failure.

Benefits of this technology:

  • Cost-effective: By eliminating the need for position sensors, the system reduces the overall cost of the motor control system.
  • Improved reliability: The ability to detect demagnetization of permanent magnets allows for timely maintenance, preventing motor failure and improving overall system reliability.
  • Enhanced efficiency: The sensorless control system optimizes motor performance, leading to improved energy efficiency and reduced power consumption.


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.

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