1 results about "Rotor time constant" patented technology

The application provides a kind of asynchronous motor vector control method based on Kalman filtering, comprising the following operations: determining the initial value of the accurate estimation value of target torque current, target flux current and rotor time constant of the vector control of asynchronous motor;The following steps are cyclically executed: real-time acquisition of the voltage, current and speed of asynchronous motor;The real-time value of the stator torque current, stator flux current, stator torque voltage and stator flux voltage of asynchronous motor is calculated;Determine the rotor time constant identification measurement value based on the adaptive rate of the rotor time constant of asynchronous motor;Determine the rough estimation value of rotor time constant and Kalman filtering gain at the current time;Determine the accurate estimation value of rotor time constant at the current time;The vector control of asynchronous motor is based on the accurate estimation value of rotor time constant at the current time, target torque current, target flux current.The method of the application can effectively reduce the fluctuation of rotor time constant identification result while ensuring the identification accuracy.