Title :
High performance IPMSM drives without rotational position sensors using reduced-order EKF
Author :
Kim, Yoon-Ho ; Kook, Yoon-Sang
Author_Institution :
Dept. of Electr. Eng., Chung-Ang Univ., Seoul, South Korea
fDate :
12/1/1999 12:00:00 AM
Abstract :
An extended Kalman filter (EKF) based approach for position sensor elimination in interior permanent magnet synchronous motor (IPMSM) drives is presented in this paper. The EKF is capable of estimating system parameters and state variables for the IPMSM by eliminating virtually all influences of structural noises in the vector control scheme. This paper presents a design method of a reduced-order EKF. Position and angular speed of the rotor are obtained through the reduced-order EKF only by measuring stator currents. Also, due to an angle modification scheme with error tracking, the sensorless drive system is robust to parameter variations. Simulation and experimental results are provided to verify the proposed approach based on the reduced-order EKF
Keywords :
Kalman filters; angular velocity control; control system analysis; control system synthesis; machine testing; machine theory; machine vector control; parameter estimation; permanent magnet motors; position control; robust control; rotors; stators; synchronous motor drives; angle modification scheme; control design; control performance; control simulation; error tracking; interior permanent magnet synchronous motor drives; parameter variations robustness; position sensorless control; reduced-order extended Kalman filter; rotor angular speed; rotor position; state variables; state variables estimation; system parameters estimation; vector control scheme; Current measurement; Design methodology; Machine vector control; Magnetic sensors; Parameter estimation; Permanent magnet motors; Position measurement; State estimation; Stators; Velocity measurement;
Journal_Title :
Energy Conversion, IEEE Transactions on
