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To obtain a wide-speed range control from a standstill to a high speed region, combining the approaches - LF (Low Frequency) signal injection and EKF (Extended Kalman Filter) in sensorless PMSM drive is proposed in this paper. The LF signal injection algorithm is applied to the startup and low-speed mode for the SPMSM; then it will transfer to the medium or high speed mode using the EKF algorithm...
Among the sensorless PMSM speed control algorithms, the non-model based approach, such as high frequency (HF) signal injection (HFSI), is usually taken as to estimate the rotor position of PMSM at standstill and very low speed condition, but the model based approach, such as extended Kalman filter (EKF) is suitable to the low/medium/high speed condition for PMSM drive. Therefore, to obtain a wide-speed...
In this study, we propose a digital hardware implementation of a speed controller for a sensorless permanent magnet synchronous motor (PMSM) drive. First, the extended Kalman filter (EKF) is used to estimate the rotor flux angle (FA) and rotor speed. The estimated rotor FA is sent back to the current loop for vector control and the estimated rotor speed is fed back into the speed loop for closed-loop...
Based on the extended Kalman filter (EKF) estimator and adaptive fuzzy controller (AFC), the design of a sensorless speed control IP (Intellectual Property) for PMSM (Permanent Magnet Synchronous Motor) drive is presented in this paper. Firstly, the mathematical model of PMSM is derived, and the vector control is built up. Secondly, the rotor flux angle (FA) and rotor speed, which are estimated by...
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