PMSM sensorless control using back-EMF based position and speed estimation

Muhammad Azfizan , Rahim (2014) PMSM sensorless control using back-EMF based position and speed estimation. Project Report. UTeM. (Submitted)

Text PMSM SENSORLESS CONTROL USING BACK-EMF BASED POSITION AND SPEED ESTIMATION 24pages.pdf Download (751kB)

Abstract

This report presents the progress report on research for “PMSM Sensorless Control Using Back-EMF Based Position and Speed Estimation”. The objectives is to model and simulate a position and speed estimator based on back-EMF sensorless control on PMSM and to analyze the performance of sensorless operation related to the back-EMF of the PMSM. These motor drives are very essential for industrial applications. In the applications of PMSM drive, the rotor position signal is obtained from a mechanical sensor that will reduce the reliability of the system and added the cost of the drives. Therefore, a strong desire arises in the alternative of PMSM sensorless control, where the estimators are employed to provide the feedback data required by the control system. Because of that, the development position and speed estimation based on back-EMF sensorless control for PMSM is performed. The performance of the back-EMF based sensorless vector control is mainly determined by the sensorless algorithms to relate to the position and speed estimation. The appropriate controller use in this project such as vector control, hysteresis current controller and PI controller. In this project, sensorless control approach using back-EMF method. The overall system is simulated by using SIMULINK/MATLAB software. This case study presents a position and speed estimation method based on back-EMF sensorless control by measuring the phase currents and voltages of the PMSM drive estimator to get the exact position and speed estimator. On the other hand, the sensorless control method provides satisfactory efficiency when use in PMSM drive.

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