Embedded Flux Linkage Estimator Based Sensorless Field Oriented Control of A PMSM

Abstract

Precise speed control combined with good transient performance and high efficiency makes Permanent Magnet synchronous motors (PMSM) an interesting solution for a wide range of industrial and technological applications. Different techniques have been developed for rotor position estimation in the direction of eliminating Mechanical or optical position sensors to achieve a better dynamic response and accurate control. This paper presents a new Flux linkage-based speed and position estimation technique that experimentally improves the performance of the PMSM sensor-less drive system. Complete design methodology with detailed design rules is provided. The proposed technique is verified through experimental results and implemented using Digital Signal Processor (DSP).