Model based angle compensation method for sensorless control of a wide range high speed PMSM

The position angle is very important in the control loop of electrical machines. Position error presence has an influence on the current control precision and on the efficiency of the system. This paper presents a PLL based position estimation and angle compensation method. A comprehension study of the inverter acquisition and interruption system and their effects on sensorless control is also presented. This study concerns machines operating through a wide speed range which makes them more sensitive to acquisition filters. It is dedicated to electrification applications in automotive field where robust control is needed to maintain the stability of the system. It is applied to the control of a Permanent Magnet Synchronous Machine operating from 5 krpm to 185 krpm. Simulations and experiments are presented to validate the proposed study.