Influence of the rotor angle precision in control of interior permanent magnet synchronous machine drives and improvement method using sensorless estimator with Hall sensors. Issue 3 (25th January 2019)

• Record Type: Journal Article
• Authors: Cortajarena, José Antonio; García, Sergio; Cortajarena, Jon; Barambones, Oscar; Alkorta, Patxi
• Is Part Of: IET power electronics. Volume 12:Issue 3(2019)
• Page Start: 383
• Page End: 391
• Publication Date: 2019-01-25
• Subjects: synchronous motor drives -- permanent magnet motors -- rotors -- angular measurement -- sensorless machine control; rotor angle precision -- interior permanent magnet synchronous machine drives -- sensorless estimator -- Hall sensors -- internal permanent magnet motor -- low rotor angle resolution sensors -- torque error -- rated torque -- rotor angle resolution -- rotor angle measurement -- synchronous rotating reference system; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2018.5143
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : This document studies torque degradation of an internal permanent magnet motor due to an incorrect rotor angle measurement when low rotor angle resolution sensors are used. The performance of the control with different rotor angle resolution is also analysed to determine the torque error due to the use of an incorrect synchronous rotating reference system. To address torque degradation due to the low resolution of Hall sensors, a new method of estimating the rotor angle is proposed that incorporates the information from Hall sensors. In this way, good resolution is achieved, allowing the machine to be controlled over a wide speed range even with rated torque. This method is validated through simulations and real experiments.