Sensorless position estimation and control of permanent-magnet synchronous motors using a saturation model. Issue 3 (3rd March 2016)

• Record Type: Journal Article
• Authors: Jebai, Al Kassem; Malrait, François; Martin, Philippe; Rouchon, Pierre
• Is Part Of: International journal of control. Volume 89:Issue 3(2016)
• Page Start: 535
• Page End: 549
• Publication Date: 2016-03-03
• Subjects: Permanent-magnet synchronous motor (PMSM) -- sensorless control -- signal injection -- magnetic saturation -- energy-based modeling -- second-order averaging; Automatic control -- Periodicals; Electronic journals; 629.8
• DOI: 10.1080/00207179.2015.1084049
• Languages: English
• ISSNs: 0020-7179

Abstract

ABSTRACT: Sensorless control of permanent-magnet synchronous motors at low velocity remains a challenging task. A now well-established method consists of injecting a high-frequency signal and using the rotor saliency, both geometric and magnetic-saturation induced. This paper proposes a clear and original analysis based on second-order averaging of how to recover the position information from signal injection; this analysis blends well with a general model of magnetic saturation. It also proposes a simple parametric model of the saturated motor, based on an energy function which simply encompasses saturation and cross-saturation effects. Experimental results on a surface-mounted motor and an interior magnet motor illustrate the relevance of the approach.