Modelling magnetic saturation effects in IPMSMs for use in sensorless saliency based methods

Author

Matzen, Torben N. ; Rasmussen, Peter O.

Author_Institution

Aalborg Univ., Aalborg

fYear

2007

fDate

2-5 Sept. 2007

Firstpage

1

Lastpage

8

Abstract

A model of the IPMSM with magnetic saturation is presented. The model is based on flux linkage data from a finite element model where the anhysteretic BH curve is included in the material properties of the stator and rotor. The simulated flux linkage data are used in a modified IPMSM dq model using two look up tables. Using the modified IPMSM model with the flux linkage data, simulation results are obtained and corn- paired with experimental results. Both simulation and experimental results reveals a large but similar significant differential inductance variation. The inductance variation may influence sensorless saliency based methods which is based on the inductance in the d- and q-axis of the machine. The post processing of the results gave rise to a sensorless position estimation method based on principle component analysis (PCA).

Keywords

finite element analysis; permanent magnet motors; rotors; stators; synchronous motors; table lookup; IPMSM; PCA; differential inductance variation; finite element model; flux linkage data; lookup tables; magnetic saturation effects; material properties; position estimation method; principle component analysis; rotor; sensorless saliency based methods; stator; Couplings; Finite element methods; Inductance; Magnetic flux; Mathematical model; Principal component analysis; Rotors; Saturation magnetization; Stators; Table lookup; Modelling; Permanent magnet motor; Sensorless control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications, 2007 European Conference on

Conference_Location

Aalborg

Print_ISBN

978-92-75815-10-8

Electronic_ISBN

978-92-75815-10-8

Type

conf

DOI

10.1109/EPE.2007.4417720

Filename

4417720