Title :
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
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;
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
DOI :
10.1109/EPE.2007.4417720
