Title :
Demagnetization Control for Reliable Flux Weakening Control in PM Synchronous Machine
Author :
Sarikhani, Ali ; Mohammed, Osama A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Florida Int. Univ., Miami, FL, USA
Abstract :
A process for permanent magnet (PM) demagnetization control for optimal and reliable flux weakening control in permanent magnet synchronous machines (PMSM) is presented. A physics-based model was developed to estimate the magnetic flux operating point of the PM poles during the operation of PMSM. The model is enabled to dynamically estimate the average and the partial PM demagnetization due to reverse armature field as well as the PM temperature rise. The model is a function of physical geometry and material of the PMSM, physics of demagnetization, and the ambient temperature. The demagnetization assessment and control is verified on a V-type PMSM using the modified FE-based coupled thermal-field-circuit phase variable model and the time step FE analysis.
Keywords :
demagnetisation; finite element analysis; permanent magnet machines; synchronous machines; PM poles; PM synchronous machine; PM temperature rise; PMSM material; PMSM operation; V-type PMSM; ambient temperature; demagnetization assessment; demagnetization physics; flux weakening control reliability; magnetic flux operating point; modified FE-based coupled thermal field circuit phase variable model; optimal flux weakening control; partial PM demagnetization; permanent magnet demagnetization control; permanent magnet synchronous machines; physical geometry; physics-based model; reverse armature field; time step FE analysis; Demagnetization; Finite element methods; Magnetic flux; Permanent magnet machines; Demagnetization assessment; demagnetization control; finite element (FE) analysis; flux weakening control; permanent magnet synchronous machine (PMSM);
Journal_Title :
Energy Conversion, IEEE Transactions on
DOI :
10.1109/TEC.2012.2217968
