1kW, 2000–4500rpm Ferrite PMSM drive: Comprehensive characterization and two sensorless control options

An optimal design of internal Ferrite permanent magnet motor with embedded key FEM verification is presented with the scope to increase the efficiency of the small power motors without to use the expensive, rare earth permanent magnets. Two internal flux concentration topologies are analyzed and the geometric dimensions and performances are presented for three cases, all at 1kW rated power at 4500rpm rated speed. The 6/8 poles spoke PMSM prototype was build and test results prove an efficiency larger than 88% for a large load range. Two sensorless control methods based on active flux observer are presented with the key simulation results including acceleration, speed reversal, loading and unloading speed response.

[1]  Sung-Il Kim,et al.  Characteristics comparison of a conventional and modified spoke-type ferrite magnet motor for traction drives of low-speed electric vehicles , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).

[2]  F. Blaabjerg,et al.  Active-flux-based, V/f-with-stabilizing-loops versus sensorless vector control of IPMSM Drives , 2011, 2011 IEEE International Symposium on Industrial Electronics.

[3]  Shigeo Morimoto,et al.  Experimental Evaluation of a Rare-Earth-Free PMASynRM With Ferrite Magnets for Automotive Applications , 2014, IEEE Transactions on Industrial Electronics.

[4]  Juha J. Pyrhönen,et al.  Performance of Low-Cost Permanent Magnet Material in PM Synchronous Machines , 2013, IEEE Transactions on Industrial Electronics.

[5]  I. Boldea,et al.  Active Flux Concept for Motion-Sensorless Unified AC Drives , 2008, IEEE Transactions on Power Electronics.

[6]  J.R. Cardoso,et al.  Axial flux concentration technique applied to the design of permanent magnet motors: theoretical aspects and their numerical and experimental validation , 2005, IEEE International Conference on Electric Machines and Drives, 2005..

[7]  F. Blaabjerg,et al.  A sensorless, stable V/f control method for permanent-magnet synchronous motor drives , 2002, APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335).

[8]  N. Bianchi,et al.  Magnetic Loading of Fractional-Slot Three-Phase PM Motors With Nonoverlapped Coils , 2008, IEEE Transactions on Industry Applications.

[9]  Dan M. Ionel,et al.  Design optimization of spoke-type ferrite magnet machines by combined design of experiments and differential evolution algorithms , 2013, 2013 International Electric Machines & Drives Conference.

[10]  L. Tutelea,et al.  Hybrid analytical/FEM optimization design of SPMSM for refrigerator compressor loads , 2011, International Aegean Conference on Electrical Machines and Power Electronics and Electromotion, Joint Conference.