Six-phase Axial Flux Permanent Magnet generator model: Simulation and experimental validation

This paper presents a Finite Element Analysis (FEA) of a 24kW six-phase Axial Flux Permanent Magnet Synchronous Machine (6AFPMSM) and its validation through experimental tests for fault tolerant generation purposes. The presented topology contains a high pole number and is suited for wind turbines applications in direct-drive or hybrid one-step geared systems. Simulations with Finite Element Method (FEM) are performed in order to validate the performances of the proposed model. The 24kW prototype of the generator has been built and experimental data are compared with simulations ones in healthy and stator faulted conditions. In order to compare the behavior of the machine in faulty mode, two configurations of the stator are analyzed: double star and single star connections.

[1]  F. Crescimbini,et al.  Experimental study on reducing cogging torque and core power loss in axial-flux permanent-magnet machines with slotted winding , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[2]  F. Profumo,et al.  A comparison between the axial flux and the radial flux structures for PM synchronous motors , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[3]  Javier Contreras,et al.  Modeling the Impact of a Wind Power Producer as a Price-Maker , 2014, IEEE Transactions on Power Systems.

[4]  Thomas A. Lipo,et al.  A comparison of power density for axial flux machines based on general purpose sizing equations , 1999 .

[5]  L. Parsa,et al.  On advantages of multi-phase machines , 2005, 31st Annual Conference of IEEE Industrial Electronics Society, 2005. IECON 2005..

[6]  Aki Mikkola,et al.  Direct-drive permanent magnet generators for high-power wind turbines: benefits and limiting factors , 2012 .

[7]  F. Caricchi,et al.  Fractional-Slot Concentrated-Winding Axial-Flux Permanent-Magnet Machine With Core-Wound Coils , 2012, IEEE Transactions on Industry Applications.

[8]  F. Crescimbini,et al.  Experimental study on reducing cogging torque and core power loss in axial-flux permanent-magnet machines with slotted winding , 2002 .

[9]  M.J. Kamper,et al.  Optimal design of a coreless stator axial flux permanent-magnet generator , 2005, IEEE Transactions on Magnetics.

[10]  T.A. Lipo,et al.  A new axial flux surface mounted permanent magnet machine capable of field control , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[11]  Emil Levi,et al.  Multiphase Electric Machines for Variable-Speed Applications , 2008, IEEE Transactions on Industrial Electronics.

[12]  Nobuyuki Matsui,et al.  A Simple Nonlinear Magnetic Analysis for Axial-Flux Permanent-Magnet Machines , 2010, IEEE Transactions on Industrial Electronics.

[13]  J. Pyrhonen,et al.  Performance comparison between low-speed axial-flux and radial-flux permanent-magnet machines including mechanical constraints , 2005, IEEE International Conference on Electric Machines and Drives, 2005..

[14]  H. Polinder,et al.  Comparison of direct-drive and geared generator concepts for wind turbines , 2005, IEEE International Conference on Electric Machines and Drives, 2005..

[15]  Fabrizio Marignetti,et al.  Electromagnetic Analysis of Axial-Flux Permanent Magnet Synchronous Machines With Fractional Windings With Experimental Validation , 2012, IEEE Transactions on Industrial Electronics.

[16]  Z.Q. Zhu,et al.  Minimization of Cogging Torque in Axial-Flux Permanent-Magnet Machines: Design Concepts , 2007, IEEE Transactions on Magnetics.

[17]  Matteo Felice Iacchetti,et al.  Axial Flux PM Machines With Concentrated Armature Windings: Design Analysis and Test Validation of Wind Energy Generators , 2011, IEEE Transactions on Industrial Electronics.