Design, Prototyping, and Analysis of a Novel Modular Permanent-Magnet Transverse Flux Disk Generator

This paper presents the design, prototyping, and analysis of a novel modular transverse flux permanent-magnet disk generator. The disk-shaped structure simplifies the construction procedure by using laminated steel sheets. To reduce output harmonics, the excitation of the generator is done by circular flat shaped Nd-Fe-B permanent magnets. First, a typical low power generator is designed, and then partially optimized. The optimization objective is to find an inner radius which maximizes the power factor, the output power to mass ratio, and the efficiency. The generator equivalent circuit parameters are computed by three-dimensional finite-element analyses. The simulation results show that the power factor of the proposed structure is considerably greater than the power factor previously reported for other transverse flux permanent-magnet generator structures. To verify the simulation results, a prototype has been constructed and tested. The experimental results are in good agreement with simulation results.

[1]  Do-Hyun Kang,et al.  Determination of Parameters Considering Magnetic Nonlinearity in Solid Core Transverse Flux Linear Motor for Dynamic Simulation , 2008, IEEE Transactions on Magnetics.

[2]  Jacek F. Gieras.  Performance Characteristics of a Permanent Magnet Transverse Flux Generator , 2005 .

[3]  Jacek F. Gieras,et al.  Permanent magnet motor technology : design and applications , 1996 .

[4]  Jacek F. Gieras,et al.  Axial Flux Permanent Magnet Brushless Machines , 2005 .

[5]  H. Weh.  New Permanent Magnet Excited Synchronous Machine with High Efficiency at Low Speeds , 1988 .

[6]  Yasuaki Aoyama,et al.  Simple modeling and prototype experiments for a new high-thrust, low-speed permanent magnet disk motor , 2009 .

[7]  M. Gyimesi,et al.  Inductance computation by incremental finite element analysis , 1999 .

[8]  J.F. Gieras.  Performance Characteristics of a Transverse Flux Generator , 2005, IEEE International Conference on Electric Machines and Drives, 2005..

[9]  Do-Hyun Kang,et al.  Tooth Shape Optimization for Cogging Torque Reduction of Transverse Flux Rotary Motor Using Design of Experiment and Response Surface Methodology , 2007, IEEE Transactions on Magnetics.

[10]  Juliette Soulard,et al.  Performance evaluation of a novel transverse flux generator with 3D finite element analysis , 2009, 2009 International Conference on Electrical Machines and Systems.

[11]  Dmitry Svechkarenko.  On analytical modeling and design of a novel transverse flux generator for offshore wind turbines , 2007 .

[12]  W. Marsden.  I and J , 2012 .

[13]  Maxime R. Dubois,et al.  Optimized Permanent Magnet Generator Topologies for Direct-Drive Wind Turbines , 2004 .

[14]  Petri Lampola,et al.  Directly driven, low-speed permanent-magnet generators for wind power applications , 2000 .

[15]  G Patterson,et al.  Simple Modeling and Prototype Experiments for a New High-Thrust Low-Speed Permanent-Magnet Disk Motor , 2009, IEEE Transactions on Industry Applications.

[16]  S.M. Hosseini,et al.  Design, Prototyping, and Analysis of a Low Cost Axial-Flux Coreless Permanent-Magnet Generator , 2008, IEEE Transactions on Magnetics.

[17]  S. M. Abu Sharkh,et al.  The problem of power factor in VRPM (transverse-flux) machines , 1997 .

[18]  Jian Guo Zhu,et al.  Development of a PM transverse flux motor with soft magnetic composite core , 2006, IEEE Transactions on Energy Conversion.