Comparison of permanent magnet generators for a very low speed renewable energy application

This paper describes the design of a very low speed direct-drive brushless permanent magnet generator for use in a Bristol cylinder device which is used for generation of electrical energy from sea waves. It studies both air-gap wound and slotted stator types of machine. It studies the design of a scaled down machine using air-gap windings then scales the machine up to obtain a full-scale generator. A comparison is made to a slotted alternative. The performance is studied in steady state terms.

[1]  G. Payne,et al.  Guidance for the experimental tank testing of wave energy converters , 2009 .

[2]  N. J. Baker,et al.  Direct drive wave energy converters , 2001 .

[3]  M. Leijon,et al.  Design proposal of electrical system for linear generator wave power plants , 2009, 2009 35th Annual Conference of IEEE Industrial Electronics.

[4]  Paolo Boccotti,et al.  Wave Mechanics for Ocean Engineering , 2011 .

[5]  D. V. Evans,et al.  Submerged cylinder wave energy device: theory and experiment , 1979 .

[6]  David G. Dorrell,et al.  Design and operation of very slow-speed generators for a Bristol cylinder sea wave generating device , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).

[7]  Jens Peter Kofoed,et al.  Crest Level Optimization of the Multi Level Overtopping based Wave Energy Converter Seawave Slot-Cone Generator , 2005 .

[8]  P. McIver,et al.  Wave-power absorption by a line of submerged horizontal cylinders , 1995 .

[9]  Willie Jones.  Update - Ocean Power Catches a Wave , 2008, IEEE Spectrum.

[10]  Timothy J. E. Miller,et al.  Design of Brushless Permanent-Magnet Motors , 1994 .

[11]  M. Hughes,et al.  National-scale wave energy resource assessment for Australia , 2010 .

[12]  D. G. Dorrell,et al.  Control of a Bristol cylinder for wave energy generation , 2010, The 2010 International Power Electronics Conference - ECCE ASIA -.

[13]  C. Cossar,et al.  Comparison of High Pole Number Ultra-Low Speed Generator Designs Using Slotted and Air-Gap Windings , 2012, IEEE Transactions on Magnetics.

[14]  Kenneth Rhinefrank,et al.  Novel ocean energy permanent magnet linear generator buoy , 2006 .

[15]  António F.O. Falcão,et al.  Wave energy utilization: A review of the technologies , 2010 .

[16]  Rieghard Vermaak,et al.  Grid-connected VSC-HVDC wind farm system and control using permanent magnet induction generators , 2009, 2009 International Conference on Power Electronics and Drive Systems (PEDS).

[17]  David G. Dorrell,et al.  Analysis and Design Techniques Applied to Hybrid Vehicle Drive Machines—Assessment of Alternative IPM and Induction Motor Topologies , 2012, IEEE Transactions on Industrial Electronics.

[18]  G. Boyle.  Renewable Energy: Power for a Sustainable Future , 2012 .

[19]  A. Benalia,et al.  Ocean wave converters: State of the art and current status , 2010, 2010 IEEE International Energy Conference.

[20]  John R. Chaplin,et al.  Physical model tests of the anaconda wave energy converter , 1970 .

[21]  Z. Zhou,et al.  Permanent magnet generator control and electrical system configuration for Wave Dragon MW wave energy take-off system , 2008, 2008 IEEE International Symposium on Industrial Electronics.

[22]  Matthew Folley,et al.  The design of small seabed-mounted bottom-hinged wave energy converters , 2007 .

[23]  Kazumi Kurihara,et al.  Effects of cage-bars for stability of circumferentially magnetized permanent-magnet synchronous generators , 2010, 2010 International Conference on Electrical Machines and Systems.

[24]  David G. Dorrell.  Permanent magnet generators for renewable energy devices with wide speed range and pulsating power delivery , 2009, Int. J. Comput. Appl. Technol..

[25]  A. F. de O. Falcão,et al.  First-Generation Wave Power Plants: Current Status and R&D Requirements , 2004 .

[26]  Kathryn K. McCreight.  A Note on the Selection of Wave Spectra for Design Evaluation , 1998 .

[27]  H. Karmaker,et al.  Short-Circuit Analysis of Permanent-Magnet Generators , 2009, IEEE Transactions on Industry Applications.