Electromagnetic Design and Analysis of a Novel Magnetic-Gear-Integrated Wind Power Generator Using Time-Stepping Finite Element Method

This paper presents a novel permanent-magnet (PM) machine for wind power generation. In order to achieve high power/torque density as well as get rid of the nuisances aroused by the mechanical gearbox, a coaxial magnetic gear (CMG) is engaged. Difierent from the existing integrated machine in which armature windings are deployed in the inner bore of the CMG as an individual part, stator windings are directly inserted among the slots between the ferromagnetic segments in this proposed machine. Thus, it can ofier several merits, such as simpler mechanical structure, better utilization of PM materials and lower manufacturing cost. Moreover, by artfully designing the connection of the armature windings, the electromagnetic coupling between the windings and the outer rotor PMs can be dramatically decreased, and the electromechanical energy conversion can be achieved by the fleld interaction between the inner rotor PMs and the armature windings.

[1]  C. Nayar,et al.  Design and finite-element analysis of an outer-rotor permanent-magnet generator for directly coupled wind turbines , 2000 .

[2]  Chunhua Liu,et al.  Design of a Magnetic-Geared Outer-Rotor Permanent-Magnet Brushless Motor for Electric Vehicles , 2007, IEEE Transactions on Magnetics.

[3]  K.T. Chau,et al.  A Magnetic-Geared Outer-Rotor Permanent-Magnet Brushless Machine for Wind Power Generation , 2007, 2007 IEEE Industry Applications Annual Meeting.

[4]  K. T. Chau,et al.  Design and analysis of a magnetic-geared electronic-continuously variable transmission system using finite element method , 2010 .

[5]  David A. Torrey,et al.  Switched reluctance generators and their control , 2002, IEEE Trans. Ind. Electron..

[6]  Q. H. Liu.  A NON-SPURIOUS VECTOR SPECTRAL ELEMENT METHOD FOR MAXWELL’S EQUATIONS , 2009 .

[7]  Shuangxia Niu,et al.  Design and Control of a New Double-Stator Cup-Rotor Permanent-Magnet Machine for Wind Power Generation , 2007, IEEE Transactions on Magnetics.

[8]  Ying Fan,et al.  A new three-phase doubly salient permanent magnet machine for wind power generation , 2006, IEEE Transactions on Industry Applications.

[9]  Xue Wei Ping,et al.  The Factorized Sparse Approximate Inverse Preconditioned Conjugate Gradient Algorithm for Finite Element Analysis of Scattering Problems , 2009 .

[10]  Wenlong Li,et al.  A Novel Coaxial Magnetic Gear Using Bulk HTS for Industrial Applications , 2010, IEEE Transactions on Applied Superconductivity.

[11]  Linni Jian,et al.  A Coaxial Magnetic Gear With Halbach Permanent-Magnet Arrays , 2010, IEEE Transactions on Energy Conversion.

[12]  Xiao-Wei Shi,et al.  An Efficient Approach for Multifrontal Algorithm to Solve Non-Positive-Definite Finite Element Equations in Electromagnetic Problems , 2009 .

[13]  Birgitte Bak-Jensen,et al.  Windfarm Generation Assessment for Reliability Analysis of Power Systems , 2007 .

[14]  Noureddine Takorabet,et al.  Transient Finite Element Analysis of Induction Machines with Stator Winding Turn Fault , 2009 .

[15]  K. T. Chau,et al.  ANALYTICAL CALCULATION OF MAGNETIC FIELD DISTRIBUTION IN COAXIAL MAGNETIC GEARS , 2009 .

[16]  Din Ping Tsai,et al.  A New Type of Optical Antenna: Plasmonics Nanoshell Bowtie Antenna with Dielectric Hole , 2010 .

[17]  Kais Atallah,et al.  Design, analysis and realisation of a high-performance magnetic gear , 2004 .

[18]  Shang Deshun.  Doubly Fed Induction Generator for Wind Turbines , 2003 .

[19]  K. Chau,et al.  Design and Control of a PM Brushless Hybrid Generator for Wind Power Application , 2006, INTERMAG 2006 - IEEE International Magnetics Conference.

[20]  Romain Ravaud,et al.  Comparison of the Coulombian and Amperian Current Models for Calculating the Magnetic Field Produced by Radially Magnetized Arc-Shaped Permanent Magnets , 2009 .

[21]  Anders Grauers,et al.  Efficiency of three wind energy generator systems , 1996 .

[22]  Rachid Ibtiouen,et al.  EXPERIMENTAL INVESTIGATION AND OPTIMIZATION OF PERMANENT MAGNET MOTOR BASED ON COUPLING BOUNDARY ELEMENT METHOD WITH PERMEANCES NETWORK , 2011 .

[23]  K.T. Chau,et al.  A novel three-phase doubly salient permanent magnet machine for wind power generation , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..

[24]  Mohammad Hakkak,et al.  Controllable Waveguide Bandstop Filter Using S-Shaped Ring Resonators , 2010 .

[25]  Jawad Faiz,et al.  TIME STEPPING FINITE ELEMENT ANALYSIS OF BROKEN BARS FAULT IN A THREE-PHASE SQUIRREL-CAGE INDUCTION MOTOR , 2007 .

[26]  B. Ebrahimi,et al.  MIXED FAULT DIAGNOSIS IN THREE-PHASE SQUIRREL-CAGE INDUCTION MOTOR USING ANALYSIS OF AIR-GAP MAGNETIC FIELD , 2006 .

[27]  R. W. De Doncker,et al.  Doubly fed induction generator systems for wind turbines , 2002 .

[28]  Jean-Francois Brudny,et al.  DISTINCTION OF TOOTHING AND SATURATION EFFECTS ON MAGNETIC NOISE OF INDUCTION MOTORS , 2011 .