Slot-Less Torus Solid-Rotor-Ringed Line-Start Axial-Flux Permanent-Magnet Motor

This paper presents the design, analysis, and prototyping of a novel axial-∞ux permanent-magnet (AFPM) motor capable of auto-starting. The preliminary design is a slot-less double-sided solid-rotor line-start AFPM motor with 4 poles for high torque density and stable rotation. One spaced raised ring was added to the inner radii of the rotor disc for smooth line-start motor. The design allows the motor to operate at both starting and synchronous speeds. The basic equations for the solid ring of the rotor of the proposed axial-∞ux permanent-magnet motor are presented. Non- symmetry of the designed motor led to its 3D time-stepping flnite element analysis (FEA) via ANSYS 13.0, which evaluated the design parameters and predicted the transient performance. The designed motor was fabricated and tested, the experimental results showing good agreement with FEA simulation results. The prototype motor showed high starting torque and good synchronization.

[1]  V. Honsinger.  Permanent Magnet Machines: Asychronous Operation , 1980, IEEE Transactions on Power Apparatus and Systems.

[2]  Chee-Mun. Ong,et al.  Dynamic simulation of electric machinery : using MATLAB/SIMULINK , 1997 .

[3]  Ebrahim Afjei,et al.  FEM ANALYSIS OF ANGULAR MISALIGNMENT FAULT IN SRM MAGNETOSTATIC CHARACTERISTICS , 2010 .

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

[5]  A. C. Smith,et al.  Steady-State Analysis of a Canned Line-Start PM Motor , 2011, IEEE Transactions on Magnetics.

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

[7]  N. Bianchi.  Electrical Machine Analysis Using Finite Elements , 2005 .

[8]  Alexander C. Smith,et al.  Line-Start Permanent-Magnet Machines Using a Canned Rotor , 2009 .

[9]  Guoqing Xu,et al.  Electromagnetic Design and Analysis of a Novel Magnetic-Gear-Integrated Wind Power Generator Using Time-Stepping Finite Element Method , 2011 .

[10]  Wenxiang Zhao,et al.  Quantitative comparison of flux-modulated interior permanent magnet machines with distributed windings and concentrated windings , 2012 .

[11]  Mulukutla S. Sarma.  Current-density distribution in solid-rotor induction motor , 1979 .

[12]  Nasrudin Abd Rahim,et al.  Axial-Flux Permanent-Magnet Motor Design for Electric Vehicle Direct Drive Using Sizing Equation and Finite Element Analysis , 2012 .

[13]  Andrew M. Knight,et al.  The design of high-efficiency line-start motors , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[14]  Byung-il Kwon,et al.  Practical Optimum Design Based on Magnetic Balance and Copper Loss Minimization for a Single-Phase Line Start PM Motor , 2011, IEEE Transactions on Magnetics.

[15]  Hew Wooi Ping,et al.  A comparison between the TORUS and AFIR axial-flux permanent-magnet machine using finite element analysis , 2011, 2011 IEEE International Electric Machines & Drives Conference (IEMDC).

[16]  J.X. Shen,et al.  A High-Performance Line-Start Permanent Magnet Synchronous Motor Amended From a Small Industrial Three-Phase Induction Motor , 2009, IEEE Transactions on Magnetics.

[17]  Nasrudin Abd Rahim,et al.  Improvement to performance of solid-rotor-ringed line-start axial-flux permanent-magnet motor , 2012 .

[18]  Fabio Giulii Capponi,et al.  No-Load Performance of Axial Flux Permanent Magnet Machines Mounting Magnetic Wedges , 2012, IEEE Transactions on Industrial Electronics.

[19]  P. Virtic,et al.  Line-Starting Three- and Single-Phase Interior Permanent Magnet Synchronous Motors—Direct Comparison to Induction Motors , 2008, IEEE Transactions on Magnetics.

[20]  Byung-il Kwon,et al.  Optimum Design of a Single-Phase Line-Start PM Motor Considering Efficiency, Maximum Torque, and Starting Torque , 2012, IEEE Transactions on Magnetics.

[21]  M. Gabsi,et al.  3-D Formal Resolution of Maxwell Equations for the Computation of the No-Load Flux in an Axial Flux Permanent-Magnet Synchronous Machine , 2012, IEEE Transactions on Magnetics.

[22]  Wenxiang Zhao,et al.  EXPERIMENTAL COMPARISON OF REMEDIAL SINGLE- CHANNEL OPERATIONS FOR REDUNDANT FLUX- SWITCHING PERMANENT-MAGNET MOTOR DRIVE , 2012 .

[23]  Sadegh Vaez-Zadeh,et al.  Effects of Magnetizing Inductance on Start-Up and Synchronization of Line-Start Permanent-Magnet Synchronous Motors , 2011, IEEE Transactions on Magnetics.

[24]  T. Miller.  Synchronization of Line-Start Permanent-Magnet AC Motors , 1984, IEEE Transactions on Power Apparatus and Systems.

[25]  E. A. Erdelyi,et al.  Aerospace Composite-Rotor Induction Motors , 1965, IEEE Transactions on Aerospace.

[26]  Bernd Ponick,et al.  Berechnung elektrischer Maschinen , 2007 .

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

[28]  Kai Wang,et al.  Advances on Single-Phase Line-Start High Efficiency Interior Permanent Magnet Motors , 2012, IEEE Transactions on Industrial Electronics.

[29]  Sadegh Vaez-Zadeh,et al.  Line start permanent magnet synchronous motors: Challenges and opportunities , 2009 .

[30]  F. Marignetti,et al.  Effect of Inclined Static Eccentricity Fault in Single Stator-Single Rotor Axial Flux Permanent Magnet Machines , 2012, IEEE Transactions on Magnetics.

[31]  Ebrahim Afjei,et al.  COMPARISON OF THREE NOVEL TYPES OF TWO- PHASE SWITCHED RELUCTANCE MOTORS USING FINITE ELEMENT METHOD , 2012 .

[32]  Mojtaba Mirsalim,et al.  Line-Start Permanent-Magnet Motors: Significant Improvements in Starting Torque, Synchronization, and Steady-State Performance , 2010, IEEE Transactions on Magnetics.

[33]  Byeong-Hwa Lee,et al.  Optimum Design Criteria for Maximum Torque and Efficiency of a Line-Start Permanent-Magnet Motor Using Response Surface Methodology and Finite Element Method , 2012, IEEE Transactions on Magnetics.

[34]  Mojtaba Mirsalim,et al.  Analytic modelling and dynamic analysis of pole-changing line-start permanent-magnet motors , 2012 .

[35]  Mulukutla S. Sarma,et al.  Solid-Rotor and Composite-Rotor Induction Machines , 1972, IEEE Transactions on Aerospace and Electronic Systems.

[36]  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).

[37]  M. Norhisam,et al.  Comparative Evaluation on Power-Speed Density of Portable Permanent Magnet Generators for Agricultural Application , 2012 .