2-D Analytical Subdomain Model for Hybrid Dual-Rotor Motor

Recently, dual-rotor motor (DRM) has emerged as an alternative for an induction motor (IM) or a permanent-magnet (PM) motor for electric vehicle application, due to its better drive performance and better torque density. This paper presents an analytical model for the hybrid IM-PM configuration of DRM. The analytical model can be used to predict induced bar currents, electromagnetic torque generated, and magnetic fields in various regions of the motor. The mentioned calculations are performed under steady-state conditions. The analytical method is developed using the subdomain model approach in 2-D polar coordinates. Appropriate governing equations along with boundary conditions across all the sub-domain regions of the DRM are employed to calculate the magnetic vector potential in all the regions. The developed analytical model has been validated with finite-element analysis for various operating conditions, and high accuracy has been achieved for all the results.

[1]  Akbar Rahideh,et al.  Analytical magnetic field distribution of slotless brushless PM motors. Part 2: Open-circuit field and torque calculations , 2012 .

[2]  Praveen Kumar,et al.  A Novel Steady-State Model of a Hybrid Dual Rotor Motor Comprising Electrical Equivalent Circuit and Performance Equations , 2014, IEEE Transactions on Magnetics.

[3]  K. Sawa,et al.  Analysis of armature circuit inductance of DC machines by FEM , 1985 .

[4]  Weidong Xiao,et al.  Four-Axis Vector-Controlled Dual-Rotor PMSM for Plug-in Electric Vehicles , 2015, IEEE Transactions on Industrial Electronics.

[5]  Z. Zhu,et al.  Eddy-current loss in the rotor magnets of permanent-magnet brushless machines having a fractional number of slots per pole , 2005, IEEE Transactions on Magnetics.

[6]  C.C. Chan,et al.  Electric vehicles charge forward , 2004, IEEE Power and Energy Magazine.

[7]  P. Virtic,et al.  Design Analysis and Experimental Validation of a Double Rotor Synchronous PM Machine Used for HEV , 2013, IEEE Transactions on Magnetics.

[8]  Sabine Himmel,et al.  Partial Differential Equations For Scientists And Engineers , 2016 .

[9]  P.T. Krein,et al.  Capabilities of finite element analysis and magnetic equivalent circuits for electrical machine analysis and design , 2008, 2008 IEEE Power Electronics Specialists Conference.

[10]  Thomas M. Jahns.  Torque Production in Permanent-Magnet Synchronous Motor Drives with Rectangular Current Excitation , 1984, IEEE Transactions on Industry Applications.

[11]  T.J.E. Miller,et al.  Back-EMF waveforms and core losses in brushless DC motors , 1994 .

[12]  Z. Zhu,et al.  Winding inductances of brushless machines with surface-mounted magnets , 1997, 1997 IEEE International Electric Machines and Drives Conference Record.

[13]  Cui Shu-mei,et al.  Research on power density improvement design of an HEV using induction machine based electrical variable transmission , 2008, 2008 IEEE Vehicle Power and Propulsion Conference.

[14]  Longya Xu,et al.  Multioperational Modes and Control Strategies of Dual-Mechanical-Port Machine for Hybrid Electrical Vehicles , 2007, IEEE Transactions on Industry Applications.

[15]  C. Espanet,et al.  Analytical Solution of the Magnetic Field in Permanent-Magnet Motors Taking Into Account Slotting Effect: No-Load Vector Potential and Flux Density Calculation , 2009, IEEE Transactions on Magnetics.

[16]  T. Lubin,et al.  Analytic Calculation of Eddy Currents in the Slots of Electrical Machines: Application to Cage Rotor Induction Motors , 2011, IEEE Transactions on Magnetics.

[17]  K. Atallah,et al.  Armature reaction field and winding inductances of slotless permanent-magnet brushless machines , 1998 .

[18]  John Lowry,et al.  Electric Vehicle Technology Explained , 2003 .

[19]  Yuan Cheng,et al.  The Study of the Operation Modes and Control Strategies of an Advanced Electromechanical Converter for Automobiles , 2007, IEEE Transactions on Magnetics.

[20]  Wei Hua,et al.  Electromagnetic Performance Analysis of Double-Rotor Stator Permanent Magnet Motor for Hybrid Electric Vehicle , 2012, IEEE Transactions on Magnetics.

[21]  Duane C. Hanselman,et al.  Brushless Permanent-Magnet Motor Design , 1994 .