Investigation of the Features of a T-LSM with Quasi-Halbach PM Excitation under Manufacturing Constraints

The paper is aimed at an investigation of the no-load features of a tubular-linear synchronous machine (TLSM) with quasi-Halbach PMs in the mover that takes into consideration the constraint allied to the manufacturing of the radially magnetized magnets. These are achieved by four equal parts with parallel magnetization, yielding the so-called "quasi-radially magnetized PMs". A special attention is paid to a 3D finite element analysis (FEA)-based investigation of the effects of such a topological change on the machine no-load features. The predicted features are experimentally validated. It has been found that the proposed arrangement of the radially magnetized PMs has an insignificant effect on the no-load features.

[1]  D. Howe,et al.  Tubular modular permanent-magnet machines equipped with quasi-Halbach magnetized magnets-part I: magnetic field distribution, EMF, and thrust force , 2005, IEEE Transactions on Magnetics.

[2]  Y. Perriard,et al.  Optimization Design of a Segmented Halbach Permanent-Magnet Motor Using an Analytical Model , 2009, IEEE transactions on magnetics.

[3]  L Parsa,et al.  Multiobjective Design Optimization of Five-Phase Halbach Array Permanent-Magnet Machine , 2011, IEEE Transactions on Magnetics.

[4]  Z.Q. Zhu,et al.  Recent Development of Halbach Permanent Magnet Machines and Applications , 2007, 2007 Power Conversion Conference - Nagoya.

[5]  Z. Zhu,et al.  Instantaneous magnetic field distribution in brushless permanent magnet DC motors. III. Effect of stator slotting , 1993 .

[6]  Han Ding,et al.  Analysis of Curve-Edged Halbach Arrays in Linear Permanent-Magnet Actuators Using the Open Boundary Differential Quadrature Finite-Element Method , 2016, IEEE Transactions on Magnetics.

[7]  Liyan Qu,et al.  Design optimization of a linear generator with dual Halbach array for human motion energy harvesting , 2015, 2015 IEEE International Electric Machines & Drives Conference (IEMDC).

[8]  Ahmed Masmoudi,et al.  Prediction of the air gap flux density distribution of a T-LSM with quasi-Halbach magnetized PMs: Application to the cogging force minimization , 2015, 2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER).