Analysis and Experimental Investigation for Field-Control Capability of a Novel Hybrid Excitation Claw-Pole Synchronous Machine

The structure and operation principle of a novel hybrid excitation claw-pole synchronous machine (HECSM) are introduced. The field-control capability based on the equivalent magnetic circuit method is analyzed. A 3D finite element analysis (FEA) is used to analyze no-load magnetic field distributions, air-gap flux, phase flux linkage and back EMF variation for different field currents. Furthermore, torque characteristics of the HECSM for different field currents are explored. A 2 kW prototype is manufactured, and the experiment for field-control capability is carried out. Experimental results coincide well with those of FEA. The experimental and FEA results indicate that the flux of the HECSM can be adjusted in a wide range with a relatively low field current.

[1]  T.A. Lipo,et al.  A new axial flux surface mounted permanent magnet machine capable of field control , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[2]  Lin Heyun,et al.  Magnetic field analysis of hybrid excitation brushless claw-pole motor with three-dimensional finite element method , 2005, 2005 International Conference on Electrical Machines and Systems.

[3]  T.A. Lipo,et al.  Consequent pole permanent magnet machine with field weakening capability , 2001, IEMDC 2001. IEEE International Electric Machines and Drives Conference (Cat. No.01EX485).

[4]  E. Spooner,et al.  Hybrid excitation of AC and DC machines , 1989 .