Affiliations: [a] School of Information and Electrical Engineering,
China University of Mining and Technology, Xuzhou, Jiangsu, China
Correspondence:
[*]
Corresponding author: Kun Hu, School of Information and
Electrical Engineering, China University of Mining and Technology, Xuzhou
221116, Jiangsu, China. Tel./Fax: +86 516 8388 4395; E-mail:
hucaipan@gmail.com
Abstract: Traditional synchronous motor system has complicated structure and
is difficult to maintain. In view of the mentioned problem, this paper aims to
propose a new structure brushless synchronous motor where AC exciter and
synchronous motor using the same core. Two concentric single-phase winding
grooves are cut on stator and rotor respectively, with the stator single-phase
field winding laying in the stator single-phase winding groove, and the rotor
AC induction winding laying in the rotor single-phase winding groove. The AC
power from AC exciter is rectified by the rotating rectifier for the DC field
winding. The results of the proposed structural design and FEA of the new
structure brushless wound field synchronous motor show that the new structure
is simple in structure, low in loss, high in efficiency and promising in its
future application.
Keywords: Wound field synchronous motor, AC exciter, rotating rectifier, brushless excitation, finite element analysis
