Title :
Design and Control of a PM Brushless Hybrid Generator for Wind Power Application
Author :
Chau, K.T. ; Li, Y.B. ; Jiang, J.Z. ; Niu, Shuangxia
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ.
Abstract :
In this paper, a new permanent magnet (PM) brushless hybrid machine is proposed and implemented for wind power generation. The originality is that a small dc field winding and an extra air-bridge are incorporated in the machine so that the air-gap flux can be effectively strengthened or weakened to online keep the output voltage constant throughout the whole wind speed range. The characteristics of flux linkage and no-load electromotive force (EMF) are analyzed by using the finite element method (FEM), and these results agree well with those from magnetic circuit analysis. Experimental results also verify that the proposed machine can produce a constant output voltage over a wide wind speed range
Keywords :
air gaps; brushless machines; electric potential; finite element analysis; magnetic flux; permanent magnet motors; wind power plants; air-bridge; air-gap flux; brushless hybrid machine; dc field winding; electromotive force analysis; finite element method; flux linkage analysis; flux regulation; magnetic circuit analysis; permanent magnet machine; wind power generation; Hybrid power systems; Machine windings; Magnetic analysis; Permanent magnets; Power generation; Voltage; Wind energy; Wind energy generation; Wind power generation; Wind speed; Finite element method (FEM); flux regulation; permanent magnet machine; wind power generation;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.879436
