Design of slotted core Axial Flux Wound Rotor synchronous generator

摘要

The generator designed in this research is Axial Flux Wound Rotor (AFWR) and as two air gaps machine. It has a planar and somewhat adjustable air gap with slotted stator and rotor. This generator is small-scale capacity which has 380 V, 1 kW and 750 rpm. The windings are laid into slots made from laminated core. The generator has a single double-sided slotted wound stator sandwiched between twin rotor. The generator relates only to wound rotor machine with disc type rotor and stator. The axial flux machine generally uses permanent magnets mounted on the rotor. Replacing the permanent magnet with a winding in the rotor, makes it possible to control the flux by varying the current flowing into the field winding. The results of design computation reveal electric quatities suited with respect to performance of the generator. Varying the airgaps and excitation voltages of the axial flux generator, its performance might be controlled to meet the need of a load attached to its terminal. It has been found out that for the airgap of 1.0 mm and the excitation voltage of 11 V, the field current and the efficiency are 3.82 A and 85.30% respectively.