I have noticed that the majority of axial flux generator designs that people have built on the web don't have iron cores in the stator. Is this because the flux is already sufficiently dense due to the layout of the magnets that an Iron core is really not needed?
Here's two papers with in depth research
http://jfgieras.com/RJW_IEEE_MAG_2005.pdf
http://proceedings.ewea.org/ewec2009/allfiles2/276_EWEC2009presentation.pdf
Here's two papers with in depth research
http://jfgieras.com/RJW_IEEE_MAG_2005.pdf
http://proceedings.ewea.org/ewec2009/allfiles2/276_EWEC2009presentation.pdf