I posted a schematic similar to my generator setup. http://www.wallacecompany.com/machine_shop/Onan_5CCK/Onan_schematic.png
Mine is a 230 VAC, four wire, single phase. 115 VAC comes off of each slip ring pair, 180 degrees apart. The commutator and windings act as a starter motor, then after the engine starts, provides DC to the field which is the static outer windings, and for starting battery charging. Starting may provide an initial field for the field windings, but I believe there is enough residual field in the rotor to get things going. There is a variable resistor on the DC supply for a field voltage adjustment, and one for battery charge voltage. As far as AC output regulation goes, I don't know how it works. There are rotating and static electric and magnetic fields, which must interact to keep the voltage constant in relation to RPM. A DC motor's back EMF is like this, but there are much fewer interacting elements. My plan was to fit an external regulator if needed. Of course, EMC2 could be used as a generator controller. I am still looking for rewinding materials. So far, I have Sprayon varnish and a source for armature wire. If anyone has a good source for Nomex paper, tape or whatever is appropriate for slot lining, please let me know. There is a lot of Onan knowledge gathered here: http://www.smokstak.com/forum/forumdisplay.php?f=1 -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
