I have a 5kw ginlong (www.ginlong.com) PMG with a open circuit voltage of 700V at 200 rpm. I want to use this generator with a wind turbine to heat water without using any batteries at all. The load circuit should include a heating element powered by thyristors. Is there a ready made control circuit available, or can someone give me a complete circuit that is ready to be put together? Any help would be much appreciated.