Jinx wrote: > There is a mechanical reason for switching too, and that is that a lot > more wind is need to start the blades in delta configuration, because > of the magnetic cogging. But that's only because of the unintelligent control system. A smart system could put no load on the generator at all until it got to a certain minimum speed, for example. PFC will also reduce cogging due to the varying power draw over a cycle. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist