Motor speed (RPM) is dependent upon the speed (frequency) of the rotating magnetic field.
Dean Of course you are right...but what control the frequency of the rotating field?.. these water pump direct hooked up to the solar panel operate from zero to full flow depending on the amount of sun. They have to be running at different speed to do this, therefor the controller must be putting out 3 phase at varying speed. depend on what? I don't think that they could be "slipping " that much in speed. The pumps seem to run as fast as they can with what is wired to them. I see one pump listed it's GPM at 24 volt and half that flow at 12 volts.
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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