Hello everyone.

I'm working on a wind turbine project with seven other people. I need the circuitry for charging a battery bank from the alternator. I've given the details of alternator below.

Alternator Specifications

*3 phase (3 wire)
*8-pole Permanent Magnet
*Generates an optimum power output of 250W (line value) at 750rpm.
*Maximum power up to 300W (line value).

Please help me find the relevant circuit.

 

I've never set up a wind generator, so take this advice with some caution... You at least need a 3 phase recitifier module. You probably want a charge controller that will guarantee that you don't keep dumping current into the batteries once they are fully charged. I have seen sample circuits on the web for this, look up "Charge controller" in your favorite search engine.

Basically you are switching the current to the batteries off when the batteries are charged, but you still need to provide a load for the generator or else it could free spin out of control. Switching to a power resistor would work, maybe even "shorting" the windings together although this will build up some heat in the PMG itself (at least a partial power resistor may be warranted).

Good luck and report your results here!

KEJR