Re: hooking up a s.w. wind air 303 to an external rectifier
Welcome to the forum.
You've got a problem. The three slip rings are designed to take DC: one for positive, one for negative, one for the ground.
When you have 3-phase AC output you need one slip ring per line and a fourth for ground. If you leave out one of the AC connects you leave out approximately 1/3 of the power. If you leave out the ground you leave the turbine open to picking up every bit of stray Voltage (lightning) around and sending it on down the wire.
You could use the slip rings for the AC and fabricate an external grounding brush, but it probably would not be too reliable. You could also install a physical stop on the turbine so it can't swing through 360 degrees and ground the head with a loop of wire. None of these solutions is very desirable. Maybe you can just get six rectifiers of appropriate size and wire up your own circuit, although the regulation would then be external. I'm not sure if the 303 is a PMA or has an active rotor winding. It makes a difference.
In any case, take it down to do any testing and modification/adaptation. You can control conditions on the ground by spinning it with a motor so you get consistent output. Then you'll see what (if any) power you can get from it with different configurations.
Four 175 Watt panels, OB MX60, 232 Amp hrs, OB 3524, Honda eu2000.
Ohm's Law: Amps = Volts / Ohms
Power Formula: Watts = Volts * Amps