Three Phase Rectifier Help

[Tim McMurran]

Would anyone out there have an idea that I could toss together quickly.

Here is the problem. I have received the replacement Turbine from SWWP, but of course it comes without the controller. Not an issue. I have a Xantrex C60 for that end of the problem. I am thinking that I need to come up with some interesting little DIY three phase rectifier with blocking diode to take the wild AC from the spare (junk) Whisper 100 before it enters the C60. (Am I correct?). Or here is another one, can I hook two Whisper 100's into a single Whisper controller?

So to toss a three phase bridge rectifier together that will work with the Whisper 100 what parts should I be looking for? Or would anyone know of anything off the shelf that I could use without the need for too much cut and paste effort? 

[Stewart Corman]

you mean like this:
http://www.mouser.com/Search/Refine.aspx?N=4932236+4294605404&Keyword=three+phase+bridge&FS=True
check ebay for "60A 1200v"


BTW why should a 3 phase AC alternator require a blocking diode ?

check out this link:
http://www.windstuffnow.com/main/3_phase_basics.htm

Stew

[Tim McMurran]

you mean like this:
http://www.mouser.com/Search/Refine.aspx?N=4932236+4294605404&Keyword=three+phase+bridge&FS=True
check ebay for "60A 1200v"


BTW why should a 3 phase AC alternator require a blocking diode ?

check out this link:
http://www.windstuffnow.com/main/3_phase_basics.htm

Stew

Thanks. From my understanding the blocking diode is required to prevent the batteries from feeding current back to the turbine. Kinda like appling power to an electric motor without one. You only want the power going one way into the battery bank, not both ways once the charge level is above the current being produced by the turbine it would start to back feed and turn the turbine like a small motor. The one you link to states it has the diode contained within the bridge, might work.

[Brian McGowan]

I was going to suggest an alternator rectifier if you are in the 12 volt range since they are fairly cheap and pretty rugged and have nice posts to bolt wire to.

Stewart's idea is a little less expensive and much higher voltage rating.

I'm not an expert here so this is only another idea to consider.


http://cgi.ebay.com/ebaymotors/RECTIFIER-DIODE-BRIDGE-12SI-94-AMP-DELCO-ALTERNATOR_W0QQcmdZViewItemQQ_trkparmsZ72Q3a1546Q7 c66Q3a2Q7c65Q3a12Q7c39Q3a1Q7c240Q3a1318Q7c301Q3a1Q 7c293Q3a1Q7c294Q3a50QQ_trksidZp3286Q2ec0Q2em14QQha shZitem2ea357cee7QQitemZ200308936423QQptZMotorsQ5f CarQ5fTruckQ5fPartsQ5fAccessories

Brian

[Rob Beckers]

. . . before it enters the C60 . . .

Tim, just to make sure: You're planning to use the C60 in its "diversion controller" mode, right? See page 8 of the C60 manual. In that mode the wind turbine goes through a bridge rectifier (such as the one Stew suggested), then straight into the batteries. The C60 also hooks up directly to the batteries and has a diversion load (dump load) connected to it. When the batteries are full the diversion controller starts loading up the batteries with the dump load to siphon off excess charge.

The wind turbine should never be connected directly to the C60, unless you want a quick way to let the magic smoke out of it. :smokin:

-RoB-

[Tim McMurran]

Tim, just to make sure: You're planning to use the C60 in its "diversion controller" mode, right? See page 8 of the C60 manual. In that mode the wind turbine goes through a bridge rectifier (such as the one Stew suggested), then straight into the batteries. The C60 also hooks up directly to the batteries and has a diversion load (dump load) connected to it. When the batteries are full the diversion controller starts loading up the batteries with the dump load to siphon off excess charge.

The wind turbine should never be connected directly to the C60, unless you want a quick way to let the magic smoke out of it. :smokin:

-RoB-

Hi Rob :)

That is what I planned on. Running the turbine through the rectifier then once the batteries were charged have the C60 dump to the two 12v hot water heater elements. I am thinking that I will need to play with the settings a little though. With the original Whisper Controllers dump setting and the C60's. This is where I may find myself at a bit of a loss down the road. I know that I should be able to have multi charging sources to a single battery bank, it is just obtaining the correct balance that will be interesting.

If you have any ideas on this, please fire away. :)

This is my plan.

Turbine 1 - Connected to the Original Whisper Controller set at xx.x volts to batteries.
Turbine 2 - Connected to rectifier to batteries then to C60 set at (the same as the original whisper?) or do I need to set it higher or lower.

The other working whisper, turbine 3 is connected to another battery bank in my workshop at 48v, and I really do not want to mess with that one since it has never caused any grief.