aurora 6kw

[Shaun Burgess]

hi can any one tell me why me inverter will not power of . the turbine is 360 mtrs from inverter when turbine is not turning .the inverter sits at 70dc . if i turn of ac power at controller in will power of in few mins . am using a fortis controller . and the peak power for today does not reset for that day. have to turn it of to reset

[Rob Beckers]

Hi Shaun,

From the Power-One wind inverter page (http://www.solacity.com/PowerOneWind.htm) on our Web site:

Issue: Inverter never switches off, even when the wind turbine is not spinning, and shows 60 or more Volt on its input.

Solution: This is caused by stray voltage, possibly capacitive coupling into the turbine wiring, that gets rectified and charges the input capacitors of the inverter. When the inverter is not exporting power to the grid the load on the input may be too low to discharge the input capacitors, and make the voltage drop low enough for the inverter to shut off. The PVI-WIND-BOX has resistors build into it, that serve to discharge the inverter input, but if you use your own rectifier you may have to add a 100 kOhm / 5 Watt resistor over the positive and negative DC inputs of the inverter.


Hope this helps!

-RoB-

[Shaun Burgess]

thanks rob i was afraid the inverter was taking power from grid and back feeding. will but the resister across the dc power wires connected into bottom of inverter that ok.

Is this what you are talking about: http://www.ebay.com/itm/5-Watt-100k-ohm-Carbon-Oxide-Film-Resistor-R-5W-10-/230584621979#vi-desc

[Rob Beckers]

Shaun, yes, those will work fine. You might be able to find one locally. Radioshack may have them, or any electronics parts store (stores that supply parts for the HAM radio enthusiasts would have it too).

The inverter does take power from the grid when it's switched on and there's not enough coming from the wind side. It takes around 30 Watt to keep the inverter running, so you don't want to leave it like that day and night, even when there's no wind.

-RoB-

[Shaun Burgess]

thanks rob . have another question you talk about a overcurrent protection device in the form of a dc fuse if the rectifier fails . so my max volts is 400dc at 5.8kw what size breaker or fuse would i need to use . and use it on the negative or positive of the dc . sorry about all the questions

[Rob Beckers]

Shaun, a 20A fuse will work (you can get inline fuse holders for 'midget' fuses of that size, rated at 600V DC). Traditionally this goes on the positive side, but it would work the same, negative or positive. A breaker would work too, but it would need to be a DC rated breaker and those are much rarer than AC breakers (it's simpler to stick with a fuse in a fuse holder, especially since this really should never blow unless something went very wrong).

-RoB-