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Re: 48V alternator (ICE driven)

Thu, 12/29/2016 - 21:57
You can run a pre-Regulator circuit to drop the 48V to a reasonable level for the field coil.  You can use either a NPN or N-ch MOSFET, but the MOSFET can generally handle more current.  I sketched up a quick circuit.

Don't forget the Heatsink.  You ca...

Re: 48V alternator (ICE driven)

Thu, 12/29/2016 - 19:26
That is all true,  the field coil is a winding designed to operate at something less than the regulator voltage maximum.

So what happens when you start up your alternator, the regulator connects the field winding effectively to continuous full battery ...

Re: 48V alternator (ICE driven)

Thu, 12/29/2016 - 18:45
I have a suggestion.  My understanding of alternator regulators, is that by default, the Field Coil is "ON".  When the desired voltage limit is reached, the Field Coil is switched off.  It switches off/on multiple times to maintain voltage.

So you can ...

Re: Using and charging different type of batteried

Wed, 12/28/2016 - 14:29
Actually, I was hoping you would check my assumptions - like, do you actually get that much sun on a given day?

The one danger with old batteries - especially mixing them - is that a "bad" set will pull down a "better" set, and this gets worse and wors...

Re: Solid State Relays, Uses, and Trigger Circuits

Wed, 12/28/2016 - 12:14
I was looking at my TL431 Trigger Circuit and I realized that the IRF9540N MOSFET I am using is rated for 100V and 23A.  Not bad for a 77 cent MOSFET.  Depending on your load and adequate heatsink, you can use the external circuit directly to run you l...

Re: Using and charging different type of batteried

Wed, 12/28/2016 - 10:02
  Hi sparweb

 " 12 cells x 2v = 24V battery in the Hawker bank, each string 200 Ah X 3 strings, total 600 Ah.  Net 14.4 kWhr
12 cells x 2v = 24V battery in the Emerson bank, each string 400 Ah X 3 strings, total 1200 Ah.  Net 28.8 kWhr
12 solar panels ...

Re: Why did you get involved in alternative energy?

Wed, 12/28/2016 - 01:05
.
Johann
Newbie
Or....
unstable power


I think my main answer is for fun/challenge, but I guess part of the reason I later on went back and put in batteries was the occasional outage that we seemed to have around here.

Re: EMP...Faraday cage on solar panels?

Wed, 12/28/2016 - 01:03
Quote from: liberty_911 on October 05, 2016, 09:51:55 AMTo answer the original question, I've been told by a PhD in physics that the panels would survive an EMP, but that the diodes that are inside the panels would possibly b...

Re: Using and charging different type of batteried

Tue, 12/27/2016 - 18:43
Merry Christmas to you too Jason!
Congratulations on the new additions!

Am I figuring this out correctly?

You have:
12 cells x 2v = 24V battery in the Hawker bank, each string 200 Ah X 3 strings, total 600 Ah.  Net 14.4 kWhr
12 cells x 2v = 24V batter...

Re: battery sizing

Tue, 12/27/2016 - 12:18
"They wind mill sounds a lot like the Hornet units."

Yes, this is exactly what it is.

"I kind of think I know the charge controllers your talking about that auto sense 12 or 24v.  They actually work quite well."

According to the instructions they can ...

Re: battery sizing

Tue, 12/27/2016 - 11:38
johnnym;
This turbine sounds very familiar.
I will add just a few things, but firstly I have to agree with others.
Don't worry too much about the wind mill over-charging the battery(ies) for now. They wind mill sounds a lot like the Hornet units.
They ...

Re: Grid tie voltage? AC or DC?

Tue, 12/27/2016 - 09:38
Quote from: MAL on December 23, 2016, 05:41:50 PMHi Bruce, 

I am not sure it is a good idea to give out my address on the world wide web, but if you promise not to tell anybody, that's Iowa that we are looking at across the r...

Re: battery sizing

Tue, 12/27/2016 - 06:51
Electrondady is probably right.  The best way to proceed would be not to worry that the mill is 48v and just hook it up to a lower voltage battery and  take a bit of an efficiency loss.  Since your controller is 24v that would be a good start point.  Y...

Re: Using and charging different type of batteried

Tue, 12/27/2016 - 04:21
 Hi Sparweb  (merry  Xmas)   i'm more concerned  with the the charging of the two type of batteries. The 600 ah hawker works fine
with 6000 watt of panels and of course the turbine. I've just acquired another set of (used ) batteries   1200 ah of EMER...

Re: Re wiring/ configuring Panel Voltage.

Mon, 12/26/2016 - 14:14
I have found nothing on line, but there is an eight page A4 sized operation manual that comes with it that is not that bad.
See below for some abbreviated  specs.

Have to agree that the information available on line is absolutely atrocious.
But the uni...

Re: Control for heating with solar off grid no batteries

Mon, 12/26/2016 - 10:06
The space heaters are still the same two  750 watt  240 volt.   Have had a lot of snow and
overcast with no sun in December.  Maybe in January with the days getting longer it will be better.

Re: 48V alternator (ICE driven)

Mon, 12/26/2016 - 09:56
withdrawn post

Re: Re wiring/ configuring Panel Voltage.

Mon, 12/26/2016 - 09:42
That looks interesting.  You would never get that it is a controller from the spec.  Like one reviewer said, "the instructions are near to useless. There is nothing to tell you where to attach the wires."

It always confounds me that sellers want you t...

Re: Photos yearly inspection

Mon, 12/26/2016 - 06:35
Dan,

I used the standard black Por-15 thinned out to seal the wood blade.  Next, applied the Por-15 High Build primer, sanded, and add another coat of primer.  Then three coats of the two part white Hard Nose top coat.

Foam brushes work very well and l...

Re: Manual of a 27.6 V, 200 W battery charge controller available

Mon, 12/26/2016 - 03:36
Today I have added a photo of the A1 drawing of  the dump load to the manual. The photo is too vague to read the measures if it printed on A4 format but it can be enlarged on the screen of the computer that much that all the measures can be read. The d...