Author Topic: y Philippines Retirement Solar Off Grid System  (Read 4407 times)

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Offline Pete

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Re: y Philippines Retirement Solar Off Grid System
« Reply #75 on: October 25, 2021, 12:58:40 am »
Hi Solar, I am pretty sure that the new Big Oz inverters that Clockman sells boards and plans for use a Nano chip as the brains.
Oz mucked around a lot with them and used just the 8010 for a while but I believe he went over to a nano in the end.
If you look on the Aliexpress site they have better diagrams and photos of the Sunyima boards that you have there.
Make sure that you use the capacitor that they supply across the mains and also that the powerjack transformer has an inductor on it,.
Lighthunter and Noneyabusiness suggested using a torroidal inductor with 2 turns on each input winding of the transformer.
I have found the boards pretty quiet too,
There is more information on this thread  https://www.anotherpower.com/board/index.php?topic=1364.60
Pete

Offline Pete

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Re: y Philippines Retirement Solar Off Grid System
« Reply #76 on: October 25, 2021, 01:02:36 am »
Also have a look at this thread.
This site is great for information and helpful folk who do lots of dabbling.
Hope it works well for  you
Pete
https://www.anotherpower.com/board/index.php?topic=1402.msg15902;topicseen#new

Offline solarnewbee

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Re: y Philippines Retirement Solar Off Grid System
« Reply #77 on: October 25, 2021, 01:39:52 am »
Thanks Pete, didn’t realize that thread was still going on and relevant to what I’m doing.

On another note, I rewrote my code for the ATS with a 100ms delay between grid switch off and inverter switch on. barely a blink of the lights. Don’t know if the zero cross circuit has any bearing at all but rewired so that grid and inverter are wired in that side now. Originally wired left to right now wired right to left. No fireworks this time. Unless somehow the 8010 grid ties.

The only standby switch seems to be on the lcd for the inverter. I had set up a WiFi relay app timer to turn on with a relay at sunrise til 2pm when it gets reliably cloudy around here. Now I need to find a way to switch this Sunyima inverter on/off with this WiFi relay. I’m betting someone in that thread you sent me to knows how.
SN

Any day above ground is a day for potential mishaps

Offline Pete

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Re: y Philippines Retirement Solar Off Grid System
« Reply #78 on: October 25, 2021, 06:32:32 pm »
Good to see that you are getting it happening.
this site has as much info on those boards that I have been able to find
https://www.aliexpress.com/item/33035311978.html
cheers
Pete

Offline solarnewbee

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Re: y Philippines Retirement Solar Off Grid System
« Reply #79 on: October 27, 2021, 08:11:29 am »
Here's my code for the ATS. Not sure I even need an else statement, still learning.

const int INVERTERON_pin = 4;
const int INVERTERSSR_pin = 5;
const int MERALCOSSR_pin = 6;
 
void setup() {
  // put your setup code here, to run once:

pinMode(INVERTERON_pin, INPUT);
pinMode(INVERTERSSR_pin, OUTPUT);
pinMode(MERALCOSSR_pin, OUTPUT);

digitalWrite(INVERTERSSR_pin, LOW);
delay(50);
digitalWrite(MERALCOSSR_pin, HIGH);


}
void loop() {
 
  if (digitalRead(INVERTERON_pin) == HIGH) {
    digitalWrite(MERALCOSSR_pin, LOW);
    delay(50);
    digitalWrite(INVERTERSSR_pin, HIGH);
       
  }
    else  {
     digitalWrite(MERALCOSSR_pin, HIGH);
     delay(100);
    }


if (digitalRead(INVERTERON_pin) == LOW) {
    digitalWrite(INVERTERSSR_pin, LOW);
    delay(50);
    digitalWrite(MERALCOSSR_pin, HIGH);
      }
     
}
SN

Any day above ground is a day for potential mishaps

Offline Pete

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Re: y Philippines Retirement Solar Off Grid System
« Reply #80 on: October 28, 2021, 01:33:45 am »
 Hi Solar, I am not up on coding much, have only done a little bit with arduino once.
I did read somewhere that someone suggested using relays.
The thing with using relays or contactors is to make sure that they cannot possibly be on together at the same time.
In contactors used on Star/Delta motor starters there is usually a mechanical interlock as well as the usual electrical interlocks via the auxillary contacts, to prevent both contactors coming in together.
I figure your system should work fine as you said that you have added a time delay. The only time there could be a lot of sparks is if one of the SSR's goes short circuit.
The result would most likely be another fried inverter.
Also you have to make sure that there is no way that you would feed power back into the grid if the grid went down. Such as when someone is working on the transmission lines.
Cheers
Pete

Offline solarnewbee

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Re: y Philippines Retirement Solar Off Grid System
« Reply #81 on: November 29, 2021, 10:02:37 pm »
I see what your saying Pete about safety interlock. My coding skills are limited as well. I think I have a soft interlock. That’s why if the arduino reboots the code sets grid high and inverter low first. When the arduino loses power I Lose power as well. All pins go low.

On another note, I finally raised my windmill. Rented 8 sections of scaffolding and pulled an 1 1/2” galv pipe 40’ in the air. The dual gen was design sit atop a pipe. I shorted the 3 phase wires for both generators so it wouldn’t move until I was finished. Then I welded it to the steel structure of our second floor. I had fitted 8’ of 1 1/4” crimped and welded down and crammed inside both Sections of pipe to give the weld a solid base for strength. I’m not an expert welder but my booger weld never fail haha. I ran 2 3 conductor cables to the solar room and connect to some high amp 3 phase rectifiers and connected the dc in series for 48v out. At first I was getting volts up to as much as 90v. Then the bearings failed from sitting too long in storage. There is a rumbling noise that passes down the pipe and throughout the whole second floor. Next month I will bring it down and replace the bearings. The guy with scaffolding is gone for Christmas holidays. $67 rental assembled and disassembled doesn’t seem like a Philippines price but no choice.

I’ll tell something, when your 40’ up at my age and Deminished strength you tend to wrap yourself tightly with rope to the scaffolding and pray every time the wind kicks up nothing tips over. Everything tingles when you down. Going back down scares the crap out of me.
SN

Any day above ground is a day for potential mishaps

Offline bj

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Re: y Philippines Retirement Solar Off Grid System
« Reply #82 on: November 30, 2021, 03:36:33 am »
   Gives me tingles just looking at the pictures.
Be safe
BJ
"Even a blind squirrel will find an acorn once in a while"
bj

Offline Pete

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Re: y Philippines Retirement Solar Off Grid System
« Reply #83 on: November 30, 2021, 02:55:51 pm »
Yep , I have to get up trees at times to trim branches that are dangerous or shading my panels. I am the same, ropes and ladders, still it seems that the older we get the higher things seem.
Is there no way to hinge the towers so that you can lower the generators down when you need to work on them.
Even a hinge in the centre would make life a lot easier, if you had a steel cable attached to the top and a winch to raise and lower them.
Sounds like the bearings never had enough grease in them, if they dried out and died from storage.
Like BJ says be safe and good luck
Pete

Offline dochubert

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Re: y Philippines Retirement Solar Off Grid System
« Reply #84 on: November 30, 2021, 04:32:53 pm »
Wow!  Not just tingles!  Scares the crap out of me just looking at your pictures! 
You are definitely braver than me!  I don't think you could have gotten me to the top of that scaffold even when I was 20 years younger!  Make that 40 years younger!

(I knew there was another reason I never put up my windmills!)

And now you have to do it again....  Please be extra careful!
The soapbox is now banned.
The ballot box has been stolen.
The court system is completely corrupt.
Nothing left but the cartridge box....

USA = Banana Republic

---  dochubert --