 Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me. |
Forum Index : Electronics : 6Kw Ozinverter build
  Page 41 of 51   |
|||||
| Author | Message | ||||
renewableMark Guru  Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Thanks Warp, there is prob 4 times the power made on a sunny day than I need but it's that bloody Melb cloud that needs to be planned for. Thanks Rev, that's my changeover switch. Renewable is to the right. Cheers Caveman Mark Off grid eastern Melb |
||||
| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Well my machine is going nicely, off grid and totally reliant on my Oz/Madinverter. The infrequent restart issue that Tinker fixed with a relay is a good result, but I seem to have the same result with just clip on filters from the aerosharps. I put three on the on off switch cable and same amount on the temp probe cables just in case they were sending interference. My issue was very infrequent though, but haven't had an issue for 10 days since they were put on. As far as the 8010 shoot through paranoia is concerned, Oztules just emailed me, I didn't understand 99% of it but the guts was, don't worry, nothing to see here move along, it's rock solid, no need to fiddle with it. Restart it as many times as you like from over temp under volt over current and it will be fine. If Oz said it's fine Mad said it's fine, I can do numerous restarts without a problem myself, then hell, I reckon it's fine. Cheers Caveman Mark Off grid eastern Melb |
||||
Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
I am overseas for another 3 weeks but when I return I plan to set up a test rig and programme the Arduino on the control board to turn off the inverter and restart it every 10 seconds. Then I will leave it running like that with a 2200W load on it and count the number of times it can shut down and restart. It will only take a few lines of code to do this as the Arduino is connected to the temperature sensor and uses it to shut down the Inverter if needed. The biggest issue I have had with my inverter in recent times is the instant restarts that Tinker has experienced also. I plan to put a Logic level MOSFET between 5V and pin 6 to see if that cures the restart issue. There are only 10 types of people in the world: those who understand binary, and those who don't. |
||||
| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Don't stress yourself with this nonsense now mate, concentrate on having a fun holiday, everyone that has made these is wrapped with them. Re the restart issue, do try the clip on ferrites though, not really enough time to prove them for me, but 10 days is looking promising. Sink some cans for me mate and take plenty of pics.  Cheers Caveman Mark Off grid eastern Melb |
||||
| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
I am not stressed about it, actually, I find it rather funny. Having plenty of fun and enjoying the local brew. No I did not try the ferrites, my switch wires are shielded so I am not sure if that will have an effect. First thing I want to do with it is bridge pin 6 to 5V without the 10K pull down and switch it on and off via that nasty over temp input. The only time I am getting those resets with an instant restart is when the off grid inverter is idling on float and the GTI's are powering my house and I am using PWM from the Regulator to feed excess power to my HWS. The rapid switching on and off of the HWS works really well except for the times when the battery is on float and the PWM is on. I have overcome it for the moment by a much slower switching algorithm. There are only 10 types of people in the world: those who understand binary, and those who don't. |
||||
Tinker Guru Joined: 07/11/2007 Location: AustraliaPosts: 1904 |
The brownout thing seems to have gone away with the little relay addition, there always were clip on ferrites on the 240v wires in my inverter BTW. But a different, and very odd, issue started on my double core inverter. It could easily power 6KW and anything I plugged in but at odd times it would do a blackout when I turned on a plugpack charger or a LED light - no other big load, just the fridge running then. The thing would re start manually after re setting it - nothing blew up. So I am now re routing some wires differently inside, some 240V wires were parallel (~10cm) with the positive from the battery - no idea if that was responsible as no heavy load was on. It seems mine has a resident gremlin but I won't rest until I find him  .I also have now fitted my latest control board which has a more compact layout, will see tomorrow how the thing behaves. With 4 inverters here its no hardship to tinker with one or two of them while the others do the house work. I might try that shoot through board if one becomes available, easy if its just plug in. But I do remember my first control board used the EGS002 plug in and despite this having the fabled shoot through protection the Mosfets blew just the same with my earlier builds. Klaus |
||||
| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Tinker mine restarts with no/little load in the dead of night, it's almost like they don't like having nothing to do. The clip on ferrites on the on off switch line and temp cables appears to have fixed it. Try that, only takes 30 sec. On another note, I finished unwinding the second 3kw core just a few min ago. Never notice these markings on the previous cores.  Cheers Caveman Mark Off grid eastern Melb |
||||
| gaspo Regular Member  Joined: 25/06/2018 Location: AustraliaPosts: 65 |
Where from do you guys getting these toroidal cores these days? I'm trying to get some for the past few months but to no avail. |
||||
| Tinker Guru Joined: 07/11/2007 Location: AustraliaPosts: 1904 |
Try Karl Jensen at Solar Gain. I got my cores from him and he did want to sell some dead aerosharps but that was a while ago. Klaus |
||||
| gaspo Regular Member Joined: 25/06/2018 Location: AustraliaPosts: 65 |
Thanks Tinker, I'll try to contact him. |
||||
| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Oh just ask wiseguy he has the answer for everything. Cheers Caveman Mark Off grid eastern Melb |
||||
| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
Oh Wiseguy Huh? nuk nuk nuk  There are only 10 types of people in the world: those who understand binary, and those who don't. |
||||
| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
https://www.youtube.com/watch?v=yscaDkzHqek&index=1&list=RDyscaDkzHqek Cheers Caveman Mark Off grid eastern Melb |
||||
wiseguy Guru Joined: 21/06/2018 Location: AustraliaPosts: 1156 |
And I cant let that go without saying something either. I don't have all the answers & I dont pretend to, but I do have some. I am also bothering to try to find further answers instead of just sniping and backbiting to others making an effort. I have actually identified 2 previously undiscovered inherent issues with the EG8010 & there's more to go yet from what I found yesterday. Warp is correct that the fact the inverters run as reliably as they are is more a testament to a lot of luck in a mediocre design. The throw a crowbar at the electronics and then let it restart totally unsupervised and randomly is almost bizarre & a fair way from the good design it could & should be. I am suitably impressed that more inverters dont give more trouble, and totally unsurprised that some occasionally do. If at first you dont succeed, I suggest you avoid sky diving.... Cheers Mike |
||||
| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Mate, you really got yourself off on the wrong foot by telling us that our inverters couldn't be restarted without blowing up when they had an under volt, over current, over temp. We all know they can, so when a new guy comes on here and basically tells us false claims about something he has never seen or knows about then expect a bit of flack. I don't care how smart you are, if you come across like a know it all, then you'll get treated like that. Look at Poida, he's probably more clever than you, but you'll never see him blowing a trumpet, very humble but very clever fella. The Oz/Madinverters may not be as perfect as you would like but the fact remains that they do work fine, they re start fine, give a nice sine wave and have enormous surge capability. If you come up with something better then that's great, progress is a good thing. Just relax a bit, and don't pick a fight if you don't want to get into one. Cheers Caveman Mark Off grid eastern Melb |
||||
| wiseguy Guru Joined: 21/06/2018 Location: AustraliaPosts: 1156 |
OK this time I'll wave the white flag. To anyone on the forum that I have offended by coming across as a smart arse I apologise unreservedly. My intention has only been to learn, help others and try to be an asset to the forum. If I blew my trumpet it was at about post 80 when it felt like my knowledge and skills were in question. There are lots of people smarter than me, however I am passionate and tenacious, attributes which should not be viewed negatively, I usually triumph over whatever I set my mind to. Mark we will have to agree to disagree about my findings with regard to cross conduction and its dangers. Going forward, I'm not sure how to present my findings and their implications in the future - I seem to be in a no win position here Perhaps my username has not helped matters either - but I have been using it for over 10 years on ebay and other sites as it is usually available. I never came to the forum to pick fights yet it seems that to have an opinion different to the mainstream invites an atmosphere of negativity bordering on hostility - I have received PM's of support so obviously the atmosphere is not necessarily convivial at times and some are afraid to really say what they think in the open. It should not have come across that inverters could not be restarted, but at the restart from those events is when the glitch occurs with the inherent associated risk. I will try be more careful/mindful at what and how I write in future If at first you dont succeed, I suggest you avoid sky diving.... Cheers Mike |
||||
| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Don't feel bad to post advances in designs, that's a good thing. Just don't tell people their machines, can't do something they know they can. Simple as that. Reckon it's time to move on from this now. Cheers Caveman Mark Off grid eastern Melb |
||||
| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Klaus, Gary, I reckon the ferrite filters do the trick to stop the unwanted restarts, just got back from a 5 day van trip on the Murray, all the clocks at home are set still, so no restarts of the inverter. That is over 2 weeks without an unwanted restart since they got fitted, give that a try fellas. 3 on each of the on/off line and temp probe lines. It would be interesting to know if anyone else has had this issue? Who else has finished a Mad inverter? Cheers Caveman Mark Off grid eastern Melb |
||||
| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
Mark I am still a few weeks of getting home and will try it then, also I will be trying 5V direct to Pin 6 and use the faulty temperature input to turn off the Inverter and see how that goes. FYI Mark here is the Burden Resistor that you supposedly don't have.  Here some detaila about why it is there. There are only 10 types of people in the world: those who understand binary, and those who don't. |
||||
| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Cheers mate. Cheers Caveman Mark Off grid eastern Melb |
||||
| Page 41 of 51 |
|||||
 Print this page |
