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Forum Index : Electronics : 6Kw Ozinverter build
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renewableMark Guru  Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
One thing I missed was the digital temp thermometer for the control board, What have others been using? Cheers Caveman Mark Off grid eastern Melb |
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Clockmanfr Guru Joined: 23/10/2015 Location: FrancePosts: 429 |
This is what I use, and recommend. The OzInverter normally has 5 temp probes. I just use the probe and its cable, junk the rest, and direct wire the probe cable to the OzCooling board and one to the Overtemp connector on the OzControl Board. https://www.ebay.co.uk/itm/NEW-BLACK-AQUARIUM-TEMPERATURE-GAUGE-LCD-DIGITAL-THERMOMETER-FOR-FISH-TANK-WATER/400545190663 ?hash=item5d425a9307:m:mLMcVjMgtXPoAtFnONmH2oA Probably find these even cheaper. I like them as the probe is ready made and sealed and the connection's done, and its easy to clamp/hold that probe down.   Or you could make your own probe with a 10k 5% Thermistor Temp sensor NTC MF52-103 3435. these are very cheap, but need cabling and connections. I trust this helps. Everything is possible, just give me time. 3 HughP's 3.7m Wind T's (14 years). 5kW PV on 3 Trackers, (10 yrs). 21kW PV AC coupled SH GTI's. OzInverter created Grid. 1300ah 48v. |
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| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Ahhh thanks mate, I already have plenty of these as I strap them to fermenting barrells when making grog (hic) EDIT , yes I got a bit confused when I looked at the board and it called for the extra sensors that weren't in the list. It's a tad confusing to piece together since the project has evolved so much. Cheers Caveman Mark Off grid eastern Melb |
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Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
Seems a waste buying all that and chopping off the screen when you can buy 10 sensors for a dollar. http://www.ebay.com.au/itm/Good-Use-10PCS-Thermistor-Temperature-Sensor-NTC-MF52-103-3435-10K-ohm-5-DIY/122032518042?epi d=1475639255&hash=item1c69b4739a:g:TaQAAOSwjvJZWwnp There are only 10 types of people in the world: those who understand binary, and those who don't. |
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| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
I have quite a few lying around with dead batteries, it's cheaper @$1 to buy a new one than buy the batteries for them here in Aust, so already have some to chop up, but yeah, I see your point. Digital thermometer Cheers Caveman Mark Off grid eastern Melb |
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| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Almost done ordering For the cooling fans I see the circuit brd has 2 pin connection, can I use a 3 pin fan like here and just use the pos/neg lines? Also that one is 52cfm is that OK? Cheers Mark Also Clockman said to use a different fet on the power board, it was these ones can I use them on the cooling board too? Cheers Caveman Mark Off grid eastern Melb |
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| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
?? That was the FETs I suggested but you said were not right as Clocmans boards are setup for TO220 or at least that is what I thought. Yes those FETs and any other N channel will work for the fan control. I used 140 MM fans, if you are reusing the Aerosharp case they will fit with space to spare, bigger fans spin slower to do the same job. There are only 10 types of people in the world: those who understand binary, and those who don't. |
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| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Yeah, I asked clockman for a link to the best fets, he said those one you use actually fit better and didn't require the harsh bending the other ones needed. As if I wasn't already confused  I was just going by the parts list he gave with the boards. Cheers Caveman Mark Off grid eastern Melb |
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| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
So I was not wrong after all. Had that the other day, thought I was wrong and turned out to be right after all, must be going mad. There are only 10 types of people in the world: those who understand binary, and those who don't. |
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| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
You already are mad mate, product of being married and or kids, kids just speed the process up by 1000 times. Cheers Caveman Mark Off grid eastern Melb |
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| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
Been married twice, 3 kids There are only 10 types of people in the world: those who understand binary, and those who don't. |
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| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
That makes me 1/6th as much of a goose. Edit, maths isn't my strong point should be 1/3rd Cheers Caveman Mark Off grid eastern Melb |
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| Clockmanfr Guru Joined: 23/10/2015 Location: FrancePosts: 429 |
Yes, the new FETS will fit the OzCooling board without any modifications. Originally I designed the OzInverter boards to take several component physical sizes. I am in the process in updating/rewriting the OzInverter Book, as I am very happy with the present final evolution stages of the PCB's/boards design. Also looking at a full kit of parts for the OzInverter at a 6kW-15kW size. But going from supplying info, parts lists and PCB's, to a full kit, is a fair jump in concept and a fair outlay in stocking stuff. We run stuff here on a non profit basis, but a kit will have to have its cost effectiveness assessed very carefully. Everything is possible, just give me time. 3 HughP's 3.7m Wind T's (14 years). 5kW PV on 3 Trackers, (10 yrs). 21kW PV AC coupled SH GTI's. OzInverter created Grid. 1300ah 48v. |
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| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Hi Clockman, I know Oz has used those newer fets, have you done one with those yet? And what is the benefit of them over the old ones? Cheers Mark Cheers Caveman Mark Off grid eastern Melb |
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| Clockmanfr Guru Joined: 23/10/2015 Location: FrancePosts: 429 |
Hi Mark, Have a few new FET's running here and their, and some test machines, but at this precise moment, No Complete machine with the new FETs actually running full time. I am still using up my old stock which work well. Benefits,? hmm, a little bit more robustness. If Oztules has tested and running them, I do love his test methods of deliberately blowing them up! then the World is right with me.! Everything is possible, just give me time. 3 HughP's 3.7m Wind T's (14 years). 5kW PV on 3 Trackers, (10 yrs). 21kW PV AC coupled SH GTI's. OzInverter created Grid. 1300ah 48v. |
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| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
The HY4008W FETs are rated to 200A for the Silicone inside where the IRFP4110's are 180A. That is not much different. The big advantage is the low resistance when turned on which is about 1/3 less. So the HY4008w's run cooler. There are only 10 types of people in the world: those who understand binary, and those who don't. |
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| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Thanks guys. Just started dry fitting some components to the control board. The parts list has 4x 10 uf electrolitic caps, however on the board there are 4 spots which are marked 10uf that are the correct size on the left. Two more are toward the centre but have a bigger outline and there is another that sits under the 8010 board, that one looks the correct outline size, however there is no polarity marked. Confused, parts list states 4 are req'd, outlines for two are different size. Pic is of loosely fitted parts for clarity.  Cheers Caveman Mark Off grid eastern Melb |
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| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
 OK parts list also shows monolithic chip caps x 5 that is probably the one with no polarity marked then, dunno where the other 4 are though. Cheers Caveman Mark Off grid eastern Melb |
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oztules Guru Joined: 26/07/2007 Location: AustraliaPosts: 1686 |
 crappy pic I know The four on the left in a straight line are electro. All the other caps ( but for the 100uf) I use ceramics. tip... do the lowest components first ( resistors, diodes etc ).. then caps, then 8010 etc. Makes it much easier to do....oh, and make sure there is clearance for the crystal above the board ( say 1mm air gap ) This is my normal unit complete with 16 hy4008. It easily does 14kw and more for start up of 5hp motors..... don't know how many I have made, but they all work out of the box... plug and play. One neighbor who has one as a back up for the grid system here ( flaky) told me the other day he was running the house with it ie hot water on, fridges and freezers and air conditioner, etc etc, and was welding some stuff up for a sizable project... thinking all long the welder was on the grid circuit, only to find the whole lot was running off one of these things... he is a true believer now.... before he thought they were beaut, now he thinks they are legendary. ....oztules edit this is clearer.... just  And this is how I do the neg installation... I use a 1/8" copper bar ( 20mm wide ), and sweat it onto the board, and then screw it as well. Makes the board easy to install.... 4 bolt points for the cables, and a few plugs to the top board.  Village idiot...or... just another hack out of his depth |
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| renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Thanks mate, did my head in as there was polarity printed on the board, might pull up stumps and have a G&T. Cheers and thanks mate. Cheers Caveman Mark Off grid eastern Melb |
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