In the video I mentioned sinopoly, this is totally wrong, I meant sigineer. as in: www.sigineer.com/product-category/inverter-chargers/48v-inverter-chargers/
Just my observation. Most of this video and the comments are way beyond my understanding, but I have been dabbling with inverters for a few years now. We are completely off grid in Orkney, Scotland and have used a Powerjack 8kw for about 6 or 7 years. Works great, but thought I’d better get myself a backup. I got the identical AliExpress board to the one in this video and connected it to a big toroidal transformer. The sine wave is not as good as the Powerjack, but everything in the house works perfectly. We generally draw about 150 to 250 watts at 240v ac, but occasionally it goes up to about 5kw for a while when cooking or washing clothes. It runs 24/7 and has been “on test” for about 5 or 6 months. Very little heat generated, a little when the boss is cooking. 😋
Ive seen 48V 10KVA inverter power PCB on ebay for only $217AU, not bad. Unlike most off the shelve inverters, These units require a large power transformer, to covert the voltage to service say 230VAC, this may sound expensive, but making an inverter this way is far more reliable, than the rubbish on the market costing thousands. Plus if anything fails its cheap and easy to swap out the invert board and of u go. You can choose what even battery bank capacity you want and its easy to make a massive UPS, you can add redundancy, add solar charging panels arrays. One trick for reliability is to never run the inverter at full current, use the limiting pots to protect the board. Another trick is to design the output transformer for high impedance, this is to reduce the maximum possible fault current.
A excellent video still you really need a part two. Honestly for me it is a learning curve and I hope you would consider a basic video on putting it all together.
The inductor is far far too small for 150A hence the cover melting off, at full intended load determined by you the series inductor should only get warm. The weakness in the design is those tiny dc power decoupling electrolytic capacitors between the heat-sinks as the high ripple current is the killer they dry out go open and the things blows up in smoke. you can solder large caps too bottom of PCB for backup, and never run the board at full power.
How can we calibrate the overload protection ( short circuit) trimmer pot? Is there a formula to calculate the resistant to be set in the pot for overcurrent protection??
Great video but some critical errors you made there. 1. Do not use the high voltage output of the transformer in centre tapped configuration for 120/240v output. There are nasty transients on the centre tap even when grounded. Use a separate buck transformer to get the 120v you need. I learned that lesson the hard way when most of my home electronics burned from the 120v output. You need to use an oscilloscope to verify a clean waveform after commissioning the inverter. 2. Removing the small transformer from the board is not good since those long leads to the inverter board will introduce noise that messes with the voltage regulation. 3. The inrush limiting toroid inductor is only needed for toroidal transformers. The softstart feature of the spwm card eliminates any Electrical stress during power up for El type transformers.
Hello instructor, I saw your video demonstration and I want to ask you to teach me on how to use or connect an inductor to this type of Chinese inverter board. Please is the inductor connected to the input of the transformer, to the board circuit any how? Or there is strictly an instruction to follow? Talking of the inverter board in this video as an example, thanks Engineer.
I'm interested in this approach, as I want to use a 36 volt battery and inverters for this voltage appear to be scarce and costly. I've spent the last few years repairing large-scale audio power amplifiers so this isn't too far from what I know well. I also have some very large toroidal power transformers which I can rewind. I'm curious if the input current is proportional to the apparent or true output power. I expect it will be the former, so I would look into whether shunt capacitors for my refrigerator compressor and whole-house fan will reduce battery load by improving power factor to near unity. Thanks for your efforts, de AC4AQ
I tested the low frequency inverter that I designed but the out put is giving me 106v and when I connect filter capacitor of 5uf the out put dropped to 83v without feedback and when I connect the feedback the out put go up to 85v and the the feedback voltage is 2v minimum. What could be the issue while the out put can't go up to 200v. I used spwm module. Thanks for your reply
i got one of these from amazon usa www.hubbell.com/acmeelectric/en/Products/Electrical-Electronic/Power-Quality-Conversion/Buck-Boost-Transformer/Buck-Boost-Transformer---Single-Phase-120-X-240---1224V-7-5kVA/p/1655918 its called a boost transforrmer.
Hello . Very interesting video .I've actually bought 1 of these. .48 volt .I wonder if you can help , it's all connected up .but I can't even get the led on the driver board or the led next to the feedback transformer to light up . Basically .the unit doesn't boot up
there is a feedback line that lets the controller know if the output needs boosted. Under load, the output is mostly pretty good, ranges from 237-241 Vrms
I bought the 48v 11000VA Pure Sine Wave Inverter Board Power Frequency Inverter Board I was expecting to be able to just plug it in and use it not realizing I need a 47uh dr. And a 5KW-10KW 220v transformer I find out after receiving it ! I bought off E-Bay is it worth keeping ? If so where do I get the parts I need to get it to work Please ? This is over my head !
thanks for posting this vid. i bought 2 of this inverter board on a hail mary. Barely any docs... I cant source the transformer nor inductor. Sell them to me. Lso, can you demonstrate how to test without transformer?
I have an inductor for sale on ebay. I used a T211688 Buck-Boost Transformer, 1 Phase, 60 Hz, 7.5 kVA, 120 x 240V Input, 12/24V that I bought off Amazon. I don't have it anymore though
Thanks for the video learned something new. I'm building a powewall with 18650 Liion cells and i need 5000w inverter. These are too expensive in here, is it possible to diy from scratch or convert 12v,800va sne wave inverter into 24v, 5000/4000w ?? If show please share. Because i can't buy from china 😑
I am in a Inverter 6000 W peak 3000 W continual modified Sine wave is it possible for me to upgrade this to 12,000 W peak 6000 W continual tool pure sine wave ?
hi i just have one of those inverter drive .put im having problem it run a motor put it only last less then half a minute can you help with that or do you have an email to help out my is 48 volts im wondering if they send me a damage one from china .all i want is a power full inverter that can do a freezer but i don.t wane paid 400 doalrs on a sine wave inverter .
Tks for all the info. Saves me a lot of time. I'm presently using a 24v 3000w version which works OK. Do you know how the Bat protection circuit works?... What does it trigger to shutoff. On the egs002 there are only a few inputs for signals... (temp, AC volt, current)... I'm trying to figure this out.
the boards i used had an op-amp circuit that monitored voltage and current and would kill the inverter if the setpoints were triggered. this was a pain in the ass though since it had to be calibrated while energized.
The series inductor is to filter out the high frequency switching component as the inter winding capacitance in the output transformer looks as an almost short circuit where without it Hugh surge switching current spikes pass through the inverter and can even damage or blowup the power mosfets. Transformer core losses can be reduced by either using a CRGOS core or under fluxing the core by adding more turns for the same voltage. You need to wind you're own transformers to get the most out it but you will have an inverter for life not the rubbish on the market that ends up in the bin in less than 5 years and cost thousands. They key is you can scale the size of the inverter and service the unit yourself and save a fortune.
yes, I had a 1500w cobra inverter (12v), it could run a 1200w kettle to boil water, but it couldn't take any capacitive or inductive loads. (would crap-out with a 600w digital power supply) high frequency inverters are crap for anything other than resistive loads, which makes them kind of useless for anything bigger than a laptop
....very interesting, have you written a White Paper on these, or published this on like the Instructables.Com Website? I'd like to read more about the details on how to set one of these up. Thanks, Alfredo. Alumni of GE Computer Services.
How much did it cost for the inverter and the pure sine wave control board I got a 50v dc generator I want to finish building I got the variable voltage regulator in the mail and now I need a inverter and a lil tip they have not Shure what to call it umm mosfet step up ac driver boards that are smaller and lighter than the hevy transformer
the board with controller was about 280, but it wont work without a big inductor and transformer, which cost about 300. I'm not sure what you are after, but generally, the cheap light-weight inverters are mostly mosfets, but they can't handle any surge current at all.
The inductor helps smooth out the switching noise and improves efficiency of the transformer. the voltage is not that important to the inductor, also, 48Vdc does not directly convert to 48V AC. but that isn't really relevant to the inductor, the value of the inductor is 4.7uH and gets hot because of the thin wires. thicker wires = more current
The chinese manufacturer you refer to is Sigineer. They sell through EVTV in usa and internationally on their own site: www.sigineer.com/product/96vdc-15000-watt-pure-sine-wave-inverter-for-tesla-model-3-lithium-battery-pack-module-120240vac-110220vac-230vac/
In the video I mentioned sinopoly, this is totally wrong, I meant sigineer. as in: www.sigineer.com/product-category/inverter-chargers/48v-inverter-chargers/
how good has the inverter been working for you
Just my observation.
Most of this video and the comments are way beyond my understanding, but I have been dabbling with inverters for a few years now. We are completely off grid in Orkney, Scotland and have used a Powerjack 8kw for about 6 or 7 years. Works great, but thought I’d better get myself a backup. I got the identical AliExpress board to the one in this video and connected it to a big toroidal transformer. The sine wave is not as good as the Powerjack, but everything in the house works perfectly. We generally draw about 150 to 250 watts at 240v ac, but occasionally it goes up to about 5kw for a while when cooking or washing clothes. It runs 24/7 and has been “on test” for about 5 or 6 months. Very little heat generated, a little when the boss is cooking. 😋
Ive seen 48V 10KVA inverter power PCB on ebay for only $217AU, not bad. Unlike most off the shelve inverters, These units require a large power transformer, to covert the voltage to service say 230VAC, this may sound expensive, but making an inverter this way is far more reliable, than the rubbish on the market costing thousands. Plus if anything fails its cheap and easy to swap out the invert board and of u go. You can choose what even battery bank capacity you want and its easy to make a massive UPS, you can add redundancy, add solar charging panels arrays. One trick for reliability is to never run the inverter at full current, use the limiting pots to protect the board. Another trick is to design the output transformer for high impedance, this is to reduce the maximum possible fault current.
A excellent video still you really need a part two. Honestly for me it is a learning curve and I hope you would consider a basic video on putting it all together.
the back shed .com has a bunch of inverter builds
The inductor is far far too small for 150A hence the cover melting off, at full intended load determined by you the series inductor should only get warm. The weakness in the design is those tiny dc power decoupling electrolytic capacitors between the heat-sinks as the high ripple current is the killer they dry out go open and the things blows up in smoke. you can solder large caps too bottom of PCB for backup, and never run the board at full power.
How can we calibrate the overload protection ( short circuit) trimmer pot? Is there a formula to calculate the resistant to be set in the pot for overcurrent protection??
Great video but some critical errors you made there.
1. Do not use the high voltage output of the transformer in centre tapped configuration for 120/240v output. There are nasty transients on the centre tap even when grounded. Use a separate buck transformer to get the 120v you need. I learned that lesson the hard way when most of my home electronics burned from the 120v output. You need to use an oscilloscope to verify a clean waveform after commissioning the inverter.
2. Removing the small transformer from the board is not good since those long leads to the inverter board will introduce noise that messes with the voltage regulation.
3. The inrush limiting toroid inductor is only needed for toroidal transformers. The softstart feature of the spwm card eliminates any Electrical stress during power up for El type transformers.
Hello instructor,
I saw your video demonstration and I want to ask you to teach me on how to use or connect an inductor to this type of Chinese inverter board.
Please is the inductor connected to the input of the transformer, to the board circuit any how? Or there is strictly an instruction to follow? Talking of the inverter board in this video as an example, thanks Engineer.
Hy what îs that big transformer? Isolation transformer în 230 ouț 230?
good video tutorial I hope you can post the block diagram and its electronic parts like spwm driver module,inductor, transformer etc.
How did you calculate the secondary current and how to select the wire size. Thanks
I'm interested in this approach, as I want to use a 36 volt battery and inverters for this voltage appear to be scarce and costly. I've spent the last few years repairing large-scale audio power amplifiers so this isn't too far from what I know well. I also have some very large toroidal power transformers which I can rewind.
I'm curious if the input current is proportional to the apparent or true output power. I expect it will be the former, so I would look into whether shunt capacitors for my refrigerator compressor and whole-house fan will reduce battery load by improving power factor to near unity. Thanks for your efforts, de AC4AQ
I tested the low frequency inverter that I designed but the out put is giving me 106v and when I connect filter capacitor of 5uf the out put dropped to 83v without feedback and when I connect the feedback the out put go up to 85v and the the feedback voltage is 2v minimum. What could be the issue while the out put can't go up to 200v. I used spwm module.
Thanks for your reply
Amazing video but please work on your camera work. Put the dam phone on a tripod or on something steady and you will have an amazing video
Hii
What is the upper limit of the battery voltage that can be fed to it? Limited by Mosfets and capacitors right?
hi sir . can you give information about the black cable and resistor going from the Lm IC to the 2110 driver ? please 🙏🙏🙏🙏
The links for aliexpress are broken. Can you please give us the name of these inverters?
Where you ger the inductance? Very nice video
any suggestions on sourcing these transformers? I think some have actually wound their own transformers. Great project/video! Thanks
i got one of these from amazon usa www.hubbell.com/acmeelectric/en/Products/Electrical-Electronic/Power-Quality-Conversion/Buck-Boost-Transformer/Buck-Boost-Transformer---Single-Phase-120-X-240---1224V-7-5kVA/p/1655918 its called a boost transforrmer.
Why is an inductor used in a toroidal transformer? For example 500W and 800W what value can I use? How to calculate values for each capacity?
Hello . Very interesting video .I've actually bought 1 of these. .48 volt .I wonder if you can help , it's all connected up .but I can't even get the led on the driver board or the led next to the feedback transformer to light up . Basically .the unit doesn't boot up
Thanks for your video could you please share the schematics for conect transformer thanks !
Yes it is cheaper but.... is any voltage regulations depends on a load....?
there is a feedback line that lets the controller know if the output needs boosted. Under load, the output is mostly pretty good, ranges from 237-241 Vrms
Very good info thanks for sharing appreciate it cheers.
I bought the 48v 11000VA Pure Sine Wave Inverter Board Power Frequency Inverter Board I was expecting to be able to just plug it in and use it not realizing I need a 47uh dr. And a 5KW-10KW 220v transformer I find out after receiving it ! I bought off E-Bay is it worth keeping ? If so where do I get the parts I need to get it to work Please ? This is over my head !
What are these yellow capacitors in that separate board?? Their rating??
What is the function of the smaller toroidal inductor ?
I am looking to build my own inverter board for my portable power station I am building.
thanks for posting this vid. i bought 2 of this inverter board on a hail mary. Barely any docs... I cant source the transformer nor inductor. Sell them to me. Lso, can you demonstrate how to test without transformer?
I have an inductor for sale on ebay. I used a T211688 Buck-Boost Transformer, 1 Phase, 60 Hz, 7.5 kVA, 120 x 240V Input, 12/24V that I bought off Amazon. I don't have it anymore though
Sir please can share the schematic i wont build my own....
Thanks for the video learned something new.
I'm building a powewall with 18650 Liion cells and i need 5000w inverter.
These are too expensive in here, is it possible to diy from scratch or convert 12v,800va sne wave inverter into 24v, 5000/4000w ??
If show please share. Because i can't buy from china 😑
Excellent....
I have to see video one more time....
I am in a Inverter 6000 W peak 3000 W continual modified Sine wave is it possible for me to upgrade this to 12,000 W peak 6000 W continual tool pure sine wave ?
This video is very educative bro.
Please how can I get this transformer shipped down to Nigeria?
Sorry, already sold
thanks a lots and long time I see I am waiting like this video'
Boa noite, é de quantos wates? Esse idutor aquece até quantos graus?
do you have a schematic of that board which you like to share with me
hi i just have one of those inverter drive .put im having problem it run a motor put it only last less then half a minute can you help with that or do you have an email to help out my is 48 volts im wondering if they send me a damage one from china .all i want is a power full inverter that can do a freezer but i don.t wane paid 400 doalrs on a sine wave inverter .
Very good info, thanks for sharing
Excellent video just I was looking for.... 👍
Does this red board have automatic voltage regulations AVR?...that would be awesome... 👍
I dont think they call it AVR, but it does have a feedback circuit from the out put to maintain a setpoint
@@erroneus could you just put a little fuse on the feedback wire?
How do you filter the output of these to sine wave?
Tks for all the info. Saves me a lot of time. I'm presently using a 24v 3000w version which works OK.
Do you know how the Bat protection circuit works?... What does it trigger to shutoff. On the egs002 there are only a few inputs for signals... (temp, AC volt, current)... I'm trying to figure this out.
the boards i used had an op-amp circuit that monitored voltage and current and would kill the inverter if the setpoints were triggered. this was a pain in the ass though since it had to be calibrated while energized.
@@erroneus I'm facing issues with this and will try to disable it.
The series inductor is to filter out the high frequency switching component as the inter winding capacitance in the output transformer looks as an almost short circuit where without it Hugh surge switching current spikes pass through the inverter and can even damage or blowup the power mosfets. Transformer core losses can be reduced by either using a CRGOS core or under fluxing the core by adding more turns for the same voltage. You need to wind you're own transformers to get the most out it but you will have an inverter for life not the rubbish on the market that ends up in the bin in less than 5 years and cost thousands. They key is you can scale the size of the inverter and service the unit yourself and save a fortune.
Hello, who can help me in designing such a board
Hi sir, can you please share what is the purpose of that big inductor? and what is value of that inductor?
It smooths out the square waves, I believe it is 47uH
Does it come with the inverter board? Or you provide it yourself??
Good video keep it up
did you try an inverter with high frequencty transformer ?
yes, I had a 1500w cobra inverter (12v), it could run a 1200w kettle to boil water, but it couldn't take any capacitive or inductive loads. (would crap-out with a 600w digital power supply)
high frequency inverters are crap for anything other than resistive loads, which makes them kind of useless for anything bigger than a laptop
....very interesting, have you written a White Paper on these, or published this on like the Instructables.Com Website? I'd like to read more about the details on how to set one of these up.
Thanks,
Alfredo.
Alumni of GE Computer Services.
How much did it cost for the inverter and the pure sine wave control board I got a 50v dc generator I want to finish building I got the variable voltage regulator in the mail and now I need a inverter and a lil tip they have not Shure what to call it umm mosfet step up ac driver boards that are smaller and lighter than the hevy transformer
the board with controller was about 280, but it wont work without a big inductor and transformer, which cost about 300. I'm not sure what you are after, but generally, the cheap light-weight inverters are mostly mosfets, but they can't handle any surge current at all.
Inductor size for 4kW transformer 48V?
Secondary winding is 48V exactly.
Is that a problem or not?
The inductor helps smooth out the switching noise and improves efficiency of the transformer. the voltage is not that important to the inductor, also, 48Vdc does not directly convert to 48V AC. but that isn't really relevant to the inductor, the value of the inductor is 4.7uH and gets hot because of the thin wires. thicker wires = more current
Is there a limitation if i want to add more transistors to increase power?
I have 2500W transformer and inverter board that have 8 transistors
HY4008 .
the weird part is that the speaker hand is white but his foot is jet black at 2:31
Very cool .
VIBRAM FIVEFINGERS!
The chinese manufacturer you refer to is Sigineer. They sell through EVTV in usa and internationally on their own site:
www.sigineer.com/product/96vdc-15000-watt-pure-sine-wave-inverter-for-tesla-model-3-lithium-battery-pack-module-120240vac-110220vac-230vac/
New sub here upload more updates would be great! :)
Drop test :D :D :D Good video!
Preciso comprar uma dessa
Survive the drop test kkkkkkkkkkkkkkkkkkk 2:29
can you do it with high voltage dc like 400v
Yes, but not with this board. There is a schematic in the datasheet for what you are looking for. Need HV fets and a large inductor