Pure Sine Inverter Update - 500W, fuse, bleeding resistors and more

[@JonathanDeWitt1988]

Andrei, another excellent video. I'm glad to see you came back and addressed common questions. There were some good comments/questions that were answered. I look forward to seeing the revised design out someday. The video was very educational. Thank you.

[@hippie-io7225]

You have made a very excellent prototype! Learning about high voltages and safely applying them is a VERY important skill!! Your project creates an environment where safety skills can be practiced. I taught radar maintenance in the US Army. The first thing I pointed out to my students was the locations in the electronics cabinet that could kill them! None of my students were ever harmed! Thank you for such a good project. Suggestion: Consider placing a surge component at the output that could act as a "soft start". You might lose some efficiency, but the convenience would be awesome. My 400 W store bought inverter has plenty of power for a laser printer, but the inductive power surge from the printer makes the inverter shut down.

[@TheSorters]

There is a jumper which enables a 3 second soft start

[@golammustafa662]

I appreciate your project. Those who are elementary like me will learn from you. Thank you very very much

[@emrahinan1]

I follow your work closely. I benefited greatly from your work.

[@2202ROBERTO2202]

COOL!😎 If you make one from 24v to 220v 50Hz 3000w I'll buy it working, if someone else wants to buy you can make several in series and earn a few dollars. It is the best I have seen on KZbin, I have been watching videos for weeks looking for something reliable. It is as you say, the Chinese equipment promotes 2200w but the letters clarify that the nominal is 600w

[@freeelectron8261]

Great stuff. Looking forward to the updated invert pcb design!

[@REZOLUTIONER]

You can't use thet transformers in series, because output voltage will be 760V. They mast to be modified for serial connection.

[@ELECTRONOOBS]

Yes, I meant in parallel. My bad!

[@jamesfrancis8765]

You make amazing videos. Clear, accurate for components, very informative. Little verbal mistakes like the parallel/series mistakes could cause viewers to move on. Listening to your videos for five minutes should make it clear that it was a mixup from talking fast. Don't stop doing this! The world needs more if you. Good to know someone else was paying attention. Might be worth an audio edit. I caught similar mistakes in another video also, you keep saying 150v even though im sure you meant 120v.

[@ogbonnayakingsley4829]

Hello

[@ogbonnayakingsley4829]

@@ELECTRONOOBS I need ur contact

[@Mexzot]

Re: the solder on the tracks, Current is based on surface area, not cross section, so I could be wrong, but don’t think this increases the current capacity, but reduces the fuse speed of the track, by giving it more thermal mass. So only allows for more current bursts vs overall current. But I haven’t had coffee yet this morning, so could be having a mental moment ha ha. Love the project BTW…makes me think about adding voltage sensitive relays on the input for battery protection, maybe even some more switching points to enable a control system to be built around it. Or external frequency synchronisation to run multiple in parallel with redundancy for high loads Hmmm mains sync and either full online and or switching for a high end UPS capability…thanks so much for all this food tor thought!

[@mrj2848]

You wrote crap.

[@Mexzot]

@@mrj2848 ha ha…care to elaborate your comprehensive feedback seems to be missing some detail 🤔. I guess I was a bit vauge, but I was refencing the skin effect: en.m.wikipedia.org/wiki/Skin_effect#:~:text=The%20electric%20current%20flows%20mainly,resulting%20in%20less%20skin%20depth.

[@JaenEngineering]

​@@Mexzotthe skin effect is frequency/voltage dependent and is the tendancy for AC current to prefer to travel closer to the surface of a conductor as frequency (or more specifically the slew rate) increases. However at the switching frequency and voltages used here it shouldn't be of too much concern and is of no consequence at the 50/60Hz output or the DC input.

[@mrj2848]

Dude you just wrote a pile of shit

[@Kapalek84]

Very nice video. Hope to see further versions of this inverter prototype, it is good way of learning and is super interesting!

[@ELECTRONOOBS]

Join my Arduino Course (Spanish): bit.ly/2JY8icE My Tools: bit.ly/3uv8bc3 Help me on Patreon: www.patreon.com/ELECTRONOOBS

[@khaleef_hrm]

How was 3 transformers connected in the Inverter @07:23? Can you do a video to explain that please? I already read about 2 or 4 in Series/Parallel but not 3.

[@electrotsmishar]

Thanks for the video. Learned a lot of benificial knowledge from you. Also, the efficiency will be higher I assume if you consider power factor due to the LED driver circuit

[@alfatihid8901]

great answer and evaluation, we will waiting for next project

[@fakhrealam2008]

Hi, let me know how I can get assembly PCB, schematics and link to other document, appreciate your help and support, love your video and inform.

[@MrDomingo55]

I would take issue with statement that to increase overall power one needs to use additional input transformers and associated circuitry in SERIES. Perhaps physical arrangement may look like that they are in series but electrically, the outputs are wired in PARALLEL to provide much higher current overall for the next stage.

[@MiniLuv-1984]

An idea for a future project that will be very useful for those of us that have a grid tie inverter with mppt. It would be useful to feed power in to the mppt inputs to mimic a solar panel array after dark. For me, specifically I need a DC to DC boost inverter to convert the 48V battery (15s LiFePO4 bank) to 120 - 385V DC with programmable current and/or voltage output so only the required power is fed in to the grid tie inverter. This proposed inverter can supply 500W assuming the inverters can be paralleled to to achieve higher power from the batteries if needed. In addition a inductive current sense input so I can connect an inductive loop on the neutral leg of the mains input to the house to control the inverter power so that grid power use is minimised.

[@mortyrickerson6322]

Dude this channel is frickin epic

[@ELECTRONOOBS]

Thanks so much!

[@A2an]

Series 😊But we know what you meant, also you confirmed with more IGBT 😊 keep up the good work 👍 Don't take the criticize to personally.

[@wliterow]

thank you for your excellent design and lecture where can I get the PDF of the Schematic

[@ZaheerAhmed-iw1ur]

Who is waitng for next update

[@snipersquad100]

I ordered my board today.

[@blackngold2009]

Any more updates? Been a year since this video was made.Thank you for your work in this project.

[@gauravs3991]

I love this channel …

[@jstro-hobbytech]

Great achievement brother. These things are all about iteration and you can't bodge a wire and call it a day for something like that

[@ared7909]

Excellent Video! Great answers to all the questions of the previous video. Have you thought of using a boost converter instead of the HV HF module?

[@adelekezakariyau2085]

This is excellent video, please make a video on how to put dc-dc converter in series. And pls make Bill of components in excel form with part number

[@donaldhoudek2889]

Good video! I purchased that 500w Inverter Boost Board Transformer Power DC 12VDC to AC18, 220, 380, but only needed the 18VAC output for my project. Well that was a big mistake! I received the unit and wired it to my 12VDC/265Ah batteries and there was nothing. Verified the 12VDC on the input on the board, but there was absolutely "0" volts on any of the outputs. I had it sitting on my workbench for a few months before testing it, so it was to late to return it. Afterwords I noticed that there were a number of reviews with the same issue that I was encountering. I still want to trouble shoot the board to see if I can isolate what the issue is. How hard would it be to come up with a 12VDC to 25VAC/3 amp inverter. I could probably purchase the base for the windings and wind my own, but I would have to try and figure out the primary and secondary winding ratio and the AWG of the wire to use. Bummer!

[@fakhrealam2008]

Very nice, thank for sharing.

[@baraboyss9108]

pada video sebelumnya, berapakah daya yg dihasilkan oleh inverter ?, dan apabila ingin meningkatkan dayanya apa saja yg harus saya ubah ?, mohon dibalas in the previous video, how much power does the inverter produce?, and if I want to increase the power, what should I change?, please reply

[@PsalmFourteenOne]

Awesome. *I'd like to see a BLDC board made to run higher voltage motors (240V) using back EMF* 👍

[@ThomasAndersonbsf]

I have been following for everything outside that module, as there are plenty of info bits on a code pack for arduino that we can control its rate and speed with PWM'd for pure sine wave output, and I really want to have split phase (110+110=220vAC) triple phase, and a way to make step up high voltage for distance sending it, and step down after arrival back down to usable range, all from off grid energy production :) (get out of the city and get some chickens, learn how to do things and hoard skills and info :)

[@pantherat2323]

How did you manage the heat generated by the transformer

[@goodnightmr5892]

Hey brother! Just checking it! 👋

[@XXXXIndices]

I have built many inverters using the EG8010 chip that is available separately. The frequency does not have any feedback but it will not change regardless of the load. It remains constant as the crystal connected to the EG8010 is what controls the frequency.

[@jodyvett23]

How durable are they. Plz would really like to know

[@XXXXIndices]

@@jodyvett23 Been running my house 24/7/365 for over 7 years now, so they are durable. It pays to have genuine IR2110 MOSFET driver ICs, they do the heavy lifting and the EG8010 just provides the signal.

[@ShubhamPrakash-my7cg]

​​@@XXXXIndicesHi Sir can you please me how I can contact you . I need your guidance to make my own inverter. I can pay you for help .

[@PeacefulWorld]

Sir i want ro contact with you please

[@andremantovani]

great!! is there a way to make the output selectable beteeen 110 or 220?

[@ThinkingFurry]

I guess put a variac at the output

[@yasirshahzad3732]

Great Video. Can you provide some reference links on how to connect three transformers in series?

[@burakokumus6040]

Very nice work! Congrats!

[@tonygiguere2495]

Great project :)

[@lezbriddon]

at just after 22:24 you say to increase the power you will need more transformers, you say to connect them in series, I think you mean in parallel? if you add them in series wont you be then making 400v or 600v for the switching stage?

[@Zikeyboy101]

I noticed there are different types of egs002 board. Can you please test your inverter with the board 20150901 instead of 20210501 that you have, and let's see if it works? Cos mine didn't work, I get 3 led blinks (over voltage)

[@josederibamarduarte9292]

Hi friend, have you this exemplo in 60hz?

[@EriccoInertialsystem]

Great, but I was wondering if you know anything about accelerometers and inertial navigation devices besides these？

[@bdtp]

First i am sorry for my bad english...! Some important questions for me, please answer me. Why we need isolated 12v for egs002 boad and why you connect a feedback in form output to egs002 board. Because you already connect a feedback from 450v capacitor to 3525 ic circuit.

[@yaghiyahbrenner8902]

I would recommend using a Microchip dsPIC33 or TMS320 evaluation board and build your own control circuit. The EG8010 is okay but has some serious limitations.

[@ShubhamPrakash-my7cg]

What are it's limitations can you please tell?

[@daniel0191bg]

Good clarifications, but take into account that a the dremel won't be consuming 180W in free running, the best would be to actually measure the power

[@ranganatennakoon]

very cool project !

[@stephanc7192]

Great video

[@wilsonafuevu9036]

Thank you very much, I was wondering your feedback for the SG3525 circuit, i noticed that the pin 2 was pulled to ground through a 10k resistor only, how does the circuit regulte the voltage to 380v directly

[@aksal60]

No regulation here. Not necessary and would reduce efficiency if you did. Only on secondary hi voltage side handled by the egs002. But most inverters do have a voltage monitor though and would shut itself down if outside specification. Either hi or low. Sometimes done by simple comparator or even even sometimes a micro controller.

[@temidayoakinshola8243]

Awesome vid bro..

[@golammustafa662]

Sir, another video will make about 3 to 4 kw solar inverters which are now being more popular and pretty expensive.

[@raphaelgilles6721]

Nice Project! I built your project and the inverter creates 220V but the transformer of the high voltage generator makes loud switching noise. Also i´ve noticed that the original board of the high voltage inverter has two different resistor values. For R24 you are using 10R. This Resistor has a value of 100R on the original Board from aliexpress. Also the Value of R23 differs from your design. You are using 33K and the value of my board was 3k3. Do you have any idea why my HV converter makes so much switching noises? Thanks in advance!

[@PeacefulWorld]

Developer forgotten to add Dot after 3. I mean it should 3.3k. As he forgotten to add dot, thats why mentioned 33k. But see in the video Resistor Color. Its 3.3k. Not 33k. If you add 33k then obviously it will make Noise because this kinds of Transformer need minimum 15KHZ and when you use 33k resistor then PWM will make 2KHZ. Hope you can understand.

[@fredhand6019]

If you can do it on your new design for your bored try and separate the capacitors away from your heat sinks and anything generating heat they will live longer you'll have less problems with your capacitors

[@RogerTannous]

On the board design thingie: there are capacitors behind the IGBTs, how are you planning to put the heatsink!

[@a.stepnick6755]

The inverter project is great but please make a another video on how to make a modified sinewave inverter using the sg3525 or tl494ic

[@ВладимирМалыгин-л7ч]

The fuse is good. but I think it's worth adding an electronic fuse. yes, this will increase the size of the board and the cost of the product, since this requires a separate shunt, an operational amplifier, a mosfet transistor and an rs trigger and accompanying strapping. all this will protect the inverter together with the dc/dc converter. and most importantly faster than a conventional fuse, which in turn works as the last line of protection. perhaps some of what is written is not entirely clear, but the main one is clear. I don't speak English, so I used a translator for this text.

[@freda5344]

what is the point of putting yet another electronic switch on the input, and you will need more than one too, and so losses, when you already have correctly sized (i hope) switches as part of the dc/dc converter, you just need a fast response to overload to switch those off. Last line of defence should be a hefty real fuse, just in case that doesn;t work or fail.

[@user-e3q]

I have followed the same EGS002 module and EG8010 datasheet schematic of low power frequency transformer for making 500W inverter. Currently I am facing an issue with voltage loss under load condition that is initially when I turn on the Inverter, it starts smooth with 230V 0.5A AC but as I connect the load of 100W its voltage drops to the 110V and starts decreasing gradually. Same issue happening with the drill machine, when I trigger the drill machine voltage starts decreasing. Please help me to resolve this issue, ands feel free to reply if someone faced the same issue previously. Thanks ;)

[@SaranaAlat]

What your software desing ?

[@mesutgul7668]

Would it be a problem if there is no feedback in the SG3525 circuit?

[@noone-bw8cf]

Hello Electronoob, I need help. I followed everything that you have taught in the previous part, got the schematics rights followed by a pcb design; however my inverter didnt turn on. Instead my mosfets got blowed up. I don`t know why my mosfets got shorted, how do I figure this out?

[@hectorbarrera9496]

Hi! nice video, could you share the calculations steps for the smps step up transformer?

[@sudheerkumar5966]

Very good sir

[@electroonext]

amazing.

[@korneo7636]

Would it be possible to make the input supply range to max 20V DC? I would like to add a drill battery to supply it

[@braydengambell4386]

You should make/sell build it yourself kits 120v/240v that comes with the PCB, instructions and the components to build it. I would definitely buy it

[@braydengambell4386]

Also love this channel

[@ELECTRONOOBS]

Till I don't make sure it works perfectly, I don't plan on selling anything :)))) Thanks!

[@DoK_ToP]

Good afternoon what value in MH should be 1 x 2000W Inductor this item

[@lucacappelletti6256]

can you add a grid tie feature?

[@vengug7303]

Hi Sir Thanks for sharing ....how to select the output inductor please

[@c.schandra2134]

For booster should what are problem associated with full bridge driver instead of push pull

[@nataneilwilson7231]

If the power of an inverter is 4000w and the input voltage is 48vdc what will be the shunt resistance?

[@rjsc]

Why did you choose to use IGBTs instead of MOSFETs? IGBTs have a fixed voltage drop between collector and emitter, MOSFETs present a fraction of an ohm resistance between source and drain.

[@TheSorters]

I understand some IGBTs can handle much more current, like 100s of amps if needed

[@petch41]

Just an idea but what about making them stackable. So if you need 1KW just use two with a clock link like the Honda gensets.

[@AkashBagFEce]

please make a video on just newly lonched arduino uno r4... waiting for it

[@shadmehraria5473]

What type is the output inductor?

[@DoK_ToP]

It would be nice to show how you can increase the power.

[@fastshiftauto8941]

Make a video showing how to increase the power output

[@markhonea2461]

Putting the heat sink in that configuration ensures that the farthest MOSFET from the fan will be the first to show thermal damage.

[@arvinbaba]

What is the material of LC output core ?

[@enoquebarbosa8801]

Fazer um ponte h senoidal 2000w separado conversor dc para dc

[@josepeixoto3715]

omg... u said "the dremel is 150 watts" but i thought that the dremel watts DEPENDS on the load YOU put on it,or not?

[@khaleef_hrm]

How was 3 transformers connected in the Inverter @07:26? Can you do a video to explain that please? I already read about 2 or 4 in Series/Parallel but not 3.

[@ELECTRONOOBS]

I don't have a schematic of that commercial inverter, sorry...

[@khaleef_hrm]

@@ELECTRONOOBS Okay thanks.

[@cipry1010]

A good improvement would be to use an isolated dc-dc converter to isolate primary and secondary grounds because it may shock you if you touch the battery leads. Get the feedback from hv dc with resistors,optocoupler and tl431. I can give a schematic as reference which I build and works and have better efficiency. And go for 24 or maybe 36,48v for more power.

[@freda5344]

yes the hbridge igbt driver should be isolated, either with driver transformers or hi speed optoisolators

[@nasrullahchughtai6408]

Make a video on off grid inverter. I mean only solder plates use....

[@jameshancock]

Is there a way to make it do split phase?

[@jameshancock]

@@TCreationsk One would assume that on the inductor at the output you could just center tap it and get 120 + 120V like North American Power. It would be interesting to see someone doing so.

[@ireshsameera-w8d]

inverter 300vdc -400vdc dc to 230v ac converter .. then we can add more transformers and make more power full one...plz plz

[@vinodvinees1629]

Why don't u add in this pcb charging circuit

[@republicoftutorials6068]

What about short circuit ?

[@josederibamarduarte9292]

Hello, is possible to share the schematic, pls?

[@MrYevelnad]

It would be good if we can make pure sinewave UPS out of this.

[@gregorybolin4672]

Its still 60 percent isnt it ?

[@saruthapa2732]

Anyone know, can EGS002 driver board produce 100khz ?

[@nasrullahchughtai6408]

with out battery.. Thanks..

[@debojyotibhattacharjee483]

22:23 it should be in parallel..

[@ELECTRONOOBS]

True, sorry for that!

[@quickquote1568]

Come on dude, nobody buys high frequency, transformerless inverters anymore. They offer far shorter life expectancies and a far poorer peak power capacity when compared to low frequency, transformer based inverters.

[@amrmohamed3842]

Its true

[@yoppindia]

Battery charger and changeover circuit from ac to inverter.

[@khaleef_hrm]

Great design! But it could be smaller making use of SMD parts.

[@sc0or]

12/300 transistors need a bigger heat sink than igbts for pwm because of bigger currents and higher switching freq. Instead you copy/pasted a switching PSU layout from your head. Thus…

[@cisarvialpando7412]

Link of the gerber files so we can make this at home

[@learm67]

Why I get shocked from my soldring iron

[@Europeanslave]

heat sink ? just put it in water

[@sammin5764]

🌷🌟🌷🌟🌷🌟🌷🌟🌷🌟

[@ireshsameera-w8d]

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