EGS002 Inverter Module Overview | INV3

[@gamvin2107]

I drive my sinewave inverter like this. One side half bridge is spwm 20khz on the highside and complementary on the low side. The second half bridge is driven by a 60hz in complementary fashion as well.. In the fisrt half cycle the output will zero at ground level both lower mosfet turned on.Then on the next half cycle the output will zero at positive rail, both highside mosfet are turned on.Doing such technique will give us a full Unipolar switching...It is also doable to zero the output through ground rail every half cycle..That is what we call semi-UNIPOLAR switching...I prefer the full unipolar switching because it is more efficient lesser heat and stress on mosfets .Try it guys.

[@Ahmad-gn1pd]

Its my honor to support you before you hit 1 million subscribers

[@EEforEveryone]

Thank you Ahmad! I appreciate it!

[@ShaunDobbie]

I may use this module to make a 400v DC to 230v AC inverter. The 400v would come from the battery in my electric van. And you deserve more subscribers than me.

[@yaghiyahbrenner8902]

I like this module, simple get to the point approach.

[@hichamtassi1753]

Hi there. I did the classical circuit from datasheet along with a ups transformer but above 200vac, there is a voltage drop under load, no more regulation. Any idea why ? Thanks.

[@jstro-hobbytech]

great video brother. honestly.

[@monimi1]

Thank you for your interesting videos. I have an old sine wave inverter 12V 1500W, unfortunately the control of the MOSFETs no longer works. That's why I built a circuit with EGS002 as shown in the EGS002 data sheet. There 4 IRF3205 are controlled. However, my inverter has 36 pieces of IRF3205, there are 4 groups of 9 pieces each. I controlled each group of 9 pieces with 1 piece 4.7Ω resistor and 1 piece diode IN4148. As a pull-down resistor I used 7.5K for each group. The inverter works with this circuit. However, if it is loaded with more than 320 watts, the voltage collapses. Can you give me a tip what is wrong with my circuit. Do I have to drive each individual transistor with a 4.7Ω resistor + diode IN4148 and a pull-down resistor? Only 320W with a 1500W inverter

[@eliasc6877]

Prueba con una resistencia pulldaw de 20 K de este modo subirá el voltaje en la puerta... Ya no de 7.5k

[@shubhamupadhyay1781]

Which software contains this module ?

[@zeeebeee1511]

Does this convert 12v DC to 12v 0 12v ac? Or there are other things needed? If so, how complicated may it be to convert a 12v DC to 12v 0 12v ac? Thanks in advance

[@EEforEveryone]

Hello! The module is only the controller- external power MOSFETs, caps, and some supporting filter components are required to do any conversion. Once it's set up- the output voltage and current limits can be programmed with resistors- I expect 12vac would be quite easy to achieve ( in comparison to higher voltages) I'm betting that you could find off the shelf parts to get the job done as long as the currents you need are in the 1-10a range It would certainly take some research to set up correctly if you're not familiar with inverters- but there is a reference design for such boards available from the module manufacturer And other people that may help a lot.

[@eliasc6877]

Alimentas al inversor con 12DC y el ESG002 enviara una señal de voltaje a la tarjeta de potencia y este enviará otra señal de voltaje de solo 8v AC al transformador que debe ser de 7v/220 sin tap central o 7v/110

[@timh2870]

Sure, it works well enough as-is... until it doesn't. The weakness of the EGS002 is that it is configured to switch the 22khz on one side of the bridge, as opposed to driving both low legs and switching the high legs at the 50/60 Hz. At 390V DC bus this pushes the dv/dt of the floating driver pretty close to the edge. Inductive loads and fast changes in output tend to make these things explode. The disadvantage (if you can call it that) of bipolar operation is that you need two output filters. Add some logic to confirm the EG8010 is up and running before soft-starting the HV and you should have no worries.

[@yaghiyahbrenner8902]

I would have used something from Texas instruments like the c2000 series, and get a copy of the firmware that they supply. But he is still learning so I guess that's the point too.

What did you men with the pwm driving? Maybe the 22-23khz carrier is a bit low and it makes for huge choke inductors on the output, lowering general attainable efficiency but it kinda makes up for less gate energy requirements and easy parallel mosfet configurations. I really didn't get what you were saying with high side fets and low side ones being driven pwm and 50/60hz. Driving fets or bipolars with a sine wave will cause huge power losses, reducing efficiency to less than 50%.

[@bjtaudio]

I can tell you it does not work that well, when driving non linear loads such as dc power supplies or as a triac controlled heat shrink gun that does not switch symmetrically , it causes horrible distortion dc offsets, so bad it can saturate you're transformer and inverter will shutdown. The board does not control each pwm pulse to compensate for irregular loads it just looks at the rms approx value and increase the drive to maintain the rms out. It works fine with resistivity loads and inductive loads motors. Don't use the board on voltages above 120V as the track clearances are too close, its good for 48V inverter boards.

[@EEforEveryone]

Hello bjtaudio! I'm a little late to the party... but this comment has been rolling around in my mind. I did some playing around in the shop trying to highlight the distortions you mentioned. I totally agree on the clearance/creepage... I always feel like I'm cringing with this board powered to more than 50V.... expecting an arc somewhere. :) I hope to hear more of your thoughts in our follow-up! Should be interesting!

[@ojwilks]

Do you happen to know what the differences are between the EGS002, the EGS005, and the EGT003 boards (all found on eBay)? Also it looks like You Tube deleted my last comment since I put a URL in it, but did you see the Github project called '4KW 230V-Inverter' where in the README they show about a modification they did to the EGS002 board to help it handle peaks better and not blow FETs? Perhaps you could review that and give your thoughts on it. They said the following: "And now for the modification on EGS002. With this modification the inverter can handle current peaks. So hopefully, no more blown FET’s." and: "With this mod, the SPWM enable pin, can enable and disable the sinewave out. (Same as the Temp method, but the right way to do it)." Thanks for the video BTW...

[@varshaunnik8803]

Can you please explain how can we overcome the overvoltage problem in the module

[@pashko90]

Dude, you have very nice KZbin channel, it's a shame what you abandoned it :(

[@ayoung788]

hello my friend should we use a totem driver with this board to drive over 8 fets in a hbridge. I appreciate your reply thanks

[@francoisBonin-phils]

i drive 12 IRF1404 in my H-Bridge , but it drives a step-up transformer i did this after a PS inverter made in china worked only for 2 month!

[@nwaigbo3]

Hi friend, which "dead time" is more convenient

[@EEforEveryone]

Hello Nedu, choosing the correct dead time is an optimization problem that will be affected by everything from the MOSFETS selected to the physical PCB construction. In general, starting with a lot (to avoid shoot-through) and dialing it into a more optimal value is not a terrible way to take an experimental angle. Backing that up with calculations and simulation will help a lot! Here's a related article! www.ti.com/lit/pdf/snva815

[@eliasc6877]

Pero la placa egs002 ya viene configurado en todo... Te da el plano, los mosfet, y el tiempo muerto recomendado

[@francoisBonin-phils]

It works well for me except that i did not find the jumpers to switch to 60hz .if someone could help me i would be much obliged.thanks for the video

[@varsharajesh3268]

It is mentioned clear . See data sheet

[@allenscott7893]

Jst a quick question, anyone know how to turn on a Delta dps-750ab a power supply?

[@smartups1]

Make a video on tds2285 sinewave inverter ic .

[@Mr.Leeroy]

Any follow up?

[@EEforEveryone]

Hi Leeroy! I did a couple videos, but apparently those got scrapped! I built up a little inverter dev kit based on the module... I should probably put recording that back on my radar for filming. It was/is pretty cool!

[@Mr.Leeroy]

​@@EEforEveryone Yeah it really looks like too good to be true on paper. YT really needs new talents in EE section who can present their projects on par with big name channels (you basically got that part) but who could focus on more complex and ambitious subjects like this video and not just primitive basic projects. I'm talking about stuff that makes you think hard and debug, and not give up upon first failed attempts, you know?. People love to watch that, and there's not a lot of content creators who try.. Feel like you could have what it takes.

[@EEforEveryone]

Aha! Have you happened to see our ups series(s)? I totally agree. It's great to really dig in to a big project! I appreciate your kind words! It's great to know there are some folks like you in the audience!! It can be hard to pick that out when the average watch time on a video is less than 1/4 the duration. About this module, I've seen some interesting comments regarding how it handles reactive loads (not well) and it's insufficient creepage distances. It may be fun to expose these limitations in a follow-up!

[@Mr.Leeroy]

@@EEforEveryone I'm new, have yet to check all uploads. Don't fixate on stats much, they can be interpreted very subjectively and far from viewers POV.. People will watch if your channel and work makes sense as a whole. And its grows is usually exponential, so I'd not worry about individual things in the beginning and concentrate on producing content that's best for yourself first. Not that I have my own experience at that, but I definitely have a tendency to mindfully spectate dozens of channels' evolution during the span of years even though I was never interested in developing my own. I'm sure this module is fine for use with 12-24V Pb battery source and transformer for couple hundred watts. Ofc, if one requires some specific load that exceeds its limitations, there has to be at least an effort to adapt the PCB as it looks like a reference design for some general purpose application oriented OEM production.

[@ptchmai]

too mush talking.

[@uzairaezad7630]

*Chinese build something Others: I dont know how to explain this but wow Muricans: ...but I smell human rights violations from the pcb

[@EEforEveryone]

Oh man! I didn't realize my 'murica was showing. :)