Power Inverters Explained - How do they work working principle IGBT

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3 hours of your videos would replace my whole 4 year highschool education. Its just mind blowing how far IT has come. You sir are doing honorable work here.

You explained this 1000000000 times better than my lecturer. Thank you

I rarely comment but here I have to. I am an engineering student and I have to finish this assessment for next week, part of the assessment is to design an inverter that is connecting a solar pannel to AC loads. I must confess that until now I only had a vague idea of what an inverter is, but with this video I finally have a complete understanding of the working of such a device. Power electronics is clearly not my favorite course but at least you have made it comprehensible, thank you very much.

Just one word "Love" your work ! Amazes me what I lost in my Engineering and what I gain here and other videos of yours. Will definitely pursue my Masters after a gap of 15 long years working in IT. Thank you !!

What a gem this channel is. Understanding the concepts after so many years.. Keep up the good work. Thank you much.

Easily the best explanation possible, you've made me experience the joy of learning!

Amazing! You can explain extremely well and put a lot of work in this video! Appreciate it thanks you so much.

This so well done! Just what is needed. Nothing more nothing less. Even the voice is well balanced. Beautiful!

Had an inverter in the truck for ages. Never knew how it worked. Thanks for the video

In building my first electric car, this has been super helpful. I'd like to know more about the current load relationship between source voltage DC into the motor controller vs motor controller output after converted to 3 phase. I can easily get motor specs however I need to spec connections to the battery packs. Most connectors I find are rated at a far lower ampacity than I'm dealing with while utilizing a much larger conductor. 90mm2 vs my 50mm2 that was included with the supplied parts. Thanks again for making these videos very helpful and clearly laid out.

Very good for the basics of an inverter. Personally I used to startup AC variable speed inverters using SCRs as switches. The trick to using SCRs is the ability to turn them off, which requires a reverse bias. The IGBT came along later. The advantage for them is that they can be turned off by removal of the trigger signal. The advent of the IGBT significantly reduced the cost of the inverter and or AC variable speed drive. Note that all inverters wither AC or DC sourced, have a constant voltage DC Buss dependent on the value of the input voltage.. The DC buss voltage results in a constant Peak to Peak voltage. The pulse width modulation as described in this articular is used to vary both the frequency of the output as well as the output RMS (effective) voltage. When used for variable speed when powering an AC motor, constant torgue is maintained by keeping the ratio of the frequency to the RMS voltage constant. For a 460 VAC to 60 hertz system this ratio is 7.67 V/hz. Once the motor rated speed from a constant voltage/frequency system is reached, the motor speed can still be increased by just increasing the frequency with no further increase in voltage. This is called the constant horsepower range. Their is a limit to this as the torque decreases to a point where the motor will no longer run. An inverter and or AC variable speed drive with a 3 phase output has another advantage in that the motor rotational direction can be reversed by just reversing the phase sequence as controlled by the triggering sequence of the IGBTs.

I’m a pilot, just started flying as second in command of a Hawker 400 which has a much more complex electrical system than what I’m used to. So I came here to learn about inverters. Thanks👍🏼

I remember learning this in some electronics courses. The Toyota Prius hybrid had been using LARGE IGBT's for it's 3 phase motor. Napa Auto Parts training side had a fantastic course explaining how it all worked and more that was built into the system. Of course this video answers questions much better than the books I've read, and I thank you for this. If anyone is learning about DC to DC and DC to AC inverters and converters. That Napa course will give a lot of info, but this video is the start! I'm assuming people that see this video understand the basic theory that "When magnetic lines of force cut across a conductor, a voltage is induced in the conductor and current (electrons) can flow." Without this "working theory," we'd never have the great electrical and electronics we have now!

I use a power inverter while camping or as a emergency power supply during bad storms when the power goes out, your videos are phenomenal and brake stuff down so well to understand it

This video is really helpful for me. I was really confused when my lectured was talking about this with a slide full of strange stuff and a rectangle wave like a sine wave. I kept more confusing when he started to explain how it works. Thanks to yours video, i was able to understand all of them inside out. Eventually, Thanks a lots. From VietNam with love.

Best video ever. Definitely going into my saved Electrical Theory Playlist.

Really great videos! Now since you have several videos about inverters and VFDs, explain how the controller works please? It’s the thing that make everything work as beautiful as it does after all, thank you!

OMG thank you! You explain this so well and thorough, now I finally understand what inverters are and its used.

You’re very thorough in your explanations, and you do an extremely good job visually explaining topics for people who are more visual learners. I appreciate your videos very much.