Intuitive explanation of the three phase Vienna rectifier

[@basaltnow]

the first Video I saw about the almost forgotten and not well documented Vienna rectifier, absolutely stellar.

[@sambenyaakov]

Thanks

[@hardrocklobsterroll395]

It was so intuitive I figured it out as the video progressed before you got to explain it! Another great video, much appreciated!

[@sambenyaakov]

👍🙏

[@elliamadadi]

Very clear, straightforward, and amazing explaination! Thank you very much and GOD bless

[@sambenyaakov]

🙏🙂

[@nachiketadeshmukh8444]

Thanks a lot, for sharing this! It is easier for most people to understand 1 phase circuits. You have successfully boiled it down to simple convepts.

[@sambenyaakov]

Thanks for comment

[@josepapagni8627]

Thank you, professor Ben-Yaakov. Perfectly clear.

[@sambenyaakov]

👍🙏

[@ruiqiang7816]

Really clear and straightforward explanation. Thank you for sharing this, I am working on my thesis which is related to this topology. The PFC series really save my life as your many other video series. Looking forward to the following video!

[@sambenyaakov]

Thanks Rui for kind note.

[@ruiqiang7816]

@@sambenyaakov Hello Professor! If possible, could you make a follow-up video about the 3rd harmonic injection you mentioned in this video? Thank you!

[@dipenvachhani9435]

Intuitive and simplifying explanation of the tricky and seemingly complex Vienna rectifier. Thank you so much Prof. Yaakov for this presentation

[@sambenyaakov]

Thanks for comment

[@ruixiong5237]

thanks a lot, professor. Your explanation is always clear and enlightening.

[@sambenyaakov]

😊👍🙏

[@Ferraday]

Prof Yaakov, the configuration described at 9:40 is drawn with a backwards FET, conducting in both instances.

[@sambenyaakov]

Hi, you apparently missed the notes I have added on this page: Please note: 1. In slide 12, the body diode of the MOSFET within the diode bridge is drawn incorrectly (upside down). 2. The hysteric control method (slide 28) also needs a feedback loop to overcome possible drifts of the capacitors midpoint voltage. See: www.pes-publications.ee.ethz.... 3.Other relevant Videos: Introduction to power factor correction (PFC) and control kzbin.info/www/bejne/qHrLn3WKe8pgY8k The similarity of Buck and Boost converter and answer to piggyback converter riddle kzbin.info/www/bejne/jHnKgGafaJ6AkNk 4. Keywords: Power factor correction, APFC, PFC, Boost, three phase rectifier, power electronics, line current, line harmonics, control

[@ats89117]

Another nice video. I wasn't familiar with the alternative circuit at 9:52 using a bridge rectifier for preventing conduction through a MOSFET's body diode before I saw this!

[@electrowizard2000]

Agreed. Though wasn't the body diode drawn backwards in this diagram?

[@robson6285]

@@electrowizard2000 ha yes Indeed, that piece of circuit will conduct constantly!😁

[@ats89117]

@@electrowizard2000 Yes, good catch.

[@sambenyaakov]

Just testing your attention😉 Thanks for pointing the drawing slip.

[@marcosfreire4155]

Amazing Presentation, Congratulations!

[@sambenyaakov]

Thanks

[@robson6285]

Wow what a superinteressting circuit! But i had bever understand it without this explaination. (Yes i finally have a new phone. Or in fact its an older one that i especially bought so i again can leave comments here. Because i missed the last riddle that i found an especially nice one and not be able to leave comments that moment i saw that may not happen again. Because, where on the whole world you van find electronic riddles?! Ánd the most interesting deeper level explainations and really surprising insights! Btw, this big pointer makes your words even more clear than the red coloured pen in the video before this one. While that looked great i find this moving pointer almost as if i see where you look while explaining and i find that a really extra plus to understand everything more direct. As if we see your hands moving while talking, or something like that. Thank you, again and even extra for those last ones, thanks so much for making these superinteresting and supergood to follow videolessons!!

[@sambenyaakov]

Thanks Rob for he observations.

[@alibargh]

Fabulous presentation, thank you!

[@sambenyaakov]

Thanks

[@footballworld6039]

Great presentation. Thank you!

[@sambenyaakov]

😊🙏

[@basaltnow]

it would be very nice to explain the SVPWM applied on the vienna as it is extreamly important especially useful for 800V super chargers.

[@sambenyaakov]

Perhaps. If you are familiar with subject what not post a video on that?

[@basaltnow]

@@sambenyaakov unfortunately I can not post videos, I am not completely familiar with the vienna control, that is a big problem. I had studied the Vienna many many years ago but when it came to the control, the papers and media all end immediatly at that topic. I know that a kind of SVPWM can be applied, but how exactly was never tought. The are some phd thesis on that topic too, Those phd are all comming from the vienba inventor who I think is professor at ETH zürich, today. I find the Vienna super important, but knowbody ever wanted it in the passt, maybe due to the unknown control? that xan not be that hard, I think I will go vack into tgat topic.

[@jurajmarek9175]

Many thanks for the nice presentation and explanations. Please, on slide 24 it seems that transistors in BD Switch are driven together - one control signal, however in slide 25 there are two control signals Si+ and Si- ?

[@sambenyaakov]

I guess this is how the bidirectional switch (two transistors) are driven for smooth transistions

[@esijal]

Thanks for the Great Video, The question is why Bridgeless bipolar APFC, that is a single phase of Vienna rectifier, is not popular and not being used for single phase PFC? I appreciate your answer in advance.

[@vanease1]

Hi Prof. Yaakov, very nice explanation. Is it a mistake of the symbol on the right hand side at 8:53? looks like the structure is always conducting.

[@sambenyaakov]

You have a keen eye. Thanks for observation. Yes, the diode is reversed.

[@BlkPanther]

The diagram at 10:10 is wrong. You need to draw the body diode from emitter to collector. The way it is drawin now, current can very easily flow through the body diode of the IGBT while it is the "OFF" state.

[@sambenyaakov]

Thanks. Yes, the body diode is wrongly drawn. Just checking your alertness😊Nobody have noticed, it even not Prof. Kolar, the invertor of the Vienna Rectifier. 👏👍

[@danialhp6743]

Why in Vienna rectifier we use 2 MOSFETs in series?

[@sambenyaakov]

There is a need for a bidirectional switch

[@AbdullahTariq98]

Why should the voltage on both the capacitors be kept equal? I understand that an imbalance on the voltage levels of the two capacitors causes an increase in the THD, but I don't understand how that happens?

[@sambenyaakov]

If they are not equal but stable, this means the the current feeding each is equal. This means unbalanced power between + and -.

[@arabindochandra5338]

Thank you Professor

[@sambenyaakov]

Thanks

[@dipakpatel9329]

Hello Prof. Yaakov, I have a question. When converting R-load to R-ac on the primary side for half-bridge & full-bridge LLC converter, is the formulae same i.e. (8/PI)*(Np^2/Ns^2)*RL?

[@sambenyaakov]

Yes

[@dipakpatel9329]

@@sambenyaakov Thank you for the reply. Love your videos and explanations.

[@evak7970]

Thank you！ im searching for knowledge about Vienna rectifier for my seminar, yr video is sooooooooooo great and clear! But I think u can give us some references to make it easier to find the papers u mentioned.

[@sambenyaakov]

Thanks. Regarding references, how about Google😊

[@lovey52747]

Thankyou Prof. for making this easy to begin with 🙏. Still trying to understand Gate pulses pattern with sinusoidal input any literature suggestion for this topology ??

[@sambenyaakov]

You mean resonant drive?

[@nin1ten1do]

i will try 2 lane ( 2phase) version look like nice rectifier to me for HF and high power aplication.. logick give us quote: more diodes = more voltage shortage but... there we go.. phase shift.

[@sambenyaakov]

Thanks for sharing your thoughts,

[@nin1ten1do]

@@sambenyaakov yes definetly i can't say much now.. but your Mr. Yaakov (hope i don't misspronounce) explanation went me to werry interesting research and help me finish after 13 year i actualy finish my project. what i hardly work on it.. your work lead me out of mainstream what i like a lot.. shame is,, last 2 generation folowing my was unable to do this stuff is noce we have ton of programe!s.. but nobady actualy understadn harware they programing one.. i am bit worry about 'silicon' future.. about that work i solving stuf here i have to *steal* frequency from energy income then split and phaseshift all those isgnals then use a tranzistor combo H or full bridge for rectifieing energy.., but harshly problematic part is gate.. too low voltage for some analog solution BJT is useles for this coz not gona make AB solution and IGBT was not actualy mot usible over 200Mhz-.. for good eficiency any idea??

[@tamaseduard5145]

👍🙏🙏🙏👍

[@sambenyaakov]

😊🙏

[@seanm2511]

61000-3 series isnt enforced in the USA! Land of leaded solder :)