A whole lot of buzzwords and techno jargon, but zero details or explanations. I give the video a solid 2/10

No technical details? No test results? No power curves?

@user-ox6nc6ly7f

Ай бұрын

because not patented yet.

@Slappy901

Ай бұрын

@@user-ox6nc6ly7f watch video at 7 seconds in. lol

I appreciate your upbeat character and warm spirit that raises my intellect to new heights and you do so with a high efficiency with a liberal and advance master of the best thesaurus. You do have some great speaking skills but need to dive in deep concerning the details of DC to DC converters.

Fluff. You didn't even say how much power the device - or device design - could handle.

I don't think this is particularly new though. It looks like its just a synchronous buck converter. A good one, sure, but... still just a synchronous buck converter. Hard to tell since you didn't describe the actual circuit design. Note that the high-efficiency path is only going to be in one direction... its hard to get high efficiencies with a boost converter. You only really get them with buck converters. Also, large voltage differentials reduce the efficiency. DC-to-DC buck conversion is an inherently efficient process. In fact, if you look at run-of-the-mill solar charge controllers today such as Victron, those operate at efficiencies of 98% to 99% right now. And they have huge input voltage ranges. Current-day string inverters and micro-inverters such as enphase also achieve roughly 98% to 99% efficiency converting DC to grid-tied AC. That works because grid-tied micro-inverters are current-regulated devices rather than voltage-regulated devices. In fact, charge controllers are too. It is easier to tune the magnetic components (such as inductors) in a current-regulated design, and a lower switching frequency can be used as well... which all translates to very high efficiencies. Current-regulated designs do have some warts... the main one is relatively poor voltage regulation. That is, the output voltage or waveform can jerk around a bit as the load changes. But the cool thing about it is that you don't really care if the output does this in a grid-tied or charge-controller use-case because they are connected to the grid or to a battery, both of which are extremely low-impedance black boxes. Since the impedence is practically zero the voltage can't be moved all that much and it winds up just being a matter of current flow. -Matt

@davidpacholok8935

Ай бұрын

Matt you are On Target!

i'm working on it , but my electronics knowledge are limited. input: from any source. output: fixed or adjustable. to me, smps looks dumb.

An input of 12VDC significantly enhances energy efficiency with a 12VDC output load, enabling reduced system complexity while supporting sustainable 12VDC power solutions.

KZread does KZread things... I don't know why this video was recommended for me. Basically this is a PR advertisement for some lab at a university. It's great that they do what they do - I just received my masters degree with a side specialization of a power electronics lab just like this, doing incremental research on tuning well known designs. But there is nothing new here, no breakthrough... Please do not spam us with useless ads.

@davidpacholok8935

Ай бұрын

Speaking as a 40+ year veteran of the power conversion industry, you are completely right. In those 40 years I got about 30 patents. One of them may have been something truly new, but certainly nothing world changing. We stand on the shoulders of giants long dead.

There is no need to add this many cuts between phrases on a stationary camera.

Google this... Over 98% Efficiency SiC-MOSFET based Four-Phase Interleaved Bidirectional DC-DC Converter Featuring Wide-Range Voltage Ratio

@davidpacholok8935

Ай бұрын

Indeed!

I have been doing this for years. Many years. Perhaps I should also say that I am not all that special of a power electronics engineer. This is typical stuff.

@davidpacholok8935

Ай бұрын

Yep. Me too. Ditto and yawn.

i learnt nothing

more hand movments then details

Looking at the picture its almost certainly non isolated. Look at those big fat torrids! Smells Continuous Current Mode of some flavor. 4 channel synchronous buck boost converter perhaps. Inherently bidirectional and unfortunately non isolated.

@davidpacholok8935

Ай бұрын

And I wonder what the core material in those torrids is? Hopefully the designers chose that great Japanese invention Sendust, aka Koolmu. Then I looked at those pretty orange metalized film caps. At first I thought maybe some kind of soft switching or resonant switching energy recovery scheme. But given 4 torrids, 4 interleaved converters seems likely, but only 2 caps. Buss stifteners/HF bypass more likely.

@davidpacholok8935

Ай бұрын

Now the Red PCB at the left is presumably the controller and gate waveform generator. Perhaps they only turn on one converter at light loads, 2 at higher and so on. That would keep each converter near its sweet spot of efficiency. Now if they are Really Clever they would alternate among all 4 converters with only one on at a time to minimize heating of one converter. That might be good for a few tenths of a % efficiency. My own thinking is that 94 vs 98% is almost meaningless in terms of energy conservation. However 98% is Huge in terms of having to dissipate only 200 watts from a 10KW converter instead of 600! That saves weight size and $$$. In some applications it could make the difference between simple air cooling and $$$$$ liquid cooling. Or heat pumps.

So many words to say nothing.

@davidpacholok8935

Ай бұрын

LOL!

What was she actually selling to us? Religion?

I'm not an electrical engineer, but the video just throws some buzzwords again and again, no content. Sorry, it is like the entire thing is fictional, made only for the views (I hope not)

When trying to fool people using AI fails!!!

Blah, blah

ChatGPT, write me a few paragraphs on how DC to DC conversion improves efficiency….