Hi everybody, is there someone reading this and joining the finalists event in Colorado at the NREL? I'm just scheduling my flights. Are you going to attach some more days, taking a trip around the city or party the end of the challenge? Should we try to create a list of the finalists? At the moment, there is non from Googles side. Best regards from Germany, Stefan
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Hi Stefan - do you know if all finalists have been informed? I can only see yourself (Fraunhofer?) and CE+T so-far...
Hi, there are two (independent) Fraunhofer Institutes, the IISB and the IZM, joining the final tests. I don't know whether alle finalists have been informed the same time.
Hmm, this topic did not work as i expected ;-) Google finds this page here, but the other participants don't seem to search for the other finalists. Or more likely, they just don't want to reveal themselfes. (But why?) Anyway, i think this will be a very interesting day / event.
Hi my 2-man team (Tommasi-Bailly) has been notified that we are in the finals. Mike Tommasi France
Hi Mike, Congrats! Are you doing that as a private team? (without a company background?) Now we know at least about 4 groups. http://littleboxchallenge.indicesemi.com/ joined the challenge, but I can't see an update for final participation. Do you think their box by 25.6"³ / 255 cm³ is already too large? @Ian Cash: Do you have a LBC team?
Thx yes we are a private in itiative. Call it "garage" ;-) 255cm3 is not bad. Fraunhofer announces 240cm3, but their pix show something that looks around 180...
Hi All, I'm a bit confused by the pictures of the Fraunhofer IZM entry. I don't see any orange control wires, and the ac wires don't seem to have the required "adequate strain relief" and do not appear to be the required awg at the point they enter the box (they appear to have spliced on smaller wires before entry into the box, which in my interpretation does not adhere to the rules, but as they've been selected as a finalist, what do I know?). Does anyone have any comments about these observations? @Mike, congratulations on reaching the final! I wonder if you'd mind letting us know how much time did you and your partner put in to this challenge? Did you both work on it full time? Or, did this project simply align closely with work you were already doing? I'm impressed that a two-man team makes it to the final!
Congratulations to all the finalists! (as well as the others) I took part to the challenge as a freelancer with friends during their free-time but we did not achieve such power densities (around 400cm3). More experience and time would have been welcome ;-) I am looking forward to reading the different technical approaches. Since we all struggled to death, it might be a fruitful database. Good luck. LEFEVRE. G (FraCa team/France)
Thx, we worked on it part time for a year. PS.. Anon, wish you would sign your name... ;-) FH IZM proto looks a lot smaller than the claimed 240 cm3. cheers Mike
ETH Zürich also in finals. These guys are really good. https://www.ee.ethz.ch/news-and-events/d-itet-news-channel/2015/09/power-electronic-systems-laboratory-in-the-finals-of-google-little-box-challenge.html Mike Tommasi
ETH worked together with Fraunhofer IZM, it's one entry. Not surpring that they came up with such an insanely small solution. I thought all along that they're the ones to beat; I can't wait to see if there's anything even smaller and to read all the technical approach documents. IZM clearly didn't appreciate my comments as they haven't responded and seem to have taken down their pictures!
Yes I noticed that the pix were gone. They are for sure the team to beat. Mike
Here's our little (box) announcement: http://www.tommasi.org/googlelittleboxchallenge.html Mike Tommasi
Found another finalist: http://tntoday.utk.edu/2015/09/28/engineering-team-finalist-googles-box-challenge/
Hi Mike, thanks for the updates. I count four two-person teams and three one-person (!) teams. Not many of the universities that received funding made it to the finals (I think only one out of ten - ETH Zurich); I'm surprised the University of Colorado Boulder didn't make it. I also don't see the indecisemi entry, and their webpage is gone - were they fibbing?
Correction - 2 out of ten universities. The UIUC team also had some Google funding.
Indicesemi does indeed have a device switching at up to 1MHz, and under 15.8 cubic inches. Unfortunately there are either 18 devices smaller, or Google didn't believe it. If anybody is in the Portland area, we are offering demonstrations to select people.
James wrote: > Indicesemi does indeed have a device switching at up to 1MHz, and > under 15.8 cubic inches. Unfortunately there are either 18 devices > smaller, or Google didn't believe it. > If anybody is in the Portland area, we are offering demonstrations to > select people. I'm sure your website claimed you were in the final. Why is the website gone? And why did the site only have renderings, not actual photos? Anyway, what you did is quite an achievement, even if it didn't make it to the final stage.
BTW, Future Energy Electronics Center is Virginia Tech, and Red Electrical Devils is company CE+T Power in Liège.
I assure you we never claimed to be accepted in the 18. We are focusing on developing our ZVS technology as a commercial product, hence the website. Best of luck to those in the top 18, particularly those smaller than 15 cubic inches, an impressive feat.
Of the 10 universities that got the Little Box Challenge Aacademic Awards grant of $30,000, only two are in the finals. http://googleresearch.blogspot.fr/2014/12/little-box-challenge-academic-awards.html
James wrote: > I assure you we never claimed to be accepted in the 18. > We are focusing on developing our ZVS technology as a commercial > product, hence the website. > Best of luck to those in the top 18, particularly those smaller than 15 > cubic inches, an impressive feat. My Apologies, clearly I'm misremembering. Surprised you didn't make it to the finals to be honest. Perhaps a terms & conditions thing or minor specifications thing that was overlooked?
So Mike, are you going to tell us the size of your converter, or do we have to wait until Google publish your technical approach document?
Anon wrote: > James wrote: >> I assure you we never claimed to be accepted in the 18. >> We are focusing on developing our ZVS technology as a commercial >> product, hence the website. >> Best of luck to those in the top 18, particularly those smaller than 15 >> cubic inches, an impressive feat. > > My Apologies, clearly I'm misremembering. Surprised you didn't make it > to the finals to be honest. Perhaps a terms & conditions thing or minor > specifications thing that was overlooked? Perhaps, though we were very thorough as I'm sure all were. Naturally we weren't given any explanation, other than being told that there would be no explanation. So long as the winner is smaller, $^!7 happens!
http://blog.cet-power.com/2015/09/08/google-finalist-littleboxchallenge/ http://nadagy.pcriot.com/ http://www.smps.com/Design/Prometheus/Prometheus.shtml http://www.cei.upm.es/blog/2015/09/25/google/ http://www.silicon-saxony.de/news/news-detail/archive/2015/september/article/little-box-challenge-die-olympiade-der-leistungselektroniker.html?tx_ttnews%5Bday%5D=10&cHash=4c5eb67c78ddbf567a4f0ad5efc4a1f4 http://www.aeri.unsw.edu.au/Google_inverter_competition http://www.agoria.be/nl/Luikse-kmo-CE-T-Power-finalist-voor-Little-Box-Challenge This is what I've found with googeling "little box challenge" and scanning the images
Hi altogether, everybody already recovered :-) ? As i asked some of you on the event: would you like to share your presentation (or even more)? The same Q to all the other >100 entrants. If you are interested: You may contact me by stefan.matlok<ÄT>iisb.fraunhofer de. Looking forward to your contacts, Stefan
Hi Stefan, Do you mind if you share the presentation with me. Thanks! George
my email email@example.com
George wrote: > Do you mind if you share the presentation with me. Hi George, i will discuss internally to release some more details or the presentation to public. ( Our PR did a (german) update: http://www.iisb.fraunhofer.de/en/press_events/press_releases/pressearchiv/archiv_2015/Google_Little_Box_Challenge_2015.html )
Thanks Stefan, very cool design. Don't forget let me know if you won 1M $. George
By checking the finalist, it seems there are hidden Champions ;-) OKE-Services seems to be a well known Micro-Converter professional, which was in the beginning of the micro-converter in the 1990 the standard solution of lot of installations ;-) We will see who wins the pott, but i am very surpriced by the actual power density ranking. from 1x 400w/inch³ down do 2x 300w/inch³ down to 2x 200w/inch³ and 5x 140w/inch³ and 4 below 100w/inch³ But the power density seems just a first step. to survice the 100h and pass the emc test will be also very challenging ;-) Already to the Deadline 3 of the 18 Finalist did not appear and should out of the race.
Hi J. K. Where did you get that power density ranking? Someone made a littlebox inverter only 5 in3???? How?
No one's reading this thread any more? Can anyone verify J.K.'s data? I'm disappointed Google haven't published any technical approach documents yet.
Hi everybody, perhaps you noticed the end of the Little Box Challenge. The "Red electrical Devils" from CE+T won the challenge. So congrats to them and their very good design and the best mix between size and reliability! Some boxes have been smaller (so as ours*), but the CE+T box has been more stable over the 100 hours testing. For all of you who are interested: The Finalists technical approaches are free to download on https://www.littleboxchallenge.com/ Best regards to all and all participants and looking forward to meet again on other upcoming power electronic events! Stefan *http://www.iisb.fraunhofer.de/en/press_media/press_releases/pressearchiv/archiv_2015/Google_Little_Box_Challenge_2015.html
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can anyone letme know where can I get complete list of participants of Little Box Challenge