Google Offers a Million Bucks For a Better Inverter

pugslyyy

Expedition Vehicle Engineer Guy
This could have a huge impact for overlanders, will be great to see the innovation pushed forward by this.


http://hardware.slashdot.org/story/14/07/22/2032241/google-offers-a-million-bucks-for-a-better-inverter

With the Little Box Challenge, Google (and IEEE, and a few other sponsors like Cree and Rohm) is offering a $1 million prize to the team which can "design and build a kW-scale power inverter with the highest power density (at least 50 Watts per cubic inch)." Going from cooler-sized to tablet sized, they say, would make whole lot of things better, and the prize is reserved for the best performing entrant. "Our testing philosophy is to not look inside the box. You provide us with a box that has 5 wires coming out of it: two DC inputs, two AC outputs and grounding connection and we only monitor what goes into and comes out of those wires, along with the temperature of the outside of your box, over the course of 100 hours of testing. The inverter will be operating in an islanded more—that is, not tied or synced to an external grid. The loads will be dynamically changing throughout the course of the testing, similar to what you may expect to see in a residential setting." The application must be filled out in English, but any serious applicants can sign up "regardless of approach suggested or team background." Registration runs through September.
 

Haf-E

Expedition Leader
The specs required for this competition is for an inverter with a DC input of 450VDC and a 240VAC output - so I doubt it will really do much that is applicable to overland vehicles in the near term. Seems like the goal is more for alternative energy applications that do not use batteries - or conventional batteries at least.

The judging criteria is purely power density - most power in as small of a package as possible - which is not always the most important criteria - For example, I prefer inverters which include low frequency transformers which are heavy but protect the more delicate electronics when unexpected things happen. Many of the lighter weight high frequency inverters can be damaged by things such as incorrect wiring and ground faults etc.
 

pugslyyy

Expedition Vehicle Engineer Guy
The specs required for this competition is for an inverter with a DC input of 450VDC and a 240VAC output - so I doubt it will really do much that is applicable to overland vehicles in the near term. Seems like the goal is more for alternative energy applications that do not use batteries - or conventional batteries at least.

The judging criteria is purely power density - most power in as small of a package as possible - which is not always the most important criteria - For example, I prefer inverters which include low frequency transformers which are heavy but protect the more delicate electronics when unexpected things happen. Many of the lighter weight high frequency inverters can be damaged by things such as incorrect wiring and ground faults etc.

I have one of those as well - but innovation comes by looking forward, not backward. I remember when inverters were electro-mechanical!
 

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