Cor van de Water via EV wrote:
I doubt that the two achievements coincide... they probably were able to push 22kW across an inductive link (at much greater loss than the claimed 2.6%) and the claimed efficiency is only for the inductive power transmission, and does not take into account any electronics or conversion losses on the two ends... It is a research lab result, not a practical application result.
You are probably correct. The reporter or press release writer was just cherry-picking the best sounding numbers for the story.
Please note that there are plenty real-life EV-charging wireless stations in daily use!
I agree. *Millions* of them! Quite a number of wireless charging systems have been in commercial use for many decades. Everything from Braun cordless toothbrushes to Inductran industrial vehicle chargers.
NOTE that even conductive charging can have several percent of loss.
Yes indeed. The large majority of battery chargers have efficiencies in the 70-90% range. That is in fact "good enough* to satisfy most customers. They are more likely to buy based on price than on efficiency.
-- Heat is the "bullshit detector" of efficiency claims. -- Jeff Shanab -- Lee Hart's EV projects are at http://www.sunrise-ev.com/LeesEVs.htm _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
