4 ms·
They claim it's 10% total loss, not 30%. And yes, it's got a cost, but depending on how things shake out, it might not be much more if any. Cables are the best
by chipsa 4y ago
They claim it's 10% total loss, not 30%. And yes, it's got a cost, but depending on how things shake out, it might not be much more if any. Cables are the best way to move charge, assuming you don't have to worry about the cables. But once you factor in damage from vandalism or theft or just accidents, how hefty the cables actually are, etc, compared to having the cable buried nice and safe.
As for the difference in power loss between qi and this? Part of it is scale : they can fit a much larger diameter pad compared to a phone, which gets them much better coupling. You're essentially talking about an air core transformer, and there's plenty of transformers in the grid.
- adgjlsfhk1 4y agoI'll believe 10% when I see it. you can definitely get that in a lab, but once you bury it under asphalt, and the driver parks 6 inches off center, does the efficiency still hold up? also, most cars are largely metal. how much energy do you lose from inducing current through the rest of the car?
- chipsa 4y agoThis includes have almost 10 inches between the plates, so including the asphalt. And probably will just not charge is you're really off center. Yes cars are mostly metal, but there's ways to focus the magnetic field so it doesn't go too far laterally. https://witricity.com/newsroom/blogs/what-is-efficiency-how-do-you-measure-it-and-why-should-you-care/ https://witricity.com/newsroom/blogs/what-is-efficiency-how-...