How Wireless EV Charging Works

[bernardgreen]

Back onto the topic, an update on wireless charging methods

https://eepower.com/news/can-tesla-lead-the-pack-to-wireless-ev-charging/?

 

[ericmark]

That will remove the trip hazard of the charging lead, but can't see how it will speed up charging.

 

[Harry Bloomfield]

That will remove the trip hazard of the charging lead, but can't see how it will speed up charging.

Or how it can be sufficiently efficient, to make it worthwhile. The losses will be tremendous.

 

[ericmark]

Or how it can be sufficiently efficient, to make it worthwhile. The losses will be tremendous.

Will it also charge my watch, or in some cases phones?

 

[JohnW2]

Or how it can be sufficiently efficient, to make it worthwhile. The losses will be tremendous.

As I've said before (and attracted some flak , I don't think it's true 'efficiency' that you're talking about but, rather 'effectiveness'.

As I've said, inductive coupling can be useless as a means of effectively transferring electrical energy, but nevertheless n may be very 'efficient'.

 

[Harry Bloomfield]

As I've said before (and attracted some flak , I don't think it's true 'efficiency' that you're talking about but, rather 'effectiveness'.

No, I really meant 'losses', energy just wasted, heating the environment, the surroundings, and the vehicle chassis due to eddy currents.

 

[JohnW2]

No, I really meant 'losses', energy just wasted, heating the environment, the surroundings, and the vehicle chassis due to eddy currents.

As I keep saying, there are not necessarily any major 'losses' (wasted energy) - which, if present, would represent true 'efficiency problems'.

However a system of inductive coupling can be very ineffective (very little energy transferred, hence very 'slow') without there being appreciable 'losses' (i.e. 'poor efficiency'). In the real world, there will obviously always be some actual losses (hence less than 100%efficiency),but not necessarily very much.