Model of Radio Managing System for EVs’ Accumulators Wireless Feeding

Model of Radio Managing System for EVs’ Accumulators Wireless Feeding

This is about the research done by our group of engineers in State Engineering University of Armenia.

The radio managing system of feeding process of accumulators of EVs provides both moving and stationary objects' accumulators feeding efficiency (on-the-road). The model of wireless feeding process by using LabVIEW program package gave an opportunity to provide high efficiency and dynamic regime of feeding process. The model provides the opportunity to control all parts of system as well as multibeam antenna array, enabling the tracing ability. Also, the model which has an opportunity of alignment antennas radiation pattern (RP) will allow minimization of feeding losses.

Timo | 15 janvier 2014

Lot of words, but not much said. Care to elaborate your point?

antenna | 15 janvier 2014

About a principle of how you can organize recharging for EV during its movement...

antenna | 15 janvier 2014

This post is a sort of collaboration suggestion to Tesla Engineers.

Timo | 15 janvier 2014

OK. As a nerd I'm curious to hear a bit more about that system. For example: it takes a lot of power to charge EV while in motion, how you are managing the inevitable transfer losses and how big those losses are in different scenarios?

antenna | 15 janvier 2014

Thank you for the question, Timo.
Each electro car needs to be recharged periodically, and even if you do it home or in public charge stations it means time loss during recharge, You need special equipment for recharging and recharging stations cost lot of money.
As you understood, the idea is that electro car should be recharged automatically while its moving using wireless technology. It’s about non-stop recharging.
The key point of proposed technology is that the electro car battery will be charged by the roadside small antennas, transmitting microwave radiation. One antenna will cover 2800 square meters of territory and it’s no need to cover all road along with antennas. Antennas could be installed on roadside, so no need for reconstruction or damaging of existing infrastructure. We are in the early stage of research now. But I can say definitely that having inevitable transfer losses in this wireless scheme is better than recharging stations disadvantages: Recharging requires significant time; Expensive recharging stations construction necessity; Problem of running out of charge, being far from charging stations; Necessity to visit recharging stations periodically arise certain inconvenience for drivers.

Brian H | 15 janvier 2014

Who funds the power?

DTsea | 15 janvier 2014

I can just hear the people who are afraid of cell phones and power lines reaction to this idea....

Timo | 16 janvier 2014

@DTsea, not necessarily unwarranted reaction. In order to charge full size EV while in motion the radiation would need to be tens of thousands times stronger than any cellphone communication. I'm not at all sure that that strong EM radiation would be safe.

antenna | 16 janvier 2014

Don't worry..Nobody is going to burn mankind via microwave power lines.... Tell me please how much power we need for charge the EV?
I mean for 100 km distance driving..

LMB | 16 janvier 2014

(LMB spouse)

100 km requires 20-25 kW-hr or equivalently about 70 to 90 megajoules.

antenna | 16 janvier 2014

Thank you and respect.

It means, that this heavy car can be charged with 7W each sec permanently.

LMB | 16 janvier 2014

(LMB spouse)

Assume 72 megajoules per 100 km at 100 kph. Then charge rate is 72 megajoules per hour equals 72000000/3600 = 20000 joules per sec = 20 kW-sec per sec = 20 kilowatts, not 7 watts.

Another way to think about this is that the car consumes about 20 kilowatts at 100 kilometers per hour, as indicated on the driver's display. Tn other words, the car must be fed 20 kilowatts of power to prevent discharging the battery.

antenna | 17 janvier 2014

Strange.. When I calculated for 25 KW/h it got 0.00694 KW= app. 7W per sec. Agree with you, it is not for start move, because not enough pulse motion moment. This way of feeding can prevent a battery from recharging on the road only. Finally, we can move to THz range antenna-rectenna-invertor.

Timo | 17 janvier 2014

25kWh not 25kW/h. That's unit of energy. At 100km/h car uses 25kWh in a hour, which means it requires 25kW constant power to keep going. IOW 25kW of power generates approx 7Wh/s. You just messed up units, calc itself is correct.

antenna | 18 janvier 2014

Thank you, Timo, it is clear now. Will think, how we can solve that problem.

DTsea | 18 janvier 2014

@timo I agree actually. Microwave rectennas that could feed my car 20 kW WOULD be dangerous..... UNLIKE a cell phone or a high tension line,

joer293 | 20 janvier 2014

I've read the US and Russia military have the microwave power transmission equipment for rapid base deployments, but I thought it was temporary high power point to point only, are you suggesting a beam forming Mimo design incorporated into this existing tech?

antenna | 21 janvier 2014

something like that. It can be MIMO or other reconfigurable antenna design technics.