300kW 3-phase Wireless DOE ORNL EVSE> 80%SOC:20mins

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300kW 3-phase Wireless DOE ORNL EVSE> 80%SOC:20mins

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https://scitechdaily.com/new-wireless-charging-designs-for-electric-vehicles-double-power-density/
New Wireless Charging Designs for Electric Vehicles Double Power Density
November 5, 2019  DOE/Oak Ridge National Laboratory

[image  
https://scitechdaily.com/images/New-Wireless-Charging-Coil-Designs.gif
New wireless charging coil designs, created and tested by Oak Ridge National
Laboratory, include a three-phase system that features rotating magnetic
fields between layers of coils. The layered coils transfer power in a more
uniform way, allowing for an increase in power density. Credit: Jason
Pries/Oak Ridge National Laboratory, U.S. Dept. of Energy
]

Oak Ridge National Laboratory researchers created and tested new wireless
charging designs that may double the power density, resulting in a lighter
weight system compared with existing technologies, while maintaining safety.

The hands-free method includes a set of two charging coils—one to be affixed
underneath an electric vehicle and the other at ground level. When the coils
are aligned, the power transferred charges the vehicle’s battery. The team’s
designs, described in a recent study, include a three-phase system that
features rotating magnetic fields between layers of coils.

“The layered coil design transfers power in a more uniform way, allowing for
an increase in power density,” ORNL’s Jason Pries said. The three-phase
system has successfully transferred 50 kilowatts with 95% efficiency. “As we
scale up the system to transfer up to 300 kilowatts, the specific power is
expected to improve as well.” This research brings the team another step
closer to fully charging an EV in 20 minutes.
[© scitechdaily.com]
...
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 search on  300kW 3-phase Wireless DOE ORNL charging


+ (MN utility allete.com donating 10 EVSE to install @business customers'
sites)
Minnesota Power to donate 10 electric vehicle charging stations
2019-10-26 ... company is purchasing 20 electric vehicle (EV) charging
stations that it will donate to business customers for installation at their
site, along with up to $1,500 ...




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