For car park, and the receiving antenna can be placed in the car.
This enables the EV to be charged wirelessly just by being in
the parking box. To achieve this, the wireless power transfer
system must satisfy these three conditions: high efficiency,
large air gaps, and high power.
Presently, the most popular wireless power transfer
technologies are the electromagnetic induction, and the
microwave power transfer. However, the electromagnetic
induction has a short range[5], and microwave power transfer
has a low efficiency as it uses radiation. Recently, a highly
efficient mid-range wireless power transfer technology using
electromagnetic resonance coupling, WiTricity, was proposed.
It satisfies all three conditions to make wirelessly charging
EVs possible as it has a high efficiency at mid range
(approximately 90% at 1m and 50% at 2m [1] at 60W).
Until now, this phenomenon was explained using the Mode
Coupling theory. However, this theory is often complicated,
and inconvenient when it comes to designing the circuits
around the system
For car park, and the receiving antenna can be placed in the car.
This enables the EV to be charged wirelessly just by being in
the parking box. To achieve this, the wireless power transfer
system must satisfy these three conditions: high efficiency,
large air gaps, and high power.
Presently, the most popular wireless power transfer
technologies are the electromagnetic induction, and the
microwave power transfer. However, the electromagnetic
induction has a short range[5], and microwave power transfer
has a low efficiency as it uses radiation. Recently, a highly
efficient mid-range wireless power transfer technology using
electromagnetic resonance coupling, WiTricity, was proposed.
It satisfies all three conditions to make wirelessly charging
EVs possible as it has a high efficiency at mid range
(approximately 90% at 1m and 50% at 2m [1] at 60W).
Until now, this phenomenon was explained using the Mode
Coupling theory. However, this theory is often complicated,
and inconvenient when it comes to designing the circuits
around the system
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