Wireless Power Transfer Coil Configuration

Mahoney gunbok lee2 and joshua r.

Wireless power transfer coil configuration. Other new additions include a high power coil we wpcc 760308101311 with 400 w output and a flat version two coils whose respective heights of 2 8 mm and 3 1 mm are only half as high as those of wireless power transfer coils combine charging function and nfc. Optimal coil size ratios for wireless power transfer applications benjamin h. The two coil transmitter is introduced as an extension to the converge area. Flux couples into the secondary coil which induces a voltage and current flows.

Therefore the maximum distance between two coils is about 20 mm. Since the power is transferred from the external coil to the implant coil only when the secondary battery needs charging the external coil connected with the base station is put on the skin or clothes only under charging. Research into bidirectional wireless power transfer from grid to. Waters 1 brody j.

Wireless power techniques mainly fall into two categories near field and far field. The aim is to transfer energy wirelessly from transmitter coil to receiver coil based on magnetic resonance. In near field or non radiative techniques power is transferred over short distances by magnetic fields using inductive coupling between coils of wire or by electric fields using capacitive coupling between metal electrodes. In contrast magnetic resonance based wireless power transfer transmits power as the system inserts a capacitor in power transmission and receiving sides to form lc resonance circuits and tunes both sides to resonate at the same resonance frequency.

Bhw2114 uw edu abstract optimization of coil sizes for wireless power transfer. For many near field wireless power systems such as the one specified by the wpc the behavior of the magnetic power transfer can be modeled by a simple transformer. A novel system with a two coil transmitter connected to a single power source is proposed here in a triplet configuration with a single receiving coil. Of ee and cse university of washington seattle wa 98195 usa 2dept.

Wireless power transfer relies on magnetic induction between planar receiver and transmitter coils. Of ee pohang university of science and technology pohang gyungbuk 790 784 korea email. Positioning the receiver coil over the transmitter coil causes magnetic coupling when the transmitter coil is driven. Create new designs for the coils that generate the magnetic field that wirelessly transfers power.