Abstract:
An apparatus (300) for supplying power to a load in a capacitive power transfer system comprises a power generator (350) operating at a first frequency; a transmitter comprising a plurality of first electrodes (310) connected to a first terminal of the power generator (350)and a plurality of second electrodes (320) connected to a second terminal of the power generator (350) of a transmitter portion of the apparatus (300); and a plurality of inductors (340), wherein each inductor of the plurality of inductors is connected between a pair of a first electrode and a second electrode of the plurality of first and second electrodes, wherein each inductor comprises,together with a parasitic capacitor (330) formed between each pair of the first electrode and the second electrode,a resonant circuit at the first frequency in order to compensate for current loss due to parasitic capacitances.
Abstract:
A transparent capacitive powering system (200) is disclosed. The system comprises a pair of receiver electrodes (241, 242) connected to a load (250) through an inductor (260), wherein the inductor is coupled to the load to resonate the system; and a transparent infrastructure (220) having at least a first layer (130) of a non-conductive transparent material and a second layer (120) of a conductive transparent material coupled to each other, wherein the second layer is arranged to form a pair of transmitter electrodes (221, 222), wherein the pair of receiver electrodes are decoupled from the second layer, thereby forming a capacitive impedance between the pair of transmitter electrodes and the pair of receiver electrodes, wherein a power signal generated by a driver (210) is wirelessly transferred from the pair of transmitter electrodes to the pair of receiver electrodes to power the load when a frequency of the power signal substantially matches a series-resonance frequency of the first inductor and the capacitive impedance.
Abstract:
An electronic device (10,40) which is inductively powered or charged has a receiver coil (12) on which a metal object (24,42) can be placed without causing deterioration of the coil's magnetic field and without generating heat in the metal object. An ultra-thin, flexible, high magnetic permeability metal foil (14) having a thickness of 50 µm or less is provided as a shielding layer between the coil and the object. Radial slits (22) are provided in the shielding layer, which suppress unwanted eddy currents in the layer to reduce power transfer losses and heat generation.
Abstract:
A Wireless power transmission system comprises a base unit (1) with multiple magnetic field generator circuits and a device (10), separable from said base unit (1) having a receiving inductor, adapted to receive power inductively when said device (10) is in proximity to one of said generator circuits, wherein said base unit (1) comprises a controller (3), configured to determine a transmission circuit (2') from said generator circuits when said receiving inductor is in proximity to said transmission circuit (2'), whereupon said transmission circuit (2') is operated to generate a first magnetic field (8), having a first phase, to induce a current in said receiving inductor and at least one of the remaining generator circuits is operated as a compensation circuit (2", 52, 82) to generate a second magnetic field (21), having an opposite phase to said first phase.
Abstract:
The invention relates to a floor covering (100) comprising: a plurality of coils (110), each coil (110) being operable to supply inductive energy to a power receiver circuit (200); wherein the plurality of coils comprises a transmitter area occupying the largest area of the floor covering (100); and a charging current through the coils is operable to generate said inductive energy.
Abstract:
Power converter for receiving an input current at an input voltage and for providing an output current at an output voltage. The power converter comprises a transformer (133) having a primary (136) and at least one secondary (138) side, wherein the transformer shows a mutual inductivity L s . The power converter further comprises at least one switching device (124a, 124b) being operated at an operating frequency f
Abstract:
An electronic device (1) is provided with at least a base part (2, 22, 32, 42) and an electronic module (3). The base part (2, 22, 32, 42) comprises a soft magnetic layer (5, 25, 35, 45) and at least a primary coil (7). The electronic module (3) comprises at least one electronic element and at least a secondary coil (8) adapted to inductively interact with the primary coil (7). The primary coil (7) is located in a hole (6) of the soft magnetic layer (5, 25, 35, 45). The electronic module (3) further comprises at least one magnet (9) adapted to magnetically interact with the soft magnetic layer (5, 25, 35, 45).
Abstract:
A capacitive contactless powering system (100) comprises a pair of receiver electrodes (141, 142) connected to a load (150) through a first inductor (160), wherein the first inductor is coupled to the load to resonate the system; a pair of transmitter electrodes (121, 122) connected to a driver (110); an insulating layer (130) having a first side and a second side opposite each other, wherein the pair of transmitter electrodes are coupled to the first side of the insulating layer and the pair of receiver electrodes are decoupled from the second side of the insulating layer, such that a capacitive impedance is formed between the pair of transmitter electrodes and the pair of receiver electrodes, wherein a power signal generated by the driver is wirelessly transferred from the pair of transmitter electrodes to the pair of receiver electrodes to power the load when a frequency of the power signal matches a series-resonance frequency of the first inductor and the capacitive impedance.
Abstract:
The invention relates to a gas-tight electroluminescent device (100) with an electroluminescent part (104) and a sealing part (102). The electroluminescent part comprises an electroluminescent layer (114), a first electrode layer (112), and a second electrode layer (116). The sealing part comprises a substrate (106), a cover plate (110) for gas-tight sealing the electroluminescent device, and at least one receiver winding (105; 206; 208; 406) for receiving electromagnetic radiation.
Abstract:
A modular power transmitting system comprises multiple transmitter modules being connected together for transmitting power inductively to a receiver. The transmitter module is connected with other transmitter modules for transmitting power inductively to the receiver, wherein the transmitter module (40) comprises at least one transmitter cell (30), each transmitter cell having one transmitter coil (33) by which the transmitter cell transmitting power to the receiver, the transmitter module having an outer periphery (45) being shaped so as to fit to neighboring transmitter modules for forming an power transmitting surface, the at least one transmitter cell being arranged such that the power transmitting surface is constituted by an uninterrupted pattern of adjacent transmitter coils extending in said surface, and interconnection units (110,111) for connecting with neighboring transmitter modules for sharing a power supply.