https://www.mit.edu/~soljacic/wireless-power_AoP.pdf

Efficient wireless non-radiative mid-range energy transfer

Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.

Wireless energy transfer

The electromagnetic energy transfer device includes a first resonator structure receiving energy from an external power supply. The first resonator structure has a first Q-factor. A second resonator structure is positioned distal from the first resonator structure, and supplies useful working power to an external load. The second resonator structure has a second Q-factor. The distance between the two resonators can be larger than the characteristic size of each resonator. Non-radiative energy transfer between the first resonator structure and the second resonator structure is mediated through coupling of their resonant-field evanescent tails.

Wireless non-radiative energy transfer

Described herein are improved capabilities for a source resonator having a Q-factor Q 1 >100 and a characteristic size x 1 coupled to an energy source, and a second resonator having a Q-factor Q 2 >100 and a characteristic size x 2 coupled to an energy drain located a distance D from the source resonator, where the source resonator and the second resonator are coupled to exchange energy wirelessly among the source resonator and the second resonator.

Wireless energy transfer systems

Described herein are improved configurations for a wireless power converter that includes at least one receiving magnetic resonator configured to capture electrical energy received wirelessly through a first oscillating magnetic field characterized by a first plurality of parameters, and at least one transferring magnetic resonator configured to generate a second oscillating magnetic field characterized by a second plurality of parameters different from the first plurality of parameters, wherein the electrical energy from the at least one receiving magnetic resonator is used to energize the at least one transferring magnetic resonator to generate the second oscillating magnetic field.

Wireless energy transfer converters

A configuration for supplying a large number of actuators with electrical power without using wires includes at least one primary winding that is fed from a medium-frequency oscillator. Each actuator has at least one secondary winding that is suitable for drawing power from a medium-frequency magnetic field.

System for wirelessly supplying a large number of actuators of a machine with electrical power

A configuration for producing electrical power from a magnetic field includes a three-dimensional winding configuration formed from a central core of a magnetic material on which at least three windings are fitted. The windings have winding axes each disposed at right angles to one another and intersecting at a common point. Each of the windings is connected to a rectifier. Each of the windings is, preferably, connected to a resonant capacitor to form a resonant circuit.

Configuration for producing electrical power from a magnetic field

A system for a machine, in particular an automated production machine, has a large number of proximity sensors. Each proximity sensor has at least one secondary winding that is suitable for drawing power from a medium-frequency magnetic field. At least one primary winding, which is fed from a medium-frequency oscillator, is provided for supplying the proximity sensors with electrical power without using wires. Each proximity sensor is equipped with a transmitting device that emits radio signals, which contain sensor information of interest, to a central receiving device that is connected to a process computer for the machine. A proximity sensor and a primary winding for this purpose are also proposed.

System for a machine having a large number of proximity sensors, as well as a proximity sensor, and a primary winding for this purpose

The method involves transmitting a medium frequency magnetic field from at least one primary winding (1) to at least one secondary winding (2.1 to 2.s) in each actuator (3.1 to 3.s) sensor, for conversion into electrical energy. The primary winding is supplied with electrical energy by a medium frequency oscillator (4). The secondary windings (2.1 to 2.s) may be enclosed by a single primary winding. Alternatively, at least two primary windings may be arranged parallel to each other, with the secondary windings of the actuators arranged between them. Independent claims are included for an apparatus for wireless supply of power to actuators, an actuator and a system for a manufacturing machine.

Wireless supply of electrical power to actuators by converting medium frequency magnetic field received by secondary windings in each actuator

The arrangement has a three-dimensional winding arrangement formed from a central core (1-3) of magnetically active material on which at least three windings (4-9) are mounted with mutually perpendicular axes intersecting at a common point. The core can be cubic or spherical with grooves for accommodating the windings.

Arrangement for generating electrical energy from magnetic field has winding arrangement with central magnetically active core, three or more windings with orthogonal intersecting axes

Kai Garrels

Papers

System for wirelessly supplying a large number of actuators of a machine with electrical power

Configuration for producing electrical power from a magnetic field

System for a machine having a large number of proximity sensors, as well as a proximity sensor, and a primary winding for this purpose

Wireless supply of electrical power to actuators by converting medium frequency magnetic field received by secondary windings in each actuator

Arrangement for generating electrical energy from magnetic field has winding arrangement with central magnetically active core, three or more windings with orthogonal intersecting axes