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

摘要

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.