Abb Research Ltd.

Abb Patent Gmbh

Bernd Smailus

Guntram Scheible

Lothar Heinemann

Kai Garrels

Martin Klaus

Rolf Paschen

Gerd Fitterer

Helmut Boehme

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

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

An overhead line for electrical energy transmission includes at least one phase conductor which receives a phase current which has a phase and an amplitude. A compensation loop surrounds the at least one phase conductor. A compensation current which has a phase and an amplitude is fed into the compensation loop by a driving voltage. The phase and the amplitude of the compensation current is set with respect to the phase and the amplitude of the phase current flowing in the at least one phase conductor such that a magnetic flux produced by the compensation current counteracts a magnetic flux produced by the phase current. At least one additional loop surrounds the at least one phase conductor connected to the compensation loop. The driving voltage for the compensation current is produced in the compensation loop and in the at least one additional loop. The compensation loop and the at least one additional loop define the at least one phase conductor into at least two main sections. The compensation loop defines a first main section of the at least two main sections and the at least one additional loop defines at least one second section of the at least two main sections.

Overhead line for electric energy transmission

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Hemsbach, Germany

Bernd Smailus