Abstract: An axial flux machine, in particular a single-sided axial flux motor, for an electrical machining device, includes a machine shaft, in particular a motor shaft, a disc-shaped stator, and a disc-shaped rotor which is arranged adjacent to the stator in the axial direction of the machine shaft. The stator is formed as a winding carrier for at least one stator winding and the rotor, which is connected to the machine shaft in a rotationally fixed manner, can rotationally moved relative to the stator. The axial flux machine further includes a housing for receiving the stator and the rotor. The housing is cylindrical, open on one side and formed with a substantially closed end face, and the housing fixes the stator in such a way that a defined air gap remains between the rotor and the stator. The axial flux machine can be arranged in an electrical processing device.

Abstract: An axial flux machine, in particular a single-sided axial flux motor, for an electrical machining device includes a machine shaft, in particular a motor shaft, a disc-shaped stator, and a disc-shaped rotor which is adjacent to the stator in the axial direction of the machine shaft. The stator is designed as a winding carrier for at least one stator winding and the rotor, which is connected fixedly in terms of rotation to the machine shaft, is capable of being set in a rotary movement relative to the stator. Additionally, the stator of the axial flux machine includes a combination of composite materials, in particular fiber-plastic composites, and soft magnetic iron. The axial flux machine can be arranged in an electrical processing device.

Abstract: In a method and an apparatus for detecting electrically conductive foreign bodies during inductive energy transmission between a primary coil (1) and a secondary coil (2), at least one sensor coil (5) is arranged between the primary coil (1) and the secondary coil (2), and a current flowing in the sensor coil (5) due to the induced voltage during the energy transmission is detected and evaluated. In this case, the sensor coil (5) is connected to at least one capacitor to form a resonant circuit which is matched to the excitation frequency of the primary coil (1). The phase position of the current in the resonant circuit in relation to a reference signal is then used to determine whether there are electrically conductive foreign bodies (4) between the primary coil (1) and the secondary coil (2). A high degree of sensitivity, also in relation to small electrically conductive foreign bodies within the energy transmission path, is achieved by means of the method and the apparatus.

Abstract: The present invention relates to a method for increasing the efficiency of an energy transfer device (100) with which electrical energy is converted contactlessly into electrical energy with the aid of a magnetic field in order to electrically excite a rotor of an electrical machine, comprising the step of: arranging an additional electrically conductive material layer (13) on at least one active part (12, 19, 35, 45) of the energy transfer device (100), wherein an active part of the energy transfer device (100) is a part of the energy transfer device (100) which is at least partially exposed to the magnetic field used for energy transfer, and wherein the electrical conductivity of the additional material layer (13) is greater than the electrical conductivity of the at least one active part (12, 19, 35, 45). Moreover, the invention relates to an energy transfer device (100) and to a use of an electrically conductive material.

Abstract: An axial flux machine, in particular a single-sided axial flux motor, for an electrical machining device, includes a machine shaft, in particular a motor shaft, a disc-shaped stator, and a disc-shaped rotor which is arranged adjacent to the stator in the axial direction of the machine shaft. The stator is formed as a winding carrier with a plurality of stator teeth for at least one stator winding and the rotor, which is connected to the machine shaft in a rotationally fixed manner, can be set in a rotational movement relative to the stator. The rotor of the axial flux machine has a rotor yoke configured as a bidirectional fan or which is permanently connected to a bidirectional fan by a joining process, the bidirectional fan having at least one radial and one axial air flow direction for cooling the axial flux machine, in particular the stator and the rotor.

Abstract: A device for inductively transferring electrical energy and/or data from a primary-sided carrier to at least one secondary-sided recipient which can be positioned on the carrier has a meander-shaped winding on the primary side and at least one meander-shaped winding on the secondary side.

Abstract: The invention relates to a device for the contactless transfer of electric power to a load arranged on a rotor 20 of an electric machine and for detecting the angular position of the rotor 20. The device comprises an inductive power transfer path for the inductive transfer of electric power to the electrical load and a resolver for detecting an angular position of the rotor 20, wherein the inductive power transfer path and the resolver use one magnetic circuit. The invention furthermore relates to a corresponding method and to a corresponding electric machine.

Abstract: The invention relates to an arrangement for an electrically excited machine (100), comprising: a machine rotor (10); and an exciter device (30) for the electrical excitation of the machine (100), wherein the exciter device (30) comprises at least one energy transfer system (20) integrated in the machine rotor (10). Moreover, the invention relates to an electrically excited machine (100) comprising a machine stator (40) and an arrangement according to the invention.

Abstract: The present invention relates to a circuit arrangement having an active rectifier circuit, in particular on a secondary side of an inductive energy transmission path. The circuit arrangement has a half or full bridge of power transistors for rectifying an AC voltage induced in an input inductor of the circuit arrangement. The power transistors are connected to the input inductor in such a way that an auxiliary voltage is split off from the induced AC voltage for switching the power transistors. As a result, even large currents, which result in a low output voltage, can be transmitted without endangering the operation of the rectifier circuit.

Abstract: In a method and an apparatus for detecting electrically conductive foreign bodies during inductive energy transmission between a primary coil (1) and a secondary coil (2), at least one sensor coil (5) is arranged between the primary coil (1) and the secondary coil (2), and a current flowing in the sensor coil (5) due to the induced voltage during the energy transmission is detected and evaluated. In this case, the sensor coil (5) is connected to at least one capacitor to form a resonant circuit which is matched to the excitation frequency of the primary coil (1). The phase position of the current in the resonant circuit in relation to a reference signal is then used to determine whether there are electrically conductive foreign bodies (4) between the primary coil (1) and the secondary coil (2). A high degree of sensitivity, also in relation to small electrically conductive foreign bodies within the energy transmission path, is achieved by means of the method and the apparatus.

Abstract: The present invention relates to a method for increasing the efficiency of an energy transfer device (100) with which electrical energy is converted contactlessly into electrical energy with the aid of a magnetic field in order to electrically excite a rotor of an electrical machine, comprising the step of: arranging an additional electrically conductive material layer (13) on at least one active part (12, 19, 35, 45) of the energy transfer device (100), wherein an active part of the energy transfer device (100) is a part of the energy transfer device (100) which is at least partially exposed to the magnetic field used for energy transfer, and wherein the electrical conductivity of the additional material layer (13) is greater than the electrical conductivity of the at least one active part (12, 19, 35, 45). Moreover, the invention relates to an energy transfer device (100) and to a use of an electrically conductive material.

Abstract: A circuit for inductively transferring electrical energy from a primary side to a secondary side has a primary-sided autoresonant power oscillator compensated in parallel having a primary inductivity and serially compensated secondary sides each having a secondary inductivity.

Abstract: A device for inductively transferring electrical energy and/or data from a primary-sided carrier to at least one positionable secondary-sided recipient includes at least one primary-sided coil arrangement, which inductively interacts with at least one secondary-sided coil arrangement. Meander-shaped windings of a predeterminable winding number of the primary-sided and/or secondary-sided coil arrangement are arranged on at least one flexible carrier by embroidering a high frequency strand, and the meander-shaped windings have straight courses in the region of crossovers of the embroidered high frequency strands.

Abstract: A device for inductively transferring electrical energy and/or data from a primary-sided carrier to at least one secondary-sided recipient which can be positioned on the carrier has a meander-shaped winding on the primary side and at least one meander-shaped winding on the secondary side.

Abstract: A circuit for inductively transferring electrical energy from a primary side to a secondary side has a primary-sided autoresonant power oscillator compensated in parallel having a primary inductivity and serially compensated secondary sides each having a secondary inductivity.

Abstract: A device for inductively transferring electrical energy and/or data from a primary-sided carrier to at least one positionable secondary-sided recipient includes at least one primary-sided coil arrangement, which inductively interacts with at least one secondary-sided coil arrangement. Meander-shaped windings of a predeterminable winding number of the primary-sided and/or secondary-sided coil arrangement are arranged on at least one flexible carrier by embroidering a high frequency strand, and the meander-shaped windings have straight courses in the region of crossovers of the embroidered high frequency strands.