Abstract: The invention relates to a control device for an inverter which includes three half-bridges each having a first power switching element connected to a first DC voltage potential and a second power switching element connected to a second DC voltage potential. The control device is arranged for driving the power switching elements for converting a DC voltage present between the DC voltage potentials into a polyphase AC current in a normal operating mode and for transferring the inverter from the normal operating mode into a safe operating mode. The control device is further set up to alternately drive the power switching elements in the safe operating mode for switching single-phase active short circuits and for switching two-phase active short circuits.

Abstract: A power converter, includes a housing and a busbar arrangement, which is arranged inside the housing, wherein the power converter is designed to guide an alternating current along the busbar arrangement, the power converter also includes at least one planar flux-conducting element made of a magnetically highly permeable material, which is arranged between a wall of the housing and the busbar arrangement.

Abstract: A control device for an inverter has a DC voltage input and a power unit with three half-bridges each formed by two power switching elements, the control device being arranged to driving the power switching elements in a normal operating mode for converting a DC voltage applied to the DC voltage input into a polyphase AC current provided at an AC current output. The control device is adapted to evaluate a signal state of a signal indicating a disconnection of a DC voltage source from the DC voltage input and to control the power switching elements in dependence on a result of the evaluation for alternately adopting a first switching pattern causing DC braking and a second switching pattern causing freewheeling.

Abstract: The invention relates to a control device for an inverter which includes three half-bridges each having a first power switching element connected to a first DC voltage potential and a second power switching element connected to a second DC voltage potential. The control device is arranged for driving the power switching elements for converting a DC voltage present between the DC voltage potentials into a polyphase AC current in a normal operating mode and for transferring the inverter from the normal operating mode into a safe operating mode. The control device is further set up to alternately drive the power switching elements in the safe operating mode for switching single-phase active short circuits and for switching two-phase active short circuits.

Abstract: A control device (2) for an inverter (1) which has a DC voltage input (3) and a power unit (5) with three half-bridges (11u, 11v, 11w) each formed by two power switching elements (13u, 13v, 13w, 15u, 15v, 15w), the control device (2) being arranged to driving the power switching elements (13u, 13v, 13w, 15u, 15v, 15w) in a normal operating mode for converting a DC voltage applied to the DC voltage input (3) into a polyphase AC current provided at an AC current output (4), wherein the control means (2) is adapted to evaluate a signal state of a signal (21) indicating a disconnection of a DC voltage source (9) from the DC voltage input (3) and to control the power switching elements (13u, 13v, 13w, 15u, 15v, 15w) in dependence on a result of the evaluation for alternately adopting a first switching pattern causing DC braking and a second switching pattern causing freewheeling.

Abstract: An electrical device includes a housing including a receiving space in which electrical components of the device are arranged, a cover device including a first cover element and a second cover element, and a sensor unit including a magnetic element and a magnetic sensor, which is configured to provide a detection signal when the magnetic element is detected to be absent. The first cover element has a cut-out, and the second cover element is arranged such that the second cover element, in a first position, covers the cut-out and, in a second position, allows access to the cut-out. The cover device is arranged such that the cover device, in a first position, closes the receiving space when the second cover element is in the first position, and in a second position, allows access to the first sub-receiving space and the second sub-receiving space.

Abstract: A power converter, includes a housing and a busbar arrangement, which is arranged inside the housing, wherein the power converter is designed to guide an alternating current along the busbar arrangement, the power converter also includes at least one planar flux-conducting element made of a magnetically highly permeable material, which is arranged between a wall of the housing and the busbar arrangement.

Abstract: An apparatus for detecting a magnetically conductive object in a detection area has an electrical coil and at least one sensor element. The apparatus is intended to be as free of degradation processes as possible and thus requires little maintenance and is configured and set up with the highest possible degree of redundancy and measurement reliability. For this purpose, the coil is set up to form a magnetic field in the detection area and the sensor element is configured to detect a magnetic field with a field strength, the magnitude of which is greater than a predefined threshold value. The threshold value is set to be higher than the field strength present in the detection area when the magnetically conductive object is absent and lower than the field strength present therein when the object is present.

Abstract: A position measuring system detects an extreme position of a guide rod which extends along a path that is rectilinear relative to a guide system and can be moved along the rectilinear path, wherein the system operates reliably, and requires a minimum of electrical lines. The position measuring system is equipped with a plurality of sensor elements and a magnetic element, wherein the magnetic element is configured to form a magnetic field. The magnetic element is connected to the guide rod. Each sensor element is configured to detect a magnetic field within a detection region, a field strength of the magnetic field being greater at the location of the sensor element than a predefined threshold value. At least one sensor element is connected to the guide system and is arranged in an environment of the path. A corresponding measuring method uses the position measuring system to detect the extreme positions.

Abstract: An apparatus for detecting a magnetically conductive object in a detection area has an electrical coil and at least one sensor element. The apparatus is intended to be as free of degradation processes as possible and thus requires little maintenance and is configured and set up with the highest possible degree of redundancy and measurement reliability. For this purpose, the coil is set up to form a magnetic field in the detection area and the sensor element is configured to detect a magnetic field with a field strength, the magnitude of which is greater than a predefined threshold value. The threshold value is set to be higher than the field strength present in the detection area when the magnetically conductive object is absent and lower than the field strength present therein when the object is present.

Abstract: A position measuring system detects an extreme position of a guide rod which extends along a path that is rectilinear relative to a guide system and can be moved along the rectilinear path, wherein the system operates reliably, and requires a minimum of electrical lines. The position measuring system is equipped with a plurality of sensor elements and a magnetic element, wherein the magnetic element is configured to form a magnetic field. The magnetic element is connected to the guide rod. Each sensor element is configured to detect a magnetic field within a detection region, a field strength of the magnetic field being greater at the location of the sensor element than a predefined threshold value. At least one sensor element is connected to the guide system and is arranged in an environment of the path. A corresponding measuring method uses the position measuring system to detect the extreme positions.