Abstract: A method for operating a controllable electrical device connected by a data link to a control device for controlling the electrical device, includes using the electrical device to exchange electrical power with a connected electrical grid and using an environmental sensor for collecting environmental information. The control device transmits control signals to the electrical device over the data link. The electrical device assumes a first or a second operating state depending on the control signals transmitted. The electrical device exchanges energy with the electrical grid in the first operating state and the electrical device does not exchange energy with the electrical grid in the second operating state. Environmental information collected by the environmental sensor is transmitted over the data link to the control device only when the electrical device is in the second operating state. An assembly for carrying out the method is also provided.

Abstract: A method for operating a controllable electrical device connected by a data link to a control device for controlling the electrical device, includes using the electrical device to exchange electrical power with a connected electrical grid and using an environmental sensor for collecting environmental information. The control device transmits control signals to the electrical device over the data link. The electrical device assumes a first or a second operating state depending on the control signals transmitted. The electrical device exchanges energy with the electrical grid in the first operating state and the electrical device does not exchange energy with the electrical grid in the second operating state. Environmental information collected by the environmental sensor is transmitted over the data link to the control device only when the electrical device is in the second operating state. An assembly for carrying out the method is also provided.

Abstract: A potential equalization system for a modular multi-level converter. The converter has a plurality of converter modules and each of the modules has a direct current source. The potential equalization system includes pole contacts, which are each electrically connected to one pole of a direct current source, and at least one electrically conductive contacting element, which can be moved between a first end position in which the contacting element is electrically isolated from the converter modules and a second end position in which the contacting element contacts pole contacts of different direct current sources and can be put on ground potential.

Abstract: A potential equalization system for a modular multi-level converter. The converter has a plurality of converter modules and each of the modules has a direct current source. The potential equalization system includes pole contacts, which are each electrically connected to one pole of a direct current source, and at least one electrically conductive contacting element, which can be moved between a first end position in which the contacting element is electrically isolated from the converter modules and a second end position in which the contacting element contacts pole contacts of different direct current sources and can be put on ground potential.

Abstract: An electronic module for protecting power semiconductor devices of an HVDC converter against high current surges and damaging electrical discharges includes a capacitor, a short circuit device, a movable portion, a short circuit portion and a spring element. The short circuit device is connected in parallel with the capacitor and has first and second busbars. The movable portion is connected to the first busbar and the short circuit portion is connected to the second busbar. The spring element is arranged between the movable portion and the short circuit portion. When a short circuit current flows through the first busbar, an electromagnetic force between the busbars causes the first busbar to repel the second busbar and move towards the short circuit portion. The latter provides a short circuit path connecting the first busbar to the second busbar short circuiting the capacitor and bypassing the power semiconductor devices of the HVDC converter.

Abstract: A supply device supplies electrical power to an electrical assembly at a high-voltage potential. The supply device has a series circuit composed of at least one series resistor and a supply unit. The series circuit can be connected to an energy store and the supply unit can be connected to the assembly that is to be supplied with power. The supply device further has a fuse element, by which a short-circuit current through the supply unit can be electrically interrupted in the event of a short circuit.

Abstract: An electronic module for protecting power semiconductor devices of an HVDC converter against high current surges and damaging electrical discharges includes a capacitor, a short circuit device, a movable portion, a short circuit portion and a spring element. The short circuit device is connected in parallel with the capacitor and has first and second busbars. The movable portion is connected to the first busbar and the short circuit portion is connected to the second busbar. The spring element is arranged between the movable portion and the short circuit portion. When a short circuit current flows through the first busbar, an electromagnetic force between the busbars causes the first busbar to repel the second busbar and move towards the short circuit portion. The latter provides a short circuit path connecting the first busbar to the second busbar short circuiting the capacitor and bypassing the power semiconductor devices of the HVDC converter.

Abstract: In a clearance compensating device for an internal combustion engine with an internal part movably arranged within a guide duct of an external part for adjusting a clearance of an associated valve of the internal combustion engine, a pressure chamber, and a storage chamber which is hydraulically connected to the pressure chamber for receiving hydraulic fluid are associated with the interior part. Between the two chambers a one-way valve is disposed for applying an actuating force to the interior part relative to the external part. A feeding device is hydraulically connected to a blocking chamber for supplying a hydraulic fluid to the blocking chamber in order to exert a blocking force to the internal part acting in a direction opposite the actuating force under the control of a timing device the blocking force being modified depending on a cycle of the timing devices.

Abstract: In a clearance compensating device for an internal combustion engine with an internal part movably arranged within a guide duct of an external part for adjusting a clearance of an associated valve of the internal combustion engine, a pressure chamber, and a storage chamber which is hydraulically connected to the pressure chamber for receiving hydraulic fluid are associated with the interior part. Between the two chambers a one-way valve is disposed for applying an actuating force to the interior part relative to the external part. A feeding device is hydraulically connected to a blocking chamber for supplying a hydraulic fluid to the blocking chamber in order to exert a blocking force to the internal part acting in a direction opposite the actuating force under the control of a timing device the blocking force being modified depending on a cycle of the timing devices.

Abstract: In an internal combustion engine including a camshaft for operating inlet and outlet valves of the engine with lift curves EV, AV of the inlet and the outlet valves determined by the shape of cams of the camshaft, an additional auxiliary cam which acts on the outlet valve is arranged on the camshaft, as a result of which a phase-offset auxiliary lift curve AVZ is impressed onto the outlet valve.