Abstract: Some embodiments provide a DC power distribution system that includes a plurality of DC sources coupled to a plurality of DC buses via respective protection devices that are configured to selectively cause an open-circuit between the DC source and the respective DC bus in the event of a fault or overload condition on the respective DC bus. The plurality of DC buses are coupled to a load combiner, and the system is configured to supply power in parallel from the DC sources via the plurality of DC buses to at least one DC/DC step-down converter via the load combiner, which combines the power supplied via the plurality of DC buses. The DC buses, load combiner, and the DC power sources are configured such that the total maximum load current is capable of being supplied via less than all of the plurality of DC buses in the event that any one of the DC buses is non-operational.

Abstract: Some embodiments provide a DC solid state protection device that includes a capacitor configured such that in the event of a short-circuit condition, the capacitor provides all the short-circuit current required for the solid state protection device to detect a current indicative of a short-circuit condition and to cause a solid state switch to be opened, thereby tripping the solid state protection device.

Abstract: A method of adapting the power consumption of a computer, which is supplied with power from a power bus of an external electrical grid, to the power available from the power bus, wherein the computer has a processor configured for executing computing tasks, and wherein the power bus is either an AC bus or a DC bus. The method includes measuring the frequency F on the power bus in case of an AC power bus, or the voltage U on the power bus in case of a DC power bus, thus obtaining a power supply measurement indicative of the level of power supply from the power bus; and adapting the processor's computing task execution based on the obtained power supply measurement to thus maintain, increase, or reduce the computer's power consumption.

Abstract: A method for droop control in a DC system comprising a DC source, a DC bus and at least two DC application devices. Each application device having a droop curve and the DC source providing a DC voltage over the DC bus to each application device. Each application device performs a first voltage measurement during a first load condition and performs a second voltage measurement during a second load condition. Each application device adjusts its respective settings of the droop curve in accordance with the first and second voltage measurements.

Abstract: A direct current residual current protection device having a controlled current discharge having a positive and a negative input terminal, a positive and a negative output terminal, a first switch, a controller and a discharge control circuit. The first switch is interposed between the positive input terminal and the positive output terminal and operatively opens/closes an electrical connection between the positive input terminal and the positive output terminal. The controller has a current imbalance detection for a detection of a current imbalance between the positive and the negative output terminal. When the current imbalance is detected, the controller opens the first switch. The discharge control circuit is connected on one end between the first switch and the output terminal and on second end to both negative input and negative output terminal.

Abstract: A system for managing an insulation fault in an electrical installation includes a monitoring device, measuring devices configured to measure an electrical quantity in the installation, and switches controlled by the monitoring device. The monitoring device is configured to: [[·]] detect a first insulation fault in the installation; [[·]] detect a second insulation fault in the installation; [[ ]] and automatically control one of the switches associated with output terminals so as to open in order to eliminate one of the detected electrical faults, the switch to be opened being chosen depending on the location of the detected insulation faults and on predefined control laws making it possible to disconnect only some of the electrical loads.

Abstract: Some embodiments provide a DC power distribution system that includes a plurality of DC sources coupled to a plurality of DC buses via respective protection devices that are configured to selectively cause an open-circuit between the DC source and the respective DC bus in the event of a fault or overload condition on the respective DC bus. The plurality of DC buses are coupled to a load combiner, and the system is configured to supply power in parallel from the DC sources via the plurality of DC buses to at least one DC/DC step-down converter via the load combiner, which combines the power supplied via the plurality of DC buses. The DC buses, load combiner, and the DC power sources are configured such that the total maximum load current is capable of being supplied via less than all of the plurality of DC buses in the event that any one of the DC buses is non-operational.

Abstract: A protection circuit for connecting and disconnecting to a DC power source, and a DC operated device including such a protection circuit. The protection circuit has input terminals for receiving power from a DC power source and output terminals for providing power to a DC operated device; a first stage with a voltage measurement circuit coupled between the input terminals; and a second stage following the first stage including a pre-charge control circuit. The protection circuit further includes a digital controller arranged for controlling activating and de-activating a local PSU for supplying power to electronics of the DC operated device. The digital controller is arranged for measuring a voltage of the voltage measurement circuit and de-activating the local PSU when detecting a voltage drop on the first input terminal that exceeds a predetermined threshold dip and/or threshold slope.

Abstract: The present invention relates to a system for distributing electrical energy, comprising an electricity grid configured to supply electrical energy to end users, characterized in that the grid is operated on a direct voltage.

Abstract: The present invention relates to a system for distributing electrical energy, comprising an electricity grid configured to supply electrical energy to end users, characterized in that the grid is operated on a direct voltage.