Abstract: The present invention relates to a switched mode power supply with programmable digital control and to a power supply system comprising a plurality of switched mode power supplies. The input terminals and the output terminals of the switched mode power supply system are separated by an insulation barrier, and the switched mode power supply comprises a conversion stage having at least one switching element. The switching element of the conversion stage, as well as any switching elements of a possible pre-regulator, is digitally controlled by a programmable digital circuit. In one embodiment of the switched mode power supply, the programmable digital circuit is located on the primary side of the insulation barrier.

Abstract: The present invention relates to a switched mode power supply with programmable digital control and to a power supply system comprising a plurality of switched mode power supplies. The input terminals and the output terminals of the switched mode power supply system are separated by an insulation barrier, and the switched mode power supply comprises a conversion stage having at least one switching element. The switching element of the conversion stage, as well as any switching elements of a possible pre-regulator, is digitally controlled by a programmable digital circuit. In one embodiment of the switched mode power supply, the programmable digital circuit is located on the primary side of the insulation barrier.

Abstract: The present invention relates to a switched mode power supply with programmable digital control and to a power supply system comprising a plurality of switched mode power supplies. The input terminals and the output terminals of the switched mode power supply system are separated by an insulation barrier, and the switched mode power supply comprises a conversion stage having at least one switching element. The switching element of the conversion stage, as well as any switching elements of a possible pre-regulator, is digitally controlled by a programmable digital circuit. In one embodiment of the switched mode power supply, the programmable digital circuit is located on the primary side of the insulation barrier.

Abstract: The present invention relates to a switched mode power supply with programmable digital control and to a power supply system comprising a plurality of switched mode power supplies. The input terminals and the output terminals of the switched mode power supply system are separated by an insulation barrier, and the switched mode power supply comprises a conversion stage having at least one switching element. The switching element of the conversion stage, as well as any switching elements of a possible pre-regulator, is digitally controlled by a programmable digital circuit. In one embodiment of the switched mode power supply, the programmable digital circuit is located on the primary side of the insulation barrier.

Abstract: The present invention relates to an apparatus for supplying heat to directly cooled electronics. To ensure that directly cooled electronics are maintained at a temperature above 0° C., a circulation fan is provided in a transverse junction between an outlet duct and an inlet duct, for a recirculation flow of supplied cooling air, whereby outgoing hot air from the electronics, when necessary, may be mixed with the cold air, so as to raise the temperature of the cooling air to be supplied to the electronics.

Abstract: Connection member made of metal for electrical connection between at least two electric power distribution modules, such as power plant equipment cabinets (2) or the like, which member (1) comprises at least a first and a second joining end portion (7, 8) having their relative positions to each other in a first relative status by means of an intermediate portion (12) positioned between the joining end portions (7, 8), which intermediate portion (12) is sufficient stiff to keep the portions (7, 8) in the first relative status. The intermediate portion (12) is made so flexible that the relative positions of the first and second joining end portions (7, 8) can be adjusted to a second relative status by means of plastic deformation of the intermediate portion (12).

Abstract: A high frequency inductor includes a high permeability core, and at least one winding (6), having at least one winding layer (6). The core (2,3) exhibits at least one air-gap arranged within the at least one winding (6), whereat the at least one air-gap separates the core into at least two parts (2,3) and that a screen (14) is arranged around the at least one gap (4,4′,4″), between the winding (6) and the gap (4,4′4″). The screen is essentially concentric with the winding, and has a width which is equal to or wider than the width of the at least one gap (4,4′,4″).

Abstract: The present invention relates a method of manufacturing a high fin density heat sink comprising the steps of: aligning a plurality of length sections side by side in a mutual parallel arrangement, said length sections having a cross-section comprising a first end portion, a second end portion and a web portion connecting said first and second end portions, said first and second end portions having a width wider then the width of the web portion; clamping the parallelly arranged length sections together, such that said first and second end portions of adjacent parallel length sections are abutting against each other; and bonding the length sections together by applying at least one friction stir welding (FSW) seam across the end portions of the parallelly arranged length sections.

Abstract: A rectifier comprising a preregulator (11; 21) and a DC/DC converter (13; 23) is disclosed, comprising means for controlling the output power POUT from the DC/DC converter in dependence of the input power to the preregulator. A method of controlling such a rectifier by controlling the output power POUT in dependence of the input current IIN is also disclosed. This ensures that the output power from the rectifier is never higher than what the preregulator can supply. As a result the rectifier according to the invention may be used at any power level and any input conditions. The output power POUT may be controlled by controlling the output current IOUT from the DC/DC converter.

Abstract: The present invention relates to a method and to an arrangement for storing energy in cooling systems for cooling electronic equipment enclosed in spaces, preferably in insulated spaces. The invention provides an energy storage facility (7) which enables the differences in night-time temperatures and daytime temperatures to be used for cooling purposes, by cooling the energy storage facility (7) with an air flow at low night-time temperatures and by then delivering cold from the energy storage facility to the air flow at higher daytime temperatures, so as to cool the electronic equipment in the closed space (14).

Abstract: A full float system with Transient Free Multiple Load Disconnection Reconnection (TFMLDR) is disclosed. The system is based on a concept of always connecting loads and dedicated rectifiers together, and then connect such groups (1-n) via power switching devices (C1-Cn) to a pair of busbars. A backup battery is typically connected directly to the busbars via a respective fuse (F114 Fy). The disconnection/reconnection of individual groups to a busbar can then be controlled such that no transients are produced in the system voltage. Such a system is advantageous for reconnection of a load after a disconnection due to a mains power failure. The loads present a substantial input capacitance assisting in stabilizing DC power supply to the load and this load is directly connected to a rectifying unit delivering voltage controlled power during normal mains power operation. After a disconnection of a load from the busbar and the battery by the power switching member, a reconnection will be done in the following order.

Abstract: A new ZVS (zero-voltage-switching) snubber circuit suitable for high power boost converters used as power factor correction circuits used in AC-to-DC modules. The ZVS circuit comprises a main switch, an auxiliary switch, a load circuit, a reset circuit, a first diode, a blocking diode, and a first capacitor. The switches and the capacitor are connected in parallel. The circuit includes a blocking diode having an anode terminal connected to a drain terminal of the auxiliary switch and a cathode terminal connected to the reset circuit. At turn-off, the current tail of the main switch is taken over by the auxiliary switch. The ZVS circuit keeps the collector-emitter voltage of main switch almost zero, so that the turn-off loss is minimized.