Abstract: The present disclosure provides a docking frame for receiving at least one uninterrupted power supply module for high power uninterrupted power supply systems. The power supply system includes a bus connection for electrically connecting another uninterrupted power supply module to at least another docking frame and/or an I/O module. The one or more I/O modules, docking frames and uninterrupted power supply modules can be electrically connected in a horizontal arrangement.

Abstract: An uninterrupted power supply device is disclosed having an at least 3-phase AC power supply input for connection of an AC power supply, a DC power supply input for connection of a DC power supply, a power output for connection of a load, a power conversion unit, which interconnects the AC power supply input, the DC power supply input and the power output, whereby the uninterrupted power supply device comprises a secondary control reference, a measurement unit for measuring a voltage difference between the internal control reference and the secondary control reference, and a switching unit for connecting the internal control reference to the secondary control reference when the measured voltage difference is bigger than a threshold voltage and the AC power supply is disconnected from the uninterrupted power supply device.

Abstract: The present invention provides an uninterruptable power supply system and method with a first AC source providing three-phase AC power, a DC source providing DC power, and a power converter receiving AC power from the first AC source and/or DC power from the DC source and delivering two wire DC power to a load via a DC output line. One pole of the DC output line is connected to the neutral reference of the four-wire AC-power supply line. The system may include a bypass device for passing power from its output side to the DC output line with the bypass device and the power converter being connected in parallel to the DC output line. The bypass device may include at least one switching unit, which receives AC power at its input side, and a control unit to supply pulsed power from an AC power supply.

Abstract: The present application contemplates a power installation including an uninterruptible power supply system and a user installation, wherein the user installation includes a load, at least one AC power source, at least one secondary power supply, at least one controllable hardware component, and a system Protective Earth, the uninterruptible power supply system includes—at least one uninterruptible power supply module, and a control device for controlling the uninterruptible power supply system based on at least one system parameter of the uninterruptible power supply system, wherein the at least one uninterruptible power supply system is connected between the at least one AC power source, the at least one secondary power supply, and the load, the power installation further includes at least one installation control assembly including an assembly controller, and at least one measurement device connected to the assembly controller, wherein the installation control assembly is galvanically referenced to system P

Abstract: An uninterruptable power supply system is disclosed with a precharge converter for connecting to a DC link of the uninterruptable power supply system to a DC power supply, whereby the DC link comprises a first and a second DC bus line, which are both coupled to a common reference point, whereby the common reference point can be an AC power supply neutral of the uninterruptable power supply system, comprising power connectors for connecting to the DC power supply, a first and second output connector for connecting to the first and the second DC bus line, respectively, a converter circuit for receiving DC power from the power connectors and providing DC power to the first and second output connector, and a control unit for controlling operation of the converter circuit.

Abstract: An uninterrupted power supply device is disclosed having an at least 3-phase AC power supply input for connection of an AC power supply, a DC power supply input for connection of a DC power supply, a power output for connection of a load, a power conversion unit, which interconnects the AC power supply input, the DC power supply input and the power output, whereby the uninterrupted power supply device comprises a secondary control reference, a measurement unit for measuring a voltage difference between the internal control reference and the secondary control reference, and a switching unit for connecting the internal control reference to the secondary control reference when the measured voltage difference is bigger than a threshold voltage and the AC power supply is disconnected from the uninterrupted power supply device.

Abstract: The present disclosure provides a docking frame for receiving at least one uninterrupted power supply module for high power uninterrupted power supply systems. The power supply system includes a bus connection for electrically connecting another uninterrupted power supply module to at least another docking frame and/or an I/O module. The one or more I/O modules, docking frames and uninterrupted power supply modules can be electrically connected in a horizontal arrangement.

Abstract: A uninterruptable power supply system for supplying an electrical DC load with electric energy from an electrical network comprises an active rectifier connectable to the electrical network for rectifying an AC voltage into a DC voltage, a split DC link to be supplied from the active rectifier, the split DC link comprising two capacitors interconnected in series between a positive output and a negative output of the uninterruptable power supply system, wherein a DC link neutral point is provided between the two capacitors, and a balancing buck/boost converter connected in parallel to the split DC link between the positive output and the negative output and connected via an inductor to the DC link neutral point, such that the buck/boost converter is adapted to balance the two capacitors of the DC link, wherein an unbalance between the two capacitors is generated by one or more electrical DC loads connected between the positive output and the negative output, between the positive output and the DC link neutral

Abstract: The present invention provides an uninterruptable power supply system (100) comprising a first AC source (108) providing three-phase AC power via a four-wire AC-power supply line (112); a DC source (110) providing DC power via a DC power supply line (114), and a power converter (102) receiving AC power from the first AC source (108) and/or DC power from the DC source (110) and delivering two wire DC power to a load (118) via a DC output line (116), whereby one pole of the DC output line (116) is connected to the neutral reference of the four-wire AC-power supply line (112), the uninterruptable power supply system (100) further comprises a bypass device (142) for passing power from its output side (106) to the DC output line (116), whereby the bypass device (142) and the power converter (102) are connected in parallel to the DC output line (116), and the bypass device (142) comprises at least one switching unit (144), which receives AC power at its input side, and a control unit (138), whereby the switching un

Abstract: The present invention provides a method for controlling an uninterrupted power supply system comprising multiple converters and a control device, whereby the multiple converters are connected in parallel between a power supply side and a load side of the uninterrupted power supply system, each converter is provided to be individually activated by the control device to provide power from the power supply side to the load side, comprising the steps of determining a system load level at the load side of the uninterruptable power supply system, determining a number of required active converters based on the system load level and a system efficiency depending on the number of active converters, and activating the number of required converters based on the above determination.

Abstract: A system includes a plurality of power conversion devices, for example, uninterruptible power supply (UPS) devices, having inputs coupled in common to a power input line and each including a control circuit configured to operate the power conversion device responsive to a current sense signal at a current sense input thereof. The system further includes a first current transformer having a primary winding inductively coupled to the power input line, a current sense line coupled in series with a secondary winding of the first current transformer and a plurality of second current transformers, each including a primary winding inductively coupled to the current sense line and including respective secondary windings coupled to respective ones of the current sense inputs.

Abstract: A power conversion apparatus, such as an uninterruptible power supply, included first and second DC busses, a neutral node and an inductor configured to be coupled to a load. The apparatus further includes an inverter circuit coupled to the first and second DC busses, to the neutral node and to the inductor and configured to selectively couple the first and second DC busses and the neutral node to a first terminal of the inductor to generate an AC voltage at a second terminal of the inductor such that, in a given half-cycle of the AC voltage, the inverter circuit uses a switching sequence wherein the first DC bus, the second DC bus and the neutral node are successively coupled to the first terminal of the inductor.

Abstract: A bidirectional buck-boost DC-DC converter is particularly well suited for applications where multiple bidirectional buck-boost DC-DC converters are connected in parallel to a common battery. Multiple bidirectional DC-DC converters, as disclosed, may be connected in parallel to a common battery and, at least in boost mode, substantially no current circulates between the parallel connected bidirectional DC-DC converters.

Abstract: A power conversion apparatus, such as an uninterruptible power supply, included first and second DC busses, a neutral node and an inductor configured to be coupled to a load. The apparatus further includes an inverter circuit coupled to the first and second DC busses, to the neutral node and to the inductor and configured to selectively couple the first and second DC busses and the neutral node to a first terminal of the inductor to generate an AC voltage at a second terminal of the inductor such that, in a given half-cycle of the AC voltage, the inverter circuit uses a switching sequence wherein the first DC bus, the second DC bus and the neutral node are successively coupled to the first terminal of the inductor.

Abstract: A system includes a plurality of power conversion devices, for example, uninterruptible power supply (UPS) devices, having inputs coupled in common to a power input line and each including a control circuit configured to operate the power conversion device responsive to a current sense signal at a current sense input thereof. The system further includes a first current transformer having a primary winding inductively coupled to the power input line, a current sense line coupled in series with a secondary winding of the first current transformer and a plurality of second current transformers, each including a primary winding inductively coupled to the current sense line and including respective secondary windings coupled to respective ones of the current sense inputs.

Abstract: A bidirectional buck-boost DC-DC converter is particularly well suited for applications where multiple bidirectional buck-boost DC-DC converters are connected in parallel to a common battery. Multiple bidirectional DC-DC converters, as disclosed, may be connected in parallel to a common battery and, at least in boost mode, substantially no current circulates between the parallel connected bidirectional DC-DC converters.

Abstract: A switch-mode power supply includes an input port, an output port, and a power train operably connected to the input port and the output port. The power train includes at least one inductor and at least one switching device. The switch-mode power supply further includes a control logic configured to periodically calculate a current equivalent to current through the at least one inductor and further configured to control operation of the power train at least in part by switching the at least one switching device based on the calculated current.