Abstract: A power converter including one or more converter legs is provided. Each converter leg includes a first string including a plurality of switches coupled to each other in series. The one or more converter legs also include a second string operatively coupled to the first string at a first node and a second node in a parallel configuration, where the second string includes a plurality of switching units, and where a second string of one converter leg of the one or more converter legs is operatively coupled to second strings corresponding to other converter legs in the one or more converter legs.

Abstract: A power system for a marine ship includes a plurality of protection zones, wherein at least two protection zones are coupled to each other via at least one bus-tie converter. Each of the protection zones includes a plurality of direct current (DC) buses; wherein DC buses which do not have same DC voltage are coupled to each other via at least one DC to DC converter. Furthermore, at least one energy source is coupled to at least one DC bus via a power electronic converter.

Abstract: A system and method support a supply chain management platform for a supply chain management environment. The supply chain management platform can provide a graphical representation of one or more material inventory trends in the supply chain management environment. Additionally, the supply chain management platform can using one or more tokens to display one or more activities on the graphical representation of the one or more material inventory trends, wherein the one or more activities contribute to inventory change in the supply chain management environment. Furthermore, the supply chain management platform allows a user to perform one or more supply chain scheduling operations in the supply chain management environment based on the graphical representation.

Abstract: Power systems and methods are disclosed herein. The systems and methods use a switching system coupled with a power source and subterranean pumps for pumping a resource from beneath a surface of earth. A first capacitor is between a first switching device and a first transformer, and stores electric energy received from the first transformer to activate the first switching device. A bias capacitor is between the first capacitor and the first switching device, and receives a bias voltage via a second transformer. The bias capacitor applies the bias voltage to the first switching device to prevent the first switching device from activating unless a combination of the voltage received by the first switching device via the first transformer and the bias voltage is at least as large as the activation voltage of the first switching device.

Abstract: A high-voltage DC (HVDC) power system and a method of controlling and protecting the HVDC power system includes a plurality of sending-end (SE) modules coupled in electrical series and a plurality of receiving-end (RE) power converter modules electrically coupled to said plurality of SE modules, the RE modules coupled in a switchyard configuration, the switchyard configuration including a plurality of load branches coupled together in electrical series, each load branch including a branch bypass switch configured to bypass load current around an associated load branch, and a branch protection system.

Abstract: DC link capacitance in a bi-directional AC/DC power converter using a full-bridge or H-bridge switching circuit can be greatly reduced and the power density of the power converter correspondingly increased by inclusion of a bi-directional synchronous rectifier (SR) DC/DC converter as a second stage of the power converter and controlling the second stage with a control loop having a transfer function common to both buck and boost modes of operation of the bi-directional SR DC/DC converter and a resonant transfer function to increase gain at the ripple voltage frequency (twice the AC line frequency) to control the duty cycle of the switches of the bi-directional SR DC/DC stage and controlling the duty cycle of the switches of the full-bridge or H-bridge switching circuit using a control loop including a notch filter at the ripple voltage frequency.

Abstract: Leakage current through stray or parasitic capacitance (which is particularly large in devices such as photovoltaic cell arrays and which are damaged by such leakage currents) due to common mode switching noise in a full bridge single phase power converter is reduced at high frequencies by magnetically coupling the two phase legs on the AC side of the power converter and connecting mid points of the AC and DC sides of the power converter and is reduced at low frequencies by use of a feedback arrangement that modifies sinusoidal modulation of the switches of the full bridge converter to function as an active filter. The magnetic coupling for the two phase legs is designed in a simple manner to avoid saturation based on volt-second considerations.

Abstract: A system for transmitting direct current (DC) power includes a system DC link for carrying power from a source to a plurality of loads and alternating current (AC) to DC power converter modules coupled in series to the system DC link on a supply side of the system DC link.

Abstract: A high-voltage DC (HVDC) power system and a method of controlling and protecting the HVDC power system includes a plurality of sending-end (SE) modules coupled in electrical series and a plurality of receiving-end (RE) power converter modules electrically coupled to said plurality of SE modules, the RE modules coupled in a switchyard configuration, the switchyard configuration including a plurality of load branches coupled together in electrical series, each load branch including a branch bypass switch configured to bypass load current around an associated load branch, and a branch protection system.

Abstract: A small signal feedback loop or feed-forward loop having gain provides substantially unconditional instability in a phase locked loop when a reference phase signal is lost. The small signal feedback or feed-forward also modifies phase locked loop bandwidth when the reference phase signal is lost to increase rapidity of response to loss of reference phase signal while maintaining insensitivity to reference voltage amplitude change while the reference phase signal is present. The performance thus achieved is particularly suitable for rapid condition detection response and control of a grid connected power converter under islanding conditions.

Abstract: A method and a high-voltage DC (HVDC) power system are provided. The system includes a plurality of sending-end (SE) modules coupled in electrical series and divided into at least two groups that each operate independently with respect to an electrical ground and a plurality of receiving-end (RE) power converter modules electrically coupled to the plurality of SE modules, the plurality of RE power converter modules including a fast ground-fault detection and control device, the plurality of RE power converter modules including a receiving-end front-end DC-DC converter controller, and an output current damping control.

Abstract: A small signal feedback loop or feed-forward loop having gain provides substantially unconditional instability in a phase locked loop when a reference phase signal is lost. The small signal feedback or feed-forward also modifies phase locked loop bandwidth when the reference phase signal is lost to increase rapidity of response to loss of reference phase signal while maintaining insensitivity to reference voltage amplitude change while the reference phase signal is present. The performance thus achieved is particularly suitable for rapid condition detection response and control of a grid connected power converter under islanding conditions.

Abstract: A system and method support a supply chain management platform for a supply chain management environment. A supply chain management platform can display the violation bar on a graphical user interface (GUI), wherein the violation bar operates to show one or more violations in a supply chain management environment. Furthermore, the supply chain management platform allows a user to interact with the violation bar in order to obtain detailed information on the one or more violations or launch a tool to resolve the one or more violations.

Abstract: A hot pressing apparatus includes a positioning template having a forming region for placing a workpiece, a hot pressing template, a plurality of positioning blocks, and a lifting mechanism. A plurality of holes is formed in the forming region along a periphery of the forming region. The positioning blocks are movably disposed outside the forming region along the periphery of the forming region for positioning the workpiece in the forming region. The hot pressing template is movable between a hot pressing position and a releasing position for hot pressing the workpiece located in the forming region cooperatively with the positioning template when moving to the hot pressing position. The lifting mechanism includes a plurality of pillars movably disposed in the holes respectively and a driving device for driving each pillar to extend out from the corresponding hole so as to lift the workpiece.

Abstract: A reshaping device for reshaping a workpiece, includes a worktable, a reshaping assembly, a measuring unit, a positioning assembly, and a controller electrically connected to the reshaping assembly, the measuring unit, and the positioning assembly. The positioning assembly includes a pair of positioning subassemblies and a movable supporting subassembly. Each positioning subassembly comprises a supporting bracket and two positioning members, the two supporting brackets are distributed on the worktable, spaced from each other, for holding the workpiece. The movable supporting subassembly comprises two transmission members and two driving members. The two transmission members are laminated together and disposed on the worktable. The two driving members are respectively assembled to the two transmission members and drive the two transmission members to slide along different directions, thereby supporting the workpiece. The present disclosure further discloses a positioning assembly.

Abstract: The invention discloses the use of the G-CSF dimer in the preparation of a medicament for the treatment of neurodegenerative diseases. Use of the G-CSF dimer of the present invention can significantly increase the number of dopaminergic neuron in the substantia nigra in PD model animals and enhance the function of dopaminergic neurons. In addition, the G-CSF dimer can significantly reduce apoptosis of neuron in hippocampus and improve learning and memory ability of AD model rats. Serum half-life of the G-CSF dimer of the invention is prolonged and the loss of neurons is effectively prevented, providing a better therapeutic effect in treatment of neurodegenerative disease.

Abstract: Wobbling the operating frequency of a phase-locked loop (PLL), preferably by adding a periodic variation is feedback gain or delay in reference signal phase allows the avoidance of any non-detection zone that might occur due to exact synchronization of the phase locked loop operating frequency with a reference signal. If the change in PLL operating frequency is periodic, it can be made of adequate speed variation to accommodate and time requirement for islanding detection or the like when a reference signal being tracked by the PLL is lost. Such wobbling of the PLL operating frequency is preferably achieved by addition a periodic variable gain in a feedback loop and/or adding a periodically varying phase delay in a reference signal and/or PLL output.

Abstract: A system and method support a supply chain management platform for a supply chain management environment. The supply chain management platform can provide a graphical representation of one or more material inventory trends in the supply chain management environment. Additionally, the supply chain management platform can using one or more tokens to display one or more activities on the graphical representation of the one or more material inventory trends, wherein the one or more activities contribute to inventory change in the supply chain management environment. Furthermore, the supply chain management platform allows a user to perform one or more supply chain scheduling operations in the supply chain management environment based on the graphical representation.

Abstract: A system and method support a search process in a supply chain management environment, in order to make finding supply chain information simple. The search process can make instantaneous search suggestion based on different supply chain information categories in the environment. Furthermore, special search keywords can be used as shortcut for finding supply chain information. Also, the system can organize and display the search results in a clear and intuitive fashion, such as displaying the search results in multiple sections with mixing of graphs and texts. Additionally, the search process can be used together with other supply chain management processes.

Abstract: The present invention provides apparatus, kits and methods for assaying analytes using photoelectrochemical molecules as labels. Specifically, the present invention provides a method for assaying an analyte, comprising: a) contacting a sample suspected of containing an analyte with a reactant capable of binding and/or reacting with the analyte under suitable conditions to allow binding of analyte, if present in the sample, to the reactant; and b) assessing binding and/or reacting between the analyte and the reactant to determine presence and/or amount of analyte in the sample, wherein the reactant, analyte, or additional reactant or additional analyte or analyte analog is labeled with a photoelectrochemically active molecule.