Abstract: The invention is applied to control technologies, and provides an air conditioner control method and device, including collecting and storing current operating parameters of chillers, chilled water pumps and condenser water pumps of an air-conditioning system according to preset period; determining energy consumption increment of the air-conditioning system under operating status of an operating parameter to be adjusted relative to that under current operating status according to the current operating parameters and the operating parameter to be adjusted inputted by a user; and adjusting operating status of the air-conditioning system according to the operating parameter to be adjusted when the energy consumption increment is less than zero.

Abstract: A method and apparatus for separating real DVC via defects from nuisance based on Net Tracing Classification of eBeam VC die comparison inspection results are provided. Embodiments include performing an eBeam VC die comparison inspection on each via of a plurality of dies; determining DVC vias based on the comparison; performing a Net Tracing Classification on the DVC vias; determining S/D DVC vias based on the Net Tracing Classification; and performing a die repeater analysis on the S/D DVC vias to determine systematic design-related DVC via defects.

Abstract: A method for short term load forecasting in a power grid includes obtaining historical data comprising power data, load data and weather data corresponding to time index data recorded from a location in a power distribution network of the power grid. The method further includes receiving power grid data comprising a plurality of power values, and a plurality of weather parameter values corresponding to a plurality of recent time instant values. The method also includes generating modified historical data using statistical techniques to rectify error conditions. The method further includes estimating one or more power values at a future time instant based on the modified historical data and the power grid data. The method also includes balancing load of the power distribution network based on the estimated one or more power values.

Abstract: A direct current (DC) to DC power converter includes a first bus converter for converting a first DC bus voltage into a first high frequency AC voltage and a second bus converter for converting a second high frequency alternating current (AC) voltage into a second DC bus voltage. The DC to DC converter also includes a resonant circuit for coupling the first bus converter and the second bus converter and a controller for providing switching signals to the first bus converter and the second bus converter to operate the power converter in a soft switching mode. The controller includes a switching frequency controller for determining a switching frequency signal for the power converter based on a reference output current and a phase shift controller for determining a phase shift signal for the power converter.

Abstract: An optimization-based method and system is disclosed to enable heterogeneous loads and distributed energy resources (DERs) to participate in grid ancillary services, such as spinning and non-spinning reserves, and ramping reserves. The method includes receiving inputs for decision parameters for optimizing an objective for obtaining flexible reserve power, solving the objective for obtaining flexible reserve power, determining a reserve power schedule for a prediction horizon for providing flexible reserve power based on the objective, generating a service bid based on the reserve power schedule for the power grid; and when the service bid is accepted, providing flexible reserve power to the power grid based on the service bid.

Abstract: A ground fault detection system for locating a ground fault in a direct current (DC) power transfer system is provided. The system includes a ground fault detection component and a current sensor. The ground fault detection component includes a first switch and a first resistive element electrically coupled to each other in a series configuration. The ground fault detection component also includes a second switch and a second resistive element electrically coupled to each other in a series configuration. Furthermore, the current sensor is operatively coupled to a load and is configured to measure a fault current at the load upon switching at least one of the first switch or the second switch to a conducting state.

Abstract: Disclosed are embodiments of a method that provides for pre-production run development of a fail signature database, which stores fail signatures for systematic defects and corresponding root causes. The fail signatures in the database is subsequently accessed and used for a variety of purposes. For example, the fail signatures are evaluated and, based on the results of the evaluation, actions are taken to prevent specific systematic defects from occurring during production runs and/or to allow for early detection of specific systematic defects during production runs. In some embodiments, following production runs, new fail signatures from failing production chips are developed and compared against the fail signatures in the fail signature database. In some embodiments, when a signature match indicates that a particular production chip has a same systematic defect with a same root cause as a particular prototype chip in-line advanced process control (APC) is performed.

Abstract: A direct current (DC) to DC power converter includes a first bus converter for converting a first DC bus voltage into a first high frequency AC voltage and a second bus converter for converting a second high frequency alternating current (AC) voltage into a second DC bus voltage. The DC to DC converter also includes a resonant circuit for coupling the first bus converter and the second bus converter and a controller for providing switching signals to the first bus converter and the second bus converter to operate the power converter in a soft switching mode. The controller includes a switching frequency controller for determining a switching frequency signal for the power converter based on a reference output current and a phase shift controller for determining a phase shift signal for the power converter.

Abstract: A swinging LED lamp with a wireless charging function comprises a fixing portion and a magnetic suspension portion, wherein the fixing portion comprises a base and a lug boss formed at an upper end of the base; a main control circuit board and a power source end are arranged in the base; an electromagnet and a transmitting coil are arranged in the lug boss; the electromagnet and the transmitting coil are electrically connected with the power source end through the main control circuit board respectively.

Abstract: The example embodiments are directed to a system and method for forecasting load flexibility of a power grid. In one example, the method includes receiving temperature values associated with temperature set points of a plurality of loads that are included on a power grid, forecasting a flexibility of the plurality of loads using a polynomial-time mixed-integer non-linear programming (MINLP) optimization based on the received temperature values for the plurality of loads, and outputting information about the forecasted flexibility for display to a display device. The MINLP optimization performs the forecasting of the load flexibility on a fine-grained basis in comparison to conventional methods and is still fast enough that it can be computed in real-time.

Abstract: The present invention discloses CrN thermoelectric material and its preparation method, which belongs to the field of thermoelectric materials. Here, we provide a study for thermoelectric properties, hardness, wear-resisting performance and thermal stability of CrN. These results show that CrN possesses excellent mechanical properties and thermal stability. The hardness of the bulk CrN sample is as high as 735.76 HV, which is far superior to most of thermoelectric materials. The thermogravimetric analysis test indicates that CrN remain stable at 873 K. Friction and wear test results demonstrate that the low friction coefficient (˜0.42) and good wear resistance of CrN. The maximum ZT value of 0.104 is observed at 848 K. In this way, CrN may be a promising thermoelectric material in extreme environment application which requires both mechanical and thermoelectric properties. Such as collision avoidance systems and outerspace.

Abstract: In accordance with one embodiment, a method for detection of power swing for at least a first range of swing angles between an internal voltage (ES) of a source-end generator and an internal voltage (ER) of a receiving-end generator is provided. The method includes obtaining a voltage magnitude (VS) of the source-end generator, and a current magnitude (IS) of the source-end generator. The method further includes estimating a total reactance (X) between the source-end generator and the receiving-end generator, and estimating a first swing angle (?) between the ES and the ER as a function of the obtained VS, the obtained IS and the estimated X. The method further includes detecting a power swing condition based on the estimated ?.

Abstract: A power system for offshore application includes a plurality of power circuits. Each of the power circuit includes an alternating current (AC) bus which supplies power to an auxiliary load and is connected to a generator. The power circuit further includes a first direct current (DC) bus having a first DC voltage supplying power to a first load and a second DC bus having a second DC voltage supplying power to a second load. The power circuit also includes a first DC to DC converter coupled between the first DC bus and the second DC bus, wherein the first DC to DC converter is configured for bidirectional power flow and an AC to DC converter coupled between the AC bus and the first DC bus. The first DC bus of at least one power circuit is coupled to the second DC bus of at least another power circuit with a second DC to DC converter.

Abstract: Disclosed are embodiments of a method that provides for pre-production run development of a fail signature database, which stores fail signatures for systematic defects and corresponding root causes. The fail signatures in the database is subsequently accessed and used for a variety of purposes. For example, the fail signatures are evaluated and, based on the results of the evaluation, actions are taken to prevent specific systematic defects from occurring during production runs and/or to allow for early detection of specific systematic defects during production runs. In some embodiments, following production runs, new fail signatures from failing production chips are developed and compared against the fail signatures in the fail signature database. In some embodiments, when a signature match indicates that a particular production chip has a same systematic defect with a same root cause as a particular prototype chip in-line advanced process control (APC) is performed.

Abstract: A system for detecting false data injection attacks includes one or more sensors configured to each monitor a component and generate signals representing measurement data associated with the component. The system also includes a fault detection computer device configured to: receive the signals representing measurement data from the one or more sensors, receive a fault indication of a fault associated with the component, generate a profile for the component based on the measurement data, and determine an accuracy of the fault indication based upon the generated profile.

Abstract: A method for modelling load in a power grid is provided. The method includes obtaining measurement data from a measurement device in the power grid, identifying one or more voltage adjustment events in the power grid from the measurement data, and generating a load model based on one or more voltage factors computed using the one or more voltage adjustment events.

Abstract: A system for increasing air flow across a heat exchanger of a vehicle is described. In one particular example, the system comprises a charge-air cooler coupled via upper and lower brackets to a vehicle body, and an axial dual fan connected to the upper and lower brackets via one or more isolators. With this arrangement, the cooling system described allows for vehicle performance to be enhanced while also increasing the durability and robustness of the system and reducing the noise produced therefrom.

Abstract: A power converter includes a first bus converter for converting a first direct current (DC) bus voltage into a first high frequency alternating current (AC) voltage and a second bus converter for converting a second high frequency AC voltage into a second DC bus voltage. A resonant circuit couples the first bus converter and the second bus converter. Further, a controller provides switching signals to the first bus converter and the second bus converter to operate the power converter in a soft switching mode. The controller includes a voltage detection circuit connected across at least one switching device of the power converter to detect a device voltage across the at least one switching device and a counter to count a number of hard switching detection pulses of the hard switching pulse signal detector.

Abstract: A circuit breaking system includes a first branch including at least one solid-state snubber; a second branch coupled in parallel to the first branch and including a superconductor and a cryogenic contactor coupled in series; and a controller operatively coupled to the at least one solid-state snubber and the cryogenic contactor and programmed to, when a fault occurs in the load circuit, activate the at least one solid-state snubber for migrating flow of the electrical current from the second branch to the first branch, and, when the fault is cleared in the load circuit, activate the cryogenic contactor for migrating the flow of the electrical current from the first branch to the second branch.

Abstract: A power system for offshore application includes a plurality of power circuits. Each of the power circuit includes an alternating current (AC) bus which supplies power to an auxiliary load and is connected to a generator. The power circuit further includes a first direct current (DC) bus having a first DC voltage supplying power to a first load and a second DC bus having a second DC voltage supplying power to a second load. The power circuit also includes a first DC to DC converter coupled between the first DC bus and the second DC bus, wherein the first DC to DC converter is configured for bidirectional power flow and an AC to DC converter coupled between the AC bus and the first DC bus. The first DC bus of at least one power circuit is coupled to the second DC bus of at least another power circuit with a second DC to DC converter.