Abstract: A modular gas-insulated gas-cooled high-voltage converter station, a method of operating, and an electric power switching module are provided. The converter station includes at least one gas-insulated enclosure having a circuit configured to convert electrical power. A fill gas is provided in fluid communication with the gas-insulated enclosure and in thermal communication with the circuit, the fill gas having a Global Warming Potential (GWP) of less than 5000.

Abstract: Various arrangements described herein relate to an improved package design for power electronics. In one embodiment, a die package is disclosed. The die package includes a substrate. The substrate including a top-side copper trace, including a cutout. The substrate further includes a bottom-side copper trace. The substrate also includes a ceramic layer sandwiched between the top-side copper trace and the bottom-side copper trace. The die package includes a die mounted within the cutout to the top-side copper trace.

Abstract: Power systems including converters that exhibit reduced common mode voltage emissions are described. In one example, a power converter system includes an input and an output, a multi-level switch bridge coupled between the input and the output, an input capacitor branch coupled across the input, an output capacitor branch coupled across the output, and a controller configured to generate switching control signals for the multi-level buck-boost switch bridge. The multi-level switch bridge also includes a plurality of inductors in one example. In one case, a quadrangular or quadrangle control mode can be relied upon to switch the multi-level switch bridge, to minimize the ripple in the inductors, achieve zero voltage switching, reduce common mode electromagnetic interference emission by the converter, and for other benefits.

Abstract: Power converters including electronic-embedded transformers for current sharing and load-independent voltage gain are described. An example power converter system includes an input, an output, a power converter between the input and output, and a controller. The converter includes a first bridge, a second bridge, and an electronic-embedded transformer between the first and second bridge. The electronic-embedded transformer includes a bidirectional coupling switch bridge. The controller generates drive control signals for quasi-trapezoidal current modulation control of the bidirectional coupling switch bridge. The controller is configured to generate the drive control signals based on a commutation coefficient k and a switching frequency for the power converter. The commutation coefficient k can be set based on an inductance in the electronic-embedded transformer, a capacitance in the bidirectional coupling switch bridge, and a margin for resonant current commutation.

Abstract: An image rendering method includes: acquiring a project scene, materials of an object in the project scene including a light source material, and the light source material being a material that is endowed with a light source attribute by setting a corresponding shading model to be a custom grid light source shading model; searching object grids with the light source material from the project scene, and performing light source structure conversion on the object grids with the light source material to obtain light source grids, the object grids being grids used for forming the object in the project scene; and using each of the light source grids as a light source, to perform direct illumination rendering on each of pixels of the image representing the project scene, and fusing a direct illumination rendering result of each of the light source grids for each of the pixels to obtain a rendered target image.

Abstract: A thermal insulation canister includes a canister body and a thermal insulation cover. The thermal insulation cover is covered on the canister body. The thermal insulation cover includes an upper cover body, a sealing ring, an adjusting frame and a trigger, the upper cover body is configured to protect an internal structure of the thermal insulation cover. The adjusting frame is rotatably connected to the trigger through the upper cover body. The sealing ring is provided between the upper cover body and the adjusting frame. The adjusting frame is driven by the rotating trigger to compress the sealing ring, which deforms to the side and abuts against the canister body, the sealing ring deforms to the side of the canister body and abuts against the canister body.

Abstract: A heat transfer system includes a first electrocaloric module comprising a first electrocaloric material, a first high-side electrode, and a first low-side electrode, arranged to impart an electric field to the electrocaloric material; a second electrocaloric module comprising a second electrocaloric material, a second high-side electrode, and a second low-side electrode, arranged to impart an electric field to the electrocaloric material; a power convertor including a power source configured to supply power to a high side bus and a low side bus; a controller configured to operate the power convertor through a plurality of stages.

Abstract: An example current sensor for a power converter includes a sensing circuit configured to generate an output voltage based on a device current flowing through a power converter. The output voltage is representative of a measurement of the device current. The current sensor can further include a compensation circuit electrically coupled to the sensing circuit, and the compensation circuit can include a compensation resistor and a processor. The compensation circuit can be configured to receive the output voltage and adjust an error of the output voltage as compared to the device current. The error can be caused by a parasitic resistance existing in the power converter.

Abstract: An example printed circuit board (PCB) with integrated current sense includes a direct current (DC) bus including a first DC trace and a second DC trace. The PCB with integrated current sense further includes a planar Rogowski coil positioned between the first DC trace and the second DC trace and electrically separated from the first DC trace and the second DC trace. The planar Rogowski coil can extend beyond an edge-to-edge distance between a first side edge and a second side edge of the first DC trace in a first direction. The planar Rogowski coil can further extend beyond an edge-to-edge distance between a first edge and a second edge of the second DC trace in the first direction.

Abstract: A thermal insulation canister includes a canister body and a thermal insulation cover. The thermal insulation cover includes an upper cover body, a sealing ring, an adjusting frame, a pressure valve, a trigger and an inner cover body, each of two sides of the trigger is equipped with a trigger connecting shaft, the upper cover body is equipped with two installation holes. The trigger connecting shaft is slidably connected to the installation hole. Two adjusting shafts are fixedly installed on an upper end surface of the adjusting frame. The two adjusting shafts passes is rotatably connected with the trigger connecting shaft. The trigger connecting shaft is configured to drive the adjusting shaft to move in a vertical direction. The sealing ring is positioned between the upper cover body and the adjusting frame. The canister body is further equipped with an inner canister body.

Abstract: A thermal insulation canister includes a canister body and a thermal insulation cover. The thermal insulation cover includes an upper cover body, a sealing ring, an adjusting frame, a pressure valve, a trigger and an inner cover body, each of two sides of the trigger is equipped with a trigger connecting shaft, the upper cover body is equipped with two installation holes. The trigger connecting shaft is slidably connected to the installation hole. Two adjusting shafts are fixedly installed on an upper end surface of the adjusting frame. The two adjusting shafts passes is rotatably connected with the trigger connecting shaft. The trigger connecting shaft is configured to drive the adjusting shaft to move in a vertical direction. The sealing ring is positioned between the upper cover body and the adjusting frame. The canister body is further equipped with an inner canister body.

Abstract: A multi-three-phase motor drive system includes a power distribution network, a motor drive unit, and a motor network. The power distribution network includes a partitioned direct current (DC) link connected between a positive voltage rail and a negative voltage rail. A connection between the positive voltage rail and a mid-point node defines an upper portion of the partitioned DC link and a connection between negative voltage rail and the mid-point node defines a lower portion of the partitioned DC link. The motor drive unit includes a plurality of inverter units, and the motor network includes a plurality of motor windings which are each connected to a respective inverter unit. A first group of the inverter units is connected in parallel with the upper portion of the portioned DC link, and a second group of the inverter units is connected in parallel with the lower portion of the partitioned DC link.

Abstract: Power converters including electronic-embedded transformers for current sharing and load-independent voltage gain are described. An example power converter system includes an input, an output, a power converter between the input and output, and a controller. The converter includes a first bridge, a second bridge, and an electronic-embedded transformer (EET) between the first and second bridge. The EET includes a capacitor and a capacitance coupling switch bridge. The controller generates phasing drive control signals for trapezoidal current modulation control of the capacitance coupling switch bridge of the EET. The controller is configured to generate the phasing drive control signals based on a phase shift coefficient, k, to set a duty cycle of a voltage from the capacitance coupling switch bridge. The controller is also configured to vary k from between 0 to 0.5 based on a load applied to the power converter system or other operating aspects of the power converter.

Abstract: Power converters including electronic-embedded transformers for current sharing and load-independent voltage gain are described. An example power converter system includes an input, an output, a power converter between the input and output, and a controller. The converter includes a first bridge, a second bridge, and an electronic-embedded transformer between the first and second bridge. The electronic-embedded transformer includes a bidirectional coupling switch bridge. The controller generates drive control signals for quasi-trapezoidal current modulation control of the bidirectional coupling switch bridge. The controller is configured to generate the drive control signals based on a commutation coefficient k and a switching frequency for the power converter. The commutation coefficient k can be set based on an inductance in the electronic-embedded transformer, a capacitance in the bidirectional coupling switch bridge, and a margin for resonant current commutation.

Abstract: Gate control of power semiconductor devices using reduced gate drivers is disclosed. A circuit breaker may include a multitude of transistors, such as insulated gate bipolar transistors (IGBTs), connected in series with one another. Each transistor may be connected to a respective gate resistor. Diodes may be connected between various gate resistors. One or more resistor-capacitor (RC) snubber circuits may be provided in parallel with one or more of the transistors. Likewise, one or more metal-oxide varistors (MOVs) may be connected in parallel to one or more of the transistors. A gate driver (e.g., a single gate drive) may be connected to the one or more diodes and an emitter of at least one of transistors.

Abstract: Power converters including electronic-embedded transformers for current sharing and load-independent voltage gain are described. In one example, a power converter system includes an input, an output, a power converter between the input and output, and a controller. The converter includes a first bridge, a second bridge, and an electronic-embedded transformer (EET) between the first and second bridge. The EET includes a capacitor and a capacitance coupling switch bridge. The controller generates switching control signals for the first and second bridges and phasing drive control signals for the capacitance coupling switch bridge in the EET. The controller applies a phase shift to the phasing drive control signals for the EET as compared to the switching control signals for the first and second bridges, so that the voltage across the capacitor in the EET cancels the leakage inductance of the transformer windings in the EET, at any switching frequency.

Abstract: Provided is a power converter that includes at least one leg having a first string that includes a plurality of switching units, a plurality of unidirectional current switches, a first connecting node, and a second connecting node, such that the first string is operatively coupled across a first and a second bus, and a second string operatively coupled to the first string via the first connecting node and the second connecting node such that the second string includes a plurality of unidirectional current switches and a fourth connecting node operatively coupled to a fourth bus. The power converter also includes a controller configured to control switching of the plurality of switching units.

Abstract: A job processing method is provided. In this method, after receiving a to-be-processed job, a scheduling node in a high-performance computing system predicts, based on a category of the job, a quantity of resources consumed in real time in a process of executing the job. Because quantities of resources consumed in real time in a process of executing jobs of a same category are close, compared with a specified resource quantity, a predicted resource quantity is closer to a quantity of resources actually consumed by the job.

Abstract: A job processing method is provided. In this method, after receiving a to-be-processed job, a scheduling node in a high-performance computing system predicts, based on a category of the job, a quantity of resources consumed in real time in a process of executing the job. Because quantities of resources consumed in real time in a process of executing jobs of a same category are close, compared with a specified resource quantity, a predicted resource quantity is closer to a quantity of resources actually consumed by the job.

Abstract: The present application discloses a class of guaianolide sesquiterpene lactone derivatives and pharmaceutical use thereof. The guaianolide sesquiterpene lactone derivative or a pharmaceutically acceptable salt thereof is shown as general formula I. In the present application, a class of novel guaianolide sesquiterpene lactone derivatives are found by structural optimization with abundant natural ingredients such as parthenolide and dehydrocostus lactone as raw materials, which derivatives have good inhibitory activity on the activation of the NLRP3 inflammasome, and the chemical stability, water solubility and oral bioavailability of which are significantly improved, and it is verified by experiments that the derivatives have inhibitory effects on the activity of the NLRP3 inflammasome and have potential pharmaceutical applications.