Abstract: In at least one embodiment a system including at least one switch, at least one transformer, a first active bridge and at least one controller. The at least one switch receives a first direct current (DC) input signal from a first DC charging station. The at least one transformer includes a primary side and a secondary side. The secondary side of the at least one transformer is connected to the at least one switch and transfers the first DC input signal. The first active bridge is positioned on the secondary side, the first active bridge generates a DC output signal that supplies one or more vehicle loads. The DC output signal is greater than the first DC input signal and the at least one controller programmed to activate the at least one switch in response to receiving the first DC input signal.

Abstract: A voltage balancing circuit includes a direct-current-to-direct-current (DC-to-DC) voltage converter interconnecting a first battery having a first voltage and a second battery having a second voltage, wherein the DC-to-DC converter transfers electrical power from the first battery to the second battery when the first voltage is greater than the second voltage, and transfers electrical power from the second battery to the first battery when the first voltage is less than the second voltage, and wherein the transfer of electrical power from the first battery to the second battery or from the second battery to the first battery balances the electrical power difference between the first battery and the second battery.

Abstract: A voltage converter includes a converter stage having a direct current to direct current (DC-to-DC) voltage converter, wherein the converter stage receives a first DC voltage and outputs a second DC voltage different than the first DC voltage. The voltage converter also includes a boost pre-stage having a boosting circuit and a capacitor, wherein the boost pre-stage receives a DC voltage from a battery and outputs a boosted DC voltage to the converter stage as the first voltage, wherein the boosted DC voltage is greater than the DC voltage from the battery. The boosted DC voltage of the boost pre-stage output to the converter stage provides fault resistant operation of the converter stage in the event of one or more fluctuations in an operating range of the DC voltage from the battery.

Abstract: A joint application process of two treatments, scale removal and inhibitor squeeze injection, is described herein. Through the simultaneous positioning inside the reservoir, it can be applied in scale removal operations for carbonate formations, such as the pre-salt case. Accordingly, there is a way to improve the efficiency of reservoir management, through an innovation in the scaling management process.

Abstract: In at least one embodiment, a vehicle battery charger is provided. The charger includes at least one transformer, a first active bridge, a second active bridge, and at least one controller. The first active bridge includes a first plurality of switching devices being positioned with the primary. The second active bridge includes a second plurality of switching devices being positioned with the secondary to generate. The controller is configured to activate the first plurality of switching devices based on a primary control signal and to activate the second plurality of switching devices based on a secondary control signal. The controller is configured to generate the secondary control signal in accordance to a first control variable. The controller is further configured to generate a second control variable that corresponds to a phase shift between the primary control signal and the secondary control signal.

Abstract: In at least one embodiment, a battery charger is provided. The battery charger includes at least one transformer, a first active bridge, a second active bridge, and a pulsating buffer (PB) converter. The first active bridge is positioned on a first side of the transformer to provide a first voltage signal based on an input voltage signal from a mains supply of an electrical grid. The second active bridge is positioned on a second side of the transformer to provide a second voltage signal to store on one or more batteries based on the first voltage signal. The PB converter includes a plurality of switching devices to interface with the second active bridge to modify the second voltage signal. The plurality of switching devices provide a voltage for storage on at least one capacitor of the PB converter while modifying the second voltage signal.

Abstract: A DC/DC converter applies a dual active bridge (DAB) topology to convert an input DC voltage into an output DC voltage. The DC/DC converter includes a transformer, a primary stage, and a secondary stage. The primary stage includes an inductor, a first H-bridge arm having first and second power switches connected at a first node therebetween, and a second H-bridge arm having first and second capacitors connected at a second node therebetween. The inductor is connected between the first node and a terminal of an input port of the primary stage. The primary stage receives the input DC voltage at the input port of the primary stage and converts the input DC voltage into a first AC voltage. The transformer transforms the first AC voltage into a second AC voltage. The secondary stage converts the second AC voltage into the output DC voltage.

Abstract: There is provided a method for treating silage which includes adding to the silage a silage inoculant including a silage preserving effective amount of Lactobacillus hilgardii. The silage inoculant being effective to prevent or reduce aerobic spoilage.

Abstract: In at least one embodiment, a power conversion device for a vehicle is provided. At least one controller is configured to selectively switch a first plurality of switches and a second plurality of switches to convert a first input signal into a first output signal. The at least one controller is further configured to receive a high voltage signal on a primary side and to receive a low voltage signal on the secondary side. The at least controller is further configured to generate a compensation factor based at least on the high voltage signal and the low voltage signal. The at least one controller is further configured to provide a first activation signal to control the switching of the first plurality of switches and the second plurality of switches based at least on the compensation factor.

Abstract: A DC-DC converter includes a first switching network that receives the input DC voltage and outputs a first AC voltage, a transformer, and a secondary side conversion circuit that receives the second AC voltage and outputs the output DC voltage. The transformer includes a first plurality of primary windings, a second plurality of primary windings and a plurality of secondary windings. The transformer is configured to receive the first AC voltage and outputting a second AC voltage. When the input DC voltage is intended to be used in a low voltage range, the first plurality of primary windings and the second plurality of primary windings are configured to be in parallel at the time the DC-DC converter is manufactured. When the input DC voltage is intended to be used in a high voltage range the first plurality of primary windings and the second plurality of primary windings are configured to be in series at the time of manufacture.

Abstract: The present invention refers to a portable analysis system that, from analytical methodologies set based on digital images acquired by portable devices and accessories developed in an expedited way, allows the performance of the analytical test without technical deepening by the executor of the analysis. Such methodologies allow the evaluation of chemical species relevant to the O&G sector, for following up compositional parameters in aqueous samples and analytical monitoring of production and effluent treatment. Thus, a quick implementation is possible considering eventual diagnoses associated with the parameters of interest and following up of different processes. The application can be in any laboratory present in an operational unit, whether offshore or onshore, as well as it can be used for direct measurement in the field, depending on the necessary environmental and operating conditions.

Abstract: A polymeric composition may include a thermoplastic polymer including: at least one monomer selected from the group consisting of vinyl esters, C2-C12 olefins, and combinations thereof; and a dynamic crosslinking group; and a dynamic crosslinking system to dynamically crosslink the thermoplastic polymer.

Abstract: The present invention addresses to a method of removing scale from the DHSV of the oil production string aiming at maintaining the production of the wells and thus avoiding the loss of production. First, a neutralizing solution is placed in the service line, before pumping the scale removing solution through the string to act on the DHSV. Next, the acid is pumped into the production string to react with the calcium carbonate scale. After the time for the dissolution of the scale inside the DHSV, the well is opened for production by the service line. The spent acid is mixed with the neutralizing solution inside the service line, reducing its corrosiveness in relation to the service line, contributing to its preservation.

Abstract: The invention is related to a joint application process of two treatments, scale removal and inhibitor squeeze injection. Through the simultaneous positioning inside the reservoir, it can be applied in scale removal operations for carbonate formations, such as the pre-salt case. Accordingly, there is a way to improve the efficiency of reservoir management, through an innovation in the scaling management process.

Abstract: A DC-DC converter includes a first switching network that receives an input DC voltage and outputs a first AC voltage, a transformer, and a secondary side conversion circuit. The first switching network receives an input DC voltage. The transformer includes a middle-point primary tap such that when the input DC voltage is in a low voltage range, the middle-point tap of the transformer primary is connected to the input DC voltage causing current to flow through the first plurality of primary windings in parallel to current flowing through the second plurality of primary windings and when the input DC voltage is in a high voltage range, the middle-point tap is disconnected from the input DC voltage causing current to flow through the first plurality of primary windings in series with current flowing through the second plurality of primary windings.

Abstract: In at least one embodiment, a vehicle battery charger is provided. At least one transformer includes a first winding and a second winding on a primary side of the transformer that are connected to one another to form a middle point. The middle point of the at least one transformer receives an input voltage signal from a mains supply. A half-bridge rectifier receives the input voltage signal from the mains supply to enable the middle point of the least one transformer to receive the input voltage signal from the mains supply. A first active bridge includes a first plurality of switching devices to receive a first input signal directly from the first winding and to receive a second input signal directly from the second winding. The first input signal and the second input signal are out of phase with one another to minimize electromagnetic interference within the vehicle battery charger.

Abstract: The present invention addresses to an adaptation of a laser system in a reactor for the application of laser radiation, promoting the thermal catalysis of the complexation reactions of barium sulfate (BaSO4), strontium sulfate (SrSO4) and CaCO3 with application in fields of drilling and completion of wells, as well as lifting and draining systems; in this case, aiming at the removal of scale at an appropriate temperature for the complexation and consequent dissolution of the scale salt in subsea equipment of the production systems.

Abstract: The present invention addresses to a method that uses surface-active surfactants ionic liquids (ILs) with an affinity for water to capture CO2, especially ILs derived from surfactants, of low production cost, fluoride-free, causing a low environmental impact in its use and high yield of CO2 sorption. The CO2 sorption method consists of contacting a gas mixture with at least one of the described ILs, at the working temperature, pressure and partial pressure of CO2. The removal of CO2 is done by pressure reduction. ILs can be reused without loss of efficiency.

Abstract: Examples described herein generally relate to deploying, on multiple separate devices, an instance of an application having a baseline version of a model for executing in a real-world context, receiving, from each instance of the application, interaction data from the application based on using the model to perform inferences during execution of the instance of the application, and training, based on the interaction data, the model to generate a trained version of the model for performing subsequent inferences during execution of the application.

Abstract: The present invention addresses to a remote divergence method for inhibiting or removing scaling in wells equipped with intelligent completion (IC), including sealing failures, in which a mixture of viscous gel and solid material in different granulometries is used (7) and spheres soluble in water (8) and in oil (6), aiming at maintaining the production of wells equipped with intelligent completion, as well as reducing costs in relation to operations commonly performed with rigs.