Abstract: To provide a power supply unit configured to determine the boundary between the operation modes (continuous mode and discontinuous mode) of a converter with high accuracy. The power supply unit is a power supply unit wherein the controller controls a value of output current of the power supply by controlling a duty ratio by switching the second switch; wherein the controller detects the current value of the reactor acquired by the current sensor, at a frequency of at least n (n is an integer of 2 or more) times in a cycle of the switching.

Abstract: A frequency converter includes: at least one bridge arm, wherein a shunt resistor is arranged in the bridge arm; an evaluation device having an input connection, the evaluation device being designed to evaluate a measurement signal which is present at the input connection and which is dependent on a voltage drop across the shunt resistor, in order to determine a measured variable; and a voltage peak suppression device, which is designed to short-circuit the input connection of the evaluation device when a voltage peak occurs at the shunt resistor.

Abstract: An identification apparatus for identifying a type of a sheet obtains, by a sensor, a plurality of parameters including a parameter concerning a characteristic of the sheet, and identifies the type of the sheet based on a result of inputting the plurality of parameters obtained by the sensor to an estimation model obtained by machine learning using, as input data, parameters corresponding to the parameters which are obtained by the sensor and include a first parameter and a second parameter classified in accordance with whether a value tends to change due to a predetermined element, and also using, as supervised data, a type of a sheet if the parameters are obtained.

Abstract: Embodiments relate to a motor simulator for an inverter under test (IUT), the motor simulator comprising: a voltage follower inverter for at least partially cancelling an output voltage of the IUT; and an output current control unit for controlling an output current of the IUT on the basis of an estimated current of a simulation target motor.

Abstract: A fault detection method for a three-phase power distribution system, which includes three phase lines and a neutral line. The three phase lines intersect with the neutral line at a neutral point, the three phase lines include a first phase line, a second phase line, and a third phase line, and at least one of the three phase lines is connected to the neutral line. The method includes: obtaining a voltage between every two phase lines; obtaining a voltage between each phase line and the neutral point based on the voltage between every two phase lines; obtaining a voltage between the neutral line and the neutral point based on a voltage between each phase line and the neutral line and the voltage between each phase line and the neutral point; and detecting the voltage between the neutral line and the neutral point, whether a fault occurs in the neutral line.

Abstract: A method and system determine the characteristics of drive devices and load devices in selected pixels in an array of pixels in a display in which each pixel includes a drive device for supplying current to a load device. The method and system supply current to the load device via the drive device in a selected pixel, the current being a function of a current effective characteristic of at least one of the drive device and the load device; measure the current via a measurement line that is shared by adjacent pixels, and extract the value of a selected effective characteristic of one of the drive and load devices from the effect of the current on another of the drive and load devices. Current may be measured via a read transistor in each pixel.

Abstract: A DC-AC inverter system using a state observer and a control method thereof are provided. The control method of the DC-AC inverter system includes the following steps. The state observer outputs a filter-capacitor-current estimation value at a next sampling time according to a DC link voltage at a current sampling time and a filter-capacitor-voltage actual value at the current sampling time. The filter-inductor-current estimation value at the next sampling time is compared with the filter-capacitor-current estimation value at the next sampling time to obtain a load current estimation value at the next sampling time. An inductor voltage estimator outputs a filter-inductor-voltage estimation value at the next sampling time according to the load current estimation value at the next sampling time. A feed-forward control is performed according to the filter-inductor-voltage estimation value at the next sampling time.

Abstract: The present disclosure describes an example circuit for selecting a voltage supply. The circuit includes a first control switch, a first voltage supply switch, a second control switch, and a second voltage supply switch. The first control switch is configured to receive a control signal and a first voltage supply. The first voltage supply switch is electrically coupled to the first control switch and is configured to receive a second voltage supply. The second voltage supply switch is electrically coupled to the second control switch and configured to receive the first voltage supply. The first and second voltage supply switches are configured to selectively output the first and second voltage supplies based on the control signal.

Abstract: A system and method for measuring a capacitance value of a capacitor are provided. In embodiments, a resistor is coupled to a terminal of the capacitor. A difference in voltage at the terminal between a first time and a second time during a discharge routine of the capacitor is measured. The discharge routine includes sinking a current through a discharge circuit coupled to the resistor from first to second. Integration of a difference in voltage at terminals of the resistor during the discharge routine between the first and second times is also measured. The capacitance value is computed based on the measured difference in voltage, the measured integration, and the resistance value of the resistor. The health of the capacitor is determined based on a difference between the computed capacitance value and a threshold value.

Abstract: An apparatus and system for remote attestation of a power delivery network is disclosed. Embodiments of the disclosure enable remote attestation of the power delivery network by storing a trusted golden reference waveform in secure memory. The trusted golden reference waveform characterizes a power delivery network in response to a load generated on the power delivery network. A remote cloud server generates a server-generated remote attestation of the power delivery network by receiving an attestation packet from the power delivery network and verifying whether the attestation packet is consistent with an expected power delivery network identity.

Abstract: A method and a system for online monitoring of a health status of an insulated-gate bipolar transistor (IGBT) module are provided, which belong to the field of IGBT status monitoring. In order to overcome the inability to real-time monitor health statuses of existing IGBT modules, the method of the disclosure includes the following steps. A current sensor is used to measure a collector current of each IGBT module. A collected current value is substituted into a simulation model to obtain a current imbalance rate. A failure module is located according to the current imbalance rate and temperature to achieve the objective of monitoring an IGBT health status.

Abstract: A memory sub-system configured to use first values of a plurality of optimized read voltages to perform a first read calibration, which determines second values of the plurality of optimized read voltages. A plurality of shifts, from the first values to the second values respectively, can be computed for the plurality of optimized read voltages respectively. After recognizing a pattern in the plurality of shifts that are computed for the plurality of voltages respectively, the memory sub-system can control and/or initiate a second read calibration based on the recognized pattern in the shifts.

Abstract: The invention discloses a method and a system for correction of the junction temperatures of an IGBT module in a photovoltaic inverter.

Abstract: A current sensing system, comprising at least one magnetic tunnel junction device placed adjacent to a current carrying conductor electrically connected to a battery of a vehicle. The magnetic tunnel junction device is configured to measure a magnetic field around the conductor. A monitoring device is operatively connected to the magnetic tunnel junction device, wherein the monitoring device is configured to receive the magnetic field measurement and determine an estimate of the current flowing through the conductor.

Abstract: A current sensor configured to measure a current value of a current flowing through each of a first conductor, a second conductor, and a third conductor, the current sensor comprising: first to third magnetic detection units provided with detection surfaces and configured to output first to third detection result; first to third amplification factor correction units configured to correct first to third amplification factors set in advance based on an ambient temperature; first to third amplifiers configured to amplify the detection results based on the corrected amplification factors and output the amplified detection results as amplified signals; first to third influence degree correction units indicating influence degrees of the magnetic fields generated by the current flowing through the conductors; and first to third correction units configured to correct the amplified signals based on the corrected influence degrees and the amplified signals.

Abstract: An imaging element which is formed by sequentially stacking at least an anode, an anode-side buffer layer, a photoelectric conversion layer, and a cathode, in which the anode-side buffer layer includes a material having structural formula in which thiophene and carbazole are combined.

Abstract: A method for detecting error on an input/output (IO) pin of an integrated circuit includes using the input/output pin of the integrated circuit in a first mode by receiving or sending a first value as analog data or digital data. The input/output pin is toggled in a test mode after each instance of using the input/output pin in the first mode. The test mode includes providing a second value disparate from the first value during a set time after using the input/output pin in the first mode, receiving back during the set time a resulting value based on providing the second value, measuring the resulting value, and identifying an error on the input/output pin of the integrated circuit based on the measured resulting value.

Abstract: Embodiments of the present disclosure relate to a memory system, a memory controller, and a method of operating the memory system. According to the embodiments of the present disclosure, the memory system may search for a target command, to be processed before entering a power-off state, in a plurality of command queues that queue commands to be inputted to the memory device when a sudden power off (SPO) signal is transmitted from a power management core to a flash interface layer core, may enqueue the target command into a top priority command queue having the highest priority among the plurality of command queues, and may input the target command enqueued into the top priority command queue to the memory device before entering the power-off state.

Abstract: An apparatus and method for detecting leakage current in a non-volatile memory array. A reference current is connected to a leakage detection circuit. A reference code is determined for the leakage detection circuit coupled to a switching circuit. The reference code establishes a leakage current threshold. The reference current is disconnected from the leakage detection circuit and the switching circuit. Next, the leakage detection circuit is connected to a set of word lines of a storage block of a non-volatile memory array by way of the switching circuit. A memory current is generated within the set of word lines. A leakage code is determined for the set of word lines representing leakage current from the word lines in response to the memory current. The leakage code is compared with the reference code. If the leakage code exceeds the reference code, the storage block is deemed unusable.

Abstract: The present disclosure relates to a detector comprising a comparator receiving on a voltage input a voltage value to be detected; a digital to analog converter coupled to a reference voltage potential having an output connected to another input of the comparator; and a Finite State Machine receiving an output of the comparator and producing digital outputs for inputs of a memory controller.

Abstract: A computing system has a processor that receives client data defining one or more electrical loads of an industrial automation project. The computing system generates one or more motor control lineups based on the client data and historical data associated with a plurality of previous industrial automation projects. The computing system receives a selection of a motor control lineup form a plurality of motor control lineups. A visual representation of the selected motor control lineup is generated and transmitted for display on a graphical user interface.

Abstract: There are provided a power supplying system, an electronic apparatus, and a power supplying method capable of surely preventing an abnormal end even in a case where supply of external power is disconnected in an apparatus having no battery with a valid voltage.

Abstract: A system for determining a state of a photovoltaic panel. The system includes a data acquisition device having a circuit and a communication module. The circuit is arranged to transmit excitation signals to a photovoltaic panel and detect response signals generated by the photovoltaic panel in response to the excitation signal, during normal operation of the photovoltaic panel. The communication module is arranged to communicate the response signals to a control device for analysis and determination of a state of the photovoltaic panel.

Abstract: This method for determining a process noise covariance matrix for tuning an observer of the state-of-charge of a battery of electrical accumulators includes the steps of: determining, for each operating point of a set of operating points of the battery, a value of at least one component (R0, Z1) of an electrical model of the battery; obtaining, for each of said values, a determination error (r(SOCk)) for said component; storing the values of said component and the determination errors; calculating the standard deviation (?[r(SOC1 . . . p)]) for the determination errors for various operating points of the battery; and producing the covariance matrix (Q) on the basis of the calculated standard deviation.

Abstract: Provided is an artificial intelligence system. The system includes a first sensor configured to generate a first sensing signal during a sensing time, a second sensor disposed adjacent to the first sensor and configured to generate a second sensing signal during the sensing time, a pre-processing unit configured to select valid data according to a magnitude of a differential signal generated based on a difference between the first sensing signal and the second sensing signal, and an artificial intelligence module configured to analyze the valid data to generate result data.

Abstract: A method for performing synchrophasor estimation of an input signal, whereby the input signal is a sinusoidal power system voltage or current signal, comprising: a. Periodic sampling of a continuous time-domain waveform, consisting of a power system voltage or current signal, to obtain a discrete time-domain function; b. Transforming a discrete time-domain function to a discrete frequency-domain function; c. Estimating from the discrete frequency-domain function the instantaneous parameters of a synchrophasor of the sampled continuous time-domain waveform, the instantaneous parameters comprising a frequency, an amplitude and a phase angle. The method is directed to an improvement of the enhanced IpDFT-based synchrophasor estimation which takes into account interharmonic tones.

Abstract: An electronic device for monitoring an electrical quantity out of a voltage and arc intensity relative to an alternating current flowing in an electrical conductor, includes a measurement module configured to measure at least one value of the electrical quantity, a wireless transceiver, and a transmission module linked to the wireless transceiver. The monitoring device furthermore includes a computation module configured to compute at least one parameter for monitoring the electrical quantity as a function of at least one measured value of the electrical quantity, each monitoring parameter being chosen from an angular phase of the electrical quantity and a modulus of the electrical quantity, the transmission module being configured to transmit, to another electronic device, a data message containing at least one computed monitoring parameter.

Abstract: Technology for physical defect detection in an integrated memory assembly having a control semiconductor die and a memory semiconductor die is disclosed. The control die compares actual current usage during a memory operation (such as a program operation) with expected current usage. In the event that the actual current usage deviates from the expected current usage by more than a threshold, a region of the memory structure is suspected as having a physical defect. For example, the selected word that is connected to the memory cells that were programmed may be suspected as having a physical defect. If a region is suspected as having a physical defect, a data integrity check may be performed in that region. If the data integrity check fails, the region may be marked as ineligible to store data.

Abstract: A method for diagnosing the wear status of an electrical switching unit including a phase for monitoring the electrical unit. The monitoring phase uses: learning data previously loaded and representative of the type of electrical unit, and initialization data corresponding to the unit to be monitored and stored in memory during an initialization phase. The monitoring phase includes the measurement and the acquisition of a measurement curve upon the opening of the electrical unit, the determination of values of local descriptors with little sensitivity to the temperature from the measurement curve as a function of values of the measurement curve, of initialization data, and of learning data, the determination of a global status class as a function of the positioning values. The device and the electrical unit implement the method.

Abstract: The invention relates to a multi-level modular converter provided with a control circuit comprising a computer to calculate an internal control setpoint of the converter and an energy management circuit allowing a power setpoint to be determined that is to be transmitted to the alternating electrical power supply network, the control circuit being configured to regulate the voltage at the point of connection of the converter to the direct electrical power supply network and to regulate the voltage at the terminals of each capacitor modelled as a function of the internal control setpoint and of the power setpoint to be transmitted to the alternating electrical power supply network.

Abstract: Various apparatuses, systems, methods, and media are disclosed to provide over-voltage protection to a data interface of a multi-protocol memory card that includes a first communication interface and a second communication interface that enable communication using different protocols. An interface voltage protection circuit includes a control circuit configured to receive a first supply voltage for operating the first communication interface. The interface voltage protection circuit further includes a pull-down circuit operatively connected with the control circuit, configured to pull down a voltage at a supply voltage rail of the second communication interface such that a voltage at a plurality of connector terminals of the second communication interface is lower than the first supply voltage.

Abstract: According to one aspect disclosed herein, there is provided a method of using a lighting system comprising multiple luminaires, the method comprising: gathering information relating to a placement of a plurality of the luminaires within the environment; based on the gathered information, deducing one or more spatial characteristics of the environment, the spatial characteristics comprising information on one or more zones of the environment; and storing an environment profile for the environment in a storage location accessible by a recommendation engine, the environment profile comprising at least the spatial characteristics of the one or more zones, thereby causing the recommendation engine to filter a set of items based on the spatial characteristics and thereby recommend a subset of the items resulting from the filtering.

Abstract: The present disclosure generally relates to a method and device for improving data read request scheduling in storage devices. When a connection between a host computer and a storage device is established, a controller of the storage device sets a maximum outstanding read requests threshold for the storage device, based on the host-device connection protocol. The maximum outstanding read requests threshold can be dynamically adjusted in response to changes in the host-device connection protocol. Further, a latency tracker of the controller may be used to measure latency between the host computer and the storage device and adjust the maximum outstanding read requests threshold accordingly.

Abstract: A system and method is disclosed for detecting a specific voltage phase, from a multiphase voltage source, and a specific outlet of an intelligent power strip, that is associated with a residual current flow. The method accomplishes this by using a system that employs a statistical time series analysis using a Pearson's correlation coefficient calculation to measure the linear dependence between the discretely sampled residual current waveform and each phase and outlet's discretely sampled current waveforms, in turn. A residual current as low as 1 mA can be accurately measured and its associated voltage phase source, as well as which outlet of an intelligent power strip it flows out of, can be reliably determined.

Abstract: Embodiments relate to functional test methods useful for fabricating products containing Light Emitting Diode (LED) structures. In particular, LED arrays are functionally tested by injecting current via a displacement current coupling device using a field plate comprising of an electrode and insulator placed in close proximity to the LED array. A controlled voltage waveform is then applied to the field plate electrode to excite the LED devices in parallel for high-throughput. A camera records the individual light emission resulting from the electrical excitation to yield a function test of a plurality of LED devices. Changing the voltage conditions can excite the LEDs at differing current density levels to functionally measure external quantum efficiency and other important device functional parameters. Spectral filtering is used to improve measurement contrast and LED defect detection.

Abstract: A method of monitoring state of health for an energy generation system includes receiving a measurement of a parameter of an electrical component in the PV energy generation system at an instance in time, referencing a look-up table containing several values of the parameter representing an expected degradation trend across a progression of time for the electrical component, comparing the measurement to an expected value of the expected degradation trend for a period of time corresponding to the instance in time, and initiating a preventative measure based upon the comparison between the measurement and the expected value of the expected degradation trend.

Abstract: This disclosure is directed to circuits and techniques for detecting or responding to temperature of a power switch based on paired measurements of current and voltage. A driver circuit for a power switch may be configured to perform a current measurement and a voltage measurement associated with a temperature-dependent circuit element and control the power switch based at least in part on the current measurement and the voltage measurement. In some examples, the current and voltage measurements may be used to determine the temperature of the power switch.

Abstract: A method for generating/updating a database of current-voltage characteristic curves is disclosed. This method includes simulating for at least one combination of a topology of a photovoltaic cell group, an internal cell temperature(s) and a cell irradiation(s), a model of the photovoltaic cell group to provide a representative current-voltage characteristic curve, and clustering the current-voltage characteristic curves to identify at least one plurality of similar current-voltage characteristic curves.

Abstract: An electrical system includes a battery pack, sensors, and a controller. The sensors configured output measured state signals indicative of an actual state of the battery back, including a respective actual voltage, current, and temperature of each of the multiple battery cells. The controller executes a method to generate, responsive to the measured state signals, an estimated state of the multiple battery cells using a respective open-circuit voltage and low-frequency transient voltage of each of the multiple battery cells. The controller estimates the low-frequency transient voltages using a porous electrode transient (PET) model as part of a model set, the PET model having open-circuit voltage elements representing uneven charge distribution within a cell electrode. State of charge (SOC) of the battery pack is estimated using the estimated voltages. An operating state of the electrical system is controlled in real-time responsive to the estimated SOC.

Abstract: In some implementations, a mobile device can be configured to monitor environmental, system and user events. The occurrence of one or more events can trigger adjustments to system settings. In some implementations, the mobile device can be configured to keep frequently invoked applications up to date based on a forecast of predicted invocations by the user. In some implementations, the mobile device can receive push notifications associated with applications that indicate that new content is available for the applications to download. The mobile device can launch the applications associated with the push notifications in the background and download the new content. In some implementations, before running an application or accessing a network interface, the mobile device can be configured to check energy and data budgets and environmental conditions of the mobile device to preserve a high quality user experience.

Abstract: An electrical system includes a battery, sensors, and a controller. The sensors output measured signals indicative of an actual state of the battery, including respective actual voltage, current, and temperature signals for each battery cell. The controller, in conducting a method, generates an estimated state of the battery, including a predicted voltage of the battery, doing so responsive to the signals using an open-circuit voltage and an output of an empirical model. An operating state of the electrical system is controlled using the estimated state. The empirical model includes low-pass/band-pass filters and a high-pass filter each with a different time-constant, the time-constants being spread over a time-constant range. Each low-pass/band-pass filter branches through a basis function(s) whose output(s) are multiplied by a respective resistance value to generate higher-frequency voltage transients. The controller sums the open-circuit voltage and voltage transients to derive the predicted voltage.

Abstract: The present application relates to a method for providing a corrected measuring signal indicating a high voltage on a high-voltage node (HV), including: injecting a periodic injection signal into a voltage divider coupled between the high-voltage node (HV) and a reference potential; obtaining a sensing signal at a sensing node (S) of the voltage divider, wherein the sensing signal depends on the periodic injection signal; from the sensing signal, separating a first sensing signal portion resulting from the high voltage and a second sensing signal portion resulting from the periodic injection signal; and depending on the second sensing signal portion, correcting the first sensing signal portion corresponding to the high-voltage signal in order to obtain the corrected measuring signal.

Abstract: An electronically controlled transformer, which is used for AC power supply, cutting off the sinusoidal waveform of voltage to change the RMS voltage. The electronically controlled transformer comprises a casing, socket holes and socket tabs for output and a circuit board. The circuit board is provided with an input terminal, a silicon controlled rectifier or field-effect transistor, an output terminal and a control module. The live wire and neutral wire of input terminal are connected by a rectifier or bridge rectifier. The positive output of rectifier or bridge rectifier is connected to a voltage regulation module. The voltage regulation module is connected to a control module. The control module comprises a control IC and a trigger and driving part. The trigger and driving part has an optical coupler. The switching pin of control IC is connected to the transmitting terminal of optical coupler.

Abstract: A current sensor includes first and second bus bars aligned and arranged in such a manner to be spaced from each other in a plate width direction, a third bus bar arranged in such a manner that a plate thickness direction thereof coincides with a plate thickness direction of the first and second bus bars and a length direction thereof is orthogonal to a length direction of the first and second bus bars, first and second magnetic detection elements arranged opposite the first and second bus bars respectively in the plate thickness direction, and a third magnetic detection element arranged opposite the third bus bar in the plate thickness direction. The first and second magnetic detection elements are gradient detection type magnetic detection elements and are arranged in such a manner that a detection axis direction thereof is perpendicular to the length direction of the first and second bus bars and is tilted with respect to the plate thickness direction of the first and second bus bars.

Abstract: Disclosed are methods, systems, and articles of manufacture for reducing interferences and disturbances in a multi-fabric electronic design. These techniques identify connectivity for an electronic design that includes design data in multiple design fabrics. One or more interference modules are executed to detect a loop in the electronic design with at least the connectivity. These techniques further execute the one or more interference reduction modules to determine at least one critical circuit component upon which the loop exerts a negative impact. One or more remedial actions are then triggered to reduce or eliminate the negative impact on the critical circuit component design.

Abstract: Method to determine a closing instant of an electromagnetic fuel injector; in a beginning instant of the injection, a positive voltage is applied to a coil of an electromagnetic actuator so as to cause an electric current to circulate through the coil, said electric current determining the opening of an injection valve; in an end instant of the injection, a negative voltage is applied to the coil of the electromagnetic actuator so as to cancel the electric current circulating through the coil; a first voltage time development is detected at least one end of the coil of the electromagnetic actuator after the cancellation of the electric current circulating through the coil; the voltage actuation time development is compared with a voltage comparison time development; and the closing instant of the electromagnetic injector is determined based on the comparison between the voltage actuation time development and the voltage comparison time development.

Abstract: In a power conversion system, if data communication between first to third control circuits is normal, then a ring-shaped first communication path is formed by the first to third control circuits and first communication lines of first to third communication cables, and a ring-shaped second communication path is formed by the first to third control circuits and second communication lines of the first to third communication cables. For example, if the data communication between the first and second control circuits is abnormal, a ring-shaped third communication path is formed by the first and second communication lines of the second and third communication cables and the first to third control circuits.

Abstract: A communications module for a household device includes a sensor device that is configured to be attached in the region of a device housing of the household device, a wireless data interface and a processor. The sensor device is configured to scan an emission signal, penetrating outwards through the device housing, of a component of the household device carrying out the operating process of the household device. The processor is configured to determine an operating state of the household device based on measurement values of the sensor device and to provide same by means of the data interface. In addition, the communications module can be used optionally in different types of household devices.

Abstract: A device includes a controller coupled to a touch sensor. The touch sensor includes a first array of capacitive nodes substantially aligned with a second array of capacitive nodes in a mechanical stack. The controller is configured, when in a self-capacitive mode of operation, to send a first drive signal to a plurality of the electrodes of the first array, send a shield signal to at least a portion of the electrodes of the second array at the same time as the first drive signal is sent to the plurality of electrodes of the first array, and sense touch inputs based on signals received from the plurality of electrodes of the first array while the first drive signal is being sent to the plurality of electrodes of the first array and the shield signal is being sent to the at least a portion of the electrodes of the second array.

Abstract: A system and method is disclosed for detecting a specific voltage phase, from a multiphase voltage source, and a specific outlet of an intelligent power strip, that is associated with a residual current flow. The method accomplishes this by using a system that employs a statistical time series analysis using a Pearson's correlation coefficient calculation to measure the linear dependence between the discretely sampled residual current waveform and each phase and outlet's discretely sampled current waveforms, in turn. A residual current as low as 1 mA can be accurately measured and its associated voltage phase source, as well as which outlet of an intelligent power strip it flows out of, can be reliably determined.