605 results about "Supply current" patented technology

Air conditioning device (1) for motorhomes, comprising: - at least one first heat exchanger for exchanging heat with the air circulating through it; - a cooling circuit (8) for a cooling fluid, with a path passing through the first heat exchanger; - a compressor (7) which includes an electric motor, for circulating the cooling fluid in the cooling circuit (8); - a power supply unit that can be connected to an external power supply to receive an electrical input current or electrical input power and to generate a variable supply voltage to drive the electric motor with an electrical supply current, - a controller (11) connected to the power supply unit that is suitable for receiving input data representative of a reference value of the electrical input current or electrical input power and that is programmed to adjust the power supply unit to generate the supply voltage with a reference amplitude and / or frequency such that the electrical input current or electrical input power is below the reference value; - a positioning device designed to determine the position of the air conditioning device (1); and - a memory containing a plurality of reference values ​​corresponding to a plurality of locations, wherein the controller (11) is capable of receiving a location signal from the positioning device and of setting as input data one of the reference values ​​present in the memory depending on the location signal.

The invention provides an optimized winding method and system for a high-frequency transformer winding. A comprehensive parameter database based on current density distribution data of a high-frequency switching power supply is established, the axial temperature of a winding layer is collected in real time in combination with a self-calibration multi-axis winding device, and tension and interlayer gap compensation parameters are generated through temperature gradient feedback. The tension parameter drives the machine to adjust the winding tightness, and the gap parameter optimizes the heat dissipation channel. And synchronously fusing the current distortion data of the LLC resonant topology and an electromagnetic field simulation result, and generating a resonant frequency adjustment signal to suppress abnormal high-frequency current distribution. And dynamic matching of winding tightness, current distribution and heat dissipation requirements is realized through cooperative control. According to the system, electromagnetic, mechanical and thermal field multi-dimensional linkage is adopted, the skin effect and hot spot concentration are reduced, the temperature rise gradient is balanced, and the high-frequency working condition stability is enhanced. According to the technical scheme, through electromagnetic, mechanical and thermal field cooperative regulation and control, the temperature rise peak value of the high-frequency winding is greatly reduced, and the efficiency is greatly improved.

Disclosed is a test device to test the operation of an MMC by fabricating only one or several SMs constituting the MMC testing under real-time operating conditions. The test device for a modular multi-level converter (MMC) includes a simulation model of an MMC having at least one arm to which sub modules (SMs) are serially connected, at least one test target SM among the serially connected SMs being replaced with a dependent voltage source; an arm current simulation circuit including an equivalent SM that implements the test target SM as actual physical hardware and an inverter that supplies current to the equivalent SM; and a control unit configured to control the arm current simulation circuit to correspond to an operation of the simulation model and set a voltage corresponding to a charge / discharge voltage of the equivalent SM of the arm current simulation circuit to the dependent voltage source.

A voltage generator including an LDO (low dropout) regulator that supplies a current to an internal voltage node of a sense amplification circuit as feedback control based on a voltage level of the internal voltage node; and a power switch circuit including a plurality of power switches each having one end connected to an external voltage and an opposite end connected to the internal voltage node, and that supplies the current to the internal voltage node as feed-forward control based on a known number of sense amplifiers to be activated. The voltage generator may efficiently supply current according to an operation mode of the sense amplification circuit.

The invention provides a power supply circuit and a dual-plane redundant power supply system, which can be applied to the technical field of power supply current sharing. The current sharing control circuit comprises an output voltage generation module used for converting an output current provided by a power supply circuit to a load into an output voltage; the current-sharing control module is used for generating a current-sharing control voltage for adjusting the reference voltage of the far-end sampling point according to a comparison result obtained by comparing the current sensing voltage with the current-sharing voltage of the current-sharing bus; the feedback voltage generation module is used for generating a feedback voltage according to the far-end feedback voltage, the near-end feedback voltage and the resonant voltage; and the voltage regulation module is used for regulating the reference voltage according to the current sharing control voltage, comparing the feedback voltage with the regulated reference voltage to obtain error voltage, and regulating the output voltage of the power supply circuit according to the error voltage.

The invention belongs to the field of power source detection, and provides a computing power server power source current sharing detection device and method.The computing power server power source current sharing detection device comprises a power source detector, a guiding piece, a centering assembly, a straightening mechanism and a driving mechanism; the acquisition module comprises a Hall current sensor which is connected with an acquisition port of the power supply detector through a plurality of groups of wires; by arranging the centering assembly and the straightening mechanism, the power supply wire can be centered and fixed from the two sides of the Hall current sensor, and then the fixed power supply wire is straightened, so that the power supply wire in the through hole is in a relatively straightened state, the problem of non-uniform magnetic field distribution caused by improper position of the wire is effectively avoided, the measurement error is reduced, and the measurement accuracy is improved. Meanwhile, the straightened wire also reduces the possibility that the sensor is interfered by an external magnetic field, and further improves the accuracy and stability of current collection.

To improve power efficiency of a synchronous motor in a wide speed range from a low speed to a high speed.SOLUTION: In a pole-number switching method, the current value of AC current supplied to an armature is reduced at low speed by increasing the number of poles and increasing the torque multiplier of the electric motor, thereby reducing copper loss, and loss at high-speed rotation (mainly iron loss) is reduced at high speed by decreasing the number of poles and lowering the voltage and frequency of the AC current supplied to the armature. Furthermore, a further power-efficiency improvement effect is provided by connecting the circuit such that, during driving of the electric motor, inverter power-supply current of an armature winding becomes a power supply for a field winding, and such that, during regenerative braking, current generated from the armature winding is regenerated to a battery efficiently.SELECTED DRAWING: Figure 2

The invention discloses an intelligent communication power supply current fault classification method. The method comprises the following steps: acquiring original current data of a communication power supply system; preprocessing the original current data; extracting multi-dimensional features from the preprocessed current data; dimensionality reduction and optimization are carried out on the extracted multi-dimensional features by using a pre-trained enhanced Gap-DBN auto-encoder; a hierarchical XGBoost classification model is used to carry out current fault classification on the processed features, and a three-level classification architecture is used to refine classification results step by step. The invention further provides a corresponding system. By implementing the invention, the response timeliness of the current fault in the communication power supply system can be improved, and the accuracy of fault classification is improved.

A charging system includes a first device; a second device; and a power adjustment device including a DC-to-DC conversion unit; and a micro-control unit for receiving a charging instruction, a first power information of the first device and a second power information of the second device and performing the following steps: controlling the DC-to-DC conversion unit to convert a first supply current received by the first device into a first charging current according to the first power information and the second power information when the charging instruction instructs the first device to charge the second device; and controlling the DC-to-DC conversion unit to convert a second supply current received by the second device into a second charging current according to the first power information and the second power information when the charging instruction instructs the second device to charge the first device.

A measurement circuit including a power supply, a load output terminal connected to the power supply and connected to a system ground via a load, an amplifier comprising power terminals connected to the power supply, and an output terminal connected to the system ground via a measurement resistor, the amplifier is configured to supply current from the power supply to the load via the measurement resistor and the system ground producing a voltage across the measurement resistor that corresponds to the supply current through the load.

An induction heating apparatus according to one embodiment includes a working coil disposed in a position corresponding to a heating zone, an inverter circuit that includes a plurality of switching elements and supplies current to the working coil, a driving circuit that supplies a switching signal to each of the switching elements included in the inverter circuit, a current sensor that measures a resonance current value and a magnitude of resonance current flowing in the working coil, and a controller that supplies a control signal for adjusting a duty ratio and a frequency of the switching signal to the driving circuit, to drive the working coil.

This invention discloses a method for calculating electromagnetic anomalies in fracturing fractures of a charging conductor, comprising the following steps: S1, establishing a fracture model by monitoring the well location, burial depth, fracture size, power supply current, and frequency settings; S2, calculating the formation equivalent resistivity using multi-layer profile parameters; S3, dividing the charging conductor into Nd electric dipole sources and obtaining the vector potential and scalar potential Φ of each electric dipole source at the surface; S4, obtaining the E and H values ​​of the electric dipole sources at the surface according to the electric field and magnetic field calculation formulas, determining the reference point N, and obtaining the electric field E in the MN direction. MN and magnetic field H MN S5. Based on the principle of vector superposition, the electromagnetic fields of all the segmented electric dipole sources are superimposed to obtain the electromagnetic fields before and after fracturing, and the electric field anomaly E caused by the fracturing fracture is obtained by differential calculation. a and magnetic field anomaly H a The present invention aims to construct a model of a charging conductor crack to obtain electromagnetic anomalies generated by fracturing cracks, providing a theoretical basis for electromagnetic monitoring and crack identification.

Injection molding machine (10), comprising: a mold closing / clamping motor (160) that moves a mold closing / clamping unit (100) to perform mold closing / clamping of a mold unit (800); a drive unit (721) that supplies power to the form-closing / clamping motor (160); a changeover switch (730) provided in a wire (722) connecting the mold closing / clamping motor (160) and the drive unit (721), which is capable of switching between supplying and stopping the current from the drive unit (721) to the mold closing / clamping motor (160), and which is capable of switching between not activating a brake of the mold closing / clamping motor (160) and activating the brake; and a digital circuit (711) connected to the changeover switch (730) and controlling the changeover switch (730), wherein the digital circuit (711) controls the changeover switch (730) based on the detection of a trigger signal to stop the mold closing / clamping motor (160) in order to perform the feed stop and activation of the brake, the digital circuit (711) controls the feed stop of the switch (730) and the activation of the brake after waiting for a waiting period that is set from the time at which the trigger signal is detected, and The waiting time is set to be equal to or longer than the time in which pressure relief is completed from a state in which the forming unit (800) is pressed by the forming closing / clamping unit (100).

The disclosure relates to a method for operating a drive train for a working machine, in which a working drive of the working machine is driven by a first electric motor via a first gear arrangement, a travel drive of the working machine is driven by a second electric motor via a second gear arrangement and, in a shifting procedure of the second gear arrangement, the rotational speed of the second electric motor is synchronised and the temperature of said second electric motor is recorded. In the disclosed method, the rotational speed is synchronised by supplying current to the second electric motor, and in the event of a threshold temperature being exceeded, at least one measure is carried out to relieve the thermal load of the second electric motor. The disclosure further relates to a corresponding drive train and to a working machine.

Steering control device (200) comprising: a control current calculation unit (210) that calculates an initial control current for a steering wheel based on acquired steering information; a resistance calculation unit (220) that calculates an internal resistance based on a detected internal temperature; a supply current estimation unit (230) that estimates a supply current of a battery (100) based on the internal resistance, the first control current and an input supply voltage of the battery (100); and a control current application unit (240) that compares the supply current with a preset reference current, changes the first control current into a second control current by reducing it by a decrement if the supply current is greater than the reference current, and applies the second control current to a steering motor (500); wherein the second control current is a current reduced by a predetermined value compared to the first control current.

This suppresses power waste caused by discharging residual charge. [Solution] The emitter 10 of the distance measuring device 1 for measuring the distance to an object comprises a transmitting unit that outputs a transmission wave to irradiate the object, a capacitor 120 that is charged by a power supply and supplies current to the transmitting unit, a switching element 150 that controls the current flowing to the transmitting unit, a drive circuit that controls the switching element, and a control unit 180 that, after irradiating with a transmission wave, sends a control signal to the drive circuit to continuously irradiate with a transmission wave of an irradiable distance according to the residual charge of the capacitor 120.

The application relates to a high-precision addressable ring oscillator test chip, method, device and medium, which comprises an addressing module, an output module and a plurality of ring oscillator test modules; the ring oscillator test module comprises a signal transmission module, a multifunctional test module and a plurality of ring oscillator test structures; the addressing module is used for selecting a ring oscillator test structure from the ring oscillator test structures of the plurality of ring oscillator test modules to perform a communication test; the multifunctional test module can switch the voltage compensation mode or the small-current test mode of the ring oscillator test structure based on a received control signal; when the characteristic parameters of the ring oscillator are measured, the voltage compensation mode can utilize voltage drop compensation to reduce the influence of the resistance voltage drop introduced in the test path, effectively improving the measurement precision, and the small-current test mode can effectively measure the static power supply current of the ring oscillator.

The invention relates to the technical field of dynamic control, and provides an intelligent cathode and anode power supply current adjusting method and device based on dynamic matrix control. Obtaining an initial parameter set of the power supply system, quantifying a dynamic coupling relationship between each variable and the current, constructing a multivariable coupling model, and outputting a predicted current through the multivariable coupling model; modeling in the prediction time domain and the control time domain to generate a dynamic matrix control law; generating a duty ratio adjustment parameter based on a parameter error between the obtained real-time parameter and a prediction parameter output by the multivariable coupling model; and encoding based on the duty ratio adjustment parameter and the dynamic matrix control law to generate a pulse width modulation signal, and controlling the output of the current through the pulse width modulation signal. By quantifying the dynamic coupling relationship between the target variable and the current with the coupling relationship, the influence mechanism of each factor in the power supply system on the current can be clearly grasped, the intelligent and accurate adjustment of the current is realized, and the performance and the stability of the power supply system are improved.

The invention relates to the technical field of solar cell recycling and processing, in particular to an electric heating device for dismantling a module frame, which comprises a frame dismantling platform for supporting and limiting a photovoltaic panel, and further comprises at least one pair of oppositely arranged electrodes for clamping the upper side and the lower side of the frame of the photovoltaic panel; the driving unit is used for driving the electrode to execute a clamping action; and the heating control unit is used for supplying current to the clamped frame through an electrode so as to heat the clamped frame. The electrodes which are symmetrically arranged up and down are matched with the driving unit to clamp the whole frame, so that current is led in from the upper surface and the lower surface of the frame, the conductive contact area is increased, the current path is remarkably shortened, and compared with a traditional electric heating scheme, the current is uniformly distributed in the section of the frame, and the heating efficiency is improved. And the resistance heat effect can be synchronously and uniformly generated on the whole frame, so that the phenomena of local overheating and glue carbonization combustion caused by overhigh current density of an electrode contact point are avoided.

The embodiment of the invention provides a photovoltaic charging control method and device, a storage medium and a charging system. The method is used for controlling a charging system, and the charging system comprises a PV panel, a PV boost converter and a battery system. The method comprises the steps that before a charging system is started, a first switching tube and a third switching tube are closed, and if it is judged that the short-circuit current of a PV panel is larger than a set current threshold value, the PV panel is controlled to be connected to and activate a battery system; when the charging system enters the working stage, acquiring the voltage of the PV panel and the power supply current of the battery system; power supply current and PV panel voltage are calculated through an improved MPPT algorithm, voltage single-loop given voltage is generated, and the improved MPPT algorithm starts to search the maximum power point when the PV panel voltage is zero; calculating the given voltage of the voltage single loop and the voltage of the PV panel based on a proportional-integral algorithm, and generating switch-on time of a switch tube; and the second switch tube and the third switch tube are controlled according to the switch tube conduction time, so that the hardware cost and the control cost of the charging system are reduced.

light-emitting diode chip (1) with - a semiconductor layer sequence (2) based on InGaAlAsP and configured to generate visible light or near-infrared radiation, - a current expansion layer (3) located directly adjacent to the semiconductor layer sequence (2) and based on AlGaAs, - an encapsulation layer (4) which is applied directly to the current expansion layer (3) and / or to the semiconductor layer sequence (2) in certain locations and which has an average thickness between 10 nm and 200 nm inclusive and a defect density of at most 10 / mm 2 exhibits - at least a cover layer (5) which is applied directly to the encapsulation layer (4) at least in some places, - at least a non-metallic reflective layer (6) which is located in places on one side of the current expansion layer (3) facing away from the semiconductor layer sequence (2) and which is covered in places by the encapsulation layer (4), and - at least one mirror layer (71) and / or adhesion-promoting layer (72) which is located locally on one side of the reflection layer (6) facing away from the current expansion layer (3) and is designed to supply current to an electrical contact surface (8), wherein - the encapsulation layer (4) completely and directly covers the outer facets (25) of the current expansion layer (3), - the reflective layer (6) around the current expansion layer (3), viewed from above, forms a circumferential border (36) and in this border the reflective layer (6) directly borders the semiconductor layer sequence (2), and - the edge (36) has a width of at least 3 µm and at most 15 µm.

The application discloses a parallel power supply current estimation method based on an instantaneous power integration method and relates to the technical field of power electronics and power supply control. The method collects electrical signals on the AC side of a three-phase PWM rectifier in front of each power supply module, calculates the instantaneous power input of the module, and integrates the input power and the voltage on the load side with the switching period of a DC-DC converter in back as an integration window to obtain the single-period energy and voltage integration value, so as to weaken the influence of the energy of energy storage elements such as inductors and capacitors in the circuit on the estimation result, thereby obtaining the preliminary estimation value of the output current of the module. Meanwhile, an independent equivalent loss resistor is introduced for each power supply module to describe the loss in the power supply, and the equivalent loss resistor is estimated in a longer time scale through an offline polling mode, so as to obtain the output current estimation result of each parallel power supply module.

Embodiments herein relate to a stacked semiconductor structure including a first voltage regulator (VR) located outside a package for supplying current to a computing die in the package. When the required current exceeds a threshold, the additional current source is activated. The additional current source may include a second VR also located outside the package for supplying current to an integrated voltage regulator (IVR) in the package. The IVR performs voltage down-conversion and current multiplication to output a portion in which the required current is above a threshold to which the output of the first VR is limited.

The embodiment of the utility model provides circuit board detection equipment. The circuit board detection equipment comprises a plurality of detection units, a voltage stabilizing module, a current display module and two detection contacts are arranged in each detection unit; the two detection contacts are used for being coupled with a detected circuit board, the positive electrode output end and the negative electrode output end of the voltage stabilizing module are respectively coupled with the two detection contacts and are used for supplying power to the detected circuit board, a detection loop is formed by the voltage stabilizing module and the detected circuit board, and the current display module is connected in the detection loop in series and is used for detecting and displaying power supply current of the detected circuit board. And more stable power supply voltage is provided for the detected circuit board through the voltage stabilizing module, so that the condition that the detected circuit board is damaged due to factors such as instantaneous high voltage or large-amplitude voltage fluctuation is avoided, and the detection accuracy is improved. In addition, a plurality of detection units correspond to a plurality of detection channels, so that a plurality of detected circuit boards can be detected at the same time, and the detection efficiency is improved; and voltage stabilizing modules with the same or different output voltages can be configured for the detection units according to detection requirements.

The present application relates to the technical field of automobile control, and particularly relates to a magnet exciting coil power supply control method, a control circuit and a device for a magnet exciting generator. The control method comprises the following steps: S1: after the system is powered on, whether the engine starts to start or the magnet exciting generator starts to rotate is detected in real time; S2: after it is detected that the engine starts to normally start or the magnet exciting generator starts to normally rotate, a set current is output to the magnet exciting coil by controlling the magnet exciting power supply circuit; and S3: after the engine starts, the feedback voltage of the magnet exciting coil is detected in real time, and when the feedback voltage is not less than a set voltage, the power supply current is turned off, and the magnet exciting generator enters a self-power supply stage of the magnet exciting coil. In the method, the magnet exciting coil is powered after it is detected that the engine starts to start, at this time, the magnet exciting generator starts to work, the power generation voltage can be established immediately, the self-power supply is performed, the heating and burning of the current limiting resistor of the power supply circuit are avoided, and the battery power loss caused by the power supply circuit power supply to the battery power when the engine is not started is avoided.

There is disclosed an aircraft turbine engine comprising a restart motor (ME2) configured to drive rotation of a high-voltage shaft (22) using an alternating restart current (CA2) delivered by a power supply system (3) comprising: a generator (ME1) for generating an alternating supply current (CA1) by extracting torque from a low-voltage shaft, an electrical rectifier (31) connected to the generator (ME1), an electrical converter (32) connected to the restart motor (ME2), an electrical switching device (33) configured to prevent current from flowing between the electrical rectifier (31) and the electrical converter (32) in an open state and to allow it to flow in a closed state (F1), control means (4) configured to command the closed state (F1) and to activate, during the in-flight restart, the means (D) for modulating the electrical power of the AC restart current (CA2).

This application discloses a method, apparatus, storage medium, and product for controlling the current of a charge-and-discharge power supply. The method includes acquiring a target adjustment command, which includes a target current increment. This target current increment is the difference between a first preset current and a second preset current. The first preset current is the target current of the previous adjustment cycle, and the second preset current is the target current of the current adjustment cycle. The method also includes acquiring a voltage increment based on multiple target parameters and the target current increment. These multiple target parameters include the battery electromotive force, battery internal resistance, and line impedance of the charge-and-discharge power supply when it was in a stable state in the previous adjustment cycle. Finally, the method includes acquiring an adjustment amount based on the voltage increment and adjusting the output current of the charge-and-discharge power supply based on the adjustment amount. This method can improve the response speed while ensuring the stability of the output current of the charge-and-discharge power supply.

The control circuit according to the present disclosure includes a passive circuit (10) and an active circuit (20). The passive circuit (10) is configured to: supply current to a Single Photon Avalanche Diode (SPAD) element (6a) from a supply path (Rp); and output a first pulse signal (P1) according to a signal Generated in the SPAD element (6a). The active circuit (20) is configured to: supply current to the SPAD element (6a) selectively from among a plurality of supply paths; and output a second pulse signal (P2) according to a signal generated in the SPAD element (6a).

An anti-fuse circuit includes a current generator and an anti-fuse sensing unit. The current generator has at least one replica electronic element. The anti-fuse sensing unit is electrically connected to the current generator, and the anti-fuse sensing unit has at least one electronic element. The electronic element specification of the at least one electronic element of the anti-fuse sensing unit is the same as the electronic element specification of the at least one replica electronic element of the current generator. The current generator supplies current to the anti-fuse sensing unit to sense the anti-fuse. By means of the technical solution of the present application, the anti-fuse circuit can improve the accuracy of sensing the anti-fuse.

The invention belongs to the field of vehicle switch control, and provides a self-learning protection electromagnetic main switch for a vehicle and a control method thereof, and the self-learning protection electromagnetic main switch comprises an electromagnetic main switch body and a control circuit connected with the electromagnetic main switch body. The control circuit comprises an input detection module and a voltage comparison module. The input detection module is connected with a current sensor of the electromagnetic main switch and the seat pressure switch. And the voltage comparison module is respectively connected with a power supply and an output driver of the control circuit so as to monitor a comparison result between the input power supply voltage and the standard under-voltage value and between the output power supply voltage and the standard under-voltage value. When the vehicle runs or is parked for a long time, the actual working states of the vehicle and a driver are judged by collecting power supply current, a control switch, an ignition switch, a starting signal, an engine revolution signal, a whole vehicle voltage signal, a driver off-seat signal and the like; the electromagnetic switch coil is controlled to keep a pull-in state, and power supply of a vehicle main circuit is guaranteed.