130 results about "Load bank" patented technology

The invention relates to the technical field of electric energy meter calibration, and provides an intelligent calibration method and system for an electric energy meter. The method comprises the steps that after calibration is triggered, a bus electric energy meter is switched to a bus-level electrical isolation scene through a switching relay; extracting a first group of bus-level metering values after injecting all-condition steady-state signals; comparing the theoretical values to calculate a first group of bus-level errors; judging whether to switch to a branch-level electrical isolation scene or not according to the error distribution characteristics; if switching is carried out, a multi-dimensional disturbance load combination is dynamically loaded on the K branch circuits through the program control load module, and a second group of bus level metering values are synchronously metered; and performing branch-level energy consumption error traceability calculation on the second group of values, and executing closed-loop calibration to solve the technical problems of low calibration precision and incapability of accurately reflecting error distribution caused by incapability of coping with a multi-dimensional disturbance load environment in real time in a traditional electric energy meter calibration process, so as to achieve the purposes of improving the accurate calibration capability of the electric energy meter in multiple scenes and improving the calibration accuracy of the electric energy meter in multiple scenes. And the equipment calibration time is shortened.

The present disclosure is directed to a system that employs fuel cell-based power generation for decentralized data centers that perform large, processing intensive tasks, such as training processes for large artificial intelligence models. The system utilizes various modules, such as energy storage systems, load banks, and other types of loads, to supplement power output by the fuel cells, as well as store any excess power generated by the fuel cell systems. As a result, swings in the power output by the fuel cell systems are minimized and the life of the fuel cell systems may be extended.

The invention relates to a starting peak shifting power-on control circuit and method for equipment with multiple power demands, and the power-on control circuit comprises a control module, a first voltage conversion module, a second voltage conversion module, a delay switch management module, and a power-on load module. The power output end of the first voltage conversion module is connected with the power input end of the first main load group, and the power output end of the second voltage conversion module is connected with the power input end of the priority delay load and the power input end of the MOS delay switch unit. The power output end of the MOS time-delay switch unit is connected with the power input end of the corresponding load to be delayed, and the third enable signal output end of the control module is connected with the enable signal input end of the MOS time-delay switch unit. By optimizing the load distribution when the power supply is started, the situation that the power supply system needs to select a power supply adapter and a power supply chip with too high specifications to meet the transient starting current requirement is avoided, the utilization efficiency of the power supply is improved, and the excessive configuration cost of the power supply system is reduced.

Provided is an electric vehicle charger performance inspection system enabling inspection of the performance of a charger for charging an electric vehicle with a DC power source, comprising: a simulator generating a control signal for simulating a failure; a failure simulation module comprising a failure simulation circuit unit for causing switches to operate by the control signal generated, and an insulation failure simulation circuit unit for causing the switches to operate by the control signal of the simulator; a load module comprising a resistor load bank including multiple resistors connected to the DC power source, and switches operated by a signal of the simulator to cause the multiple resistors to be connected to or blocked from a DC power line; and a path switching main module wherein inlets having plugs of one or more types of chargers inserted thereinto, and a connector connected to the load module are installed.

The invention discloses a detection device and a detection method for an anti-backlash gear, and relates to the technical field of detection devices. The detection device comprises a rack, a power input assembly, a load assembly and a detection assembly, the power input assembly is fixedly arranged on the rack, and the output end of the power input assembly is connected with an anti-backlash gear; the load assembly comprises a load gear and a load part in transmission connection with the load gear, the load assembly is movably arranged on the rack so that the load gear can be close to or away from the anti-backlash gear, and the load gear can be meshed with the anti-backlash gear; the detection assembly comprises a detection piece, and the detection piece can abut against the tooth surface of the load gear so as to measure the backlash between the load gear and the anti-backlash gear. The detection device can detect different anti-backlash gears, the applicability is improved, and the detection cost is reduced.

The utility model discloses a power supply switching circuit and an energy storage system. The power supply switching circuit comprises a first power supply input end, a second power supply input end, an output end, a control sub-circuit and a storage battery unit, the first power input end is electrically connected with the high-voltage direct-current power supply assembly; the second power input end is electrically connected with the high-voltage alternating-current power supply assembly; the output end is electrically connected with the load assembly; the control sub-circuit is electrically connected with the first power input end, the second power input end, the output end and the storage battery unit and used for controlling the high-voltage alternating-current power supply assembly to supply power to the load assembly, or the storage battery unit to supply power to the load assembly, or the high-voltage direct-current power supply assembly to supply power to the load assembly. According to the technical scheme provided by the utility model, the power supply switching circuit can reliably supply power to the high-voltage cabinet, so that the stable operation of the whole system is ensured.

The application discloses a kind of fault arc experimental platform and fault arc detection method, the experimental platform includes power supply, electrical fault simulator, circuit breaker, fault arc generation module and current acquisition analysis module, power supply is connected with electrical fault simulator, electrical fault simulator, circuit breaker and fault arc generation module are connected in series between, current acquisition analysis module is arranged between circuit breaker and fault arc generation module, fault arc generation module includes fault arc generation device and experimental load, fault arc generation device and experimental load are connected in series or in parallel connection.The experimental platform of fault arc of the application can be realized experimental load and the function of fault arc device series connection or parallel connection, and different types of load combination can be used for load replacement, ensure the reliability of fault arc detection, can obtain the current data of multiple fault arcs, provide sufficient and effective data support for fault arc detection method.

The invention relates to a control circuit, a circuit board and cleaning equipment. The control circuit comprises a power supply; the load assembly is connected with the power supply; the control module is connected with the power supply and the load assembly, the control module comprises a power supply management unit and a main control management unit, the power supply management unit monitors and controls the operation of the power supply, and the main control management unit controls the operation of the load assembly. The power management unit and the main control management unit are integrated in the control module, so that the power management function and the main control management function are integrated in the same module, the management of a single circuit module on a power supply and a load assembly is realized, the structure of a control circuit is integrated, the number of devices corresponding to the control circuit is reduced, and the cost is reduced. The installation steps of the control circuit are reduced, and the occupied space of the control circuit is reduced.

1. The name of the design product: intelligent liquid cooling load. 2. The use of the design product: for simulating the actual heat and power consumption of the server, detecting the liquid cooling effect and line power safety, and providing data testing for data center heating and power supply system. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

In one embodiment, a personal mobile device is disclosed. The personal mobile device includes a wheel, a support structure connected to the wheel, a load assembly, and a power generation device connected to the support structure. The power generation device is configured to be capable of being in friction engagement with the wheel, so that rotation of the wheel can drive the power generation device to generate electric energy. The personal mobile device is configured to power the load component based at least in part on the generated electrical energy.

The present application relates to a kind of wide-range bidirectional DCDC electronic load three-level control system and method, for solving the technical problems that the method exists in the test cost of traditional power supply test, test precision is low and debugging is difficult using multiple power supply load combination.The system includes input stage circuit, intermediate stage circuit unit, output stage circuit, the first control system of control input stage circuit, the second control system of control intermediate stage circuit unit and the third control system of control output stage circuit;The output end of third control system is connected to first control system.The input stage circuit of the present application adopts voltage outer loop control, current inner loop control mode, intermediate stage circuit adopts open loop control mode of fixed frequency and fixed duty cycle, output stage circuit adopts any mode outer loop control of constant current, constant voltage, constant resistance and constant power, inductance current loop inner loop control mode;Input stage circuit and output stage circuit synchronous control, intermediate stage circuit energy automatic distribution, realize bidirectional control.

The utility model discloses an alternating current load box, which comprises a binding post and a circuit breaker, the circuit breaker is connected with a starting loop and a load loop, the starting loop comprises a starting button and a relay coil, the load loop comprises a load, a capacitor and a normally open relay switch which are connected in series, and the relay coil is in inductive connection with the normally open relay switch. The alternating current load box has the following advantages and effects: the alternating current load box can be used for monitoring a switch-out area, so that remote monitoring of an electric power system is facilitated.

The utility model discloses a power supply module performance detection device, which comprises a test box comprising a box body and a box cover, the opening of the box body is upward, the box cover is arranged above the box body, the box cover is connected with the box body in a covering manner, the box body is provided with a main circuit, the box body is provided with a heat dissipation hole, the heat dissipation hole is provided with a heat dissipation fan, and the heat dissipation fan is connected with the main circuit. The cooling fan is connected with the main circuit; the power supply module is arranged in the box body, and the power supply module is connected with the main circuit; the load assembly is arranged in the box body; the change-over switch is arranged between the power supply module and the load assembly, and the change-over switch is used for controlling connection and disconnection of the power supply module and the load assembly; and the detector is connected with the load assembly. According to the power module performance detection device, the heat dissipation effect can be achieved, the detection accuracy is improved, the safety is guaranteed, operation is easy and convenient, and the working efficiency is improved.

The present application discloses a power supply system, method, device, medium, product and electronic device, relating to the technical field of power supply, including dividing the load groups in the server into multiple load groups according to the differences in peak power consumption time periods, and the auxiliary module adjusts its working state according to a preset instruction and switches between multiple power supply buses, which can optimize the energy flow and power supply strategy according to the power demand of the load group and the output capacity of the power supply; when two of the power supply buses are connected, they can effectively share the energy of each other's power supply modules, and these two power supplies are redundant with each other, only requiring an integer multiple of N + 1 power supply modules, reducing the number requirement for redundant power supply modules, saving space and improving the computing power density of the server. It solves the technical problem of excessive power supply modules in the server and large space occupation, and achieves the technical effect of optimizing the configuration of power supply modules, reducing the complexity of the server and the internal space occupation on the premise of ensuring power supply redundancy and reliability.

The invention discloses a railway locomotive emergency auxiliary power supply system, and belongs to the technical field of railway locomotives, the railway locomotive emergency auxiliary power supply system comprises a charger, the charger is electrically connected with a lithium battery pack, the lithium battery pack is electrically connected with a battery monitoring system, the battery monitoring system is electrically connected with a control system, and the lithium battery pack is electrically connected with a contactor circuit assembly through an inverter. The contactor circuit assembly is electrically connected with an air conditioner load assembly, the control system controls the contactor circuit assembly, the electricity utilization problem of a locomotive under the unpowered condition can be effectively solved, an air conditioner system, a warm air system, a traction motor cooling fan, a traction motor and the like can be controlled to be turned on and turned off, delayed shutdown is conducted, and the locomotive can be effectively protected. Waste heat of power components can be effectively dissipated, safety risks are reduced, and the service life of the motor is prolonged.

A method and controller are provided for operating an isolated or weakly connected electrical grid supplied by at least one fluctuating renewable energy source, such as wind or photovoltaic generation, in combination with a grid-forming controllable inverter coupled to a battery. The inverter operates as a master controller to regulate grid frequency and voltage, while the renewable sources operate as slaves. Battery charging and discharging are controlled according to deviations in grid frequency and charge level, with slopes defined for smooth power transitions. Additional selectively driven or non-driven alternators may be coupled in parallel with the inverter to stabilize frequency, provide inertia, reactive power, and short-circuit capacity, or support load changes. Control logic further manages integration of combustion engine-driven generators, resistive load banks, and external energy banks, while accounting for battery temperature and charge thresholds, thereby ensuring stable grid operation under fluctuating generation and demand conditions.

A power supply method includes determining that an electronic device is connected to an external power supply, configuring a first supply power of a first charging assembly, of the electronic device, that is configured to supply power to a first load assembly and a battery, and a second supply power of a second charging assembly, of the electronic device, that is configured to supply power to a second load assembly and the battery, in response to power being supplied to the first load assembly and the second load assembly, obtaining a first supply current of the first charging assembly to the battery and a second supply current of the second charging assembly to the battery, and in response to determining that the first supply current and the second supply current meet a condition, adjusting the first supply power and the second supply power.

The present invention relates to an air volume adaptive test load, comprising a load group, a fan, a terminal X1, and a terminal X2. The fan is aimed at the load group for blowing air. The load group includes a fan resistance unit RA and a tubular high-power resistor RB. The terminal X1 is connected in series with the fan resistance unit RA and the tubular high-power resistor RB and then connected to the terminal X2. The input end of the fan is connected to the two ends of the fan resistance unit RA. The total resistance of the fan resistance unit RA is such that, when the test load is operating at the maximum allowable voltage, a voltage U2 obtained by dividing the fan resistance unit RA is consistent with the rated voltage of the fan.

A vehicle having an automatic driving function has an alternator (2), a starter motor (5), a load A group (21) including one of two automatic driving electric loads that form a redundant system, a load B group (22) including the other automatic driving electric load, a lead-acid battery (6), and a lithium-ion battery (7) for backup. During normal operation, a circuit interrupting switch (13) and a LiB relay (10) are ON. When restarting an engine after an idling stop control, power is supplied to the starter motor (5) from the lead-acid battery (6) with the circuit interrupting switch (13) being in an OFF state. Preferential charge of the lead-acid battery (6) is performed with the circuit interrupting switch (13) being held OFF for a predetermined time period after the restart, and after that, the circuit interrupting switch (13) is turned ON, and the lithium-ion battery (7) is also charged.

Methods and systems for management of power distribution for a data processing system are disclosed. The method may include classifying an external device that may be attached to a port of the data processing system with respect to power consumption and power provisioning. The method may also include reconfiguring a switch network that connects the port to which the external device may be attached to load components (e.g., a battery, hardware resources, etc.) of the data processing system so that a power delivery path may be established. Power delivery may be performed to distribute power to the data processing system and / or to the external device using the power delivery path.

The invention relates to a vehicle (2) with an on-board energy supply system (1, 1-HV, 1-NV), wherein the on-board energy supply system (1-NV) has at least one feedback component (5), by means of which electrical energy can be fed back into the on-board energy supply system (1-NV), and at least one load-carrying component (6 - 9), which can be selectively set into an active state with normal energy consumption or into an inactive state with reduced energy consumption, and wherein the vehicle (2) is designed to switch at least one load-carrying component (6 - 7) from its inactive state to its active state upon detection of feedback.The invention also relates to a method for absorbing electrical energy fed back into an on-board power supply system (1, 1-HV, 1-NV) of a vehicle (2), in which, upon detection of a feed-back, at least one load-carrying component (6-9) of the on-board power supply system (1-NV) is switched from an inactive state with reduced energy consumption to an active state with normal energy consumption. The invention is particularly advantageously applicable to electric vehicles.

The utility model relates to the technical field of inductor testing, and discloses an induction device testing device, which comprises a blocking assembly, an induction device, a load assembly, a regulation and control module and a power supply module. The sensing device detects the blocking assembly to output a pulse signal; the load assembly is connected with the output end of the sensing device, and the load assembly receives the pulse signal and outputs a detection signal; the output end of the regulation and control module is connected with the blocking assembly and the sensing device, the input end of the regulation and control module is connected with the load assembly, and the regulation and control module drives the blocking assembly to move and drives the sensing device to operate and receives a detection signal; the power supply end of the power module is connected with the input end of the regulation and control module, and the power module supplies power to the regulation and control module and the sensing device. By arranging the load assembly, simulating the pipeline load, simulating the actual use environment and testing by using the detection signal, the test result is more authentic, the test accuracy is improved, and the reliability of the induction faucet applied by the induction device is improved.

The invention discloses a switch inductor series connection type quasi-Z-source direct current boost converter, belongs to the field of power electronic converters, and aims to solve the problem that a traditional Z source is not suitable for a high boost gain conversion scene. By utilizing the energy storage and release characteristics of the inductor and the capacitor, high direct-current voltage can still be output under the condition that the input voltage is low, and the requirements of low-voltage input and high-voltage output in a renewable energy power generation system are met. The switch inductor series connection type quasi-Z-source direct current boost converter comprises a direct current voltage source, four same inductor units, seven diode units, two capacitor units and a direct current converter output unit, wherein a switch inductor is composed of L1, L2, D1, D3, L3, L4, D5 and D7. The DC converter output unit is composed of an output diode, an output capacitor and a load. The switch inductor series connection type quasi Z source can provide high voltage gain.

A vehicle having an automatic driving function has an alternator (2), a starter motor (5), a load A group (21) including one of two automatic driving electric loads that form a redundant system, a load B group (22) including the other automatic driving electric load, a lead-acid battery (6), and a lithium-ion battery (7) for backup. During normal operation, a circuit interrupting switch (13) and a LiB relay (10) are ON, and power is supplied to the load A group (21) and the load B group (22) by power generation of the alternator (2). During execution of an idling stop control, the circuit interrupting switch (13) is turned OFF, and when restarting an engine, power is supplied to the starter motor (5) from the lead-acid battery (6). The lithium-ion battery (7) is not affected when restarting the engine.

Provided is a customer‑sited hybrid generator system that coordinates a bidirectional inverter, an energy storage battery, an engine‑driven generator, an optional renewable source, a controllable load bank, and an isolation switch under a supervisory controller, to supply facility loads and interact with a power grid. The controller enables multiple modes, including surge support during normal operation, under‑frequency export from the battery with generator takeover, over‑frequency import to charge the battery, and distributed curtailment using a resistive load thermally coupled to a liquid cooling loop. Electrically driven pumps and fans, a radiator, and a three‑way valve route coolant among power electronics, engine, and curtailment loops. During a grid outage, the system may connect the generator directly to a facility bus, while isolating the inverter so the battery‑backed inverter can provide parallel hybrid surge. The system interfaces with utility or VPP dispatch and supports either 50 Hz or 60 Hz interconnection

The utility model discloses a grid-connected switch driving coil wiring circuit of a wind power converter. The grid-connected switch driving coil wiring circuit comprises a UPS, a group I load arranged between the input end of the UPS and a 380V power supply, and a group III load arranged at the output end of the UPS. The group I load comprises a grid-connected switch energy storage coil, a closing coil and an opening coil; the group III load comprises a grid-connected switch controller, an under-voltage trip coil and a converter control system; the control end of the converter control system is connected with three groups of relays; and a normally open contact of the relay is connected between any phase of 380V and the input end of the coil. According to the utility model, the capacity of the uninterruptible power supply used by the wind power converter is reduced, the cost is reduced, the backup time of the UPS is prolonged, the important load of the converter runs for a longer time when 380V power failure occurs, and the stability of the system during the power failure is improved; and the impact of the UPS output end is smaller, the fluctuation is smaller when the converter system is started, and the reliability of the converter control system is improved.

The utility model discloses a ship power supply system and a ship, and belongs to the technical field of circuit systems.The power supply system comprises a first power distribution assembly, a second power distribution assembly and a load assembly; the first power distribution assembly comprises a direct current busbar, the second power distribution assembly comprises a first inverter circuit and a power distribution part, the first inverter circuit is connected with the direct current busbar, and the power distribution part is connected with the first inverter circuit; the load assembly comprises a second inverter circuit and a load part, the second inverter circuit is connected with the direct current busbar, and the load part is connected with the second inverter circuit. According to the invention, the second power distribution assembly and the load assembly are connected to the first power distribution assembly, so that the mutual influence between the second power distribution assembly and the load assembly is reduced, the generation of heavy harmonics of the power supply system is reduced, and the use effect of the power supply system is improved.

A vehicle having an automatic driving function is provided with: an alternator (2); a starting motor (5); a load group A (21) including one of two automatic driving electrical loads constituting the redundant system and a load group B (22) including the other; a lead acid battery (6); and a standby lithium ion battery (7). If the temperature of the lithium ion battery (7) is greater than or equal to the idle stop prohibition temperature (T1), the idle stop control is prohibited. The idle stop prohibition temperature (T1) is lower than an automatic driving prohibition temperature (T2) at which automatic driving is prohibited.

The invention provides an oven and an electric appliance, relates to the technical field of energy recycling of household appliances, and aims to recycle heat energy dissipated when the electric appliance works. A heat energy recovery device in the oven is arranged on the outer side of the cooking cavity and comprises an electric energy output end. The heat energy recovery device collects heat energy generated by the cooking cavity, converts the heat energy into electric energy and outputs a first power supply signal through the electric energy output end. The input end of a first power supply circuit in the power supply switching circuit is connected with a power supply, and the input end of a second power supply circuit is connected with the electric energy output end of the heat energy recovery device. The load assembly is electrically connected with the output end of the first power supply circuit and is also electrically connected with the output end of the second power supply circuit. The control system is electrically connected with the power supply switching circuit, receives a first power supply signal output by the heat energy recovery device and obtains a second power supply signal. And when the voltage of the second power supply signal is greater than the first preset value, switching the power supply circuit of the load assembly from the first power supply circuit to the second power supply circuit.

The utility model provides a non-programming electronic building block, which relates to the technical field of electronic building blocks and comprises a supporting base and a DIY building block mechanism, the DIY building block mechanism is arranged on the upper side of the supporting base, and various electronic elements on the upper side of the supporting base are modularized and are in flat key connection with one another through connecting components. In the building block splicing process, self-splicing of different modular elements can be achieved through self exploring of children, the splicing interestingness of the children is enhanced, the insulation assembly can obstruct the grounded current of the supporting base, the situation that the current causes certain damage to the electronic building blocks on the upper side is prevented, and the safety of the children is improved. Current of the power source assembly can be spread through the connecting supports on the corresponding connecting supporting feet through the connecting assembly, the resistor, the load chip and the load device are connected through flat keys on the inner side of the insulating base, the output and input conditions of the current can be achieved through control of the control assembly, and therefore real-time observation and control over the load assembly are achieved.