49 results about "Load bank" patented technology

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.

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.

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.

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 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 invention relates to an on-board electrical system (1) for a vehicle with two on-board electrical system channels (6, 12), wherein each of the on-board electrical system channels (6, 12) is coupled or can be coupled to a power source by means of a DC-DC converter (5, 11), and in each on-board electrical system channel (6, 12) exclusively a safety load group (8) is directly or via at least one electrical safety element (9.1 to 9.n, 13.1 to 13.n) is electrically coupled or can be coupled to the associated DC-DC converter (5, 11). According to the invention, a comfort load group (14) is electrically coupled or can be coupled to both on-board electrical system channels (6, 12) by means of a supply circuit (15). The supply circuit (15) has a first switching arrangement with a first switch (15.1) for electrically coupling the comfort consumer group (14) with a first on-board network channel (6) of the on-board network channels (6, 12) and a second switching arrangement with a second switch (15.3) for the electrical coupling of the comfort consumer group (14) with a second on-board network channel (12) of the on-board network channels (6, 12). Furthermore, a monitoring device (10) for monitoring electrical parameters in the on-board network channels (6, 12) and a control unit (17) coupled to the monitoring device (10) via data transmission are provided, which is configured at least to control the first switch (15.1) and the second switch (15.3) depending on the electrical parameters of the on-board network channels (6, 12).

A generator set system includes: a generator set including an engine and a generator operatively coupled with the engine; a radiator operatively coupled with the engine; and a load bank system including: a load bank mounted to the radiator and including a resistor array; and a load bank control panel operatively coupled with and spaced apart from the load bank.

The embodiment of the invention provides a power distribution control method, system and equipment of a carrier rocket, the method, system and equipment are applied to a power distribution control system arranged on the carrier rocket, the power distribution control system controls power distribution of a ground power supply and a rocket battery to the carrier rocket, and the method comprises the steps of receiving a ground test starting instruction; controlling a ground power supply to supply power to a first preset load group of the carrier rocket according to the ground test starting instruction; receiving a power conversion instruction; stopping power supply of the ground power supply according to the power conversion instruction, and controlling the rocket battery to supply power to a second preset load group of the carrier rocket; receiving flight data of the carrier rocket and state data of a battery on the rocket; and according to the flight data of the carrier rocket and the state data of the on-rocket battery, controlling the on-rocket battery to distribute power to each load in a second preset load group of the carrier rocket. According to the embodiment of the invention, the power supply strategy of each load in the second preset load group can be dynamically adjusted according to the actual flight stage and the power supply health condition.

A liquid-cooled load bank is provided. The liquid-cooled load bank can include a base; a heating reservoir coupled to the base, where the heating reservoir includes a reservoir inlet and a reservoir outlet; and at least one heating element adapted for heating liquid within the heating reservoir, where the reservoir inlet comprises an inlet opening in a bottom of the heating reservoir. A method is also provided where the liquid-cooled load bank is used to calibrate and test a cooling system.

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 present disclosure relates to the technical field of electronic power, and in particular to a server, which includes a data processing apparatus and a first heatsink, the data processing apparatus includes a load group and a power supply module group, the load group includes at least two loads, and the power supply module group supplies power to the loads; the first heatsink is thermally connected to the power supply module group, at least part of a projection of the first heatsink in a first plane is located outside a load region, the first plane is parallel to an upper surface of the load, the load region is a minimum outer contour projection region of the load group that can cover all loads in the first plane.

A liquid-cooled load bank is provided. The liquid-cooled load bank can include a base; a heating reservoir coupled to the base, where the heating reservoir includes a reservoir inlet and a reservoir outlet; and at least one heating element adapted for heating liquid within the heating reservoir, where the reservoir inlet comprises an inlet opening in a bottom of the heating reservoir. A method is also provided where the liquid-cooled load bank is used to calibrate and test a cooling system.

The present application relates to the technical field of power test equipment, and discloses a diesel generator set testing device and a control method, wherein the diesel generator set testing device is composed of a three-winding dry-type transformer containing taps, a double-winding transformer, a single bus suitable for multiple voltage grades and its power distribution device, and 10.5kV medium-voltage resistive, inductive and capacitive loads, has four kinds of transformation ratios, and thus can transform the output voltages of diesel generators with different voltages to 10.5kV voltage side through the transformer to perform resistive, inductive and capacitive load tests, reduces the need for different voltage loads of equipment and investment for testing diesel generators with different voltages, has good compatibility, significantly improves the utilization efficiency and economy of the testing device, the transformer adopts Yyyn0 connection group, guarantees the authenticity of harmonics in the test, is beneficial to reflecting the test performance and actual operation condition of the diesel generator, and the safety control automation degree of the testing device is high, effectively preventing operation safety risks.

The invention discloses an alternating-current power grid matching safety test verification system which comprises a low-voltage alternating-current power distribution structure composed of a static power source, a power distribution board, a power distribution box and a load, and the static power source is a simulation static power source converting direct current into alternating current. The invention further discloses an alternating current power grid matching safety test verification method. The method improves the authenticity of a protection matching test result, and can be widely applied to the technical field of electric power.

This invention discloses an autonomous driving power redundancy system and driving equipment, relating to the field of automotive technology. The system includes: a high-voltage power battery, a first power supply circuit, a second power supply circuit, and a third power supply circuit. The first power supply circuit includes a first DC-DC voltage conversion module, with the high-voltage power battery connected to the first DC-DC voltage conversion module, for supplying power to a first battery and a first load component. The second power supply circuit includes a second DC-DC voltage conversion module, with the high-voltage power battery connected to the second DC-DC voltage conversion module, for supplying power to a second battery and a second load component. The third power supply circuit includes a third DC-DC voltage conversion module and a circuit breaker, with the high-voltage power battery sequentially connected to the third DC-DC voltage conversion module and the circuit breaker, for supplying power to the third battery, a third load component, and part of the second load component. This invention solves the technical problem that existing technologies using a single power supply cannot meet the functional safety requirements of autonomous driving systems.

The present disclosure relates to controlling a group of electrical loads. A load control system can include a control device for controlling an electrical load. The control device can include a load control device, such as a lighting device for controlling an amount of power provided to a lighting load, and a controller device, such as a remote control device configured to send digital messages for controlling the lighting load via the load control device. The remote control device can communicate with the lighting device via a hub device. The remote control device can detect a user interface event, such as a button press or rotation of the remote control device. The remote control device or the hub device can determine whether to send a digital message as a unicast message or a multicast message based on a type of the detected user interface event. The remote control device or other master device can synchronize and / or toggle on / off states of lighting devices in the load control system.

The present invention provides an aspiration component generating device that can accurately acquire the voltage value of a battery and reliably determine if it is in a low charge state. [Solution] The suction component generating device 100 comprises a power supply 10, a load group 125 including a load that vaporizes or atomizes the suction component source using power from the power supply, and a control circuit 50 configured to acquire the voltage value of the power supply 10. The control circuit 50 is configured to perform a1: a process of acquiring the closed-circuit voltage value CCV of the power supply 10 in a closed-circuit state in which the power supply 10 and the load group 125 are electrically connected, and a2: a process of comparing the acquired closed-circuit voltage value CCV with a first reference voltage value, and determining that the power supply 10 is in a low remaining charge state if it is less than or equal to the reference voltage value.

The invention discloses a power supply stabilizing circuit and equipment, and is applied to the technical field of power supply. The circuit comprises a power supply circuit, at least one DC / DC converter and at least one auxiliary battery. In the design, the DC / DC converter and the auxiliary battery are connected with the power supply circuit and the load assembly, and when the power supply voltage output by the main battery in the power supply circuit is unstable, the auxiliary battery is charged or the connection with the auxiliary battery is disconnected through the characteristic that the DC / DC converter outputs the fixed voltage; however, the auxiliary battery is not affected to provide the safe starting voltage required by starting for the electric load in the load assembly by means of the electric quantity and the voltage of the auxiliary battery. It is ensured that an electric load in the load assembly cannot work normally due to the fact that the power supply voltage output by the power supply circuit is unstable, so that the probability that the load assembly reports errors, malfunctions and even self-protection shutdown is reduced, and then potential safety hazards brought by engineering machinery or a vehicle in the using process are reduced.

The invention discloses a heat tracing band load group timing switching method and system, and relates to the technical field of temperature control of high-voltage equipment of a power system, and the method comprises the steps: collecting the current temperature of target equipment in real time; performing temperature judgment based on the current temperature and the starting temperature, controlling the state of the corresponding heat tracing band load group based on a judgment result, and obtaining the starting duration; duration judgment is carried out based on the starting duration and the switching period, other heat tracing band load groups are switched based on the judgment result, or the load current value of the heat tracing band load group which runs at present is monitored; and performing abnormity judgment based on the load current value, and switching a fault heat tracing band load group based on a judgment result or executing related operation on the current heat tracing band load group based on the current temperature and the stop temperature. And the problem of loss easily caused by synchronous start and stop of the heating device is avoided, so that the stability and the reliability of primary equipment under high-temperature operation are improved.

The invention discloses a vehicle electrical system and method, electronic equipment and a storage medium. The system comprises a power supply loop, the first input end of the power supply loop is connected with the positive electrode of a power battery, and the second input end of the power supply loop is connected with the negative electrode of the power battery; the conversion loop is deployed in the power battery; the first end of the pre-charging loop is connected with the positive electrode of the power battery, and the second end of the pre-charging loop is connected with the first output end of the power supply loop; the first end of the reverse pre-charging loop is connected with the first input end of the first load assembly, and the second end of the reverse pre-charging loop is connected with the fifth end of the conversion loop. The technical problem of low reliability of a vehicle electrical system in related technologies is solved.

Vehicle power supply system, comprehensive: an electric motor (2) designed to use the movement of a vehicle (1) to generate electric current and to assist the movement of the vehicle (1); a set of electrical loads (3) that requires a stable supply of electrical current when the vehicle (1) is moving; a first battery (4) which is connected to the electric motor (2) and the set of electrical loads (3) and is designed to supply them with electric current; a second battery (5) connected to the electric motor (2) and the set of electrical loads (3) and designed to supply them with electric current, wherein the second battery (5) is designed to repeat a charge within a shorter period of time than the first battery (4); a first switch (SW1) designed to establish and break a first connection between the first battery (4) and the electric motor (2); a second switch (SW3) designed to establish and break a second connection between the first battery (4) and the set of electrical loads (3); a third switch (SW4) designed to establish and break a third connection between the second battery (5) and the set of electrical loads (3); and a control unit (10) designed to control the first switch (SW1), the second switch (SW3) and the third switch (SW4), wherein the control unit (10) is designed to control the first, second and third switches (SW1, SW3, SW4) such that the first connection is interrupted, one is made from the second and third connections and the other is interrupted from the second and third connections in order to control the electric motor (2) so that it is driven to assist in the movement of the vehicle (1).

The present invention relates generally to Load Banks for testing generators and electric power sources and more particularly the present invention discloses a load bank system circuit topology and method thereof, to generate large number of discrete loading steps. The system and method thereof employs at least five switches RL1, RL2, RL3, RL4, RL5, at least five resistors R1, R2, R3, R4, R5, the R3 a special tap resistor having at least one tap movable along the length of the resistor R3 and divide the resistor into parts, at least two terminals, terminal T5, terminal T6 for connecting the load bank to a power source under test, to generate a large number of loading steps having minimum number of duplicate loading steps, minimum number of high power difference loading steps, high maximum to minimum load ratio and lowest value average resolution of the loading step.

Systems, apparatuses, and methods are described for a backup system. The configuration of the backup system in terms of number of load groups, power sources, and / or total power limit may be altered. An interface enclosure of the backup system may include a housing for electric circuitry, where the housing may be a clam-shell design including a base plate and a backup interface module. The base plate may comprise a frame, one or more detachable hinges, and / or two or more multi-terminals. The base plate may include a plurality of multi-terminals. The multi-terminals may be arranged to connect to one or more load groups, power sources, power devices, other multi-terminals, etc. Each load group that is connected to the multi-terminals may be disconnected from the utility grid and connected to the one or more sources of backup power in the case of a utility grid shutdown.

The invention relates to the technical field of electronic power, in particular to a server which comprises a data processing device and a first radiator, the data processing device comprises a load group and a power supply module, the load group comprises at least two loads, and the power supply module supplies power to the loads; the first radiator is in thermal connection with the power supply module, at least part of projection of the first radiator in a first plane is located on the outer side of a load area, the first plane is parallel to the upper surface of the load, and the load area is a minimum outer contour projection area, capable of covering all the loads, of the load group in the first plane. The power supply module and the load can be separated for heat dissipation, the first radiator does not occupy the heat dissipation space of the load, and the good heat dissipation effect of the load is guaranteed; meanwhile, at least part of the projection of the first radiator in the first plane is located on the outer side of the load area, fluid flowing through the first radiator in the rear row is not preheated by the load radiator in the front row, the temperature of the cooling medium is kept low, and therefore the heat dissipation capacity of the first radiator is high.

According to the method for improving the stability of the output power of the hydrogen fuel cell, a lithium battery is connected in parallel to a basic circuit composed of the hydrogen fuel cell and a load, and the hydrogen fuel cell and the lithium battery can independently supply power to the load; two MOS (Metal Oxide Semiconductor) tubes are connected in series between the positive electrode and the negative electrode between the hydrogen fuel cell and the load to form a reduction repair branch, and a circuit formed by all the components is a voltage-controlled constant current source circuit. The restoring and repairing branch can be composed of any controllable switching circuit forming a short-circuit function, such as a relay. According to the invention, a restoring and repairing branch composed of two MOS tubes is used for improving the turn-off reliability. In addition, due to the fact that the MOS tubes are selected to form the restoring and repairing branch, heating is completely controllable, no extra heat dissipation device needs to be added, the size is small, and the weight is hardly increased.

The application discloses a direct-current voltage conversion circuit and a direct-current voltage conversion system. The direct-current voltage conversion circuit is connected with an external signal source. The direct-current voltage conversion circuit is used for generating a target voltage signal according to an initial voltage signal provided by the external signal source. The direct-current voltage conversion circuit comprises a topology form selection module, a first inductor, a second inductor, a capacitor group and a load group. The topology form selection module switches a topology form to obtain a target topology form. The first inductor generates a first electric signal according to a pre-input phase state and the initial voltage signal. The second inductor generates a second electric signal according to the phase state and the initial voltage signal. The capacitor group performs electric storage and discharging according to the target topology form, the first electric signal and the second electric signal to output a discharging electric signal. The load group generates the target voltage signal according to the discharging electric signal. The application can reduce the loss of capacitor charging and discharging when the voltage conversion is relatively high, and improve the efficiency of the direct-current voltage converter.