208 results about "Power rating" patented technology

The invention discloses a load matching method of a tested power supply and related equipment. The method comprises the following steps: acquiring rated voltage, rated current and rated power of a tested power supply, drawing a power supply parameter curve based on the group of parameters, and determining a current turning point from the power supply parameter curve; according to the magnitude relationship between the actual output voltage of the tested power supply and the voltage corresponding to the current turning point, the rated current or rated power is flexibly selected as a reference basis to determine the resistance value of each load in the load box; and finally, selecting a plurality of loads connected in parallel from the load box as test loads according to the actual output voltage, and ensuring that the actual output current of the tested power supply reaches the rated current or the actual output power reaches the rated power. The rated current or the rated power is dynamically switched through the current turning point to serve as a reference basis, the load requirements of the tested power supply in different voltage intervals are accurately adapted, and the adaptability of load matching is greatly improved.

The embodiment of the invention discloses a pressure control method and system for a once-through steam generator of a nuclear reactor, and relates to the technical field of nuclear power. Determining power deviation according to the operation power and the secondary circuit load; according to the power deviation, the rated power corresponding to the nuclear reactor and the rated feed water flow corresponding to the once-through steam generator in the nuclear reactor, pressure regulation information is determined; and adjusting the pressure of the once-through steam generator according to the pressure adjusting information. According to the embodiment of the invention, a PID controller is not needed in the process of determining the pressure regulation information, but the pressure regulation information determined based on the power deviation directly acts on the feed water flow regulation valve, so that rapid and accurate OTSG pressure control can be realized.

The invention discloses a hybrid power parameter determination method and device and electronic equipment, and relates to the field of vehicle design, and the method comprises the steps: determining the engine displacement of which the average operation power of an engine is consistent with a target fuel consumption area according to the average operation power, the torque standard deviation, the maximum torque fluctuation value and the fuel type in a vehicle road spectrum; according to the method, the determined engine can work in the interval with higher efficiency, the fuel economy is improved while the conventional power requirement is met, and the engine cost is reduced. The rated power of the motor is further determined according to the maximum operation power in the vehicle road spectrum and the target engine external power, and the target engine external power is the external power corresponding to the target vehicle speed or the target rotating speed under the maximum operation power. And determining the battery capacity according to the rated power of the motor, the climbing duration in the vehicle road spectrum and the battery adjustment coefficient. And on the basis of the engine, motor driving is matched to increase the endurance mileage, and the economy of the whole vehicle is improved.

The invention relates to the technical field of network management, in particular to a switch voltage intelligent monitoring and abnormity regulation and control method and system, and the method comprises the following steps: reading port current and power supply voltage register conversion power consumption, writing the port current and power supply voltage register conversion power consumption into a port meter, comparing the port meter with rated power, and reading input / output and mainboard interface voltage according to an identifier; and positioning continuous periodic voltage change drop nodes, and determining a propagation node sequence by combining sampling time. According to the invention, by reading data conversion of a port current register and a port power supply voltage register and according to a power consumption accumulation result, power supply state judgment is associated with port load change, node voltage change is compared and identified by combining a continuous sampling period, and a voltage drop node is identified by combining a working voltage reference value. And a voltage propagation node sequence is obtained according to the sampling time, and the initial position of the power supply path is identified and is combined with the input voltage of the redundant power supply for register state writing, so that a voltage change source has a path association judgment basis.

The invention provides a coal mine security power supply underground load switching method and system, and relates to the technical field of power supply. The underground load switching method for the coal mine security power supply comprises the following steps: after a ground state monitoring unit determines that a ground substation is in a whole-substation power loss state, an intelligent control unit starts the security power supply; the power supply state monitoring unit monitors the operation state of the security power supply and evaluates to obtain the first real-time maximum output power of the security power supply; the intelligent control unit calculates first system available power according to the first real-time maximum output power and a preset safety coefficient; determining a target load based on the first system available power, the rated power corresponding to each underground load and a preset underground load priority; wherein the sum of the rated power of all the target loads is smaller than the first system available power, and the priority is used for indicating the importance sequence of the underground loads; and the load controller controls the switching system to supply power to the target load.

The invention discloses a method for determining a self-consuming power curve of a wind turbine generator, which comprises the following steps of: performing conversion according to an actually-measured wind speed and an actually-measured air density to obtain an equivalent wind speed under a standard air density, and segmenting the equivalent wind speed into various wind speed sections according to a standard power curve; self-consuming equipment is divided into constant-power equipment and variable-load equipment; working condition coefficients of all the constant-power devices and all the variable-load devices in the corresponding wind speed sections are determined; according to the rated power of each constant power device and each variable load device and the working condition coefficient of the corresponding wind speed section, respectively determining the self-consuming power of each wind speed section of each constant power device and each variable load device; summing the self-consumed power of the same wind speed section of all the constant power equipment and the self-consumed power of the same wind speed section of all the variable load equipment to obtain the self-consumed power of the whole machine in each wind speed section, and generating a wind speed section-self-consumed power curve. The actual operation condition is dynamically captured, and the accuracy and efficiency of generating capacity evaluation are improved.

The present application belongs to the technical field of intelligent household appliances, and particularly relates to a method and device for obtaining the power consumption of a water heater and an electronic device. By obtaining a plurality of reported data sets of the water heater in a target period, for each reported data in each reported data set, according to a preset rated power field and a plurality of real-time power fields, the real-time power value corresponding to the real-time power field in which the power value is written and the rated power value corresponding to the rated power field are extracted, and the power value corresponding to each reported data is determined; the time interval between each reported data and the previous reported data of the reported data is obtained, and then the power consumption of the time interval is obtained according to the obtained power value, and finally the power consumption of the target period is obtained by summation. In the above method, the preset rated power field and the plurality of real-time power fields are used, and the real-time power field with the power value is found in the real-time power field, thereby avoiding the problem of value error when obtaining the power value, and further causing the problem of power consumption calculation error.

The application relates to a charger and a power distribution method and a power distribution device thereof, the method comprising the following steps: determining the required power and the required current of a vehicle to be charged; determining the rated power and the maximum current of each charging module in the charger; calculating the number of required charging modules based on the required power and the rated power, or the required current and the maximum current; selecting the required charging modules in the charger based on a preset selection principle, combining the selected charging modules, and obtaining combined charging modules; and calling the combined charging modules to charge the vehicle to be charged. The application determines the number of required charging modules in advance, and then selects the required charging modules in the charger based on the preset selection principle, so that the problem of charging power redundancy caused by unreasonable charging power distribution is reduced.

A method for optimizing the performance of an electric drive (12) in a vehicle (10), wherein the electric drive (12) has a nominal power output, includes a limitation test step (2) in which it is checked whether at least one limitation reason exists which precludes a temporary increase in the power output of the electric drive (12) beyond the nominal power output.

This application discloses a method, a power cabinet, and a power distribution control system for controlling power distribution from a power module to a charging terminal. A power distribution method includes: a power control unit determining a power distribution mode for one or more charging terminals, including: obtaining the number of available modules in the power module; calculating the required number of modules based on the power demand from one or more charging terminals and the rated power of a single power module; comparing the required number of modules with the number of available modules; determining an efficiency-priority mode or a power-priority mode as the power distribution mode based on the comparison result; the power control unit selecting a target power module and determining a target power path based on the power distribution mode; and the power control unit sending an instruction to a power distribution unit, causing the power distribution unit to invoke the target power module to distribute power to the charging terminal by controlling the operation of a switch associated with the target power module and the target power path.

A method for evaluating at least one injector of an internal combustion engine includes the steps of: evaluating a plurality of the at least one injector of the internal combustion engine based on a power rating which is associated with an electric device that is operatively connected with the internal combustion engine.

Discussed is a power control apparatus and a power control method. The power control apparatus may monitor an output power of a power conversion system (PCS), detect changes in a voltage of a DC link, and control output power of a battery by comparing the output power of the PCS with a rated power of the battery, and thus, provides stabilization of an energy storage system by preventing voltage fluctuations in the DC link.

The embodiment of the invention provides a frequency converter type selection method and device and a motor no-load test method. The model selection method comprises the steps that the selectable range of the rated current of a to-be-selected frequency converter is determined according to the rated voltage and the rated frequency of a motor and the rated voltage and the rated frequency of the to-be-selected frequency converter, and the rated voltage of the motor is larger than the rated voltage of the to-be-selected frequency converter; according to the selectable range of the rated current of the to-be-selected frequency converter and / or the estimated value of the maximum output power of the motor in the operation process of the variable frequency driving motor of the to-be-selected frequency converter from the rated frequency of the to-be-selected frequency converter to the maximum frequency of the motor, determining the selectable range of the rated power of the to-be-selected frequency converter; and on the basis of the optional range of the rated current and the optional range of the rated power of the to-be-selected frequency converters, selecting one to-be-selected frequency converter meeting the verification condition that the allowable minimum leakage reactance of the motor is not greater than the leakage reactance of the motor when the motor is controlled to operate by the to-be-selected frequency converter from the to-be-selected frequency converter pool as the selected frequency converter.

This invention provides a power supply method, apparatus, device, and medium. The method includes: acquiring vehicle status data of a new energy vehicle; determining the operating status of the new energy vehicle based on the vehicle status data; determining the power consumption information of the new energy vehicle when it is in operation; and determining a target DC-DC converter from at least three DC-DC converters of different power ratings based on the power consumption information, and using the target DC-DC converter to supply power to the new energy vehicle. This invention solves the problem of increasingly high low-voltage power consumption in vehicles, ensures stable operation and efficient energy management of vehicles under various operating conditions, guarantees power supply safety, and improves the functional safety level of vehicles.

The application discloses a kind of multi direct current charging pile adaptive on-line method, belong to direct current charging pile technical field, comprising: the charging pile needing on-line is connected, and on-line mode is set;The charging pile of on-line respectively carries out self-checking;If charging pile self-checking is normal, then execute joint self-checking;When the charging pile passing joint self-checking fails, execute fault strategy;When on-line power exceeds charging gun gun line rated power, limit the maximum output power of charging gun;The multi direct current charging pile adaptive on-line method, when current single machine output power cannot satisfy the demand of car end, broadcast to find whether there is idle power module for use in on-line pile;After on-line parameter setting is completed, self-broadcast constructs on-line topology, improves single machine output power, on the basis of guaranteeing charging safety and reliability, idle power module of on-line charging pile is reasonably called, effectively improves charging efficiency.

The application provides a power module and an electronic device, which can be applied to the technical field of hardware. The power module comprises: a plurality of power modules; an input module connected with the plurality of power modules, the input module being used for receiving a first voltage and a second voltage, providing the first voltage as an input voltage of the plurality of power modules to the plurality of power modules respectively, and providing the second voltage as the input voltage of the plurality of power modules to the plurality of power modules respectively in response to a failure of the first voltage; and a control module connected with the plurality of power modules, the control module being used for controlling the plurality of power modules to convert the input voltage into an output voltage, and controlling the remaining power modules to supply power in response to a failure of less than or equal to X power modules in the plurality of power modules, wherein the total number of the plurality of power modules is X+N, X and N are positive integers, and the sum of the rated powers of N power modules is equal to a planned load of the power module.

The application relates to the technical field of uninterrupted power supply, in particular to a motor uninterrupted power supply device capable of eliminating harmonic waves and resisting flicker, which comprises an external connection unit, a detection unit, an energy storage unit and a control unit. The external connection unit comprises a rectifier, an inverter and an output filter. The detection unit is used for detecting the voltage drop amplitude of direct current output by the rectifier. The energy storage unit is used for storing electric energy. The control unit is used for determining whether the energy storage unit carries out a constant-power discharge mode or a variable-power discharge mode matched with the load power demand according to the voltage drop amplitude. The modulation ratio of the rectifier is adjusted according to the voltage fluctuation rate of the direct current under the condition of carrying out the constant-power mode discharge. The output mode of the inverter is determined according to the rated power ratio of the energy storage unit under the condition of carrying out the variable-power mode discharge matched with the load power demand. The output mode of the inverter comprises a full-capacity output mode and a double-modulation wave output mode. The application realizes the improvement of the precision of voltage drop compensation.

This invention discloses a method for determining the status of a new energy grid-connected cabinet based on real-time data, relating to the field of new energy grid-connected cabinet monitoring technology. The method includes the following steps: real-time acquisition of 5-second real-time data and rated voltage and rated power parameters of the new energy grid-connected cabinet; based on the acquired data, the following judgment process is performed on the new energy grid-connected cabinet: an offline judgment is executed based on unchanged data, specifically: if the grid-connected cabinet meets the conditions of unchanged offline data and is currently in a fault state, the grid-connected cabinet is judged to be faulty; if it meets the conditions of unchanged offline data and is currently not in a fault state, the grid-connected cabinet is judged to be faulty. The new energy grid-connected cabinet status determination method proposed in this invention significantly improves the accuracy and reliability of new energy grid-connected cabinet status determination by comprehensively utilizing real-time data acquisition and analysis technology. It not only considers key parameters such as the real-time operating voltage, current, and power of the equipment, but also effectively avoids the misjudgment problems that may arise from traditional fixed threshold judgment methods.

The application relates to a compressor operation control method and device, computer equipment and a storage medium. The method comprises the following steps: when the compressor is in an operation state, acquiring a current rotating speed value and a current actual power consumption value of the compressor, and acquiring a current system high pressure value; according to the current rotating speed value, the current system high pressure value and a pre-established rated power calculation model, determining a current rated power value of the compressor; and according to the current actual power consumption value and the current rated power value, controlling the operation state of the compressor. The method does not need to determine whether the compressor is abnormal through an additional external sensor, thereby reducing the monitoring cost of the compressor.

The invention discloses a distributed power reduction circuit for a desktop docking station and a control method, the distributed power reduction circuit comprises a protocol chip 1 and a protocol chip 2, a P1 detection line and a P2 detection line are connected between the protocol chip 1 and the protocol chip 2, when related signals are detected, power reduction configuration is carried out, and the P1 detection line and the P2 detection line are in a low level by default; the port C1, the port C2, the port A and the port C5 are connected with the protocol chip 1, through cooperative interaction between the dual-protocol chip and the detection lines P1 and P2 and in combination with multiple designs of the NTC temperature sensor, the Bus switch and the sampling resistor, all-scene refined power distribution is achieved, efficient output of all the interfaces according to the maximum rated power during single-port access is guaranteed, and the maximum rated power of all the interfaces is guaranteed; and the power can be dynamically adjusted in a multi-port simultaneous access or over-temperature scene, so that the total output is ensured not to exceed the rated power of the pre-stage AC-DC charger all the time, and restart, shutdown or charging interruption of equipment are avoided.

The invention discloses an automatic test method for rated power of a DC / DC converter of a new energy automobile, which mainly aims at finding and adjusting the condition that the actual output power of the DC / DC converter is higher than a rated value in time and avoiding the risks of fuse fusing, line overheating, low-voltage electric equipment burning, even fire and the like caused by exceeding the bearing limit of a low-voltage system component. Specifically, the method comprises the steps of firstly deploying a power test system and performing line connection, setting test parameters after deployment is completed, starting a test and collecting test data within a preset test duration; in the test process, when the output power of the DC / DC converter exceeds the power control upper and lower limit values, the current of the DC electronic load is automatically adjusted, so that the output power of the DC / DC converter returns to the control range. According to the invention, the test value of the rated power of the DC / DC converter can be accurately obtained at one time, the test cost is greatly reduced, the safety is improved, and the consistency and reliability of the test result are effectively ensured.

The application discloses a power supply device and a control method thereof, and a computer readable storage medium. The power supply device is provided with a control chip and at least two power supply ports, at least part of the at least two power supply ports is connected with the control chip of the power supply device through an extension cord, and the method comprises the following steps: the control chip acquires a first temperature sent by a temperature detection component in response to a target power supply port being connected with an electric device; wherein the target power supply port is at least one of the at least part of the power supply ports; the control chip compensates the first temperature according to a temperature compensation coefficient to obtain a second temperature; wherein the temperature compensation coefficient is related to the extension cord corresponding to the target power supply port; and the control chip adjusts the output power rating allocated to the target power supply port according to the second temperature. Through the above method, the temperature rise of the extension cord in the working process of the power supply device can be solved.

A computer device provided includes an electronic system, a power supply unit, and a power control module. The electronic system includes a main board with a power connector and a central processing unit (CPU). The power supply unit is configured to supply power to the electronic system. The power control module includes a power specification detection unit, a system power consumption monitoring unit, and a power regulation unit. The power specification detection unit is electrically coupled to the power connector, and is configured to determine a rated power of the power supply unit. The system power consumption monitoring unit is electrically coupled to the power supply unit, and is configured to detect a system power consumption of the electronic system. The power regulation unit is electrically coupled to the CPU, and is configured to control a frequency of the CPU based on the system power consumption and the rated power.

This invention relates to the field of pumped storage technology, and discloses a method, device, medium, and product for joint regulation and control of pumped storage units. The method includes: acquiring the rated power value, variable speed operation power adjustment range, and hydraulic short-circuit operation power adjustment range of the pumped storage unit to be controlled; upon receiving the power absorption value from the power grid dispatch system, determining a first ratio between the power grid dispatch absorption power and the rated power value; acquiring the maximum variable speed operation power value based on the variable speed operation power adjustment range, and determining a second ratio between the maximum variable speed operation power and the rated power; and determining the target operating mode of the pumped storage unit to be controlled based on the first ratio, the second ratio, the variable speed operation power adjustment range, and the hydraulic short-circuit operation power adjustment range, and controlling the operation of the pumped storage unit. Therefore, by implementing this invention, considering the hydraulic short-circuit operation mode, continuous regulation of absorbed power across the entire power range is achieved.

The invention discloses a self-adaptive control method and system for primary frequency modulation of a power grid, and relates to the technical field of power system automation and new energy grid-connected control, and the method comprises the following steps: when the energy storage residual electric quantity is within the range of 15%-25%, the energy storage output power is greater than 30% of the rated power, and the absolute value of the frequency deviation of the power grid is greater than 0.08 Hz, controlling the frequency of the power grid; the fixed virtual inertia is replaced with a two-dimensional matrix changing in real time along with the residual electric quantity and the direct current bus voltage, virtual capacitance current in the direction for preventing the direct current bus voltage from dropping is synchronously generated, and the magnitude of the virtual capacitance current is in direct proportion to the change rate of the direct current bus voltage; in the cliff interval with the energy storage residual electric quantity of 15%-25%, the phenomenon of undervoltage locking at the moment of primary frequency modulation high-power discharge caused by fixed virtual inertia is thoroughly eliminated, the frequency secondary collapse probability is reduced to zero, and no hardware is added.

The application discloses an oil pump rotating speed control method, system, device and computer readable storage medium, relates to the automobile control technical field, and specifically includes the following steps: acquiring a current operation condition of a target hybrid electric drive assembly; determining the category of the current operation condition to obtain a target operation condition, wherein the target operation condition is any one of a rated power below operation condition, a rated power to peak power operation condition and a peak power operation condition; determining an oil pump rotating speed critical value according to a target strategy corresponding to the target operation condition, wherein the target strategy comprises a real-time driving motor temperature, a real-time generator temperature and / or a preset temperature threshold value, a preset temperature deviation and a preset temperature critical value; and performing rotating speed control on the oil pump by taking the oil pump rotating speed critical value as a target rotating speed.

The invention discloses a combined motor formed by coaxially connecting a plurality of motors in parallel, which comprises a base, a left end cover and a right end cover, the right end cover is provided with a first round hole, the inner side of the first round hole is provided with a first rolling bearing, the left end cover is provided with a second round hole, and the inner side of the second round hole is provided with a second rolling bearing. An output shaft is arranged in the machine base and installed on inner rings of the first rolling bearing and the second rolling bearing, a plurality of motor units which can be connected in parallel into a whole are installed in the machine base, each motor unit is a motor capable of working independently, the structure is consistent, the rated voltage, the rotating speed and the frequency are the same, and the rated power can be the same or different. The multiple motor units can work separately or in a combined mode to drive the output shaft to rotate. The combined motor has the beneficial effects that when the load rate of the motor is changed, the load rate of the combined motor reaches a curve section with the highest efficiency through independent or combined work of the motor units, so that the working efficiency of the motor is higher, and more energy is saved.

The embodiment of the invention provides a power quota allocation method and device for a network video recorder and electronic equipment, and the method comprises the steps: enabling the network video recorder to dynamically determine a peripheral total power quota corresponding to at least one peripheral through responding to the connection of the at least one peripheral with a mainboard, and enabling the peripheral total power quota of the at least one peripheral to be matched with the power quota of the network video recorder; according to the peripheral total power quota and the mainboard power quota, the unoccupied residual power quota in the power supply rated power quota of the network video recorder is allocated to at least one network camera, the power supply rated power quota of the network video recorder is utilized to the maximum extent, the waste of power resources is avoided, and the power utilization rate of the network video recorder is improved. Compared with a fixed power quota allocation mode in the prior art, the method dynamically allocates the residual power quota to at least one network camera, has good compatibility, can directly improve the power supply efficiency of the NVR, efficiently utilizes the power supply rated power quota of the power adapter, and provides more power resources for the network camera.

An addressing optimization method for establishing an energy storage system by considering multiple factors belongs to the technical field of energy storage optimization configuration, and comprises the following steps: establishing a double-layer optimization configuration model of the energy storage system, the outer layer comprising investment cost and daily operation cost; the inner layer comprises system active power loss and system voltage deviation; establishing a double-layer optimization configuration model constraint condition according to the energy storage charge state; adopting an improved multi-target particle swarm algorithm to obtain the minimum installation capacity and the operation power of each energy storage; and taking the output power as the rated power, and optimizing a configuration scheme with the minimum investment cost as an energy storage system addressing scheme. According to the invention, a multi-strategy improved multi-objective particle swarm optimization (CMOPSO-MSI) is introduced to solve a multi-objective optimization model of hybrid energy storage. Through combination of various strategy improvements, the algorithm aims to overcome a series of problems that premature convergence is in a local non-dominated solution, inertia weight setting lacks guidance and the like, and better Pareto frontier distribution is realized.

The embodiment of the invention discloses a pressure control method and system for a once-through steam generator of a nuclear reactor, and relates to the technical field of nuclear power. Determining a first change rate coefficient according to the operation power, the rated power of the nuclear reactor and a corresponding first preset parameter; determining a second change rate coefficient according to the operating power, the rated power and a second preset parameter; determining the change rate of the secondary loop load according to the secondary loop load and the first change rate coefficient; determining pressure regulation information according to the secondary loop load change rate and the second change rate coefficient; and adjusting the pressure of the once-through steam generator according to the pressure adjusting information. The pressure regulation information is determined according to the secondary loop load change rate, the hysteresis effect caused by control based on physical quantities such as pressure deviation or flow deviation is avoided, the pressure regulation information can be determined in time, and then control over the pressure of the once-through steam generator is rapidly achieved in time.