36results about How to "Reduce capacity requirements" patented technology

The invention provides a power supply control device for collision unlocking of a traffic vehicle, and aims to improve the success rate of collision unlocking and reduce the capacity of a redundant power supply at the same time, the device comprises a main power supply, a standby power supply and a controller, the main power supply supplies power to a safety load and a non-safety load of the traffic vehicle, and the standby power supply supplies power to the controller. The standby power supply supplies power to the safety load when the main power supply breaks down, the controller controls the main power supply to stop supplying power to the non-safety load after receiving the collision signal, power supply to the safety load such as a door lock actuator is ensured, and therefore the door lock is driven to be unlocked. According to the device, the safety of a collision unlocking function is effectively improved, the capacity requirement of a standby power supply is reduced, and the problems of cost and arrangement are solved.

This disclosure provides an X-ray imaging device and its power distribution unit and wireless power transmission device. The power distribution unit includes: a first rectifier circuit, a charging circuit, an energy storage module, and a first inverter circuit; the input terminals of both the first rectifier circuit and the charging circuit are connected to the external power grid; the output terminal of the first rectifier circuit is connected to the input terminal of the first inverter circuit, and the output terminal of the first inverter circuit is connected to the wireless power transmission device of the X-ray imaging device; the output terminal of the charging circuit is connected to one end of the energy storage module, and the other end of the energy storage module is connected to the input terminal of the first inverter circuit. In this disclosure, the power supply from the power grid and the power supply from the energy storage module are in parallel, which can reduce the imaging device's demand on the power grid capacity. Since the charging circuit only participates in the charging process of the energy storage module and does not participate in the discharging process of the energy storage module, it can realize simultaneous charging and discharging of the energy storage module, and there are no excessive requirements on the power level of the charging circuit, which can reduce the cost of the charging circuit.

The invention discloses a power supply device, a control method thereof, equipment, a storage medium and a product. The power supply device comprises a rectifier module, a first Boost module, a first thin-film capacitor and a second thin-film capacitor. The rectification module is used for rectifying an external AC power supply into a DC signal which is used for supplying power to a load. The power supply end of the first Boost module is connected with the output end of the rectifier module, and the output end of the first Boost module is connected with a load; the first thin-film capacitor is arranged between the output end of the rectifier module and the power supply end of the first Boost module; and the second thin-film capacitor is arranged between the output end of the rectifier module and the load and is used for filtering the direct-current electric signal. The direct current signal is also used for charging the first thin-film capacitor; the first film capacitor is used for supplying power to the load through the first Boost module when the voltage value of the direct current signal is smaller than a first set voltage value. The thin-film capacitor with the long service life is adopted to replace an electrolytic capacitor with the short service life, and the service life of the power supply device is prolonged.

According to the ZNS-based AI large model storage acceleration algorithm provided by the invention, the storage mode of the ZNS-based neural network learning algorithm and the state machine scheduling algorithm are defined, and the ZNS-based SSD independently stores parameters of each layer, so that the requirement of equipment for large-capacity memory storage is reduced, and the storage speed of the equipment is improved. Meanwhile, the parameter import performance in the neural network algorithm learning process is improved, and the overall power consumption and the whole disk write amplification are reduced. According to the method, an upper computer mode matched with ZNS SSD is defined in combination with the processing process of a neural network learning algorithm, the operation performance of a model is improved in cooperation with an upper computer, and upper-layer ecological software can conveniently mobilize data of each Zone; the ZNS SSD is matched with the upper computer to define the time sequence of the loading parameters of each layer, the capacity requirement for the DRAM in the large model processing process is reduced, meanwhile, the ZNS SSD enters the low-power-consumption mode when the model parameters do not need to be loaded so as to save the power consumption of the whole machine, and the application field and scene of the large model can be conveniently popularized.

The invention relates to the technical field of energy conservation and consumption reduction of coal-fired units, in particular to a novel energy storage type dry peak cooling system which comprises a peak condenser, a dry air cooling tower, a reservoir, a reservoir circulating pump, a cooling tower circulating pump and a DCS control center. And a corresponding instruction is made according to a comparison result after the back pressure threshold value is compared with a built-in back pressure threshold value. On the basis of the energy storage type design concept, cooling water resources are reasonably allocated and stored, the capacity requirement of the dry type air cooling tower is reduced, and the problem that the space in a plant is limited is solved; meanwhile, by adopting a mixed cooling mode of cold water of the dry-type air cooling tower and cold water of the reservoir, the temperature of the peak condenser is effectively reduced, the back pressure of the unit is further reduced, the on-load capacity of the unit is improved, and the unit can stably operate under nameplate output in the high-temperature period in summer; the problems that an original direct air cooling system is high in back pressure and limited in load in summer are solved.

A data quantization method and device, a computer readable storage medium and a chip, the data quantization method comprising: obtaining a data block to be quantized, dividing the data block to be quantized into one or more data groups to be quantized according to a preset grouping method; performing quantization calculation on each data group to be quantized according to a target quantization format, to obtain quantization data corresponding to data in each data group to be quantized and quantization metadata corresponding to each data group to be quantized, wherein the quantization metadata is used for dequantization of the quantization data; and storing the quantization metadata corresponding to the data block to be quantized and the quantization data as a continuous data structure.

The application discloses a kind of modular multilevel converter thermal balance control method and system based on dynamic retention factor, for the thermal imbalance problem of flexible direct current transmission modular multilevel converter, propose thermal-electricity collaborative control method based on dynamic retention factor (DRF), break through the limitation of traditional capacitor voltage balancing strategy.Capacitor voltage tolerance boundary (rated value ±5%~10%) is set, combined with real-time temperature feedback to build dynamic weight adjustment mechanism, collect IGBT junction temperature to calculate normalized temperature deviation value, generate dynamic retention coefficient, and then obtain the corrected capacitor voltage, in charging mode, low-temperature module is preferentially put into in ascending order, in discharging mode, high-temperature module is preferentially put into in descending order;Further integrate model predictive control (MPC), based on thermal model rolling solution minimization temperature difference objective function, adjust dynamic adjustment coefficient ΔK.The scheme can effectively solve the problem of small-capacitor module thermal fatigue early decline, provide high reliability technical support for high-voltage high-power new energy grid-connected equipment.

The invention discloses a power grid-oriented virtual power plant monitoring system, and relates to the technical field of power grid-oriented virtual power plant monitoring systems, and the technical scheme is characterized in that the system comprises a centralized control module, a transmission module and an alarm module; the centralized control module is electrically connected with the transmission module and the alarm module. The transmission module is electrically connected with the alarm module. And the centralized control module comprises a data monitoring module and a wireless communication module, and the centralized control module is used for operating the power plant operation equipment and carrying out analogue simulation and operation on the power plant operation equipment. The power grid-oriented monitoring system for the virtual power plant has the effects that when the power grid-oriented monitoring system is used, the operation state of energy storage equipment in the virtual power plant can be adjusted in real time according to the generated difference value, and when the preset power supply amount of the virtual power plant is different from the actual power supply amount, the energy storage equipment can be adjusted, so that the power grid-oriented monitoring system is more convenient to use. Therefore, the capacity demand for the energy storage equipment is reduced, and the cost output of the virtual power plant is reduced to a certain extent.

The application provides a lithium battery electrolyte preparation combination set, a site preparation method and device, and relates to the technical field of lithium batteries. The combination set comprises a base liquid unit and an active additive unit which are independently sealed and packaged; the specifications of the base liquid unit and the active additive unit are prepared according to a preset ratio, so that the active additive unit can be added to the base liquid unit and mixed to form a lithium battery electrolyte; the base liquid unit is stored in an environment at a first temperature; and the active additive unit is stored in a protective environment at a second temperature, and the second temperature is lower than the first temperature.

The invention discloses an anti-islanding driving circuit suitable for a distributed photovoltaic grid-connected circuit breaker. The anti-islanding driving circuit comprises a DC-DC power supply circuit, a super-capacitor charging control circuit, a super-capacitor boost discharging circuit, a motor driving circuit, a motor charging linkage circuit and a motor current-limiting protection circuit. The DC-DC power supply circuit converts 12V input voltage into motor target voltage, the super capacitor charging control circuit adopts double NPN triodes and diodes to prevent reverse breakdown, and charging is stopped when the motor is started. The super capacitor boost discharge circuit supplies power to the motor when the main power supply is powered off. The motor driving circuit controls operation of a motor through logic level signals, a sampling resistor monitors input current, and the linkage circuit adopts AND gate logic peak shifting power utilization. And the current-limiting protection circuit realizes overcurrent protection through the current induction amplifier and the control triode. According to the invention, the photovoltaic grid-connected connection can be automatically disconnected, the islanding effect is prevented, and the reliability and the stability are high.

The embodiment of the invention relates to a control method and device of photovoltaic equipment, the photovoltaic equipment and a storage medium. The method comprises the steps that the photovoltaic power generation power of the photovoltaic equipment is acquired, and the state of charge of an electric energy storage module of the photovoltaic equipment is acquired; determining a current phase change energy storage mode of a phase change energy storage module of the photovoltaic equipment according to the photovoltaic power generation power; and controlling the phase change energy storage module according to the phase change energy storage mode, and controlling the electric energy storage module according to the charge state. By adopting a double-energy-storage framework combining electric energy storage and thermal energy storage, different modules of the photovoltaic equipment can be controlled according to photovoltaic power generation power and the state of charge of a battery, so that an energy supply mode is adjusted, an air conditioner in the photovoltaic equipment is enabled to operate stably, the battery capacity demand is effectively reduced, the system cost is reduced, and the energy utilization rate is optimized.

The invention discloses a long-stator linear motor boosting system with short-time high-power output. The system comprises an energy storage unit, a current conversion unit, a driving unit and a control unit, the converter unit is connected with the energy storage unit, the driving unit and the control unit. The control unit is respectively connected with the energy storage unit and the driving unit; through mutual cooperation of the energy storage unit and the current conversion unit, the system can be compatible with external direct current network power supply, the requirements of the linear motor boosting system for the voltage and capacity of the energy storage system are reduced, the impact on the direct current network is also reduced, meanwhile, through design of the driving unit, the operation reliability of the linear motor boosting system is enhanced, and the service life of the linear motor boosting system is prolonged. And the failure rate of the linear electric boosting system is reduced.

The invention belongs to the technical field of wind power generation, and particularly provides a semi-direct-drive direct-current type wind turbine generator based on a multi-winding transformer and a control method.The wind turbine generator comprises an impeller and the multi-winding transformer, and the impeller is connected with a wind driven generator through a gearbox; the output end of the wind driven generator is connected with a primary winding of the multi-winding transformer, and each secondary three-phase winding of the multi-winding transformer is connected with an electric energy conversion unit through a three-phase alternating-current circuit breaker; the anode output end of each electric energy conversion unit is used as a first electrical interface of the electric energy conversion unit after passing through a direct current circuit breaker; the cathode output end of each electric energy conversion unit passes through a direct current circuit breaker and then is used as a second electrical interface of the electric energy conversion unit; a bypass switch is connected between the first electrical interface and the second electrical interface of the same electric energy conversion unit; the output ends of the electric energy conversion units are connected in series. No circulating current problem exists, and the output voltage grade of the wind turbine generator is improved.

The invention provides an auxiliary converter equipment control method and device in an offshore wind power DC system, and the method comprises the steps: carrying out the proportional-integral control of an offshore AC voltage frequency deviation through a frequency control module, generating a DC voltage reference value, assigning the DC voltage reference value to a DC internal potential of auxiliary converter equipment, and achieving the indirect control of frequency; meanwhile, a d / q-axis controller is used for controlling capacitor voltage and PCC point voltage deviation, a d / q-axis current reference value is generated, a harmonic suppression module is combined to compensate harmonic current, and finally a voltage reference value calculation module is used for generating a three-phase bridge arm voltage reference value by using a proportional resonance controller and a linear transformation matrix; and active / reactive decoupling control and frequency stability control are realized. The invention also provides a corresponding control device, electronic equipment, a storage medium and a program product, and can be applied to an open sea high-capacity wind power delivery system, so that the system oscillation risk is effectively reduced, the capacity demand of auxiliary commutation equipment is reduced, and the system stability and the electric energy quality are improved.

The invention provides a TGC data consistency processing method and system, equipment and a medium, and relates to the technical field of acoustic experiments. The processing method comprises an exporting method, according to the exporting method, sampling points are divided to obtain a plurality of sampling intervals, a plurality of gain values corresponding to the sampling intervals are obtained, a TGC discrete data sequence is constructed, and compared with an existing method for exporting all TGC curve data, the sequence has the advantages that the TGC curve data volume is reduced, and the TGC curve data volume is reduced. According to the method, the requirement for the capacity of the storage device is lowered, the export efficiency is improved, the gain values corresponding to the sampling intervals are all corrected into the set gain values, it is guaranteed that the gain values are the same in precision, and the data consistency is improved.

The invention discloses a heliostat wireless control system and method based on multiple frequency bands. The system comprises an in-situ layer, a convergence layer and an application layer. The in-place layer is a heliostat in-place control layer and comprises a communication gateway, an in-place controller and corollary equipment of the in-place controller; the in-situ layer is based on a cable-free design, and the communication gateway and the in-situ controller are in communication connection through a wireless network; the convergence layer comprises a control center, a switch and a wireless management platform; the control center manages the communication gateway, distributes frequency bands for the communication gateway, and accesses the mirror field optical fiber ring network through the switch to communicate with the mirror field control system; the application layer comprises a mirror field operator station, an engineer station and a mirror field control and scheduling system, and is used for data collection, display and scheduling of the whole mirror field control system. According to the invention, the cost of the mirror field in the aspects of power distribution equipment, cable purchase and construction is obviously reduced.

The present disclosure relates to a charging control method, medium, program product, controller and vehicle. The method includes: the charging control method includes: when the on-board charger is in the first working mode, the power factor correction circuit is subjected to dual-loop control of the power outer loop and the AC current inner loop, the resonant circuit is subjected to fixed-frequency open-loop control, and the secondary drive signal of the resonant circuit follows the primary drive signal of the resonant circuit. In this way, even when the output power of the main circuit is small or unloaded, a relatively high bus voltage of the power factor correction circuit can be maintained to ensure the power supply capacity of the auxiliary circuit under different load conditions. Fixed-frequency control of the resonant circuit can avoid the problem of insufficient auxiliary circuit power supply capacity caused by frequent operation of the primary side due to variable frequency control. In addition, only the current of the power factor correction circuit is controlled without voltage control, and the resonant circuit is subjected to fixed-frequency open-loop control, which can simplify the control logic and reduce vehicle costs.

The application relates to the technical field of offshore power generation, and provides an offshore wind power transmission system, a reactive power network construction control strategy determination method, device and equipment thereof. The method comprises the following steps: acquiring an operation condition of the offshore wind power transmission system; determining a reactive power network construction control strategy according to the operation condition; if the operation condition is a wind farm black start condition, the reactive power network construction control strategy is an auxiliary converter reactive power network construction control strategy; and if the operation condition is a wind turbine running-in condition, the reactive power network construction control strategy is the auxiliary converter reactive power network construction control strategy, a centralized wind turbine reactive power distribution link and a network-following wind turbine control strategy. The method determines different reactive power network construction control strategies through the operation condition, realizes wind turbine cooperative auxiliary converter reactive power network construction, makes the auxiliary converter not need to bear a high reactive power output, reduces the capacity requirement of the auxiliary converter, realizes auxiliary converter compactness and low cost, and thus reduces the construction cost of the offshore wind power transmission system.

This invention discloses a distributed transmit / receive power joint optimization method and system for a simultaneous information and energy transmission cooperative system. The method comprises the following steps: Step 1, constructing distributed performance indicators to characterize information rate and collected energy; Step 2, each access point independently performs joint allocation of transmit power and receive power splitting factors; Step 3, users calculate the power splitting factor based on their own rate requirements, energy requirements, and battery capacity limitations. This invention solves the problem of high fronthaul link interaction in existing centralized power allocation schemes in simultaneous information and energy transmission cooperative systems.

This invention provides a hybrid solid-state transformer and its power distribution method for normal power optimization, belonging to the field of power electronic transformer technology. It includes a power frequency transformer, a three-stage dual-parallel converter, a power sampling circuit, a hysteresis comparator circuit, and a combined controller. One end of the power frequency transformer is connected to the high-voltage grid, and the other end is connected to the AC load. The three-stage dual-parallel converter is connected in parallel with the power frequency transformer. The power sampling circuit acquires the voltage and current of the AC load and outputs an analog voltage signal. The hysteresis comparator circuit evaluates the operating conditions of the analog voltage signal and outputs a binary status signal. The combined controller acquires the binary status signal and the fault signal of the three-stage dual-parallel converter, and controls the operating state of the power frequency transformer and the three-stage dual-parallel converter. This invention solves the problems of low operating efficiency and uneven power distribution of existing transformers under light load, heavy load, and fault conditions.

The invention belongs to the technical field of power semiconductor testing, and provides a multi-pulse testing circuit and method for testing multiple power semiconductors simultaneously, and the circuit comprises a DC adjustable power supply, a charging switch, an anti-reverse diode, a DC capacitor, an inductor, and an energy storage battery. The anode of the direct-current capacitor is connected with the cathode of the anti-reverse diode, and the cathode of the direct-current capacitor is connected with the cathode of the direct-current adjustable power supply; wherein a first measuring point is arranged between the positive electrode of the direct-current capacitor and the inductor and is used for connecting a first to-be-measured device; and a second measuring point is arranged between the connecting point of the first measuring point and the inductor and the cathode of the energy storage battery and is used for connecting a second device to be measured. According to the test circuit disclosed by the invention, the device to be tested can be tested under the working condition as same as that of an actual working circuit, the loss is small, the control method is simple, the batch reliability test of the semiconductor device can be completed, and the packaging reliability and dynamic characteristics of the semiconductor device are effectively evaluated.

The utility model discloses a compensation capacitance box for error testing of a current transformer. The compensation capacitance box comprises a power factor unit, a combined capacitor unit and a resonance suppression unit, the power factor unit is arranged between the input ends or the output ends, the combined capacitor unit is arranged between the input ends or the output ends, the combined capacitor unit is located on one side of the power factor unit, and the resonance suppression unit is connected in a circuit of the combined capacitor unit in series; according to the utility model, the power factor unit and the combined capacitor unit are adopted, a real-time power supply power factor is monitored through the power factor unit, and the combined capacitor unit is used for connection or disconnection; a resonance suppression unit is further arranged, the circuit impedance is optimized by the resonance suppression unit, and the influence of harmonic waves on the circuit is reduced; the adjustable capacitor driven by the servo motor and the parallel RC damping loop work cooperatively, and the compensation capacitance and the circuit impedance are adjusted dynamically.

The invention discloses a direct-current data center flexible power supply system and a power supply method, and belongs to the technical field of data center power supply. The system comprises a direct-current power supply, a backup power supply, a server, a power supply main circuit and a power supply bypass; the power supply bypass is provided with a first DC / DC converter, one end of the first DC / DC converter is connected with the DC power supply, and the other end is connected with the backup power supply; the direct-current power supply is connected with the server through the power supply main circuit and is used for supplying power to the server through the power supply main circuit and charging the backup power supply through the first DC / DC converter in a normal power supply mode; and the backup power supply is connected with the server through the power supply bypass and is used for supplying power to the server through the power supply bypass in the backup power supply mode. Through the reasonable topological structure design, the power supply conversion efficiency is improved, unnecessary energy loss is reduced, the requirement for the capacity of the converter is reduced, the overall power supply efficiency and reliability of the system are effectively improved, and the equipment cost is reduced.

This invention relates to the field of power distribution, and in particular to a magnetically controlled transformer device for flexible interconnected power distribution networks. The device includes a first transformer, a second transformer, a magnetically controlled circuit, and a start-stop circuit. By connecting the secondary windings of the first and second transformers in series, and connecting the input of the magnetically controlled circuit to the secondary winding of the first transformer and the output to the primary winding of the second transformer, the magnetically controlled circuit only needs to provide a small adjustment voltage to regulate the amplitude and phase of the entire device's output voltage through the transformer coupling effect. This achieves bidirectional flexible scheduling of active and reactive power. Furthermore, since the main power path is primarily carried by the transformer windings, the magnetically controlled circuit only handles power regulation, significantly reducing the capacity requirements of full-power power electronic devices, thus reducing cost and size. Simultaneously, the magnetically controlled circuit is constructed using multiple sub-modules connected in parallel, each of which can be independently sampled, supporting online disconnection of faulty sub-modules, thereby improving system reliability and maintainability.

The invention discloses a direct current chain voltage control method for a permanent magnet synchronous motor system without an electrolytic capacitor, and the method comprises the steps: constructing a minimum bus voltage based on an expected voltage vector angle in real time according to the maximum output capability of a space vector modulation link and an output expected voltage vector; when the output voltage of the rectifier is lower than the minimum bus voltage, the power switch device in the direct-current chain is switched on immediately, so that the thin-film capacitor is switched into the direct-current chain, the insufficient output voltage of the rectifier is compensated by utilizing the voltage of the thin-film capacitor, and the direct-current chain voltage is always higher than the minimum bus voltage. The contradiction between reduction of the capacitance value of the direct-current chain thin-film capacitor and high-performance control of the driving system is effectively solved; under the condition that the space vector modulation technology is applied, the direct current link voltage stability of the permanent magnet synchronous motor system without the electrolytic capacitor in high-performance operation can be ensured, and therefore efficient and reliable control over the driving system is achieved.

This invention provides a cascaded controlled current source system based on supercapacitor energy storage, relating to the field of current source technology. The system includes: a three-phase NPC three-level rectifier module; a BUCK buck converter; a dual-tube parallel H-bridge inverter module; a current sampling unit located on the secondary side of the current-boosting transformer for real-time acquisition of the current flowing through the fuse under test; and an inverter-side proportional resonant controller. The input terminal of the inverter-side proportional resonant controller is connected to the output terminal of the current sampling unit to receive the error between the feedback current and the reference current command. The output terminal is connected to the drive terminal of the dual-tube parallel H-bridge inverter module. The proportional resonant controller has infinite gain at the fundamental frequency to ensure that the output current tracks the reference command without steady-state error. This invention can reduce grid capacity requirements while achieving a high-precision constant current control for a large current source.

This disclosure relates to a display panel and an electronic device. The display panel includes: an anode layer; a cathode layer; an encapsulation layer; an organic light-emitting layer, the organic light-emitting layer including a plurality of light-emitting blocks, at least one light-emitting block including a first light-emitting unit and a second light-emitting unit stacked and connected in series in the thickness direction of the display panel, the organic light-emitting layer being disposed between the anode layer and the cathode layer; and a color filter, the encapsulation layer being disposed between the cathode layer and the color filter, the color filter including a plurality of first color resists, the first color resists satisfying the following condition: wherein, there exists a first color resist with a first area between two adjacent first color resists, and the first area is not equal to the second area.

The invention provides an encryption and decryption method and system based on a national and cryptographic hybrid algorithm, and the method comprises the steps: carrying out the signing calculation of to-be-encrypted data through a first end, and obtaining a first message signature; performing symmetric encryption calculation on the to-be-encrypted data through a symmetric encryption algorithm to obtain a first ciphertext; performing asymmetric encryption calculation on the first message signature through an asymmetric encryption algorithm to obtain a second ciphertext; an access request is initiated to the second end, and the second end receives a request parameter sent by the first end and performs decryption calculation on the second ciphertext through an asymmetric encryption algorithm to obtain a first message signature; performing decryption calculation on the first ciphertext through a symmetric encryption algorithm to obtain to-be-encrypted data; when the first message signature is complete, processing the to-be-encrypted data to obtain return data; and the returned data ciphertext is sent to the first end, so that the problem that data transmission is easily attacked and tampered is solved, and the data security is improved.

The application provides a power distribution transformer noise testing device and method, comprising a first capacitor group, one end of which is connected with a voltage divider, and the other end of which is connected with a power supply; a second capacitor group, one end of which is connected with a first end of the power distribution transformer to be tested, and the other end of which is connected with a current transformer; the other end of the power supply is connected with the voltage divider, and the two ends of the voltage divider are respectively connected with a second end and a third end of the power distribution transformer to be tested; and the other end of the current transformer is connected with a fourth end of the power distribution transformer. The application adopts the capacitor group to compensate the inductance of the primary and secondary sides, improves the power factor of the experimental circuit, realizes the noise testing of the power distribution transformer under the rated working condition (voltage and current), and reduces the requirement of the experimental circuit on the power supply capacity.

The invention discloses a well drilling energy storage system control method, which comprehensively manages a generator set and an energy storage device, and realizes generator set operation parameter acquisition, generator automatic start-stop control, impact load potential energy recovery, and generator operation power control and scheduling. The problems that a large motor set for well drilling is high in investment, low in fuel oil utilization rate and serious in air pollution are solved.