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37results about How to "Meet different power demands" patented technology
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Wireless and wired charging switching device of electromobile
ActiveCN103956784AMeet different power demandsReduce shockBatteries circuit arrangementsElectromagnetic wave systemHigh frequency powerControl system
The invention provides a wireless and wired charging switching device of an electromobile. The switching device comprises a power module and a charging module of the electromobile, wherein the power module and the charging module are connected. The power module comprises a power grid, a first control switch, a second control switch, a high-frequency power source, a battery charger and an energy transmitting coil system, wherein the first control switch and the second control switch are respectively connected with the power grid, the high-frequency power source is connected with the first control switch, the battery charger is connected with the second control switch, and the energy transmitting coil system is connected with the high-frequency power source. The charging module comprises a master control system connected with the second control switch, and an energy receiving system connected with an energy transmitting coil, wherein the energy receiving system is connected with a battery through a rectifying and voltage stabilizing system, and the master control system is connected with the battery through a power detection module; the battery charger is connected with the battery, and the control system sends signals to the first control switch and the second control switch. According to the device, wireless charging is combined with wired charging, a user can select a charging mode at will, and the electromobile can be charged more flexibly, more conveniently and faster. Stability of wired charging is achieved, and the effect for reducing impact on the power grid under the wireless charging condition is also achieved.
Owner:STATE GRID CORP OF CHINA +2
Shield cutter rotary drive pressure adapting hydraulic control system of proportional valve controlled energy accumulator
InactiveCN101718200AAvoid energy lossImprove efficiency and reliabilityMechanical apparatusTunnelsImpact energyControl system
The invention discloses a shield cutter rotary drive pressure adapting hydraulic control system of a proportional valve controlled energy accumulator. The system comprises a main hydraulic loop and a pressure adapting loop, wherein the main hydraulic loop consists of a motor, a constant power variable pump, a cartridge valve, a control cover plate, a proportional overflow valve, a one-way valve, an electro-hydraulic reversing valve, a proportional reversing valve, an energy accumulator, a quantitative motor and a speed reducer. The system judges the load characteristic when a cutter cuts a rock mass by detecting the system pressure through a pressure sensor, adjusts the proportional reversing valve according to the preset fuzzy adaptive PID control strategy and the change of a pressure signal, reasonably controls the opening direction, size and duration of the energy accumulator to absorb the load impact under different working conditions, and stores the impact energy reutilized for driving the cutter so as to effectively control the influences of system cavity enlargement and rigidity reduction because the energy accumulator is connected. By adopting the proportional valve controlled energy accumulator, the system can adapt the load impact caused by the complex stratum better, and has better energy conservation and reliability.
Owner:CENT SOUTH UNIV
Control method and device for voltage imbalance of ultrahigh-voltage direct-current power transmission valve groups
The invention discloses a control method and device for the voltage imbalance control of ultrahigh-voltage direct-current power transmission valve groups. The method and the device are used for regulating the valve group voltage of a series circuit consisting of two valve groups of controllable power semiconductors. According to the invention, the two valve groups connected in series and on the rectifying side are respectively equipped with current regulating units, the currents of the valve groups are used as control targets, and the two valve groups are also equipped with voltage correcting units put into use selectively. The voltages of the two valve groups are imbalanced through setting the voltage reference values of the voltage correcting units. The voltages at the two ends of the two valve groups on the inverting side are controlled by voltage regulating units, the voltage reference values of the two valve groups are set to be unequal, and the voltage imbalance running of the two valve groups is realized.
Owner:NR ELECTRIC CO LTD +2
Variable servo valve, power servo valve and variable pump
ActiveCN110307143AAchieve powerRealize the role of displacementPump controlPositive-displacement liquid enginesDisplacement controlEngineering
The invention relates to a variable servo valve, a power servo valve and a variable pump. The variable servo valve comprises a valve body. A power valve and a displacement valve are arranged in the valve body side by side. The power valve comprises a power valve sleeve and a power valve element. The power valve sleeve is arranged in the valve body in the manner of being capable of sliding axially.The power valve element is arranged in the power valve sleeve in the manner of being capable of sliding axially. The power valve comprises a displacement valve sleeve and a displacement valve element. The displacement valve sleeve is arranged in the valve body in the manner of being capable of sliding axially. The displacement valve element is arranged in the displacement valve sleeve in the manner of sliding axially. A feedback rod drives the power valve sleeve and the displacement valve sleeve to move so as to recover balance under the action of feedback force. A control oil port on the power valve sleeve and a control oil port on the displacement valve sleeve communicate with each other. A servo piston large chamber oil port of the power valve sleeve is controlled by the power valve element to communicate with a pressure oil port of the power valve sleeve or communicate with the control oil port of the power valve sleeve. According to the variable servo valve, the power servo valveand the variable pump, the problems that in the prior art, a displacement control device is complex in structure, large in number of parts, difficult to process or disassemble, and high in cost are solved.
Owner:JIANGSU HENGLI HYDRAULIC TECH CO LTD
Propelling system and energy management system and method
ActiveCN105730257AMeet different power demandsReduce energy lossElectrodynamic brake systemsElectric machinesElectricityEnergy management system
The invention relates to a propelling system and an energy management system and method. The energy management system comprises a first electric energy convertor provided with one or more first bridge arm circuits, a second electric energy convertor provided with one or more second bridge arm circuits and a control device. The one or more first bridge arm circuits are electrically coupled with an energy type power source. The one or more second bridge arm circuits are electrically coupled with a power type power source. The control device is used for controlling the first electric energy convertor and the second electric energy convertor to work under at least two following conditions when a traction device is in a drive mode, wherein under one condition, when the positive required power of the traction device is smaller than or equal to the positive threshold power, part of or all the first bridge arm circuits in the first electric energy convertor start to be used, and all the second bridge arm circuits in the second electric energy convertor are forbidden to be used; and under the other condition, when the positive required power is larger than the positive threshold power, part of or all the first bridge arm circuits in the first electric energy convertor start to be used, and part of or all the second bridge arm circuits in the second electric energy convertor start to be used. The invention further provides the energy management method and the propelling system.
Owner:GENERAL ELECTRIC CO
Flexible extensible unitized solar energy cell system
ActiveCN106341083AMeet different power demandsUnitizeEngagement/disengagement of coupling partsPhotovoltaicsElectrical batteryCell system
The invention relates to a flexible extensible unitized solar energy cell system and solves problems of fixed power, small application scope and user operation inconvenience existing in solar energy charging equipment in the prior art. The system comprises multiple solar energy cell units and an energy storage device, wherein the solar energy cell units are provided with cell modules connected through lines and magnetic connectors, the adjacent solar energy cell units are spliced through the magnetic connectors, the cell modules of the solar energy cell units are connected in series, and the energy storage device is spliced with the solar energy cell units through the magnetic connectors to form a power source loop. The system is advantaged in that unitization is realized, expansion can be carried out, the application scope is wide, a magnetic splicing mode is employed, operation is convenient and rapid, a flexible structure is further employed, and the system is convenient to carry.
Owner:浙江尚越新能源开发有限公司
Gravity potential energy storage and power generation system
PendingCN111425363AMeet different power demandsConvenient ascentWind motor with solar radiationWind energy with electric storagePhysicsElectric generator
The invention discloses a gravity potential energy storage and power generation system, and relates to the technical field of energy storage and power generation. The gravity potential energy storageand power generation system comprises a bottom plate, a wind power generation mechanism and a fixed frame, the bottom of the fixed frame is fixedly connected with one side of the top of the bottom plate, the two sides of the top of the inner wall of the fixed frame are fixedly connected with vertical rods correspondingly, the bottom end of each vertical rod is fixedly connected with the top of thebottom plate, the surfaces of the vertical rods are slidably connected with a gravity block, the middles of both sides of the fixed frame are fixedly connected with a supporting plate, the front of the supporting plate is rotatably connected with a movable rod through a bearing, and a gear is fixedly connected with the surface of the movable rod. According to the gravity potential energy storageand power generation system, wind energy and solar energy are used to provide electric energy as the initial energy source for lifting heavy objects and then drive the gravity block to rise through amechanical driving mechanism, power is supplied to a power generator through stable mechanical energy produced by own gravity, the gravity potential energy storage and power generation system is suitable for remote mountain areas and special places and the like, the application range is wide, and different power demands are met.
Owner:王振铎
Double-color-temperature COB hybrid chip device and packaging method of COB system
InactiveCN109671838ASimple structureStepless adjustment of color temperatureSolid-state devicesSemiconductor devicesFunction optimizationEngineering
The invention discloses a double-color-temperature COB hybrid chip device and a packaging method of a COB system. The system comprises a COB system and a control circuit mechanism. The COB system comprises a control circuit board, a chip mechanism arranged on the control circuit board, and a fluorescent glue mechanism covered on the chip mechanism. The fluorescent glue mechanism comprises at leasttwo fluorescent glue units which can be mixed to generate the light, wherein the fluorescent glue units correspond to different light source light colors. The chip mechanism comprises a plurality ofchip units. The control circuit mechanism is electrically connected with the chip units, and the control circuit mechanism is used for outputting working voltage corresponding to input voltage of thecontrol circuit mechanism to the chip units. According to the method provided in the invention, the combination of mixed chips is adopted, and the voltage value of each chip unit is adjusted. Therefore, the stepless adjustment of the double color temperature can be realized, and the function is optimized.
Owner:昆山琉明光电有限公司
Self-powered vehicle speed measurement and overspeed photographing evidence obtaining system
InactiveCN112700656ASolve the problem of energy supplyNovel structureTransmission systemsRoad vehicles traffic controlWireless transmissionRoad surface
The invention relates to a self-powered vehicle speed measurement and overspeed photographing evidence obtaining system which comprises a first energy collection belt, a second energy collection belt and a central control rod, the two energy collection belts are installed at preset positions of a road surface, and the distance between the two energy collection belts is a set value s; each of the two energy collection belts comprises a plurality of fully-sealed power generation units which are connected in series or in parallel. The two energy collecting belts are electrically connected with the central control rod in a wired mode after being connected in series or in parallel, the center control rod is installed at the preset position of a road, a power management module, a center control module and a wireless transmission module are installed in the central control rod, a snapshot camera is installed at the top of the central control rod, and the power management module is electrically connected with the central control module, the snapshot camera and the wireless transmission module, and provides continuous power supply for the central control module, the snapshot camera and the wireless transmission module so as to realize system self-energization; according to the invention, the speed of the vehicle can be monitored, green, environment-friendly and sustainable energy can be provided for the work of the whole system, the self energy supply of the system is realized, and the energy supply problem of the current speed measurement photographing device is solved.
Owner:HUNAN INSTITUTE OF ENGINEERING +1
Efficient solar energy conversion photovoltaic power generation system
InactiveCN110784162AImprove the coordination effectRoll over stabilityPhotovoltaic supportsSolar heating energyMechanical engineeringMaterials science
The invention discloses an efficient solar energy conversion photovoltaic power generation system. The system comprises a bottom plate, a first photovoltaic panel and a second photovoltaic panel, wherein the first photovoltaic panel and the second photovoltaic panel are arranged on the bottom plate. A first connecting block is arranged at a bottom of the bottom plate, an universal wheel is arranged on the first connecting block, a first movable groove is arranged in the bottom plate, a first supporting block is arranged in the first movable groove, and the first photovoltaic panel is movably connected to the first supporting block. A first connecting rod is arranged on a side wall of the bottom plate, a first sliding groove is arranged in the first connecting rod, a first sliding block isarranged in the first sliding groove, and the second photovoltaic panel is rotatably connected to the first sliding block. An air cylinder matched with the second photovoltaic panel is arranged on thebottom plate. Under mutual cooperation of the first photovoltaic panel and the second photovoltaic panel, a photovoltaic panel area with a large area is formed on the bottom plate, a sunlight absorption effect of the efficient solar energy conversion photovoltaic power generation system is improved, a power generation capacity of the power generation system is increased, and various different power utilization requirements are satisfied.
Owner:浙江龙能电力科技股份有限公司
Ultrahigh-speed turbine applicable to high-temperature high-back pressure dry gas seal structure
ActiveCN108005727AMeet different power demandsImprove wear resistanceBlade accessoriesLeakage preventionThermal energyDry gas seal
The invention belongs to the technical field of turbines, and particularly relates to an ultrahigh-speed turbine applicable to a high-temperature high-back pressure dry gas seal structure. The ultrahigh-speed turbine comprises a turbine shaft assembly 1, a dry gas seal assembly 2, a mechanical dynamic seal assembly 3, a shell assembly 4 and a cooling water jacket assembly 5, wherein the turbine shaft assembly 1 penetrates through the shell assembly 4 and is mounted in the shell assembly 4; the dry gas seal assembly 2 is positioned in the shell assembly 4 and is connected with the turbine shaftassembly 1; the cooling water jacket assembly 5 is mounted at the outer part of the shell assembly 4; and the mechanical dynamic seal assembly 3 is mounted in the shell assembly 4 and is connected with the turbine shaft assembly 1. According to the ultrahigh-speed turbine, thermal energy of a liquid can be converted into ultrahigh-speed mechanical shaft power under the action of a special workingmedium.
Owner:BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
Multi-path power supply circuit and device and automatic driving vehicle
ActiveCN112383028AAvoid damageMeet different power demandsArrangements responsive to excess currentElectric/fluid circuitAutopilotReliability engineering
The invention relates to the technical field of automatic driving vehicles, and discloses a multi-path power supply circuit and device and an automatic driving vehicle. The multi-path power supply circuit comprises a first overload protection module, a voltage stabilization control module, a second overload protection module and an output interface module, wherein the first overload protection module is connected with the power supply and the voltage stabilization control module, the voltage stabilization control module is connected with the second overload protection module, the second overload protection module is connected with the output interface module, and the output interface module is connected with corresponding connecting equipment. The first overload protection module and the second overload protection module guarantee the use safety of connecting equipment and power supply voltage, the voltage stabilization control module outputs different power supply voltage in multiplepaths, the output interface module provides multiple paths of voltage output, different power utilization requirements of the connecting equipment can be met, the power supply equipment is prevented from directly outputting large current to whole vehicle equipment when breaking down, and the safety of the multi-path power supply equipment is improved.
Owner:ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
High-power converter circuit topology for offshore wind power
PendingCN110120681ALow costIncrease working voltageSingle network parallel feeding arrangementsWind energy generationThree levelTransformer
The invention relates to a high-power converter circuit topology for offshore wind power. The high-power converter circuit topology comprises a generator, a box transformer and a plurality of converter units. Each converter unit comprises a machine-side converter module and a network-side converter module, wherein the machine-side converter module and the network-side converter module both adopt aneutral-point clamping type three-level topological structure. The plurality of groups of converter units are connected in parallel, wherein the input end of each group of converter units is connected with one winding of a generator stator, and the output end of each group of converter units is connected with a box transformer. The output power of the generator is matched with the group number ofthe input converter units, and the start-stop logic and adjustment power distribution are realized through a power cooperation mode. According to the converter circuit topology, the start-stop logicand power distribution are achieved in the power cooperation mode, the number of groups of the input converter units is determined according to the power output by a generator, and each converter unitcan work independently, and particularly under the fault condition, the converter units can work in a load shedding mode, so the utilization rate is increased, and the power generation loss is reduced.
Owner:浙江日风电气股份有限公司
All-in-one integrated control system for fuel cell vehicle control
PendingCN111845459AMeet different power demandsIncrease output powerBattery/fuel cell control arrangementComplex mathematical operationsConvertersFuel cells
The invention provides an all-in-one integrated control system for fuel cell vehicle control. The system comprises a direct-current voltage stabilization converter, an all-in-one integrated controller, an air compressor controller and a water pump controller. The voltage input end of the direct-current voltage stabilization converter is connected with the high-voltage end of an electric pile of the fuel cell vehicle; the voltage output end of the direct-current voltage stabilization converter is connected with the voltage input ends of the all-in-one integrated controller, the air compressor controller and the water pump controller. An air compressor control signal output end of the all-in-one integrated controller is connected with a control signal input end of the air compressor controller; and a water pump control signal output end of the all-in-one integrated controller is connected with a control signal input end of the water pump controller.
Owner:BEIJING JIUZHOU HUAHAI TECH
Method for balancing parallel output voltage of power supplies and power supply device
The invention provides a method for balancing the parallel output voltage of power supplies and a power supply device. The method comprises that S11) all power supplies in parallel connection are isolated from one another; S12) whether the output voltage needs to be adjusted is determined according to the present output voltages of all the power supplies in parallel connection, if YES, S13) is turned to, and if NO, S17) is turned to; S13) the power supply whose output voltage needs to be adjusted is set as an adjustment object; S14) the adjustment object implements power-constant output; S15) the output current of the adjustment object is increased according to a predetermined rule, so that the present output voltage of the adjustment object is reduced; S16) whether the output voltage needs to be adjusted is determined according to the present output voltages of all the power supplies in parallel connection again, if NO, parallel connection of all the power supplies is recovered and the S17) is carried out; and if YES, the S13) is returned to; and S17) output is carried out according to the present output voltage. The power supplies can be used by being connected in parallel directly, different power requirements of different occasions are met, and the stability of the power supply device is improved.
Owner:SHENZHEN EX LIGHTING TECH HLDG
Solar power generation system
InactiveCN111010066AImprove the coordination effectIncrease light receiving areaPhotovoltaic supportsPV power plantsPhysicsSolar power system
The invention discloses a solar power generation system. The system comprises a bottom plate, a first photovoltaic panel and a second photovoltaic panel, the first photovoltaic panel and the second photovoltaic panel are arranged on the bottom plate, a first connecting block is arranged at the bottom of the bottom plate, universal wheels are arranged on the first connecting block, a first movablegroove is formed in the bottom plate, a first supporting block is arranged in the first movable groove, and the first photovoltaic panel is movably connected to the first supporting block; a first connecting rod is arranged on the side wall of the bottom plate, a first sliding groove is formed in the first connecting rod, a first sliding block is arranged in the first sliding groove, and the second photovoltaic panel is rotatably connected to the first sliding block; an air cylinder matched with the second photovoltaic panel is arranged on the bottom plate; under the mutual cooperation of thefirst photovoltaic panel and the second photovoltaic panel, a photovoltaic panel area with a large area is formed on the bottom plate, the sunlight absorption effect of the solar power generation system is improved, the power generation capacity of the power generation system is improved, and various different power utilization requirements are met.
Owner:何士卓
LED light concentration device and parallel exposure machine
PendingCN107450283ASolve the problem of large light angleReduced maximum scatter anglePhotomechanical exposure apparatusMicrolithography exposure apparatusEngineeringMaterials science
The invention provides an LED light concentration device and a parallel exposure machine and relates to the technical field of exposure machines. The LED light concentration device comprises an LED light source, a first lens, a second lens and a third lens, wherein the first lens, the second lens and the third lens are arranged sequentially and located on the same central axis; the LED light source faces the first lens, scattered light emitted by the LED light source passes through the first lens, the second lens and the third lens sequentially to become uniform parallel light. The technical problem that an LED cannot be applied to the exposure machine due to the fact that light emitted by the LED is scattered in the prior art is solved.
Owner:北京京圳永达科技有限公司
Ultrahigh-speed turbine suitable for high-temperature and high-pressure working medium
ActiveCN108005733AImprove working environmentImprove reliabilityLeakage preventionStatorsCentrifugal pumpMechanical devices
The invention belongs to the technical field of turbines, and in particular, relates to a ultrahigh-speed turbine suitable for a high-temperature and high-pressure environment. The ultrahigh-speed turbine comprises a turbine shaft system module, a high-temperature mechanical sealing module, a low-temperature mechanical sealing module, a shell module and a cooling water jacket module; the turbine shaft system module penetrates through and is mounted in the shell module; the high-temperature mechanical sealing module is positioned in the shell module, and is connected with the turbine shaft system module; the low-temperature mechanical sealing module is mounted in the shell module, and is connected with the turbine shaft system module; and the cooling water jacket module is mounted at the external of the shell module. The ultrahigh-speed turbine can finish conversion from heat energy of a fluid to power of a ultrahigh-speed mechanical shaft under special working medium effect, and is used for driving a generator, a compressor, a centrifugal pump and other rotating mechanical devices.
Owner:BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
A control method and control device for voltage unbalance of UHV DC transmission valve group
The invention discloses a control method and device for the voltage imbalance control of ultrahigh-voltage direct-current power transmission valve groups. The method and the device are used for regulating the valve group voltage of a series circuit consisting of two valve groups of controllable power semiconductors. According to the invention, the two valve groups connected in series and on the rectifying side are respectively equipped with current regulating units, the currents of the valve groups are used as control targets, and the two valve groups are also equipped with voltage correcting units put into use selectively. The voltages of the two valve groups are imbalanced through setting the voltage reference values of the voltage correcting units. The voltages at the two ends of the two valve groups on the inverting side are controlled by voltage regulating units, the voltage reference values of the two valve groups are set to be unequal, and the voltage imbalance running of the two valve groups is realized.
Owner:NR ELECTRIC CO LTD +2
Backup power supply voltage regulation circuit used for construction
InactiveCN108173335APrevent over-dischargeReduce manufacturing costElectric powerPhotovoltaic energy generationStandby powerVoltage regulation
The invention discloses a backup power supply voltage regulation circuit used for construction. The backup power supply voltage regulation circuit comprises a photovoltaic conversion circuit, an undervoltage detection switching circuit, a high-frequency oscillator and a voltage regulation circuit; the photovoltaic conversion circuit is connected with the undervoltage detection switching circuit, the high-frequency oscillator and the voltage regulation circuit; the undervoltage detection switching circuit is also connected with an energy-storage storage battery E; and the high-frequency oscillator is also connected with the voltage regulation circuit. The backup power supply voltage regulation circuit used for construction disclosed in the invention can perform photoelectric conversion by asolar panel for supplying electric energy, and can carry out electric energy storage through the energy-storage storage battery; by virtue of an additional electric quantity detection part circuit, an over-discharge condition can be prevented; a voltage boosting part adopts an oscillation voltage boosting manner, so that a voltage boosting chip structure is omitted; and by adopting a conventionalelectronic element connecting method, the manufacturing cost is lowered, output diversification can be realized, and different power utilization requirements can be satisfied, so that the backup power supply voltage regulation circuit has the advantages of low cost, convenience in use and wide use range.
Owner:吕昊
Method and power supply device for balanced output voltage of power supplies connected in parallel
ActiveCN106411111BImprove stabilityImprove efficiencyPower conversion systemsConstant powerVoltage droop
Embodiments of the present invention provide a method for equalizing the output voltage of parallel power supplies and a power supply device. The method includes: S11, isolating all power supply units connected in parallel from each other; S12, determining whether to It is necessary to adjust the output voltage, if yes, skip to S13, if not, skip to S17; S13, set the power unit whose output voltage needs to be adjusted as the adjustment object; S14, make the adjustment object output constant power; S15, increase the power according to the predetermined rule Increase the output current of the adjustment object to reduce the current output voltage of the adjustment object; S16, determine whether the output voltage needs to be adjusted according to the current output voltage of all power supply units connected in parallel, if not, restore the parallel connection of all power supply units And go to S17, if yes, jump back to S13; S17, output according to the current output voltage. The embodiments of the present invention enable the power supply units to be directly used in parallel to meet different power requirements in different occasions and improve the stability of the power supply device.
Owner:SHENZHEN EX LIGHTING TECH HLDG
Propulsion system, energy management system and method
ActiveCN105730257BMeet different power demandsReduce energy lossElectrodynamic brake systemsElectric machinesElectricityEnergy management system
An energy management system includes a first electric energy converter with one or more first bridge arm circuits, a second electric energy converter with one or more second bridge arm circuits, and a control device. One or more first bridge arm circuits are electrically coupled to the energy-type power supply, and one or more second bridge arm circuits are electrically coupled to the power-type power supply. The control device is used to control the first and second electric energy converters to work in at least two of the following situations when the traction device is in the driving mode: when the positive demand power of the traction device is less than or equal to the positive threshold power, the first electric energy converter is activated Some or all of the first bridge arm circuits and disable all the second bridge arm circuits in the second power converter; when the positive demand power is greater than the positive threshold power, enable some or all of the first bridge arm circuits in the first power converter circuit and enable part or all of the second bridge arm circuit in the second electric energy converter. The invention also provides an energy management method and a propulsion system.
Owner:GENERAL ELECTRIC CO
Distributed energy supply system and its control method based on multi-followers
ActiveCN105751913BEfficient combinationMeet different power demandsOperating modesPropulsion by batteries/cellsPower batteryControl system
The invention provides a multi-follower based distributed energy supply system and a control method therefor, and relates to the field of electric vehicles. According to the system, a fuel supply and acquisition system is connected into a follower set and used for providing a power source for the follower set; and the follower set and a power battery are together connected into a driver control system, the power source is provided for a driver system under the control of the driver control system, then the driver system drives a load to work, and the outputs of the follower set and the power battery are controlled and coordinated through a distributed system energy management unit. According to the system and the control method, one or more followers can be controlled to be effectively combined with the power battery according to power demands to perform optimal distribution of complete vehicle energy demands so as to meet efficient running demand of the energy supply system. The invention furthermore provides the control method for the system. According to the method, the adaptive control can be performed according to characteristics of the distributed energy supply system, so that the finiteness of a single-follower scheme in efficiency optimization is overcome.
Owner:ZHEJIANG GEELY HLDG GRP CO LTD +1
Paid solar power generation system based on multi-mode control
InactiveCN110349348AImprove experienceReduce workloadApparatus for hiring articlesPaymentManagement unit
An embodiment of the invention provides a paid solar power generation system based on multi-mode control, and belongs to the technical field of solar power generation. The system comprises a main control management module and a display management unit, wherein the display management unit is used for displaying a mode selection option for a user to select a working mode, and the working mode includes a metering mode and a charging mode; and the main control management module is used for carrying out charging control on solar equipment according to the working mode selected by the user. Due to multiple payment modes and charging modes of the system, the system can adapt to economic conditions and use habits of different regions. In addition, the solar equipment is managed and maintained through the multi-mode control, so that the payment and management of the equipment can be realized. In different charging modes and metering modes, various power utilization requirements of users in different regions or in the same region can be met, so that the workload of operators is reduced, the working efficiency is improved, the user experience is also improved, and different power utilizationrequirements under various complex conditions are met.
Owner:惠州汇能精电科技有限公司
Multi-phase switching converter and integrated circuit control device and control method thereof
PendingCN114679041AFree switching heat balanceMeet different power demandsPower conversion systemsDc-dc conversionControl theoryIntegrated circuit
The invention discloses a multiphase switching converter and an integrated circuit control device and a control method thereof. The multi-phase switching converter comprises a master switching circuit with a first power switch and a plurality of slave switching circuits, and the control method comprises the following steps: receiving a slave temperature signal representing the slave power switch temperature of each slave switching circuit and a first temperature signal representing the first power switch temperature, proportionally integrating the difference between the slave temperature signal and the first temperature signal to provide a corresponding gain; multiplying a slave current signal representing a corresponding slave switching circuit current by the gain to provide a corresponding current feedback signal; proportional integration is carried out on the difference value between the current feedback signal and a first current signal representing the current of the main switch circuit, and corresponding bias is provided; providing a corresponding bias conduction duration signal based on the bias; and superposing the bias conduction duration signal and the first conduction duration signal to respectively generate conduction duration signals corresponding to the slave power switches.
Owner:CHENGDU MONOLITHIC POWER SYST
An ultra-high-speed turbine suitable for high temperature and high back pressure dry gas seal structure
ActiveCN108005727BMeet different power demandsImprove wear resistanceBlade accessoriesLeakage preventionThermal energyUltra high speed
The invention belongs to the technical field of turbines, and particularly relates to an ultrahigh-speed turbine applicable to a high-temperature high-back pressure dry gas seal structure. The ultrahigh-speed turbine comprises a turbine shaft assembly 1, a dry gas seal assembly 2, a mechanical dynamic seal assembly 3, a shell assembly 4 and a cooling water jacket assembly 5, wherein the turbine shaft assembly 1 penetrates through the shell assembly 4 and is mounted in the shell assembly 4; the dry gas seal assembly 2 is positioned in the shell assembly 4 and is connected with the turbine shaftassembly 1; the cooling water jacket assembly 5 is mounted at the outer part of the shell assembly 4; and the mechanical dynamic seal assembly 3 is mounted in the shell assembly 4 and is connected with the turbine shaft assembly 1. According to the ultrahigh-speed turbine, thermal energy of a liquid can be converted into ultrahigh-speed mechanical shaft power under the action of a special workingmedium.
Owner:BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
A wireless and wired charging switching device for electric vehicles
ActiveCN103956784BMeet different power demandsReduce shockBatteries circuit arrangementsElectromagnetic wave systemHigh frequency powerControl system
The invention provides a wireless and wired charging switching device of an electromobile. The switching device comprises a power module and a charging module of the electromobile, wherein the power module and the charging module are connected. The power module comprises a power grid, a first control switch, a second control switch, a high-frequency power source, a battery charger and an energy transmitting coil system, wherein the first control switch and the second control switch are respectively connected with the power grid, the high-frequency power source is connected with the first control switch, the battery charger is connected with the second control switch, and the energy transmitting coil system is connected with the high-frequency power source. The charging module comprises a master control system connected with the second control switch, and an energy receiving system connected with an energy transmitting coil, wherein the energy receiving system is connected with a battery through a rectifying and voltage stabilizing system, and the master control system is connected with the battery through a power detection module; the battery charger is connected with the battery, and the control system sends signals to the first control switch and the second control switch. According to the device, wireless charging is combined with wired charging, a user can select a charging mode at will, and the electromobile can be charged more flexibly, more conveniently and faster. Stability of wired charging is achieved, and the effect for reducing impact on the power grid under the wireless charging condition is also achieved.
Owner:STATE GRID CORP OF CHINA +2
A variable servo valve, a power servo valve and a variable pump
ActiveCN110307143BAchieve powerSimple structurePump controlPositive-displacement liquid enginesEngineeringDisplacement control
Owner:JIANGSU HENGLI HYDRAULIC TECH CO LTD
A flexible and scalable unitized solar cell system
ActiveCN106341083BEasy to useMeet different power demandsEngagement/disengagement of coupling partsPhotovoltaicsSolar cellCell system
The invention relates to a flexible extensible unitized solar energy cell system and solves problems of fixed power, small application scope and user operation inconvenience existing in solar energy charging equipment in the prior art. The system comprises multiple solar energy cell units and an energy storage device, wherein the solar energy cell units are provided with cell modules connected through lines and magnetic connectors, the adjacent solar energy cell units are spliced through the magnetic connectors, the cell modules of the solar energy cell units are connected in series, and the energy storage device is spliced with the solar energy cell units through the magnetic connectors to form a power source loop. The system is advantaged in that unitization is realized, expansion can be carried out, the application scope is wide, a magnetic splicing mode is employed, operation is convenient and rapid, a flexible structure is further employed, and the system is convenient to carry.
Owner:浙江尚越新能源开发有限公司
Scott magnetic modulation transformer for glass ball production process
PendingCN110600248AGuaranteed three-phase balanceMeet different power demandsTransformers/inductances coils/windings/connectionsVariable inductancesGlass ballAutomatic control
The invention discloses a Scott magnetic modulation transformer for a glass ball production process. The Scott magnetic modulation transformer for a glass ball production process comprises a primary coil, a secondary coil, a magnetic core, a reactance coil connected in series with the primary coil, and a direct-current control coil coupled with the primary coil. According to the invention, the three-phase input and two single-phase output of the Scott magnetic modulation transformer are achieved to ensure the three-phase balance of a power grid, the transformer has the stepless voltage regulation characteristic of a magnetic voltage regulator, two sets of transformers can be independently controlled to guarantee output power requirements, meet different power requirements of the glass kiln, simplify gear shifting operation, improve process precision, be matched with automatic control and achieve constant-current or constant-temperature control.
Owner:江苏新特变科技股份有限公司
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