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267results about How to "Increase operating frequency" patented technology
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Ring bus structure and its use in flash memory systems
ActiveUS8375146B2Reduce capacitanceIncrease working frequencyMultiple digital computer combinationsElectric digital data processingSystem controllerBus
A system and integrated circuit chips used in the system utilize a bus in the form of a ring to interconnect nodes of individual components for transfer of data and commands therebetween. An example system described is a memory having one or more re-programmable non-volatile memory cell arrays connected to each other and to a system controller by a ring bus.
Owner:SANDISK TECH LLC
Enhancement mode III-nitride switch with increased efficiency and operating frequency
ActiveUS20090278513A1Improve efficiencyIncrease operating frequencyTransistorSolid-state devicesSchottky diodeNitride
According to one exemplary embodiment, an efficient and high speed E-mode III-N / Schottky switch includes a silicon transistor coupled with a D-mode III-nitride device, where the silicon transistor causes the D-mode III-nitride device to operate in an enhancement mode. The E-mode III-N / Schottky switch further includes a Schottky diode coupled across the silicon transistor so as to improve efficiency, recovery time, and speed of the E-mode III-N / Schottky switch. An anode of the Schottky diode can be coupled to a source of the silicon transistor and a cathode of the Schottky diode can be coupled to a drain of the silicon transistor. The Schottky diode can be integrated with the silicon transistor. In one embodiment the III-nitride device is a GaN device.
Owner:INFINEON TECH AMERICAS CORP
Rotary magnetic refrigeration device and application thereof
InactiveCN101979937AImprove cooling efficiencyImprove reliabilityEnergy efficient heating/coolingMachines using electric/magnetic effectsThermal insulationMagnetic media
The invention discloses a rotary magnetic refrigeration device. The rotary magnetic refrigeration device comprises a magnetic field source, two active regenerator modules and cold and hot fluid heat exchange channels, and is characterized in that: two packing layers sandwich a magnetic medium in a radial direction so as to form one active regenerator module; the two active regenerator modules are staggered coaxially and axially and arranged at an interval of 180 DEG in the circumferential direction, and pass through an upper half magnetic field region covered with the magnetic field source and a lower half nonmagnetic region alternately when rotating synchronously; A hot fluid channel which is communicated with a high temperature end heat exchanger is statically arranged in the pace of the magnetic field region at the rotating periphery of the active regenerator module; and the cold fluid channel which is communicated with a low temperature end heat exchanger is statically arranged in the space of the nonmagnetic region at the rotating periphery of the active regenerator module, and thermal insulation layers are arranged between the two active regenerator modules in the axial direction, and at the periphery and left and right end faces of the cold and hot fluid channels.
Owner:XI AN JIAOTONG UNIV
Memory control device having less power consumption for backup
InactiveUS20050249011A1Reduce power consumptionIncrease operating frequencyEnergy efficient ICTMemory loss protectionMemory controllerEngineering
When power stoppage of a main power supply is detected during a normal operation, a power controller switches a power supply for a DRAM from the main power supply to a battery power supply and makes an instruction signal for instruction a self-refresh mode to a memory controller active. In response to this, the memory controller changes a clock enable signal for the DRAM to a low level to establish the self-refresh mode of the DRAM, and, after, the self-refresh mode of the DRAM is established, supplying of power to the memory controller is stopped. The clock enable signal for the DRAM is maintained to the low level by pull-down resistance even when the supplying of power to the memory controller is stopped from a condition that the signal is changed to the low level in the self-refresh mode, thereby maintaining the self-refresh mode of the DRAM.
Owner:CANON KK
Liquid Crystal Display Device and Driving Method Thereof, Television Receiver, Liquid Crystal Display Program, Computer-Readable Storage Medium Storing the Liquid Crystal Display Program, and Drive Circuit
InactiveUS20090115772A1Increase working frequencyShorten the timeCathode-ray tube indicatorsInput/output processes for data processingLiquid-crystal displayEngineering
In one embodiment of the present invention, a driving method of a liquid crystal display device is disclosed. According to one embodiment of the present invention a driving method of an active matrix display device is disclosed including: a plurality of source lines; a plurality of gate lines that intersect the source lines; and a plurality of pixel formation sections being disposed in a matrix manner at the respective intersections of the source lines and the gate lines, each of the pixel formation sections receiving as a pixel value a voltage applied to the source line that passes through the corresponding intersection when the gate line that passes through the corresponding intersection is selected, wherein non-image signals are applied to the source lines in each horizontal scanning period, and the gate lines are selected in an effective scanning period, and thereafter the gate lines are selected, in sync with a timing of application of the non-image signals to the source lines, before the subsequent effective scanning period comes after a point in time when the gate lines have been brought into non-selected state.
Owner:SHARP KK
Air conditioner and oil return control method and device thereof
ActiveCN106091479AIncrease operating frequencyIncrease output powerCompressorRefrigeration safety arrangementIndustrial engineering
Owner:GREE ELECTRIC APPLIANCES INC
Method for controlling operating of air conditioner
InactiveCN101495815AIncrease operating frequencyImprove operating conditionsMechanical apparatusSpace heating and ventilation safety systemsEngineeringOperating frequency
A method for controlling a start-up operation of an air conditioner having a compressor and an indoor and an outdoor fan includes the steps of: (a) calculating indoor cooling / heating load; (b) calculating a reference operating frequency of the compressor; (c) driving the indoor and the outdoor fan during a first time period to thereby adjust pressure equilibrium between an indoor and an outdoor pressure; (d) driving the compressor during a preset time period while increasing an operating frequency of the compressor; and (e) setting the operating frequency of the compressor to the reference operating frequency and driving the compressor. The operating frequency of the compressor is increased in a stepwise manner during the preset time period and kept to be lower than the reference operation frequency throughout the preset time period.
Owner:DAEWOO ELECTRONICS CO LTD
Aircraft pose estimation method based on direct method and inertial navigation integration
InactiveCN108036785AIncrease operating frequencySave computing resourcesNavigation by speed/acceleration measurementsEstimation methodsLuminosity
The invention discloses an aircraft pose estimation method based on direct method and inertial navigation integration. The six-degree-of-freedom pose of an aircraft is optimized by visual measurementbased on a direct method, re-projection luminosity errors are minimized, visual measurement is integrated with measurement of inertial navigation components to obtain scales, the aircraft can be accurately positioned for a long time without external aided navigation of GPS (global positioning system) signals and the like, and robustness is good.
Owner:ZHEJIANG UNIV
Multiple detonation initiator for frequency multiplied pulsed detonation combustion
ActiveUS20050279078A1High frequencyIncrease operating frequencyGas turbine plantsIntermittent jet plantsEmbedded systemOut of phase
The present invention is a pulse detonation combustion system, having a plurality of detonation initiation devices coupled to a main combustion chamber, where each of the detonation initiation devices is operating out-of-phase with each other. Each of the detonation initiation devices assists in the initiation of a detonation in the main combustion chamber, out-of-phase from each other such that the operational frequency of the pulse detonation combustion system is related to the number of detonation initiation devices multiplied by the operational frequency of a single detonation initiation device.
Owner:GENERAL ELECTRIC CO
Method and apparatus for reducing memory size and bandwidth
InactiveUS20100274933A1Reduce operating frequencyIncrease operating frequencyEnergy efficient ICTMemory adressing/allocation/relocationMagnetic disksData bits
A solid state disk drive is provided. The solid state disk drive includes a memory device and a controller. The memory device includes memory cells for storing data bits. The controller is coupled to the memory device, accesses the memory device according to a clock signal, estimates a work load of the memory device, and adjusts a frequency of the clock signal in accordance with the estimated work load.
Owner:MEDIATEK INC
Method of forming distributed energy storage system by small hydropower cluster
ActiveCN106099960ALow costReduce construction difficultySingle network parallel feeding arrangementsHydro energy generationWater turbinePower grid
The invention discloses a method of forming a distributed energy storage system by a small hydropower cluster. The method comprises steps: a total net load value PLj(t) of all small hydropower stations at a tth time in an energy storage cycle T is acquired; according to an optimization objective, the total net load value PLj(t) and planned load pi(t) of an ith small hydropower station, the actual load pfci(t) of the ith small hydropower station is acquired; and according to the actual load pfci(t) of the ith small hydropower station, optimal efficiency control is carried out on a water pumping and water storing device of the ith small hydropower station, and the ith small hydropower station is made to operate under the optimal efficiency according to the actual load pfci(t), wherein the water pumping and water storing device is a hydraulic turbine, a water pump or a reversible hydraulic turbine. Through carrying out improvement on the small hydropower stations and using an energy management unit to manage the small hydropower stations in a unified mode, the multiple small hydropower stations can form a large energy storage system capable of power generation and energy storage, the problems of the operation efficiency and the utilization of the small hydropower stations can be solved, and the regulation capability of the power grid is improved.
Owner:HUAZHONG UNIV OF SCI & TECH
Broadband optical isolator using phase modulators and mach-zehnder interferometers
InactiveUS20140334764A1Increase operating frequencyReduce complexityOptical light guidesNon-linear opticsBeam splitterMach–Zehnder interferometer
Optical devices that do not employ magneto-optics materials or non-linear effects to achieve non-reciprocal light propagation. The optical devices are compatible with the fabrication of monolithic photonic integrated circuits such as silicon-on-insulator planar lightwave circuits. In particular the devices use demonstrated passive (beam-splitters, waveguides) and active (phase modulators) components to achieve non-reciprocal light propagation. The devices can be used as non-reciprocal optical modulators or optical isolators when driven by a periodic radio frequency (RF) electric source.
Owner:NOKIA SOLUTIONS & NETWORKS OY
Control method used for frequency adjusting of air condition compressor and air conditioner
ActiveCN110057060AIncrease operating frequencyAvoid oscillationMechanical apparatusSpace heating and ventilation safety systemsEngineeringFrequency regulation
Owner:CHONGQING HAIER AIR CONDITIONER CO LTD +2
Optical micro-actuator, optical component using the same, and method for making an optical micro-actuator
InactiveUS20040091201A1Minimize the numberIncrease working frequencyCoupling light guidesOptical propertyMicro actuator
The present invention relates to an optical micro-actuator comprising a cavity (30) formed between at least one optical input channel (12, 12a, 12b) and at least one optical output channel (14, 14a, 14b), the cavity being capable of containing at least one first optical fluid and one second optical fluid (32, 33, 34, 35), with different optical properties, and means of modifying the position of an interface between the first and second optical fluids with respect to the optical channels. According to the invention, the means of modifying the position of the interface comprise at least one chamber containing at least one fluid in fluid contact with the cavity, and means of modifying the volume of the chamber. Application to making optical switches and mixers.
Owner:COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Encoder convenient for LDPC long code implementation on FPGA and encoding method
ActiveCN101489135ASave resourcesLow design complexityError correction/detection using convolutional codesError correction/detection using multiple parity bitsMatrix groupApplication Context
The invention relates to a coder for conveniently implementing a LDPC long code in an FPGA and a coding method. A LDPC coding module receives uncoded data output from a ping-pong buffer group input module and a check matrix output from a Synchronous Dynamic Random Access Memory (SDRAM) check matrix group module, obtains a parity matrix check code after a coding operation, outputs the code to a coding output buffer module for a code rate match, transmits the matched parity matrix check code with a certain length to an interleaving module in the LDPC for a bit combination and a bit interleave and outputs the interleaved coding data. The technical scheme of the invention has advantages of less hardware source, low design complexity, high operation frequency, easy implementation and high reliability, and flexibly implements different application environment demands according to the actual utilization demands and the hardware source conditions.
Owner:SPACE STAR TECH CO LTD
Power control device and method for air conditioner
InactiveCN1502913AImprove efficiencyReduce loadSpace heating and ventilation safety systemsLighting and heating apparatusPower conditionerElectric consumption
The present invention relates to an air-conditioner power control device capable of atilizing network to control electric consumption of air-conditioner so as to raise utilization efficiency of power and its control method. Said control device can utilize power value received by network to change the work load of product, and the change of work load of the product can be implemented by changing rotation work frequency of compressor, i.e. when the electric consumption is high, the work frequency of compressor can be reduced to reduce electric consumption, and when the electric consumption is low, the work frequency of the compressor can be raised so as to raise performance of the product.
Owner:LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
Refrigerating control method and device for air conditioner
InactiveCN107084475AShorten the durationIncrease operating frequencySpace heating and ventilation safety systemsLighting and heating apparatusEngineeringElectrical and Electronics engineering
The invention discloses a refrigerating control method for an air conditioner. The refrigerating control method comprises the following steps: obtaining temperature difference between indoor environment temperature and set temperature in a timed mode after the air conditioner enters a refrigerating mode; improving operation frequency of the air conditioner when temperature difference is greater than first preset temperature difference, and duration of refrigerating operation of the air conditioner is greater than preset duration; and controlling the air conditioner to operate according to improved operation frequency, so that the air conditioner is in a quick refrigerating mode. The invention further discloses a refrigerating control device for the air conditioner. When the temperature difference is greater than first preset temperature difference, and duration of refrigerating operation of the air conditioner is greater than preset duration, operation frequency of the air conditioner is improved; and the air conditioner is controlled to operate according to improved operation frequency, so that duration for reaching the set temperature of the air conditioner is reduced.
Owner:GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
Method for controlling refrigeration of variable frequency air conditioner
ActiveCN107781945AReduce energy consumptionIntelligently adjust the air volumeMechanical apparatusSpace heating and ventilation safety systemsFrostTemperature difference
The invention provides a method for controlling refrigeration of a variable frequency air conditioner. The indoor air conditioner comprises two evaporators connected in parallel, two draught fans corresponding to the two evaporators and two air blowout units corresponding to the two draught fans respectively. Each air blowout unit includes at least one air outlet. The refrigeration control methodconsists of the steps that the indoor target temperature Ta, the interior environmental temperature Tb, the outdoor environmental Tc and the coil pipe temperature of two evaporators should be detectedwhile the air conditioner is operating in a refrigeration mode, wherein the lower value of coil pipe temperature is marked as Td; the on-or-off state of the two draught fans is detected; the operating frequency of compressors is determined by Td temperature range and the value of Ta, Tb, Tc if both draught fans are in service; and the operating frequency of compressors is decided by temperature difference range of Tb, Ta and the value of Ta, Tb, Tc if only one draught fan is on. The method not only makes air conditioners capable of meeting the cooling needs, but also protects the evaporatorsfrom frost by controlling the operating frequency of compressors accurately.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
Semiconductor device and method of fabricating the same
ActiveUS20110303951A1Increase currentReduce power consumptionTransistorSemiconductor/solid-state device manufacturingPower semiconductor devicePower flow
The present application discloses a semiconductor device and a method for manufacturing the same. The semiconductor device comprises a semiconductor substrate; a first semiconductor layer on the semiconductor substrate; a second semiconductor layer surrounding the first semiconductor layer; a high k dielectric layer and a gate conductor formed on the first semiconductor layer; source / drain regions formed in the second semiconductor layer, wherein the second semiconductor layer has a slant sidewall in contact with the first semiconductor layer. The semiconductor device has an increased output current, an increased operating speed, and a reduced power consumption due to the channel region of high mobility.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI
Frequency optimization using useful skew timing
ActiveUS8539413B1Increase operating frequencyHuge impact on powerComputer aided designSoftware simulation/interpretation/emulationEngineeringClock signal
A circuit analysis tool is provided for optimizing circuit clock operating frequency using useful skew timing analysis. The instructions supply clock signal with an optimized operating frequency. A first gate signal input slack time is determined with respect to the clock signal to the first gate. If the first gate signal input has a negative slack time, a delay is added to the first clock signal. A second gate signal input slack time is determined with respect to the clock signal to the second gate. If the second gate signal input slack time is negative, a delay is added to the second clock signal necessary to create a second gate signal input positive slack time. In response to the first and second gate signal input positive slack times, it is determined that the circuit successfully operates at the clock optimized operating frequency.
Owner:AMPERE COMPUTING LLC
Electrically-driven high-speed turnout reversing device
ActiveCN102815529AIncrease operating frequencyLow roughness requirementsConveyor partsElectricityCross connection
The invention relates to a slider type sorting machine, particularly relates to an electrically-driven high-speed turnout reversing device for the slider type sorting machine, and belongs to the technical field of logistics equipment. The electrically-driven high-speed turnout reversing device is characterized in that one end of a strip shifting fork is fixed to a cross joint of two guide rails through a rotary shaft, the other end of the strip shifting fork can be electrically driven in arc movement along the rotary shaft to shift back and forth between two guide grooves, and an electromagnetic solenoid driving mode is adopted by a shifting fork driving device. By means of electrical driving, single-time shifting fork reversing action can be completed in 8ms which is much lower than air cylinder action time of 30ms. The strip shifting fork in arc movement along the rotary shaft instead of linear movement can greatly reduce operating amplitude, improve reversing efficiency and increase conveying speed; the requirement on roughness of the contact face of the shifting fork with a rail can be lowered, and safety reliability of equipment is greatly improved; and air source compression is not needed, and utilization cost and maintenance cost of the equipment can be reduced.
Owner:SHANGHAI DAMON LOGISTICS TECH
Oversampling method for data signal and oversampling apparatus thereof
ActiveUS20140375365A1Improve stabilityIncrease operating frequencyPulse automatic controlPulse shapingEdge detectionData signal
An oversampling method for data signal includes oversampling data strobe signal and data signal according to sampling phases to generate first and second sampling results, performing edge detection on the first and second sampling results to obtain first and second edge positions where edges are detected, calculating and storing first offset according to the first edge position and the corresponding second edge position when the second edge position are obtained, using first offset obtain in a previous sampling cycle as the first offset in a current sampling cycle when the second edge position aren't obtained, calculating first sampling point according to the first edge position; calculating second sampling point according to the first sampling point and the corresponding first offset, and selecting and outputting the corresponding second sampling results according to the second sampling point.
Owner:REALTEK SEMICON CORP
Cooling and dedusting method of gearbox lubricating and cooling system
ActiveCN104534072AEnergy savingSolve the insufficient utilization of cooling areaGear lubrication/coolingAutomatic controlChiller
A cooling and dedusting method of a gearbox lubricating and cooling system comprises the following steps that S1, the gearbox lubricating and cooling system is assembled; S2, the speed of an oil pump motor is regulated in the starting or running process; S3, dust and oil films bonded on a cooler and a cooler fan are removed. According to temperature information fed back by mounting in an oil tank of a gearbox, PID automatic control is carried out over the running frequency of the oil pump motor and a fan motor so that a frequency converter can control the running speed of the fan and the running torque of the oil pump motor. In the starting and running process of the oil pump motor, the oil pump motor is made to be started smoothly according to the temperature and viscosity condition of lubricating oil, and the aim of saving energy under the working condition of high temperature is achieved.
Owner:DALIAN SHINERGY SCI & TECH DEV
Organic semiconductor orientation composition, organic semiconductor orientation film, organic semiconductor element and method for manufacturing same
ActiveCN102079876AEasy to moveImprove heat resistanceSolid-state devicesSemiconductor/solid-state device manufacturingHeat resistanceOptical orientation
The invention relates to an organic semiconductor orientation composition, an organic semiconductor orientation film, an organic semiconductor element and a method for manufacturing same. The aim of the invention is to provide an organic semiconductor orientation composition for forming an organic semiconductor orientation film. The stability of the carrier mobility of high heat-resistance can be realized by the orientation film excellent in optical alignment sensitivity. Meanwhile, excellent carrier mobility of organic semiconductor molecules at high levels in different directions can also be realized. The invention discloses an organic semiconductor orientation composition of polyorganosiloxane compound comprising an optical orientation group [A]. The optical orientation group is preferable a group comprising a cinnamylate structure. The group comprising the cinnamylate structure is selected from at least one of the group composed of the compositions illustrated as the formula (1) and the formula (2).
Owner:JSR CORPORATIOON
Game operating environment accelerating system
ActiveCN108261763ASave memory spaceIncrease the operating frequencyVideo gamesData switching networksNetwork linkOperating environment
The invention provides a game operating environment accelerating system. The system comprises an initialization module, a network agent selection module, a terminal state adjustment module, a data takeover module and a circulation module, wherein the initialization module is used for initializing a game accelerator and starting a game state monitoring loop; the network agent selection module is used for triggering an operation environment adjustment and optimization mechanism when a game is started and selecting the optimal network agent scheme; the terminal state adjustment module is used forthrowing monitoring loops of a memory and a CPU (central processing unit) after a first data packet of the game is sent out to monitor the operating state of the memory and the CPU of terminal equipment in real time and dynamically adjusting the memory and the CPU according to the monitoring result; the data takeover module is used for monitoring network data transmission data in real time in thegame operation process, performing dynamic optimization and configuration on network links according to the monitoring result and transmitting game data packets by use of multiple links; the circulation module is used for circulating the execution process of each module. According to the provided technical scheme, the game can operate in the optimal environment.
Owner:SICHUAN SUBAO NETWORK TECH CO LTD
DC to DC transformer and control method for reducing overshooting phenomenon
ActiveCN101483386AIncrease operating frequencyFast switching speedDc-dc conversionElectric variable regulationDc transformersPulse wave
The present invention discloses a DC to DC converter, which comprises: a control circuit used for receiving and comparing DC output pressure, and outputs pulse wave width modulation signal of the first frequency when the DC output pressure no more than the first threshold voltage, and outputs pulse wave width modulation signal of the second frequency when the DC output pressure more than the first threshold voltage and the second frequency higher than the first frequency; a gate drive circuit used for receiving pulse wave width modulation signal and converting it into the first drive signal and the second drive signal; and a power stage circuit used for converting DC input pressure into DC output pressure according to the first drive signal and the second drive signal.
Owner:ASUSTEK COMPUTER INC +1
Real time self-adapting processing method of image mobile imaging
InactiveCN101276463AEasy to removeMeet real-time requirementsImage enhancementImage analysisRelative motionMethod of images
The invention discloses a real time self-adapting processing method of anastigmatic imaging, which is a real time self-adapting processing method of anastigmatic imaging in a high-speed movement small-object imaging system. According to the method, small objects in high-speed movement can be automatically searched and found, FPGA and DSP are used as the real time on-line processing platform, an image reinforcement and inter-frame correlation identification algorism with low complexity is adopted, effect of fake objects are removed to obtain movement characteristics of the objects, so as to drive a high-precision two-dimensional piezoelectricity tilting mirror to complete self-adapting movement compensation, thereby realizing clear imaging of the high-speed movement small-objects.
Owner:SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
Apparatus and method for controlling train speed
ActiveCN103057553AGuaranteed uptimeHigh speedAutomatic systemsRoute devices for controlling vehiclesAutomatic train protectionDynamic models
An apparatus and method for controlling train speed are disclosed, the method including receiving an operation data, estimating a future train speed subsequent to a predetermined time of the train, using the operation data and dynamics model of a train, calculating a TTSLC {Time-To-Speed-Limit Crossing, a time when the train exceeds an ATP (Automatic Train Protection) speed limit}, and outputting a deceleration command by determining an additional braking force, in a case the TTSLC is smaller than a predetermined threshold.
Owner:LSIS CO LTD
Control method of refrigerator, control device of refrigerator and refrigerator
ActiveCN104634063AImprove cooling efficiencyExtended service lifeDomestic cooling apparatusRefrigeration safety arrangementControl theoryRefrigerated temperature
The invention provides a control method of a refrigerator, a control device of the refrigerator, and the refrigerator. The method comprises the following steps: detecting the current indoor temperature; judging whether the temperature variation between the current indoor temperature and the preset indoor temperature is greater than or equal to the preset indoor temperature variation or not, if so, adjusting the current running frequency of a compressor of the refrigerator, and / or the current first rotating speed of an outdoor fan of the refrigerator and / or the current second rotating speed of an indoor fan of the refrigerator; otherwise, controlling the compressor to keep the current running frequency, and / or controlling the outdoor fan to keep the current first rotating speed and / or the indoor fan to keep the current second rotating speed. Through the technical scheme provided by the invention, the working states can be adjusted by the refrigerator according to environmental temperatures and other constantly changing situations, and the refrigerator can work under the optimum condition at any time, so that the refrigerating efficiency of the refrigerator is improved, the noise of the refrigerator is reduced, and the life of the refrigerator is prolonged.
Owner:HEFEI MIDEA REFRIGERATOR CO LTD
Voltage short interruption reply method and device of single-phase AC power supply
ActiveCN105024539AImprove immunityReduce operating frequencyEfficient power electronics conversionSpace heating and ventilation safety systemsWork periodPower flow
The invention discloses a voltage short interruption reply method and device of a single-phase AC power supply provided for an air-conditioning system. The single-phase AC power supply goes through rectification of a rectifier circuit and then is input to a power factor correction (PFC) circuit. The method comprises the following steps: detecting a voltage input to the PFC circuit to obtain an input voltage instantaneous value, and judging whether a voltage short interruption occurs in the single-phase AC power supply according to the input voltage instantaneous value; if the voltage short-time interruption occurs according to the judgment, controlling a power switch tube in the PFC circuit to be turned off, and reducing an operation frequency of a compressor; judging whether a voltage of the single-phase AC power supply returns to normal; and, if the voltage returns to normal according to the judgment, improving the operation frequency of the compressor until a given frequency is reached, and, when the input voltage instantaneous value is less than or equal to an output end DC bus voltage of the PFC circuit, controlling the power switch tube to be turned on. So an input current when the voltage recovers is reduced, working time when the voltage interruption occurs is prolonged, and then the anti-interference ability of the system to the voltage short interruption is improved.
Owner:GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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