158results about How to "Adjust output power" patented technology

The invention belongs to the technical field of wind power generation, and particularly provides a power adjusting method and a power adjusting device in a wind farm. The method comprises the following steps of: 1) acquiring an effective power demand value of the wind farm in real time, and taking the effective power demand value as target output power Pr of the wind farm; 2) acquiring the current actual output power P of the wind farm; 3) calculating a power adjusting value of the wind farm according to the current actual output power P and the target output power Pr of the wind farm; 4) determining a power adjusting strategy on the basis of the power adjusting value; and 5) controlling the working state of corresponding fans in the wind farm on the basis of the power adjusting strategy; and repeating the step 2) to the step 5), till the output power of the wind farm meets the power demand of a power grid. In the power adjusting method and the device provided by the invention, the output power of the wind farm can be adjusted in time and accurately, the stability and the safety of the operation of the fans are improved and the labor cost also can be greatly saved simultaneously.

The invention relates to the field of air conditioner control, in particular to an electric heating structure and an air conditioner compressor starting system and method. The electric heating structure comprises an electric heating control system and an electric heating device. The electric heating control system comprises a driving circuit and an electronic switch circuit. The driving circuit is used for adjusting the duty ratio of the electronic switch circuit. The electronic switch circuit is used for adjusting the output power of the electric heating device according to the duty ratio. The electric heating device is used for preheating an air conditioner compressor. According to the technical scheme, the output power of the electric heating device can be adjusted according to the exhaust temperature of the compressor; compared with the method that preheating is conducted by adopting a constant-power electric heating device in the prior art, the heating speed of the compressor is high, and the preheating process safety can be ensured; and accordingly, the starting waiting time of an air conditioner compressor system under a low-temperature environment is reduced, energy consumption is reduced, and meanwhile, the user experience effect is improved.

The invention discloses a photovoltaic grid-connected control method and system based on a wave trap and a proportional resonance controller. The method comprises the steps of: establishing a maximumpower point tracking model, a positive and negative sequence separation model, a current control model and an inverter control model with harmonic suppression, wherein the maximum power point trackingmodel calculates the start or stop of maximum power point tracking according to an input voltage amplitude signal; enabling the positive-negative sequence separation model to calculate positive-negative sequence components of the power grid voltage; enabling the current control model to calculate a power grid active and reactive current reference value according to the power grid voltage amplitude;, wherein the inverter control model comprises a voltage outer loop control model with a wave trap and a current inner loop model adopting a proportional resonance controller added with harmonic suppression control, and calculates an inverter output voltage reference value according to the positive-negative sequence components of the power grid voltage and the power grid active and reactive current reference value. According to the invention, the interference of the harmonic component on the system under the asymmetric fault is solved, and the electric energy quality of the whole photovoltaic grid-connected system in the low-voltage ride through process is improved.

The invention discloses an electronic cigarette, a Bluetooth assembly thereof, and a smoking information acquiring system and method. The electronic cigarette comprises an electronic cigarette body and the Bluetooth assembly, wherein the electromagnetic cigarette body is provided with an atomizing assembly and a battery assembly; the Bluetooth assembly is positioned between the atomizing assembly and the battery assembly; two ends of the Bluetooth assembly are respectively connected with the atomizing assembly and the battery assembly detachably; and the Bluetooth assembly is used for communicating with an external terminal and comprises a microcontroller, a Bluetooth transmitting and receiving module, a voltage detecting module and a current detecting module. The electronic cigarette has the advantages that the electronic cigarette is provided with the Bluetooth assembly, the Bluetooth assembly acquires outputting power information of the electronic cigarette, smoking data of a user and the like through the microcontroller, the Bluetooth transmitting and receiving module transmits the outputting power information of the electronic cigarette, smoking data of the user and the like to the external terminal, and the user knows his smoking conditions through the external terminal; and the user can conveniently adjust the outputting power of the electronic cigarette through the external terminal so as to control smoke amount of the electronic cigarette.

The invention relates to the related technical field of mobile communication coverage, in particular to an elevator mobile communication coverage system and an elevator mobile communication coverage method. The elevator mobile communication coverage system comprises a power controller, an information source antenna, a donor antenna and a retransmission antenna, wherein the input end of the power controller receives information source signals, the output end of the power controller is connected with the information source antenna in a wired mode, and the information source antenna is installed on the top of an elevator shaft; the donor antenna is installed outside an elevator cage of an elevator; the retransmission antenna is installed inside the elevator cage of the elevator; and the information source antenna is connected with the donor antenna in the wired mode. According to the elevator mobile communication coverage system and the elevator mobile communication coverage method, wireless transmission is realized between the information source antenna and the donor antenna, so that installation of equipment is avoided in the elevator shaft, the installation is fast and convenient, the manufacturing cost is low, property coordination is reduced, and the power taking and maintenance difficulty is reduced.

The invention discloses a double-bevel gear differential speed reducing mechanism, and relates to a speed reducing mechanism. The double-bevel gear differential speed reducing mechanism comprises an input shaft part I, a planetary support part, a double-bevel gear I, A double-bevel gear II, a shaft sleeve I, a shaft sleeve II, a retainer ring I, a pin I, a retainer II and a pin II. In the operation process of the speed reducing mechanism, the rotating speed of a planetary support transmission shaft is related to the rotating speed difference of two motors, and has the advantages that the transmission ratio is large, the output torque is large; the two motors can be always in a high-speed running state, under the condition that the rotating directions of the two motors are unchanged, the rotating direction of the planetary support transmission shaft of the speed reducing mechanism can be changed, a load device is driven to realize the functions of running, stopping, and changing the rotating direction of the load device, meanwhile, the speed reducing mechanism can ensure that the motors operate in a high-efficiency working state, and the response speed is increased when the speed reducing mechanism changes the rotating direction of the load device.

A method of self-adaptable adjusting the sending power of the broadcasting station, which is applied to communicate information between a mobile station and a base station when the change of the fast decline and slow decline of a communication signal during the high speed running, according to the recorded values of the sending record queue of the sent groups, calculate the average retransmiting times in order to adjust the output power of the mobile broadcasting station dynamic ally, and then the channels are working in perfect state.

The invention provides a slurry-water balanced horseshoe-shaped shield machine for tunnel construction. The slurry-water balanced horseshoe-shaped shield machine comprises a shield shell, a cutter head set in front of the shell, a slurry circulating system behind cutter heads, shield jacks arranged around the shield shell, a movable double-head segment erector and other auxiliary devices. The operating principle of the slurry-water balanced horseshoe-shaped shield machine is that the cutter head set composed of round cutter heads and specially-shaped cutter heads is used for cutting to form a horseshoe-shaped tunnel; pressure slurry is used for keeping the stability of an excavated surface; a shield tail is provided with three steel wire shield tail brushes, the spaces between the three steel wire shield tail brushes are filled with grease to be sealed, and the last steel wire shield tail brush can be replaced; the tail end of the shield shell is provided with a steel slurry stopping plate inclined in the shield tail direction and used for preventing the slurry from leaking; cut soil bodies are sent to the ground through a slurry outlet pipe, and meanwhile fresh slurry is supplemented through a slurry inlet pipe so as to keep the slurry-water pressure; the movable double-head segment erector is used for assembling arc-shaped segments and non-arc-shaped segments.

The invention provides a permanent magnet synchronous electric drive system. The permanent magnet synchronous electric drive system comprises a permanent magnet synchronous generator, a first conversion device, a second conversion, a permanent magnet synchronous motor, a first detector, a second detector and a controller, wherein the output end of the permanent magnet synchronous generator is connected to the input end of the first conversion device, the output end of the first conversion device is connected to the input end of the second conversion device, and the output end of the second conversion device is connected to the input end of the permanent magnet synchronous motor; the first detector and the second detector are connected to the controller respectively; the first detector is used for detecting direct-current bus voltage and sending the direct-current bus voltage to the controller, the second detector is used for detecting the operational state of load and sending the operation state of load to the controller, the controller is used for sending control signals to the first conversion device and the second conversion device according to the two signals, and the first conversion device and the second conversion device are used for carrying out conversion according to the two control signals so as to adjust output power of the permanent magnet synchronous generator and output power output to the permanent magnet synchronous motor. The permanent magnet synchronous electric drive system can realize unity power factor control.

The invention provides a hot plate air extracting device, which comprises a box body, a hot plate and an air extracting unit, wherein the box body comprises a process chamber; various functional components of the hot plate air extracting device are accommodated into the box body; the hot plate is fixedly arranged in the process chamber through a supporting body; a to-be-processed wafer is arranged on the hot plate; the air extracting unit is electrically connected with the temperature control unit for detecting the temperature in the process chamber and regulates and controls an output power of the air extracting unit according to the detected temperature of the temperature control unit. Through the hot plate air extracting device and the temperature control method thereof, the temperature in the process chamber can be detected in real time; and the output power of the air extracting unit is regulated and controlled to maintain a stable process environment in the process chamber, so that the thickness uniformity of a photoresist, the critical dimension (CD) stability and uniformity and the profile (Profile) stability are achieved.

Provided are a power controllable wireless mobile communication system using an adaptive modulation and coding scheme and a method thereof. The power controllable wireless mobile communication system adopting an adaptive modulation and coding scheme includes a signal-to-noise ratio (SNR) extraction unit, a modulation and coding scheme decision unit, a power control value decision unit and a signal generation unit; the signal-to-noise ratio (SNR) an extraction unit for extracting the SNR from a signal processed and received according to a predetermined modulation and coding scheme; the modulation and coding scheme decision unit for comparing the extracted SNR with a desired SNR required for the received signal, and again determining a modulation and coding scheme that reflects conditions including at least comparison results; the power control value decision unit is used to compare the extracted SNR with the required SNR required for signals of the determined modulation and coding scheme, and determine according to the comparison result Power control value; the signal generation unit is used to insert the field indicating the determined modulation and coding scheme and the power control command field corresponding to the power control value into the data to be transmitted, process the result according to the determined modulation and coding scheme and generate transmit a signal.

The invention discloses a horizontal non-uniform indirect heating rectangular channel flow visualization test apparatus. The apparatus consists of a flow channel body module, a power loading module and a clamping fixing module. By conveniently adjusting an output power of each electric heating element, horizontal heat flow distribution with different forms is realized according to research needs. The test apparatus can be used to carry out a flow visualization test research of a rectangular narrow-slit flow channel under horizontal non-uniform heat flow working conditions, influences of thermal parameters such as pressure, temperature, flow volume and horizontal heat load distribution, and corresponding geometric parameters on flow characteristics in the narrow-slit channel are studied, and corresponding bubble dynamic characteristics and flow pattern transition criteria are obtained. At the same time, the test apparatus can obtain detailed flow field and temperature field information by combining with advanced measuring equipment and testing means. In addition, the test apparatus is designed with the reasonable clamping fixing module to ensure that the test apparatus can be operated within a wide range of thermal parameters to meet test working condition demands of different engineering under practical application backgrounds.

The invention relates to an intelligent control system of an air-cooled screw air compressor, which is connected with an air compressor system and a user centralized control system, and comprises a PLC programmable logic controller, a fan frequency converter, a temperature sensor, a pressure sensor and a touch screen. The temperature sensor and the pressure sensor are connected with four paths of analog quantity input modules through shielded cables, and then are connected with a CPU central control unit. The PLC is connected with the four paths of the analog quantity input module; the first path of the analog quantity input module is connected with the fan frequency converter through a shielded cable; the frequency converter is connected with a fan motor of the air compressor system; the second and third paths of the analog quantity input modules are respectively connected with a compressor unit protective device; and the four path of the analog quantity input module is connected a compressor motor. The intelligent control system realizes the functions of settable user pressure control, PID closed-loop control of a cooling fan, switching of manual and automatic control functions, setting of control parameters on a display screen, displaying of measurement parameters and alarm parameters on the display screen, communication meeting standard communication protocol requirements, and the like.

The present invention relates to a high frequency power amplifier adopting the switching-driver EFTs. Said frequency power amplifier is provided with a plurality of amplifiers connected in parallel, the amplifiers including switching-driven FET's. A fixed drain voltage is applied to one amplifier and variable drain voltage is applied to another amplifier through a section including a DC-DC converter or the like that converts the voltage according to a control value of a control signal. The turning on and off of the operation of the power amplifier is controlled by a control signal. Also, the circuit constants of a matching circuit are variable. In a high output power region, the power amplifier is turned on and in a low output power region, turned off. Thereby, the decrease of efficiency of the power amplifier, owing to the DC-DC converter, may be suppressed to a minimum. The matching of the amplifier is adjusted when the power amplifier is switched on or off so as to improve efficiency. Consequently, it becomes possible to continuously control the output of the amplifier.

The present invention discloses an electric vehicle. The electric vehicle comprises a motor, an angle transducer and a controller, wherein the angle transducer is connected with the motor; when the electric vehicle travels on a first road face at a first speed, a first gradient of the first road face is obtained through the angle transducer; when the electric vehicle travels on a second road face, a second gradient of the second road face is obtained through the angle transducer; the second gradient and the first gradient are compared to see if being equal; and if not, output power of the motor is adjusted, so as to enable the electric vehicle to travel on the second road face at the first speed.

The invention discloses a multicoil switching wireless power transmission coupling device. The multicoil switching wireless power transmission coupling device comprises an alternating-current voltage source, a rectifier, an inverter, a switch group, a coupler, a load, a grating sensor, a receiving end controller, a transmitting end controller and a combined logic circuit, wherein the alternating-current voltage source, the rectifier, the inverter, the coupler and the load are sequentially connected in series, the grating sensor is connected with the receiving end controller, the receiving end controller is connected with the transmitting end controller in a wireless communication mode, the transmitting end controller is connected with the combined logic circuit, the combined logic circuit is connected with the switch group, and the switch group is connected with the coupler. The transmitting end controller can accurately switch a working coil at the transmitting end of the coupler to a region over against the receiving end, accurately adjust the horizontal position diverge degree between the transmitting end and the receiving end of the coupler and control the conducting angle of a switch device in the inverter to accurately control output power of the inverter. The invention further discloses a control method of the multicoil switching wireless power transmission coupling device.

The invention provides a booster bicycle and a speed change device thereof. The speed change device comprises an electronic control unit, a power supply unit, a motor unit, a speed change unit and a sensing unit. The power supply unit is used for providing electric energy. The sensing unit is used for acquiring movement signals of the bicycle. The movement signals comprise treading frequency signals and torque signals. The electronic control unit is used for outputting gear information to the speed change unit according to the movement signals and a movement mode preset by a user in order to adjust gears of the speed change unit, and outputting boosting information to the motor unit in order to adjust the output power of the motor unit. The speed and assistance of the bicycle can be adjusted according to the movement mode set by the user, multiple riding requirements of the user in different road environments are met, and the riding experience of the user is improved.

The invention relates to a power control method for a coal mining machine based on touch technology of a magneto-rheological valve and a complete operating handle device. The method is realized by the following steps: (1) extracting output current signals of a cutting motor in a coal mining machine set, and sending the output current signals to a control computer; (2) processing the output current signals in the control computer, and converting the output current signals into control signals through D / A conversion to adjust a current controller; (3) using the output current of the current controller to adjust the current of magnet exciting coils in a magneto-rheological device; (4) setting an operating handle and a moving piston in the magneto-rheological device into fixed connection and synchronous movement to form a state that an operator directly feels the change of the output power in the coal mining machine set during resistance change by means of the operating handle; and (5) quickly adjusting the output power of a pulling motor in the coal mining machine set by means of the pushing and pulling operations of the operating handle so as to stabilize a constant power working state of the coal mining machine set.

The invention discloses a power supply control method. The method comprises the steps: when a PSU has a fault in a power supply system, determining a power compensation value of each PSU without a fault; converting the power compensation value into a target voltage value of each PSU; and finally, adjusting the output voltage value of each PSU without the fault to a corresponding target voltage value. Even if a faulty PSU exists, the output power of each PSU can be adjusted by adjusting the output voltage of each fault-free PSU, so that the three-phase output power is equal, namely, three-phaseload balance is realized, the influence on stable operation of a power grid is eliminated, and potential safety hazards are eliminated. The invention further discloses a power supply control device and equipment and a computer readable storage medium, which have the same beneficial effects as the power supply control method.

The invention discloses a control method based on a backup power system of a fuel cell, which comprises the following steps that: 1) the state of an external power supply is judged through detecting two parameters of the backup power system, i.e. battery current and bus voltage; 2) when the external power supply is detected to be power-off, the battery pack in the backup power system powers up external electric equipment, the fuel cell system in the backup power system is promptly prepared to be started, and the time to start the fuel cell system is determined according to the magnitude of the discharge current of the battery; and 3) when the fuel cell system is needed, the power output to the external electric equipment is controlled through regulating the rotating speed of the fan in the fuel cell system. Therefore, each functional module of the backup power system with the fuel cell system as the core can organically and efficiently operate, thereby improving the efficiency.

The invention provides a compressor, a control method of the compressor and an air conditioning unit. The compressor comprises a cylinder module and a motor module. The cylinder module comprises a first cylinder and a second cylinder arranged in parallel or in series; and the first cylinder is provided with a normal working state and an unloading working state. The motor module comprises a motor piece, and a winding control piece electrically connected with the motor piece; the motor piece is connected with the cylinder module, and is used for driving the cylinder module to operate; and the winding control piece is used for controlling the electrification winding number of each phase of windings of the motor piece. Through the technical scheme, the compressor can achieve a wider frequency operation range, meanwhile, can achieve the better energy efficiency in all frequency bands under the precondition of minimizing the refrigeration output quantity, is quick and stable in switching, saves the electricity, improves the comfort, and prevents the cold waste.

The invention provides a radioactive photoelectric conversion battery which is lower in energy consumption and processing cost and is capable of adjusting output power. The radioactive photoelectric conversion battery that the invention relates to is used for converting radiant energy of a radioactive source to electric energy, and is characterized by having a radioactive source accommodating cavity formed by a barrel in a surrounding manner and used for accommodating the radioactive source; a solar cell panel used for converting radiant energy to electric energy; and a metal plate used for generating positive charges through induction when radiant energy acts on the solar cell panel, wherein the solar cell panel covers the radioactive source accommodating cavity, the metal plate covers the solar cell panel, the metal plate and the solar cell panel are insulated from each other, the radioactive source accommodating cavity has a cavity body and a center shaft part movably accommodated in the cavity body, the center shaft part is used for fixing the radioactive source and moving back and force in the cavity body, an anti-radiation layer is arranged on the cavity body, and at least one gap is arranged on the anti-radiation layer.

The invention provides a radioactive photoelectric conversion cell with lower power consumption and processing cost and adjustable output power. The radioactive photoelectric conversion cell comprises a radioactive source, a solar cell panel, a metallic board, an adjustable light source, and a housing. The radioactive source is used for releasing radioactive energy. The solar cell panel is used for receiving the radioactive energy. The metallic board is used for inductively generating positive charges when the radioactive energy acts on the solar cell panel. The adjustable light source is used for irradiating and acting on the radioactive source in order to a change in the radioactive energy may adjust light intensity and an output light wavelength. The housing covers the radioactive source, the solar cell panel, the metallic board, and the adjustable light source in a sealing manner. The solar cell panel is arranged between the radioactive source and the metallic board. The metallic board and the solar cell panel are stacked.

The active power control method for multiple magnetron microwave chemical reactor features that programmable active power controller is set in the microwave chemical reactor and connected separately to the magnetrons through relays, so that the magnetrons may operate in different on-off states under the control of the chemical reaction controlling program. In the chemical reaction system and before abrupt temperature raise or suddenly changed microwave energy reflection, the number of magnetrons in use is reduced actively for safe operation of the system. After that, the number of magnetrons in use is increased gradually to raise the power of the microwave chemical reactor. In this way, the output power of the microwave chemical reactor is controlled for smooth change.

The invention relates to a rechargeable intelligent sound box power supply management system. Audio signals received from the outside are amplified and played through a loudspeaker. The charging circuit is used for charging the battery pack module, the switching circuit is used for turning on or turning off the power supply of the intelligent sound box, the boosted circuit boosts the voltage of the battery pack module and outputs the boosted voltage to the power amplifier, and the signal sampling feedback circuit is used for collecting power signals of the power amplifier in real time. The single-chip microcomputer circuit outputs a PWM signal to the charging circuit according to the current of the power input interface, and is used for adjusting the charging current and controlling the charging time of the battery pack module. And meanwhile, the output voltage of the booster circuit is controlled according to the acquired real-time power signal, so that the output voltage changes in real time along with the change of the power amplifier. The power supply management system provided by the invention not only considers the working efficiency of the battery pack module, but also considers the music playing effect of the loudspeaker.

An allocation type solar power grid-connected power generation control method based on the wireless network includes 1, utilizing inverters arranged in solar photovoltaic systems, and collecting the local information of the solar photovoltaic systems; 2, allowing a central controller to calculate the network total allocated power PS; 3, allowing the central controller to transmit the calculated allocated power Pi to the corresponded solar photovoltaic systems, and allowing the corresponded inverters to adjust fresh power points of the solar photovoltaic systems according to the received allocated power Pi; 4, allowing the central controller to detect whether the network state meets optional one of three boundary conditions or not, and calculating fresh power indexes and transmitting to terminal nodes of the solar photovoltaic systems. By the aid of the method, the problems of over voltage, power upstream and fair resource allocation of the existing system are solved.

The invention discloses a power regulation device for solid-state high-frequency induction heating power sources. The power regulation device is connected with a high-frequency inverter and comprisesa main loop control unit, an AC / DC conversion module, a current limiting reactor and DC / DC conversion modules. The main loop control unit, the AC / DC conversion module, the current limiting reactor andthe DC / DC conversion modules are sequentially connected with one another; the AC / DC conversion module comprises a three-phase full-bridge rectification circuit; the DC / DC conversion modules comprisefilter capacitors, bridge inverter circuits, high-frequency transformers and rectification circuits, and the filter capacitors, the bridge inverter circuits, the high-frequency transformers and the rectification circuits are sequentially connected with one another. The power regulation device has the advantages that the turn-on time of switch elements in the bridge inverter circuits can be controlled, the duty ratios of output voltages of the bridge inverter circuits can be controlled, direct-current voltages outputted by the rectification circuits can be regulated, accordingly, output power of the high-frequency inverter can be regulated, and the problems of low power factors of power regulation by the aid of the traditional three-phase full-control rectifier bridge circuits with siliconcontrolled rectifiers (thyristors), severe harmonic pollution on power grids, large voltage reduction volumes of power-frequency three-phase voltage reduction transformers, low efficiency, high cost and the like can be solved by the aid of the power regulation device.

The invention provides a laser treatment system based on an emergent laser detection and correction treatment scheme. The system is characterized by detecting the error between an actual output laserof an operation optical fiber emitting end of a laser treatment instrument and a set laser, correcting the original treatment scheme according to the actual output laser and target position information, and adjusting the output power and time of a laser device, so that the optimization of an operative program is realized, and the operation results of being minimally invasive, precise, accurate andsafe are achieved. The laser treatment system provided by the invention has the technical effects of being stable and reliable, flexible and convenient in device configuration and arrangement and high in applicability; and furthermore, the device is low in processing production cost, and has a higher market promotion value.