143results about How to "Change power" patented technology

A system for dynamically managing and controlling distributed energy resources in a transmission/distribution power grid is disclosed. A plurality of regions within a transmission/distribution power grid is autonomously managed using regional control modules. Each regional control module oversees the management and control of the transmission/distribution power grid and is further associated with a plurality of local control modules that interface with distributed energy resources within a region. Power production and power consumption are monitored and analyzed by the enterprise control module which, upon determining that power consumption within a region does not match power producing capability, dynamically reallocates distributed energy resources throughout the grid keeping the system balance.; Power flow at key nodes within the network are monitored and analyzed by the local control modules, regional control modules, and enterprise control modules with compensating actions taken in the event that system parameter risks violating safety, stability, or operational thresholds.

A stabilized high-voltage power supply is disclosed, having a general setup similar to a pulse-step modulator. The power supply comprises a plurality of DC power modules (40) having their outputs connected in a series configuration. Each power module comprises a DC voltage source (41), a DC-DC converter (42), and an output switching circuit (43). The total output voltage of the power supply is regulated by regulating the DC link voltage at the output of each power module. This is achieved by an appropriate feedback control circuit driving the DC-DC converter of each power module. In this manlier, low output ripple and a rapid response to changes in output current can be achieved. The power supply may be used, e.g., as the cathode power supply of a gyrotron.

This disclosure discloses an apparatus for communicating with a radio frequency identification (RFID) tag, comprising: an apparatus antenna device configured to perform radio communication with a plurality of RFID tag circuit elements including a first RFID tag circuit element and a second RFID tag circuit element; a power control portion; an information obtaining portion configured to obtain information from the first RFID tag circuit element and the second RFID tag circuit element, based on the power controlled by the power control portion; and an association processing portion configured to perform the association processing of tag identification information of the second RFID tag circuit element with tag identification information of the first RFID tag circuit element.

A flight control system for an aircraft receives a selected value of a first parameter, which is either the airspeed or inertial velocity of the aircraft. A primary feedback loop generates a primary error signal that is proportional to the difference between the selected value and a measured value of the first parameter. A secondary feedback loop generates a secondary error signal that is proportional to the difference between the selected value of the first parameter and a measured value of a second flight parameter, which is the other of the airspeed and inertial velocity. The primary and secondary error signals are summed to produce a velocity error signal, and the velocity error signal and an integrated value of the primary error signal are summed to produce an actuator command signal. The actuator command signal is then used for operating aircraft devices to control the first parameter to minimize the primary error signal.

The invention discloses an experimental device for promoting gas flowing with ultrasonic waves. The experimental device comprises a rock core holding unit, a constant-temperature regulating module and an axial load and confining pressure module, wherein a rock core inside the rock core holding unit is connected with a gas gathering and pressurizing module and a vacuumizing module; an ultrasonic loading module is arranged around the rock core holding unit which is connected with a vibration detection module; the experimental device further comprises a measuring and data acquisition module which is used for acquiring the axial load and the confining pressure of the rock core and the pressure and speed at a gas inlet. The experimental device for simulating the gas flowing rules of coalbed methane in immediate vicinity of wellbore under ultrasonic loading is capable of providing different temperatures and experimental conditions under three-axis stress states; ultrasonic fields with different frequencies and different power are respectively loaded in a vertical flowing direction, a down-flowing direction and a reverse flowing direction; impacts of an ultrasonic and mechanical vibration and a thermal effect to the gas flowing can be separated through a water-bath constant-temperature module; an impact of single factors such as mechanical vibration and thermal effect to the flowing can be simulated.

The invention relates to a water agitating surge machine. The water agitating surge machine mainly comprises a motor, a reducer casing, a floating body, vanes and fixing rods, wherein the motor is vertically installed on the reducer casing, the reducer casing mainly comprises a casing body, a reduction gear, a bearing and an output shaft, the output shaft downwards extends through a sealed chamber to drive the floating body to rotate with the vanes, the whole machine floats on the water by the aid of the floating body, and the motor and the reducer casing are fixed by the fixing rods to float on the water without rotation. The floating body is a hollow shell which is formed by blow molding, and the floating body is in a shape of approximate square, approximate rectangle, approximate triangle or circle and the like.

The invention relates to a swelling machine and a manufacturing method of a swelling machine floating body. The swelling machine mainly comprises a motor, a reduction gearbox, a floating body, blades and a fixing rod, wherein the floating body is a hollow shell body, mounting spaces for mounting the blades are arranged on the circumference of the lower part of the floating body, and the blades are arranged in the mounting spaces; the middle part of the upper part of the floating body is sunken, an upper shell and a lower shell of the sunken part are integrated, and the sunken part is provided with a connection space matched with an output shaft; the reduction gearbox is mainly consists of a box body, a reduction gear, a bearing and the output shaft; the fixing rod is arranged on the reduction gearbox, a sealing chamber is arranged at the lower end of the reduction gearbox, the output shaft downwards extends out of the sealing chamber to drive the floating body to rotate together with the blades, and the motor and the reduction gearbox are fixed by the fixing rod to float on the water surface without rotation.

A lens comprises an internal cavity structure formed by dissolution of a soluble insert material. The internal soluble material may dissolve through a body of a lens such as a contact lens in order to form the cavity within the contact lens. The cavity within the lens can be shaped in many ways, and corresponds to the shape of the dissolved material, such that many internal cavity shapes can be readily fabricated within the contact lens. The insert can be placed in a mold with a pre-polymer material, and the pre-polymer material cured with the insert placed in the mold to form the lens body. The polymerized polymer may comprise a low expansion polymer in order to inhibit expansion of the lens when hydrated. The polymer may comprise a hydrogel when hydrated. The soft contact lens material comprises a sufficient amount of cross-linking to provide structure to the lens and shape the cavity.

The invention belongs to the technical field of water treatment, in particular to a filtering device with a filter body adopting flaky filtering materials. The filtering device comprises a flaky filtering assembly, a dredging pipe, a dredging pump, a dolly, a dolly guide rail, a clapboard, an effluent weir and a shell, wherein a water inlet, a water outlet and a vent nozzle are arranged below theshell, the flaky filtering assembly is vertically arranged in the shell, a clear water outlet pipe is arranged at the bottom of the flaky filtering assembly, the effluent weir is vertically fixed at the water outlet near the shell, the clapboard is vertically fixed in the shell and positioned between the flaky filtering assembly and the effluent weir, the dolly guide rail is positioned at the topof the shell, the dolly is positioned on the dolly guide rail and can move on the dolly guide rail back and forth, the dredging pump is fixed below the dolly, one end of the dredging pipe is positioned at two sides of the flaky filtering material assembly, and the other end of the dredging pipe is connected with the dredging pump by a main dredging pipe. The invention adopts valve-free operationsand the light filtering materials, increases the filtering area, reduces the filtering load, has less backwashing water consumption and flexible system collocation and is convenient for increasing treating scale. The invention has the advantages of low energy consumption, small occupying area, simple operation and maintenance, and the like, and has higher purifying efficiency while in integrated application with the generate water treatment technology as well as wide application prospects.

The present invention discloses a full voltage segmented linear constant-current LED drive circuit in an auto switchover mode, comprising a minimum two groups of LEDs in parallel connection in proper sequence and a voltage detection and control circuit used for detection of power voltage; positive terminal of each group of LEDs is directly connected or indirectly connected to the power source via the change-over switch; negative terminal of each group of LEDs is grounded via corresponding control switch; wherein, one group of LEDs comprises a minimum two groups of LED units in series connection in proper sequence; negative terminal of each LED unit is grounded via corresponding control switch; the change-over switch and control switch are connected to and controlled by the voltage detection and control circuit to change inter-group parallel connection mode and ON/OFF of different LED units. The drive circuit according to the present invention can switch over series and parallel connection mode of LED, which can also easily adjust total load current in time according to voltage fluctuation mode, and thereby reduce harmonic distortion, and cater to power factor.

An ultrasonic aspiration operation system capable of being controlled accurately structurally comprises an ultrasonic cutter (1), an ultrasonic handle (2) and a main machine (3). The ultrasonic cutter (1) is used for transmitting ultrasonic vibration. The ultrasonic handle (2) is connected with the ultrasonic cutter (1), converts ultrasonic frequency electrical signals into mechanical vibration, drives the ultrasonic cutter (1) to work, can detect the amplitude of the ultrasonic cutter (1) through a sensing piece, the amplitude is fed back to the main machine in an electrical signal mode, and the negative pressure and the power can be adjusted in a mechanical mode or an electrical signal mode. The main machine (3) gives ultrasonic frequency signals, drives the ultrasonic handle (2) to work, and can receive the amplitude, detected through the sensing piece, of the ultrasonic cutter (1) and adjust the output power according to the signals so as to control the output amplitude accurately.

The invention provides a double axial-flow wind wheel system, comprising a first axial-flow wind wheel (1) and a second axial-flow wind wheel (2); wherein the rotate speed of the first axial-flow windwheel (1) is N1 circle/minute, the number of blade is Z1, and rotating basic frequency F1=Z1XN1/60 Hz; and the rotate speed of the second axial-flow wind wheel (w) is N2 circle/minute, the number ofblade is Z2, and rotating basic frequency F2=Z2XN2/60 Hz. The system is characterized in that the rotating basic frequency between the first axial-flow wind wheel (1) and the second axial-flow wind wheel (2) is in the range of 4-20 Hz. When being used in an outer machine of an air conditioning room with top wind out structure, side wind out structure or oblique upper wind out structure, because the rotating basic frequency between the first axial-flow wind wheel (1) and the second axial-flow wind wheel (2) is from 4 to 20 Hz, the system can change the rotating noise voice pressure and the voice powder of the double axial-flow wind wheel, thereby greatly weakening or completely removing the beat vibration formed by overlapping the rotating noise of the two wind wheels, obviously improving the tone quality of the outer machine system of the double axial-flow wind wheel, effectively preventing the metal plate structure from resonating, and reaching the aim of reducing the vibration and improving the reliability of the whole machine.

A method and apparatus are provided which allow telecommunication equipment to adjust its power consumption. A controller within a telecommunication node uses data to determine whether to reduce the power consumption of components within the node. The data can be real-time data fed to the node or controller, or data read from storage, or both, depending on the particular implementation. Various examples of data and decision-making are given.

The invention relates to an LED street lamp. An LED light source module with a ballast is adopted, and a lamp base is only used for providing a power input interface and fixing the LED light source module. In use, one or more LED light source modules can be mounted on the lamp base according to actual lighting requirements, and the lamp base is used in cooperation with the self-ballast LED light source modules of various specifications, so that the total power of the LED street lamp is changed, different use requirements are met, the use range of the LED street lamp is expanded, and upgrading of the self-ballast LED light source modules is facilitated; in addition, water resistance and anti-creeping treatment and the like are carried out on connections of all components of the LED street lamp, so that the LED street lamp is good in overall waterproof effect, high in protection performance, long in service life, compact in structure, easy to produce and assemble and capable of completely meeting outdoor use requirements of the LED street lamp.

The invention discloses a power adjusting device for a dust collector, which is used for adjusting the power of the dust collector to meet the requirements of different occasions on suction. The power adjusting device consists of a knob, a knob bracket and a rheostat connected with the knob, wherein the power adjusting device is arranged on the side part of a dust collector body; and only a part of the knob is exposed outside the dust collector body. The power adjusting device can allow a user to optionally, conveniently and continuously change the power of the dust collector so as to meet the requirements of different places on the suction of the dust collector, and reduces a needed space, enhances touch effect, improves use convenience, simultaneously increases the rotation radius of the knob and enhances use safety.

An apparatus is provided for measuring a substrate temperature during an etching process, comprising: one or more windows formed in a substrate supporting surface; a first signal generator configured to pulse a first signal; and a first sensor positioned to receive energy transmitted from the first signal generator through the one or more windows. A method is provided for measuring a substrate temperature during an etching process comprising: heating a substrate using radiant energy; pulsing a first light; determining a metric indicative of total transmittance through the substrate when the first light is pulsed on; determining a metric indicative of background transmittance through the substrate when the first light is pulsed off; and determining a process temperature.