78results about How to "Increase maximum power" patented technology

The invention relates to the wireless communication field, disclosing a method and system of power distribuiton between carriers in the same power amplifier, solving the problem that loads between carriers are unbalanced. On the condition that a power amplifier simultaneously bears at least two carriers in the same sector, if one carrier is in low load state for long, reducing its maximum power and lending the reduced power to at least one other carrier; before lending, able to judge whether loads of other carriers are in over load state, lending the reduced power to other carriers in over load state; if the first carrier is in heavy load state for long after lending, taking back the lent power.

The invention discloses an efficient and compact pre-cooling heat exchanger for a pre-cooling gas sucking type engine. The efficient and compact pre-cooling heat exchanger for the pre-cooling gas sucking type engine comprises a pre-cooling heat exchanger body in the shape of a similar cylinder; the cross section of the similar cylinder is in the shape of a ring different in diameter; the longitudinal section of the similar cylinder is formed by two symmetrically arranged arc segments; the center angle of each arc segment is 45 degrees; the pre-cooling heat exchanger body comprises a cold flow outlet pipe, a cold flow inlet pipe and a plurality of heat exchanging pipes; each heat exchanging pipe is in the shape of an arc; the arc-shaped center angle of each heat exchanging pipe is 45 degrees; and the heat exchanging pipes are distributed into the similar cylinder in a crossed manner. The efficient and compact pre-cooling heat exchanger for the pre-cooling gas sucking type engine can have the engineer realizability on the premise that the heat exchanging effect is guaranteed, so that air incoming flow in front of a gas compressor can be pre-cooled, the high temperature over-running problem of gas compressor blades is solved, the engine thrust is increased, the flight envelop is extended, the welding difficulty is effectively reduced, the frosting blockage problem is effectively solved, the engineer realizability is achieved under the current technology, and after the efficient and compact pre-cooling heat exchanger for the pre-cooling gas sucking type engine is applied to the pre-cooling gas sucking type engine, the engine performance can be substantially improved.

The invention relates to a double-cavity excitation enhanced microwave plasma torch generation device, and belongs to the technical field of microwave plasma. The device comprises a microwave magnetron, a circulator, a directional coupler, a microwave plasma coupling waveguide, a cylindrical waveguide, an igniter and a discharge tube. After the microwave magnetron, the circulator and the directional coupler are sequentially connected in series, the directional coupler is connected with the microwave plasma coupling waveguide. The cylindrical waveguide chamber is additionally arranged in the axial direction of the discharge tube perpendicular to a compression rectangular waveguide; a thermal resistance waveguide in the microwave plasma coupling waveguide effectively isolates the influence of thermal release of plasma discharge on a whole system; the igniter makes the whole system operated by a single person to complete a series of processes of ignition, excitation and maintenance, and the ignition success rate is close to 100% under the condition that the no-load output of a microwave source is low. Plasma torch afterglow with a larger volume action area can be obtained by increasing the maximum power of a plasma torch, so that the device can operate stably and reliably for a long time, and can be used in various relevant fields such as combustion assistance, nano material synthesis, waste gas treatment and high-temperature-resistant material surface modification.

The invention discloses a piezoelectric energy recovery device for recovering vibrational energy, which comprises an energy recovery unit, a system interface circuit unit and an energy storage unit, wherein the energy recovery unit comprises a piezoelectric energy unit and a piezoelectric sensing unit, the piezoelectric energy unit comprises at least one first piezoelectric element adhered to the structural surface, the piezoelectric sensing unit comprises at least one second piezoelectric element adhered to the structural surface, and the system interface circuit unit comprises an ESSH interface circuit unit, an extreme value detection unit, an initial charging circuit unit and a power supply management unit. Compared with the prior piezoelectric energy recoverer, the piezoelectric energy recovery device adopts an ESSH technique in an interface circuit, overcomes the defect that the recovery power changes along with load changes in the prior method of connecting synchronous switch inductors in series, has low power consumption, not only can recover energy in the environment with high vibration level but also can effectively recover energy in the environment with low vibration level, and has broad application prospect in recovering the vibrational energy.

The invention discloses a maximum power tracing method, which is used to detect the output power P of generating equipment which are taken as maximum power tracing objects and the control variable X of the output power, and to determine the relation P (x) between the control variable X and the output power P. Four areas are sequentially formed in the mobility scale [xmin, xmax] of the control variable X by having Xio, X'opt and Xopt as critical points, different interconnected powers Pe are used in each area, and Aopt is used as a clamped point to carry out the interconnected power control. The method is simple and convenient to achieve, strong in capacity of resisting disturbance and helpful to stable control of electric power systems.

The invention provides a method for preparing an antireflective film of a polycrystalline silicon solar cell as well as a polycrystalline silicon solar cell. The method comprises the steps of: passivation layer deposition and density layer deposition. The polycrystalline silicon solar cell comprises: a polycrystalline silicon wafer and the antireflective film located on the surface of the polycrystalline silicon wafer, wherein the antireflective film is made from silicon nitride and comprises a passivation layer and a density layer; and the passivation layer is arranged on the surface of the polycrystalline silicon wafer and the density layer is arranged on the surface of the passivation layer. In the technical scheme provided by the invention, by utilizing the passivation layer in the antireflective film, the surface of the silicon wafer and a substrate can be effectively passivated, the defects such as dislocation, crystal boundary and the like in the surface of a polycrystalline silicon material can be reduced and the carrier lifetime of the polycrystalline silicon material can be prolonged; and by utilizing the formed antireflective film, the photoelectric conversion efficiency of the polycrystalline silicon solar cell can be effectively increased and the maximum power of a cell piece is increased.

The invention provides a stator for an axial clearance type motor and the axial clearance type motor. Stator teeth stator windings are symmetrically arranged on the two end faces of the stator to support the axial clearance type motor to adopt a dual-rotor mode which can make the stress of a rotating shaft balanced, so that improvement in the bearable maximum torque and rotating speed of the axial clearance type motor is facilitated. In addition, a stator slot formed on the stator replaces a collector ring and a cooling shell, so that the structure of the axial clearance type motor can be simplified. Moreover, clearance slots of the stator are equal in width along a radial direction, so that the utilization of air clearances is improved; and chambers are formed at the end part edges of the stator teeth of the stator, so that the dispersion of lines of magnetic force can be suppressed. Therefore, the specific power of the axial clearance type motor can be improved.

The invention relates to a dual-cavity semi-ring surface type power distribution continuously variable transmission which comprises a dual-cavity semi-ring surface type continuously variable unit driven by traction, an ordinary gear train, a two-degree-of-freedom differential gear train and a reversing mechanism, wherein input power is transmitted by two paths, one path of input power is transmitted to a center shaft of the differential gear train from a main shaft, the other path of input power is transmitted to a second gear of the differential gear train through the dual-cavity semi-ring surface type continuously variable unit and the ordinary gear train, and the two parts of power are output through a planet carrier after being converged at the differential gear train. The invention ensures that one part of input torque is born by a second main shaft to reduce the torque born by the dual-cavity semi-ring surface type continuously variable unit, thereby having a capacity of transmitting a large torque. In the design, odd gears in the ordinary gear train are externally meshed, thus, power distribution is realized inside a closed system, and large torque output of the differential gear train is ensured. In order to meet the requirement for advancing and recessing during the operation of engineering machinery, the reversing mechanism is arranged in the dual-cavity semi-ring surface type power distribution continuously variable transmission during the output.

The equipment includes primary winding, secondary winding of transformer, reactive power componsator of electric arc furnace, current transformer, potential transformer and test controller for reactive power, and especially, the secondary self coupled winding. The secondary self-coupled winding formed by adding part of winding to original winding at secondary side of transformer of electric arc furnace provides suitable operational voltage and current for reactive power componsator. The componsator connected to ends of coil out a', b', c' can compensate reactive power consumption of furnace as well as zero load reactive loss Qo and short circuit reactive loss Qk in operation of transformer. Thus, voltage of ends of coil out at low voltage side of transformer is stable. The equipment is a feasible reactive power compensator.

The invention discloses a novel wind powered generator control method and a controller, wherein the method comprises the following steps: sampling input signals by a sampling circuit; conveying results to the controller for maximum power tracking algorithm calculation; outputting pulse waves to a driving circuit; driving a CUK circuit by the driving circuit after processing the received pulse waves so that the equivalent impedance of the CUK circuit per se and a load can be regulated; and finally, outputting the maximum power capable of being output at the time by the wind powered generator. The controller of the invention comprises a sampling circuit, a control circuit, a driving circuit and a CUK circuit, wherein the output end of the sampling circuit is connected with the input end of the control circuit, the output end of the control circuit is connected with the input end of the driving circuit, and the output end of the driving circuit is connected with the input end of the CUK circuit. The method of the invention utilizes the maximum power tracking algorithm so that the wind powered generator controller can track the catchable maximum wind energy under the complicated external environment condition, and the power generation efficiency of a generator can be effectively improved.

A microstructure liquid self-driven flat plate type loop heat pipe with branches comprises an evaporator. A steam channel is formed in the bottom in the evaporator, and a capillary core is arranged above the steam channel; a gas collecting tank is arranged on one side of the steam channel and is connected with the boiling pool through a connecting pipeline; the boiling pool is connected with the condenser, an outlet of the condenser is divided into two paths, one path is connected with the connecting pipeline through a branch, and the other path is connected with the compensation cavity through a liquid pipeline; the compensation cavity is located above the evaporator or the compensation cavity and the evaporator are located on the same horizontal plane. By adding the branch, when the starting time difference is too large, part of liquid flows into the compensation cavity from the outlet of the evaporator along the branch, and temperature overshoot is eliminated; when the starting timedifference is small, part of liquid directly enters the boiling pool from the outlet of the condenser along the branch, and the maximum power is improved. A columnar microstructure with a scale gradient is arranged at the bottom in the boiling pool, and a working medium is self-driven on the surface of the wetting gradient to prevent local drying.

The invention discloses an ultra-wideband white noise source based on parallel connection of multiple single-mode chaotic lasers. By adopting the photoelectric conversion technology, the bottleneck ofthe electronic bandwidth is broken through, and the white noise source which is simple in implementation scheme structure and easily generates white noise with larger bandwidth is achieved. In the scheme of the invention, the power for outputting the white noise depends on the responsivity of a photoelectric detector and the power of each chaotic laser, and compared with the existing electronic noise source, the output power is easy to adjust and the exportable maximum power is higher. In addition, according to the technical scheme of the invention, a plurality of single-mode chaotic lasers are connected in parallel to generate ultra-wideband white noise, and the spectral density of the generated noise is more uniform.

The invention discloses a full bridge controllable power generating system employing a doubly-salient generator. The full bridge controllable power generating system includes a prime motor, the doubly-salient generator, a rectification power circuit and a generator controller. The prime motor drives the doubly-salient generator to rotate. The magnitude and the on-off of exciting current of the doubly-salient generator are controlled by the generator controller. One ends of windings of the doubly-salient generator are connected in a star shape so as to form a winding midpoint while the other ends of the windings are led out to connect with a compensation capacitor in series and then to connect with the input terminal of the rectification power circuit. The output terminal of the rectification circuit is connected with a load through a filtering capacitor and supplies power for the load. According to the invention, the output power of the motor can be increased, the voltage adjustment rate can be reduced and phase current control becomes quicker and more flexible. The invention discloses a control method of the full bridge controllable power generating system employing the doubly-salient generator.

The invention provides a gasoline engine exhaust silencer composed of porous pipes. The gasoline engine exhaust silencer comprises a front end cover, an outer barrel body, a tail cover and a tail pipewhich are connected in sequence. The gasoline engine exhaust silencer further comprises a silencing assembly arranged inside the outer barrel body. The silencing assembly comprises the first porous pipe, the second porous pipe and the glass fiber supporting porous pipe. The pipe wall of the first porous pipe is provided with a plurality of first silencing holes, and the first porous pipe is arranged in the second porous pipe. The pipe wall of the second porous pipe is provided with a plurality of second silencing holes. The pipe wall of the glass fiber supporting porous pipe is provided witha plurality of first sound absorption holes. A glass fiber layer is arranged between the glass fiber supporting porous pipe and the outer barrel body. A glass fiber layer is arranged inside the tail cover. The end face, facing towards the interior of the outer barrel body, of the tail cover is provided with a plurality of second sound absorption holes. The silencing effect and silencing performance are good so as to reduce noise pollution caused by operation of a gasoline engine, and the gasoline engine is large in largest power, high in highest speed and small in power loss.

The invention relates to the technical field of engines, and discloses an engine power classification method. By calculating strength coefficient, an engine operation region is divided into a plurality of power level regions, different levels operate different power regions, different operation principles are made, annual operation time requirements, average load rate requirements and maximum power operation time requirements are different and displayed by instruments, operation of a user is facilitated, the optimal maintenance scheme is selected according to practical usage of an engine in different power regions, maintenance cost is reduced, and the service life of the engine is prolonged.

The invention discloses a production process of an electric hot plate with the effect of releasing negative ions, and relates to the field of electric hot plate production. The problem that existing electric hot plates only have the heating function is solved. The production process specifically includes the following steps that firstly, tourmaline is modified to obtain modified tourmaline powder;secondly, the modified tourmaline powder, carbon black powder, water, a styrene-acrylic emulsion, tourmaline powder, pottery clay, polytetrafluoroethylene and glycerine are stirred evenly to obtain apaste; thirdly, a heating element is installed on a first insulating layer; fourthly, a second insulating layer is laid outside the heating element; and fifthly, the paste is coated on the surfaces of the first insulating layer and the second insulating layer and then cured and baked to obtain a finished product. According to the production process of the electric hot plate with the effect of releasing the negative ions, the finished product can release a large number of negative ions, air purification and health bodies of users are facilitated, the higher maximum power and surface temperature are achieved, and the heating need of people can be met.

The invention discloses a distributive electric-drive hinge steering tracked vehicle, and belongs to the technical field of transmission of tracked vehicles. A hybrid power distributive electric drive system is applied to a tracked vehicle; and the system consists of an engine, a gearbox, a generator, an electric energy management module, a whole vehicle controller, a power battery set, a motor controller, four drive motors and a transmission. The engine, the gearbox and the generator are connected to form a power generation system for providing electric energy to an electric energy management system; the electric energy management module is connected with the power battery set and the motor controller for controlling the power battery set to charge and generate electricity and to provide the electric energy to the motor controller; the motor controller independently controls four drive motors; the four drive motors are connected with driving wheels through a reduction gearbox or the transmission; and the four driving wheels drive four tracks to rotate. The distributive electric-drive hinge steering tracked vehicle simplifies a transmission system, is flexible in power distribution, and improves the cross-country maneuvering and fuel economic performance.

The invention relates to the technical field of automobile engines, and discloses a connecting rod mechanism and an engine. The connecting rod mechanism comprises a connecting rod and an adjusting assembly, wherein a bearing bush assembly is arranged in a large head hole of the connecting rod; the bearing bush assembly comprises an upper bearing bush and a lower bearing bush, wherein the wall thickness of the upper bearing bush is gradually thickened from two ends to the middle, and the wall thickness of the lower bearing bush is gradually thinned from two ends to the middle; and the adjustingassembly is arranged on the connecting rod and used for adjusting the circumferential positions of the upper bearing bush and the lower bearing bush. According to the connecting rod mechanism and theengine, the upper bearing bush and the lower bearing bush in the connecting rod mechanism form an eccentric bearing bush assembly, and the adjusting assembly adjusts the circumferential positions ofthe upper bearing bush and the lower bearing bush, so that the running stroke of the connecting rod is variable, and the requirement for the compression ratio of the engine of different purposes can be met; and in addition, structure changes by the connecting rod mechanism on the engine is small, so that simple structure, convenient control, good reliability and low cost are all achieved.

The invention relates to a circular pipe type microgroove path heat pipe which uses carbon nanometer pipe suspending liquid as work medium and comprises an evaporation zone, a heat insulation zone and a condensation zone, wherein, the evaporation zone, the heat insulation zone and the condensation zone are successively connected with each other in order. The carbon nanometer pipe suspending liquid is injected in the evaporation zone as the work medium, and the filled liquid rate of the carbon nanometer pipe suspending liquid is from 40 percent to 60 percent. The evaporation zone utilizes an electric heater to heat, and a teflon rod is sheathed outside the heat insulation zone for the heat preservation. A cooling water jacket is welded outside the condensation zone and is cooled by using cooling water to wash. Compared with the previous heat pipe which uses pure water as the work medium, the microgroove path heat pipe of the invention, which uses the carbon nanometer pipe suspending liquid as the work medium, can most increase the heat exchange coefficient of the evaporation zone by 90 percent. Besides, the total thermal resistance of the heat pipe can be reduced by about half, and the biggest power of the heat pipe can be increased by about 30 percent.

The invention discloses an Ethernet power supply circuit applied to network monitoring equipment. The Ethernet power supply circuit comprises a proportional plus derivative (PD) controller, a DC (direct current)-DC controller, a power switch field effect transistor (FET) tube, a transformer, a rectifying circuit and a voltage detection circuit; an inner metal-oxide semiconductor field effect transistor (MOSFET) tube is arranged in the PD controller; the DC-DC controller, the power switch FET tube and the transformer are sequentially connected to form a DC-DC converter; the rectifying circuit is in feedback connection with the DC-DC controller through the voltage detection circuit; an outer MOSFET tube is connected in parallel with the inner MOSFET tube in the PD controller, and is connected with a level switching circuit; and the PD controller is connected to the level switching circuit. The current through capacity between control input ground (GND) and the ground (GND) of the level switching circuit is improved, and power for the PD controller is saved by 80 percent, so that the PD controller cannot be damaged due to overheat, and the maximum power which can be output by the circuit is improved further.

The invention discloses a synchronous charge extraction system, which relates to the field of charge extraction; comprising: the piezoelectric material generates charges through deformation and forms an alternating current; the frequency conversion circuit converts the low-frequency alternating current into a high-frequency alternating current, and accepts The control signal I generated from the bidirectional switch control circuit, the control signal I controls the first bidirectional switch in the frequency conversion circuit to turn on and off; the bidirectional switch control circuit generates control signals and sends them to the frequency conversion circuit and the DC -DC conversion circuit; the DC-DC conversion circuit receives the control signal II generated by the bidirectional switch control circuit, and the self-control signal II controls the conduction of the second bidirectional switch in the DC-DC conversion circuit after waveform conversion with cutoff. The maximum power and efficiency of energy harvesting are improved, and at the same time, because the matching inductance value is reduced in this circuit, the volume of the energy recovery device can be greatly reduced.

The invention relates to an ultra-wideband photo-generated millimeter wave noise generator. The ultra-wideband photo-generated millimeter wave noise generator comprises a super-radiation light emitting diode, an optical fiber isolator, an erbium-doped optical fiber amplifier, a polarization controller, a high nonlinear optical fiber (HNLF) and a high-speed photoelectric detector which are connected in sequence. According to the scheme, millimeter wave noise is generated through an optical method, the bottleneck of electronic bandwidth is broken through, ultra-bandwidth millimeter wave noise iseasy to generate, and the structure is simple; the power of output noise depends on the amplification power of the erbium-doped optical fiber amplifier, and compared with a conventional electronic noise generator, the output power of the ultra-wideband photo-generated millimeter wave noise generator is easy to adjust, and the maximum power capable of being output is larger. According to the invention, millimeter wave noise is generated by using the combined action of the nonlinear effect and dispersion in the high nonlinear optical fiber, the spectral density of the generated noise is more uniform, and the bandwidth is larger.

The invention discloses a laminating device and a laminating method. The laminating device comprises a laminating machine lower cavity, a laminating machine upper cavity, a vacuum pumping device and a pressure device, wherein a heating device is arranged in each of the laminating machine lower cavity and the laminating machine upper cavity; a thin-film battery assembly to be laminated is laid between the laminating machine lower cavity and the laminating machine upper cavity; the laminating machine upper cavity is also provided with a electrifying device; the input end of the electrifying device is connected with an outer constant current power supply; the output end of the electrifying device is connected with a bus bar of the thin-film battery assembly to be laminated for performing the electrifying link. On the basis of the laminating technology, the rated electrifying device is added; the electrifying process is simultaneously completed in the laminating process; the process of stabilizing the maximum power of a cadmium telluride thin film solar module is accelerated; the production cost is reduced; the production time is saved; the further reduction of the assembly cost is facilitated; the product competitiveness is improved.

The invention relates to a photo-generated millimeter wave noise generator, which comprises a chaotic laser, an erbium-doped fiber amplifier, a second polarization controller, a high nonlinear fiber (HNLF) and a high-speed photoelectric detector which are connected in sequence, wherein the chaotic laser is composed of a semiconductor laser, a first polarization controller, a 60: 40 optical fiber coupler, a variable optical attenuator and an optical fiber reflector. The scheme of the invention provides an optical generation technology of millimeter wave noise, the bottleneck of electronic bandwidth is broken through, the implementation scheme is simple in structure, and millimeter wave noise with larger bandwidth is easy to generate; according to the technical scheme, the power of millimeter wave noise output depends on the amplification power of the erbium-doped optical fiber amplifier; compared with a conventional electronic noise source, the output power of the electronic noise source is easy to adjust, and the maximum power capable of being output is larger; according to the technical scheme, millimeter wave noise is generated through the combined action of the nonlinear effect,dispersion and the like in the high nonlinear optical fiber, the frequency spectrum of the generated millimeter wave noise is flat, and the bandwidth is larger.

The invention discloses a control method and electronic equipment, and the method comprises the steps: obtaining the working state of a functional device, wherein the functional device has at least two working states, and the working power of the functional device is different in the different working states; determining a current power parameter of the functional device based on the working state; determining a transferable power parameter at least according to the current power parameter and a design power parameter, wherein the design power is the maximum power which can be provided for thefunctional device; determining adjusting power output information according to the transferable power parameter and an original power parameter, wherein the original power is default power provided for a powered device; and transmitting the the adjusteing power output information to connected power receiving equipment, so that the power receiving equipment adjusts a power receiving mode based onthe adjusting power output information.

The invention relates to a method for reducing a pressure drop in a combuustion engine air intake line (11) of a motor vehicle powerplant having a compressor (8) that forms part of a turbocharger andan auxiliary compressor (9) in the air intake line (11), the power unit operating in a supercharged phase of operation in which the turbocharger (4, 8) and the auxiliary compressor (9) are active whena demand for engine torque is emitted, the auxiliary compressor (9) being stopped or left operating at idle when a predetermined engine maximum power threshold is crossed, a flow of air along the intake line (11) then predominantly bypassing the auxiliary compressor (9). At the demand of the driver of the vehicle, the auxiliary compressor (9) is kept in operation when the predetermined thresholdis crossed, the flow of air along the intake line (11) being predominantly via the auxiliary compressor (9).

The provides a stepping motor control-based high-power electronic switch and aims to solve the problems of small driving force and high requirements for a protection box of a traditional electronic switch. The stepping motor control-based high-power electronic switch comprises an electronic switch main body and a fixed box 8; the electronic switch body comprises an extra-thick current-carrying static contact conductive elastic sheet 1, an extra-thick current-carrying moving contact conductive elastic sheet 2, L-shaped conductive elastic sheet fixing plates 3, a PCB 5 and a plastic base 6. Thehigh-power electronic switch is characterized in that the high-power electronic switch comprises a stepping motor 4 and a Hall element 45; the stepping motor 4 is electrically connected with the PCB 5; the stepping motor 4 is electrically connected with the Hall element 45; the Hall element 45 is electrically connected with the PCB 5; the power source line of the PCB 5 can be electrically connected with a load; the number of the L-shaped conductive elastic sheet fixing plates 3 is at least two; and the two L-shaped conductive elastic sheet fixing plates 3 are fixed on the first surface of theplastic base 6.

The invention relates to the technical field of ships, in particular to a propeller-hanging arm type counter-rotating device, a counter-rotating system and a ship. The technical problems in the priorart that a counter-rotating propeller is limited in power due to the limitation of a rudder ball, after the counter-rotating propeller rotates with a rudder, the efficiency is lowered, the installation and use of the counter-rotating propeller is severely restricted by a rudder blade, and a rudder stock needs to additionally bear a larger thrust of the counter-rotating propeller are solved. The propeller-hanging arm type counter-rotating device comprises a propeller-hanging arm and a counter-rotating propeller, wherein the counter-rotating propeller is installed between a propeller and the rudder blade and is independently arranged, and the propeller-hanging arm are separately connected with the counter-rotating propeller and a hull plate and can drive the counter-rotating propeller to move to adjust the position of the counter-rotating propeller. The maximum power of the ship is improved, the maximum diameter of the counter-rotating propeller is significantly improved, the propulsiveefficiency is ensured, and the practicability is higher.