69results about How to "Achieve high power output" patented technology

The invention relates to a floating platform capable of suspending in water, a device of generating electricity by means of wave energy of water. Simply, the device is composed of large and small floating tables with different functions and divisions of work. The combination can be diversified, and in particular, the most typical structure of an integral functional unit is formed by four secondaryfloating tables which are arranged symmetrically on a primary floating table in a cross manner. Compared with wind power generation, the device without a firm foundation is conveniently built, and isexcellent in windproof and wave-resisting performances as the device is attached to the water surface. Compared with solar power generation, the layout of the device does not occupy limited land area, and is also not limited by lighting conditions in cloudy days at night. Furthermore, the floating platform formed on the water surface combines the expanded land area and wind energy or solar energy, so that the device is a possible vision. In a word, the floating wave power generation device not only is suitable for islands or drilling platforms far from the main land, but also has a glorious prospect if being applied to peri-urban areas rich in coastal tide or wave resource and exuberant in demand on energy source on a large scale.

The invention provides a high power DC-DC converter based on aviation dual-active bridge circuits and a health management method thereof. The converter is used for changing an input voltage of onboardrated input 270VDC into a 28VDC rated output voltage. Onboard equipment provides a power supply. A system is realized based on the active bridge circuits and has the advantages of high efficiency, concise control mode and light weight. A four-module parallel working mode is employed. The supported maximum output power is 12kW. Through modular design, high power output is easy to realize. A powersupply system of any power level can be formed. Flexibility of the power supply system is improved. Product serialization, platformization and standardization are easy to realize. A health managementtechnology is integrated into the converter, through analysis and processing of various state parameters which are collected in real time when the converter operates, a health state of the system is evaluated, residual life of an internal power switch tube which is easy to lose efficacy is predicted, a maintenance suggestion is provided, and health management service is put forward, so working reliability of the whole system is improved and maintenance cost is reduced.

A wind electricity generator with dwindled then widened spout comprises tower base, blower fixed on the top of the base and a dynamo drove by the blower. The blower is coaxially fixed to the spout in the dwindled part. The inlet area A1 of the spout is relative large, and along the wind direction, the area of laryngeal part A2 is the smallest, after the laryngeal, the area is enlarged to outlet area A3. With dwindled design, the wind speed is accelerated, so maximizing the utility of wind, decrease the blower's size and lowing down the cost.

It is a semi-conductor laser side pump solid ribbon laser, which is characterized by the following: the laser activation medium is laser solid ribbon of cuboid thin slice; the output pump light from semi-conductor laser pump is shaped into an one-dimensional parallel light of quadrate section; the light beam diameter of the pump light along thickness direction is less than half of the laser solid ribbon thickness; the pump light goes into the laser solid ribbon from the side of the solid ribbon; the laser solid ribbon dissipate heat from upper and down surfaces.

The invention discloses a semiconductor laser for a solid-state laser pumping source. The semiconductor laser comprises a base, a plurality of Z-shaped illuminant components arranged on the base, wherein the plurality of illuminant components are connected in series, and the adjacent illuminant components are symmetrically arranged on the base; the illuminant component comprises a heat sink on which a circuit board is installed; one end of the heat sink is installed with a first electrode electrically connected with the circuit board, and the other end is installed with a second electrode electrically connected with the circuit board; a bar module is arranged between the first electrode and the second electrode in the middle part of an upper end surface of the heat sink, the bar module is formed by a plurality of bar components in series connection; and two ends of the bar module are electrically connected with the first electrode and the second electrode through conductive blocks. The semiconductor laser has the features of being compact in structure, small in volume, large in power, good in radiating effect and long in service life.

The invention relates to a vertical axis suspension permanent magnet wind generator and a control method of the vertical axis suspension permanent magnet wind generator and belongs to the field of wind power. The wind generator comprises a rotor, a stator, a shell, a tower cylinder, a base, a damping brake system, a suspension system, a wind collection drive system and a control system. The stator comprises a stator core and a three-phase winding. The periphery of the tower cylinder is sleeved with the stator, and the stator and the tower cylinder are fixed. The rotor comprises a rotor core and a permanent magnet, and the outer side of the stator is sleeved with the rotor. The suspension system is an electromagnet and permanent magnet mixed suspension system. The wind collection drive system comprises transverse supports, longitudinal supports, blades and sleeves. The transverse supports and the longitudinal supports are fixed to the rotor and the shell. The control system obtains the suspension current given value according to the difference of the air gap length set value and the air gap real-time measurement value to control the suspension air gap, and the stable power generation of an engine is guaranteed. The vertical axis suspension permanent magnet wind generator is ingenious in structure, easy to control, easy and convenient to mount and maintain, high in wind energy utilization rate and capable of achieving the low-wind-speed start and large-power output.

A wind electricity generator with dwindled spout comprises tower base, blower fixed on the top of the base and a dynamo drove by the blower. The blower is coaxially fixed to the spout in the dwindled part. The inlet area A1 of the spout is relative large, the outlet area A2 is small, the sectional area decreases along the wind flow direction. With dwindled design, the wind speed is accelerated, so maximizing the utility of wind, decrease the blower's size and lowing down the cost.

A high-power fiber laser phased array high-speed information transmitting device capable of being dynamically connected is applied to the field of super-remote-distance space communication. To achieve high-speed laser high-power emission and super-remote-distance transmission, a seed source undergoes beam split through a coupler, a beam of light is input into phase controllers as reference light, and the other beam of light undergoes high-speed information modulation; a radio-frequency signal generator and the other beam of light enter an intensity modulator to obtain a high-speed modulation signal, the high-speed modulation signal enters the four phase controllers respectively to carry out phase control after undergoing uniform light split through the coupler, four beams of high-speed modulated light are obtained, and the four beams of high-speed modulated light enter four optical fiber amplifiers respectively to be amplified at a high power and then undergo coherent beam combination through a beam combiner; a beam splitter outputs 1% of a combined laser into the phase controllers, the combined laser undergoes phase comparison with the reference light, the comparison result is processed by the phase controllers to send out phase control signals, and four phase modulators control the phases of the beams of light respectively after receiving the phase control signals to guarantee coherent beam combination and emission angle scanning.

The invention aims at providing a vertical laminated busbar-based converter module which is compact in structure, reasonable in arrangement, high in safety and reliability, convenient to maintain and good in electrical property. According to the vertical laminated busbar-based converter module, a three-phase half-bridge DC busbar comprises symmetrically superimposed positive busbar and negative busbar; an insulating layer is arranged between the positive busbar and the negative busbar; an input positive electrode of the positive busbar and an input negative electrode of the negative busbar are correspondingly connected with a positive electrode and a negative electrode of an IGBT power device; the positive electrode and the negative electrode of the IGBT power device are symmetrically arranged at two sides of the three-phase half-bridge DC busbar; capacitance windows which are equal to peak absorption capacitors in number are arranged in the lower side edge of the three-phase half-bridge DC busbar; the peak absorption capacitors are located at the capacitance windows and the positive electrodes and the negative electrodes of the peak absorption capacitors are correspondingly connected with the positive electrode and the negative electrode of the IGBT power device respectively; and a DC support capacitor is connected to the three-phase half-bridge DC busbar. The vertical laminated busbar-based converter module can be applied to the field of power equipment.

The invention discloses a display screen structure realized by optical fibers, which relates to a display screen realized by the optical fibers and is applied in the field of high-luminance color display to solve the problems of high cost, low resolution and low luminance of the conventional high-quality display screen. An optical signal of a signal laser source of the display screen structure is input from one end of a first multimode fiber; each circulator is connected with a single mode fiber, the multimode fiber and a fiber Bragg grating to form a pixel point; N pixel points are connected end to end to form a linear structure; each pixel point outputs the optical signal with a wavelength; N is the number of the pixel points of the display screen, and is any integer in the range of 100 to 300,000,000; the N pixel points are arranged into a 10-30,000*10-10,000 array; the signal laser source is a laser which outputs N wavelengths; and the N wavelengths output by the signal laser source correspond to central wavelengths of the first to the Nth fiber Bragg gratings one to one.

The invention provides a direct coupling microwave liquid-phase plasma alcohol hydrogen production device and method. The device comprises a microwave generator, a rectangular waveguide tube, a liquid-phase discharge electrode, a reactor, a feed tube, an exhaust tube, a gas collecting tube, a raw material tank, a composite vacuum gauge and a metal sleeve. The reactor is made of a quartz material or a ceramic material or a mixture of the quartz material and the ceramic material. The upper portion of the reactor is connected with the composite vacuum gauge, the feed tube and the exhaust tube. The other end of the feed tube and the other end of the exhaust tube are connected to the raw material tank. The lower portion of the reactor vertically penetrates through the rectangular waveguide tube and is nested in the metal sleeve, and the metal sleeve is welded to the lower portion of the rectangular waveguide tube. The liquid-phase discharge electrode is arranged in the metal sleeve. One end of the rectangular waveguide tube is connected to the microwave generator. The top of the raw material tank is connected with the gas collecting tube. By the adoption of the device and method, working efficiency of liquid-phase microwave plasma alcohol hydrogen production is improved.

The invention relates to a planar multi-electron-beam excitation graphene sub-wavelength grating-integrated terahertz radiation source and application of the terahertz radiation source. The terahertzradiation source comprises a shell, an electron gun cathode, a grating structure, partition plates, and an output port; the shell is used for protecting the terahertz radiation source; the electron gun cathode is arranged on one side of the opening of the shell and is used for emitting multiple electron beams; the grating structure is arranged in the shell; a graphene layer is arranged on the surface of the grating structure; and the surface plasmon polaritons of the graphene layer interact with the multiple electron beams, so that terahertz radiation can be generated; the partition plates arearranged between every two adjacent electron beams and are used for isolating the electron beams; and the output port is arranged on the shell and is used for outputting the terahertz radiation. According to the terahertz radiation source of the invention, the coupling effect of the electron beams and an integrated high-frequency system is fundamentally enhanced; beam-wave interaction efficiencyis improved; the problems of the low interaction efficiency and low output power which confront the development of a vacuum electronic device towards a terahertz wave band are solved; the output powerof the terahertz radiation source can be greatly improved; and the processing of engineering tubing and the realization of a high-power terahertz source are facilitated.

The invention discloses a vehicle-mounted bidirectional charger circuit of an electric automobile. The vehicle-mounted bidirectional charger circuit of the electric automobile comprises a rectifier module, a DC/DC conversion module, and a control circuit, the rectifier module is connected with the DC/DC conversion module through a direct current bus, the working modes of the vehicle-mounted bidirectional charger circuit comprise a forward direction battery charging mode and a reverse direction alternating current output mode; under the forward direction battery charging mode, the rectifier module works as a full-bridge PWM rectifier circuit, and the DC/DC conversion module works as a full-bridge LLC rectifier circuit; under the reverse direction alternating output mode, the DC/DC conversion module works as a full-bridge LC rectifier circuit, and the rectifier module works as a full-bridge inverter circuit. According to the vehicle-mounted bidirectional charger circuit of the electric automobile, the vehicle-mounted bidirectional charger is low in cost and high in power density, and high power output with a small volume can be realized.

The invention discloses a tunable short-pulse laser amplifier based on mode-locking autocorrelation. Pumping is performed based on a specific gain switching characteristic of a laser operation material by utilizing a Q-switched quasi-continuous laser beam; based on a self-focusing nonlinear characteristic of an operation material of a kerr medium, self mode-locking oscillation is realized; a tunable property and dispersion compensation of optical wavelengths are realized by a first prism and a double-refraction interference filter; the pulse width of a light beam of specific wavelength of a tuning laser is expanded through a pulse width expander; the light beam, expanded by the pulse width expander, is subjected to proper linewidth expansion through a phase modulator; the laser beam, expanded by the phase modulator, is subjected to power amplification through an external regenerative amplifier; the laser beam with amplified power is subjected to pulse width compression through a pulse compressor; and after the light beam is oscillated in a hollow cavity self-mode-locking system, the light beam emits from a sixth concave spherical mirror. By adoption of the tunable short-pulse laser amplifier, the problems of not high single-stage power amplifying times and impossibility of realizing tuning of laser wavelengths are solved.

The invention disclose a tilted fiber grating display screen realized by using an optical fiber, and relates to a display screen which is realized by using the optical fiber. The display screen is applied in the field of high-brightness, colored and high-resolution display and solves the problems of high cost, low resolution and low brightness in a conventional high-quality display screen. Optical signals of a signal laser source of a display screen structure are input from one end of a multimode optical fiber; each tilted fiber grating reflects an optical signal with a corresponding wavelength to the side surface of the optical fiber for outputting; N tilted fiber gratings reflect N optical signals with the corresponding wavelength, so that a display screen function of N pixel points is realized, wherein N is the number of the pixel points on the display screen and is an integer from 100 to 300,000,000; and the pixel points are arranged in an array of 10-30,000*10-10,000. A used laser is the laser which outputs N wavelengths; and the N wavelengths output by the laser correspond to the centre wavelength of the first to Nth tilted optical fibers one by one.

An air source power system can be in a full-closed circulation mode, semi-closed circulation mode or a progressive increase mode and comprises a high-pressure fan, first to N-th air engine operating sets, a booster fan, an AC generator, a power output shaft and the like. The air source power system has the advantages that physical characteristics of air flow are made comprehensive use, both low-power input and high-power output are achieved, and dependence on traditional energy sources can be gotten rid of.

The invention belongs to the technical field of power electronics, and relates to a high-precision large-power dc voltage output control method. The high-precision large-power dc voltage output control method comprises step A: a reference unit takes a sample of dc voltage, the dc voltage serves as reference dc voltage of each power unit and is sent to a comparison module; step B: a feedback module acquires working dc voltage of each power unit and sends the working dc voltage to the comparison module; step C: the working dc voltage of a plurality of power units is compared with the reference dc voltage of the plurality of power units in the comparison module, and the error value of the working dc voltage of the power units can be obtained; and step D: the comparison module controls the change of output energy in order to make the dc voltage of the power units tend to the reference dc voltage. With respect to the high-precision large-power dc voltage output control method, the input voltage is dynamically adjusted according to different output voltage, the adjusting precision of the power supply can be improved, and large-power output can be achieved.