51results about How to "Achieve high power" patented technology

The invention discloses a parallel structure and a control method for a photovoltaic power generation grid-connected inverter and belongs to the technical field of renewable energy sources. A topological circuit structure of the photovoltaic power generation grid-connected inverter is divided into a parallel structure of single-phase voltage type pulse-width modulation (PWM) inverters and a parallel structure of three-phase voltage type PWM inverters; and in the control method, an outer ring regulator of a control circuit of the parallel voltage type PWM inverters is independent based on a power grid voltage-oriented vector control technology in a control mode of voltage outer ring and current inner ring so as to form a common unified outer ring regulator; control strategies of various inverters are simplified into single closed loop current control so as to achieve the consistency of energy flow directions of the parallel voltage type PWM inverters and avoid ring current; and the parallel current sharing of the voltage type PWM inverters is realized. Therefore, multiple modules of the voltage type PWM inverters are connected in parallel to realize high-power modularized large-scale application.

The invention discloses a surface-mount device light emitting bulb with a cylindrical heat radiation ring. The surface-mount device light emitting bulb comprises a lamp holder component (2) with a driving component (3), the lamp holder component (2) is connected on a bulb shell (6), the cylindrical heat radiation ring (5.3) is arranged in the bulb shell (6), a surface-mount device light emitting component (1) is arranged on the outer surface of the heat radiation ring (5.3), a wire support (4.1) is arranged in the bulb shell (6), and a plurality of electric connection wires (4.2) connected with the driving component (3) are arranged on the wire support (4.1) and connected with the light emitting component (1). According to the light emitting bulb, a replaceable and standardized independent electric light source with high power can be achieved, light extraction efficiency is improved, the light emitting bulb can be operated in a closed lampshade, and the light emitting bulb is more convenient to assemble structurally and firmer in structure.

The invention discloses a double-end-electrified multi-phase alternating current motor variable-frequency control device, which comprises a multi-phase alternating current motor, wherein the m head ends and the m tail ends of the stator winding of the multi-phase alternating current motor are led out to respectively connect with a multi-phase univertor, and the multi-phase univertor is formed by a direct current power supply, a filter capacitance, a multi-phase inverter and a variable-frequency controller, and the phase number m of the multi-phase alternating current motor is equal to that of the multi-phase inverter, wherein m>=5. The double-end-electrified multi-phase alternating current motor variable-frequency control device of the invention not only can realize large power by using a power electronic component with limited single-tube capacity in a larger range, but also has higher reliability as having redundancy on phase units and a system.

The invention relates to a retort char, gas, oil, liquid, heat and fertilizer co-production system by biomass waste recycling; a liquid light hydrocarbon forced mixed gasifier is communicated with a combustion chamber of a biomass retort char producer, a gas outlet of the biomass retort char producer is connected to a gas-liquid-oil separation purifying device, products of the gas-liquid-oil separation purifying device treated by using a process are connected respectively to a biomass gas tank, a wood vinegar tank and a wood tar tank correspondingly, and an outlet of the wood tar tank discharges atomized tar through a heating atomizer and is then communicated with a combustion chamber of the biomass retort char producer through combustor II; the biomass gas tank is connected to combustor I through a control valve; a solid outlet of the biomass retort char producer discharges biochar powder. The system herein co-produces biomass char, gas, oil, liquid, heat and fertilizer by combining the liquid light hydrocarbon mixed gasifier with retorting, medium-caloric-value gas is supplied centrally, and the system is suitable for continuous operation, simple in structure, easy to operate, convenient to maintain, and good in safety and reliability.

The invention discloses a multi-antenna MIMO system which can realize narrow beam and low power of a service channel and wide beam and high power of a control channel, improve system performance, guarantee coverage, and reduce system construction cost. The embodiment of the present invention provides a multi-antenna MIMO system comprising an antenna array, a first transceiver and a second transceiver, wherein the antenna array is connected to the first transceiver and the second transceiver, and the first transceiver is connected with the output port of the service channel, and the second transceiver is connected with the output port of the control channel and the output port of a cell pilot channel, the first transceiver comprises a first power amplifier, the second transceiver comprises a second power amplifier, the output power of the first power amplifier is less than that of the second power amplifier.

The invention discloses a coil rack assembly of an electromagnetic relay. The coil rack assembly comprises a coil rack and a terminal pin, wherein a terminal pin installation base is arranged on the coil rack; a clamping slot is arranged on the terminal pin installation base. The coil rack assembly is characterized in that the terminal pin comprises a clamping part, a terminal winding part and a leading foot perpendicular to the clamping part and the terminal winding part, wherein the clamping part and the terminal wire winding part are arranged back to back; the notch of the clamping slot is arranged on the side face of the terminal pin installation base; the clamping part of the terminal pin is connected with the clamping slot in a clamping way. The coil rack assembly of the electromagnetic relay has the advantages that the insertion and extraction force of the terminal pin can be greatly improved, and a magnetic circuit system space can be increased under the condition of limiting the boundary dimension.

The invention relates to a power system structure which comprises a power module and a structure connected with a system, wherein a direct-current positive busbar is arranged above the power module; a direct-current negative busbar and a main bus copper bar are connected through a transfer copper bar; the structure connected with the system comprises a transfer copper bar nut plate and a compression module direct-current busbar leading-out terminal of the transfer copper bar; an alternating-current copper bar on the rear lower side of the power module is directly connected with an alternating-current copper bar of the system; a bus capacitor passes through a bus capacitor fixing plate, and a bus capacitor clamping plate and a capacitor clamping pull rod are fixed on a module fixing bracket and a water cooling plate; two terminals of the direct-current positive busbar and two terminals of the direct-current negative busbar are upward, are led out and are respectively connected with the main bus copper bar. With the adoption of the system structure and the power module structure provided by the invention, high power density, compact structure and a good water cooling heat dissipation effect of the bus capacitor and an IGBT (Insulated Gate Bipolar Transistor) can be realized; a direct-current copper bar and the alternating-current copper bar of the power module are respectively led out up and down; through a transfer structure, mounting and connection are reliable and convenient, and the characteristics of high power and compact structure are realized.

The invention provides an integrated LED device and preparing method thereof. The device comprises several LED chips. The LED chip contains N type semiconductor layer, multiple quantum well luminous layer, P type semiconductor layer, N electrode and P electrode. The N electrode connects N type semiconductor layer electrically, and the P electrode connects P type semiconductor layer electrically. The graphical substrate is used for carrying the LED chips and comprises several primary interconnected areas and secondary interconnected areas. The N electrode and P electrode in the LED chips respectively connect the primary interconnected areas and secondary interconnected areas in the graphical substrate electrically. The device connects the LED chips and graphical substrate electrically with simple structure and manufacturing technology improving the reliability of device and realizing the large power and high current.

The invention discloses an LED deep ultraviolet flip chip with a quartz glass substrate. By means of the characteristic of deep ultraviolet light capable of transmitting quartz glass, a single surface of the quartz glass emits light, a deep ultraviolet GaN LED structural layer is grown on the other plane of the quartz glass, a positive electrode P and a negative electrode N on the chip are used for heat conduction and dissipation, current inlet and outlet and heat sink welding, because of the LED deep ultraviolet flip chip with the quartz glass substrate, subsequent product packaging processes such as lead frame, routing and adhesive sealing can be omitted, an epitaxial layer is protected by using the quartz glass as a chip lens, the anti-static capability is also improved, and important effects of reducing oxidization and prolonging the service lifetime of a device are achieved. After the adoption of the flip-chip technical scheme, thermal management of the LED chip can be effectively improved, a large current can pass through the chip, a flicker caused by gold wire pseudo soldering or unfavorable contact can be prevented, and the problems of difficulty in heat dissipation, small power, short service lifetime and large light attenuation of the deep ultraviolet LED chip are solved.

The invention discloses a non-metallic heating device for cooking. The non-metallic heating device for cooking comprises a non-metallic pot body and a heating base, wherein the heating base comprisesa heating plate, at least one glass functional coating is formed on the surface of the heating plate, the heating plate and the non-metallic pot body are formed into an integrated structure through the glass functional coatings, and each glass functional coating partitions food in the non-metallic pot body from the heating plate. The non-metallic heating device for cooking has the advantages thatthat a heating device body is completely made from nonmetal, and the non-metallic heating device is low in cost, long in service life and safe, can be produced in batch and is easy to clean.

The invention discloses a nonmetallic heating device which comprises a nonmetallic pot and a heating base, wherein the heating base comprises a heating plate; the nonmetallic pot is a bottom-cut pot;at least one glass function coating is formed on the surface of the heating plate by coating first glass powder paint; the glass function coating and the nonmetallic pot are molded into an integral structure by virtue of second glass powder paint, so that the nonmetallic pot is fixedly connected with the heating base; and foods in the nonmetallic pot are separated from the heating plate by virtueof the glass function coatings. With the adoption of the nonmetallic heating device disclosed by the invention, the heating device body is made from all non-metals, and the nonmetallic heating devicecan achieve the advantages of being low in cost, long in service life, safe, capable of realizing mass production, easy to clean and the like.

The invention discloses a hollow shaft type railway vehicle permanent magnetic direct drive traction transmission device. The device comprises a permanent magnetic traction motor, a connecting shaft,a wheel set assembly, an elastic suspension device, an elastic coupler, a shaft box, a supporting spring and a framework, wherein a power output shaft adopts a hollow shaft type structure, is supported by bearings at the two ends and adopts a structure of simultaneous output at the two ends; and the connecting shaft penetrates through the interior of the power output shaft, the two ends of the connecting shaft are inserted into protection bearings in wheel moving axes, and the two wheel moving axes are connected into a whole. The device disclosed by the invention has the advantages that a bentbeam structure is eliminated, wheel sets at the two ends are connected into a whole by virtue of the connecting shaft, the bending strength of the wheel sets is improved, and the permanent magnetic traction motor becomes one individual component, so that assembling and later maintenance are facilitated; and the overall transmission efficiency of a railway vehicle is further improved, unsprung mass is more effectively reduced, the requirement of the railway vehicle on road conditions is reduced, and the application range of the railway vehicle permanent magnetic direct drive traction transmission device is expanded.

The invention belongs to the field of wireless charging materials, and discloses a nanocrystalline magnetic conductive sheet for high-power wireless charging and a production method thereof. The nanocrystalline magnetic conductive sheet is composed of Fe (100-x-y-z-alpha-beta-gamma) MxCuyM'zSi alpha B beta X gamma, and the saturation flux density Bs is larger than or equal to 1.25 T. The production method comprises the following steps: preparing an alloy with set components into an amorphous alloy ribbon, then carrying out set annealing treatment to obtain a nanocrystalline ribbon, and then carrying out magnetic crushing treatment to obtain the nanocrystalline magnetic conductive sheet for high-power wireless charging. According to the invention, through two times of set crystallization annealing treatment and further combination of double-sided coating protection, crushing and compounding processes, the obtained nanocrystalline magnetic conductive sheet product can be applied to a high-power wireless charging occasion, and the performance of a wireless charging module is greatly improved.

The invention discloses an LED filament lamp bulb with arc-shaped thermal radiation supports and application of the LED filament lamp bulb. The LED filament lamp bulb comprises a lamp head assembly with a driving assembly. The lamp head assembly is connected to a lamp bulb shell internally provided with the two thermal radiation supports with arc-shaped sections. An LED light-emitting assembly is arranged between the two thermal radiation supports. A wire support is arranged in the lamp bulb shell and is provided with a plurality of electric connection wires connected with the driving assembly. The electric connection wires are connected with the LED light-emitting assembly. According to the LED filament lamp bulb with the arc-shaped thermal radiation supports and application of the LED filament lamp bulb, a replaceable, standardized and independent LED electric light source is achieved, and the light-emitting efficiency is improved compared with an integrated LED lamp assembly. Due to a radiation heat dissipation principle, operation can also be conducted in an airtight lampshade, the high-power independent LED electric light source can be achieved, the LED filament lamp bulb is more convenient to assemble structurally, and the structure is more stable and reliable.

The invention discloses an LED lamp filament bulb with a semicircular heat radiation ring. The LED lamp filament bulb comprises a lamp cap assembly 2 with a drive assembly 3. The lamp cap assembly 2 is connected to a bulb shell 6. The bulb shell 6 is internally provided with the heat radiation ring 5.3 with the semi-arc section. The heat radiation ring 5.3 is provided with an LED light emitting assembly 1. The LED light emitting assembly 1 is composed of a plurality of LED lamp filament assemblies. Each LED lamp filament assembly comprises a plurality of LED lamp filaments, the two ends of each LED lamp filament are provided with electric connection terminals, and the electric connection terminals at the two ends of each LED lamp filament are connected with two heat and electricity conduction terminal supports correspondingly. A wire support 4.1 is arranged in the bulb shell 6 and provided with a plurality of electric connection wires 4.2 connected with the drive assembly 3. The electric connection wires 4.2 are connected with the LED light emitting assembly 1. According to the LED lamp filament bulb with the semicircular heat radiation ring, a replaceable and standard independent LED electric light source is achieved, and compared with an integral LED lamp assembly, the light emitting efficiency is improved. On the basis of the radiation heat dissipation principle, the LED lamp filament bulb can run in a closed lampshade, and the large-power independent LED electric power source can be achieved. In addition, the LED lamp filament bulb is more convenient to assemble in structure, and the structure is more stable and firmer.