42results about How to "Uniform output power" patented technology

The invention relates to the electric power electronic technical field, and discloses a DC-DC converting circuit which comprises N unit converting circuits, M inductance units, a circuit input positive terminal, a circuit input negative terminal, a circuit output positive terminal and a circuit output negative terminal. The input positive terminal of the first unit converting circuit is in connection with the circuit input positive terminal through an inductance unit, and is directly in connection with the circuit input positive terminal; the input negative terminal of a Kth unit converting circuit is in connection with the input positive terminal of a (K+1)th unit converting circuit through the inductance unit or is directly in connection with the input positive terminal of a (K+1)th unit converting circuit; K, M and N are all natural numbers, KN, and 1=M=(N+1). The input negative terminal of an Nth unit converting circuit is in connection with the circuit input negative terminal through the inductance unit or is directly in connection with the circuit input negative terminal; the outputs of the N unit converting circuits are in parallel connection or in series connection, and are in connection with the circuit output positive terminal and the circuit output negative terminal. The DC-DC converting circuit reduces the cost, eliminates or reduces common mode interference, realizes interleaving control, decrease input and output current ripples, and is in favor of reducing filters and implementation difficulty.

The present invention belongs to the field of integrated photoelectronic technology, and is especially one kind of 1xN light power shunt with low loss, small size and homogeneous power output. The 1xN light power shunt includes N cascade T-shaped shunts, and each of the T-shaped shunts includes one multimode interference waveguide, one monomode incident waveguide serving as the input of T-shaped shunt, one output waveguide divided with one V-groove into two sections serving as two outputs of the T-shaped shunt, and one light power modulating module.

The present invention provides a single-crystal 90-degree space optical mixer with high space utilization. The objective of the invention is to solve the problems that a current space optical mixer is large in size, phase noise is caused by different optical path differences of each branch and the insertion loss is low. A polarization splitting prism is bonded by two right triangle prisms in an inclined plane mode, an inclined plane is plated with polarizing beam splitter; a first quarter wave plate and a first half wave plate are respectively arranged at the central positions of front and back surfaces of the polarization splitting prism; a first glass gasket is arranged right above the first half wave plate and is completely fit on the polarization splitting prism, and the first glass gasket and the first half wave plate are arranged in central symmetry mode and fit at the inclined plane of a first isosceles right-angle prism; a second half wave plate is arranged on the side surface of the polarization splitting prism, and incident light S penetrates the polarization splitting prism and is incident on the second half wave plate; and a second glass gasket is arranged right below the second half wave plate and completely fit on the polarization splitting prism, and the second glass gasket and the second half wave plate are arranged in central symmetry mode and fit on the inclined plane of a second isosceles right-angle prism.

A tunable distributed feedback (DFB) semiconductor laser based on a series mode or a series and parallel hybrid mode. A grating structure of the laser is a sampling Bragg grating based on the reconstruction-equivalent chirp technology. DFB lasers with different operating wavelengths based on the reconstruction-equivalent chirp technology are integrated together by a sampling series combination mode or a series / parallel hybrid mode, one of the lasers is selected to operate via a current, and the operating wavelength of the laser can be controlled by adjusting the current or the temperature, so that the continuous tuning of the operating wavelengths of the lasers can be realized. Various wavelength signals in parallel channels are coupled and then output from the same waveguide. An electrical isolation area (1-11) is adopted between lasers connected in series or lasers connected in series and connected in parallel to reduce the crosstalk between adjacent lasers.

The invention discloses a wind power blade. The wind power blade is formed by three layers of materials. The first layer is a glass fiber fabric layer. The second layer is a carbon fiber layer. The third layer is a glass fiber fabric layer. A + / -45-degree angle is formed by the glass fiber fabric layer in the first layer and the glass fiber fabric layer in the third layer, and the carbon fiber layer in the second layer is clamped between the glass fiber fabric layer in the first layer and the glass fiber fabric layer in the third layer. Carbon fibers are used, therefore, the weight of the wind power blade is reduced, the rigidity is improved, the aerodynamic performance of the wind power blade is improved, and loads on a tower and a blade shaft are reduced. Therefore, the output power of a fan is smooth and balanced, and the energy efficiency is improved. Meanwhile, the carbon-fiber blade is thin, the appearance design is effective, the wind power blade is thin and long, and the energy output efficiency is also improved.

The invention discloses an annular engine which comprises a first rotating body and a second rotating body. The first rotating body is provided with at least two rotating body blades, the second rotating body is provided with at least two rotating body blades, the first rotating body and the second rotating body can be connected in a relatively rotating mode, an annular cavity for accommodating the rotating body blades to rotate is arranged between the first rotating body and the second rotating body, the four rotating body blades enable the annular cavity to be divided into at least four enclosed spaces capable of changing dynamically, and the first rotating body and / or the second rotating body are or is respectively connected with a power output shaft through ratchet wheels. The annular engine has the advantages of being compact in structure, small in vibration, high in efficiency, stable in operation, convenient to maintain and excellent in mechanical performance. Compared with an existing engine, fuel availability and whole mechanical performance of the annular engine are improved greatly.

The invention discloses a three-dimensional space multi-node power balance wireless power supply system and method. For a system with a disk spiral structure, a transmitting coil is placed under receiving coils at the same height in a three-dimensional space, and therefore, the receiving coils at the same height are symmetrically arranged around the axis of the corresponding transmitting coil. Intransmitting coils of different heights, only a transmitting coil of the lowest layer is energized, and the rest transmitting coils are used as relay transmitting coils and are not energized. When power is supplied, firstly, a correspondence relationship that the mutual inductance changes with a distance between the transmitting coils and the relay transmitting coils is established, a limiting condition of a mutual inductance value between the transmitting coils and the relay transmitting coils when all load receiving power are the same is determined, then the loop resistance of the transmitting coils and the relay transmitting coils is weakened or enhanced to adjust the mutual inductance value between two coils satisfying the limiting condition, therefore, the mutual inductance value conforms to the correspondence relationship with the distance between the coils, and power balanced wireless power supply is realized. The disadvantage of excessive current at a power supply terminal during power equalization is overcome.

The invention relates to a balanced modulation method suitable for a cascaded H-bridge multi-level inverter, and belongs to the technical field of PWM (Pulse Width Modulation) of a multi-level converter. According to the method, based on a double triangular carrier period, a triangular carrier is periodically circulated between different carrier layers, and compared with a sinusoidal modulation wave, an optimized pulse signal is generated. According to the method, the power balance control of each cascade unit can be realized, the direct current side power supply discharge is kept consistent, and the quality of the output voltage of the inverter is further improved; the time required for power equalization can be reduced; and meanwhile, the optimal line voltage harmonic elimination performance can also be realized. In addition, the method can be expanded to n cascade units, so that the practicability of the inverter is improved.

The invention provides a voltage adjustment method, a direct-current microgrid and a computer readable storage medium. The method comprises the steps of determining an energy storage unit in a charging state as an energy storage target unit, and obtaining a voltage reference value, a current state-of-charge value, an influence coefficient and an average state-of-charge value corresponding to the energy storage target unit; determining a voltage adjustment value according to the influence coefficient, the voltage reference value, the state average value and the current state-of-charge value; obtaining output power corresponding to the energy storage target unit and a preset droop coefficient; constructing a corresponding relationship among the voltage adjustment value, the output power, thedroop coefficient and the bus voltage of the direct-current microgrid; and if it is determined that the current state-of-charge value is not in the preset range, adjusting the voltage reference valuebased on the corresponding relationship to adjust the bus voltage so as to enable the bus voltage to be within the preset voltage range. The service life of a battery corresponding to the energy storage unit in the direct-current microgrid is prolonged, and the stability and robustness of the direct-current microgrid are improved.

The invention discloses a frequency stabilizer for a multi-wavelength fiber laser. The frequency stabilizer is characterized in that an adjustable light source (1), a first optical coupler (2), a first optical circulator (4), a wavelength division multiplexer (7), a second optical circulator (9), a high-nonlinearity optical fiber (10) and a pumping light source (11) are included, the adjustable light source (1), the first optical coupler (2), the first optical circulator (4), the wavelength division multiplexer (7), the second optical circulator (9) and the high-nonlinearity optical fiber (10)are sequentially connected, and the pumping light source (11) is connected with the wavelength division multiplexer (7). According to the frequency stabilizer, fiber system integration is easy, the output power of the multi-wavelength fiber laser is effectively balanced, and the output bandwidth of the multi-wavelength fiber laser is increased.

The invention discloses a solar heat energy power system based on an eccentric turbine. The solar heat energy power system comprises a heat collection device, a gasifying device, the turbine, a condensation device and a one-way hydraulic pump, all of which are in circular communication sequentially through a circulation pipeline; circular working media are contained in the circulation pipeline, the heat collection device and the gasifying device are mounted in a solar light condensing cover, the condensation device is arranged outside the solar light condensation cover, the eccentric turbine comprises a turbine main case, a rotating turbine structure, an air inlet and an exhaust opening, a rotating shaft of the rotating turbine structure is eccentrically mounted in the turbine main case, and the air inlet and the exhaust opening are distributed in the two radial sides of the turbine main case. The solar heat energy power system based on the eccentric turbine has the beneficial effects of being high in heat energy conversion efficiency, large in turbine torque, adjustable in power and the like.

The invention discloses a method and system for regulating power balance of a remote adhesive tape conveying machine. The remote adhesive tape conveying machine adopts a hydraulic motor head-tail cooperation drive mode. The method for regulating the power balance comprises the steps of: respectively obtaining operation parameters of a machine head motor and a machine tail motor, wherein the operation parameters comprise oil pressure values and rotating speeds of the machine head motor and the machine tail motor; determining the oil pressure proportion of the machine head motor and the machine tail motor; when the oil pressure is not in a preset range, determining the expect rotating speed of the machine tail motor according to the oil pressure proportion and the rotating speed of the machine head motor; and regulating the rotating speed of the machine tail motor to the expect rotating speed by using a proportion integral derivative regulating mode. Compared with the prior art, the invention can improve the operation stability and reliability of the remote adhesive tape conveying machine and enhance the production efficiency.

A multi-cylinder Stirling engine transmission system comprises single-cylinder Stirling engine bodies and a transmission shaft. The transmission shaft is provided with a crank throw. Each single-cylinder Stirling engine body comprises a piston, wherein the piston is in power connection with the crank throw through a connecting rod, and a power unit is formed. The four power units are arranged, a virtual center line perpendicular to the axis of the transmission shaft is arranged, and the included angle is formed by the four power units relative to the virtual center line. The multi-cylinder Stirling engine transmission system has the following beneficial effects that the usage requirement of a multi-cylinder Stirling engine can be met; the structure is compact, output power is uniform, thebalance performance is better, bearing loads are small, and motion reliability is high; a power transmission gear mechanism is eliminated, accordingly, exciting force caused by gear transmission is eliminated, and vibration and noise are further lowered; and meanwhile, mechanical work consumption is reduced, the single-machine power of the Stirling engine can be properly improved, and power density is further improved.

The invention relates to a concave-convex rotor motor, which can supply a motor with better sealing, fully burned fuel, simple structure and stable operation. Two ends of cylinder individually comprises the outer end cover, inner end cover, main axle and auxiliary axle; the inner space of cylinder via the middle baffle plate is divided into at least chambers in same structure, while each chamber is in reverse-8 shape and concentric with the main and auxiliary axles; the main axle of each chamber is connected to a convex-teeth rotor with U-shape sheath; the auxiliary axle is connected to a concave-teeth rotor whose teeth root has a rolling sealing sheet; the tops of said concave-teeth rotor and convex-teeth rotor are slide connected to the inner wall of said chamber; the phase difference between two concave-teeth rotors in two chambers and the phase difference are 180 degree / teeth number; and the middle baffle plate has a spark plug and a fire guide hole. The invention has stable operation, lower noise, improved abrasion degree, prolonged service life, reduced fire delay and better safety.

The invention provides a power supply unit, a power supply device and a power supply system, wherein the power supply unit is a first power supply unit in the power supply device, and the first power supply unit is used for obtaining an actual output voltage of each power supply unit in the power supply device when a load demand current value is higher than an output current limit value of the first power supply unit; determining an output voltage average value according to the actual output voltages of the power supply units; and sending the output voltage average value to each second power supply unit, wherein the output voltage average value is used for each second power supply unit to execute the following operations: determining an output voltage setting value of the second power supply units according to the output voltage average value, wherein the output voltage setting values determined by the second power supply units according to the output voltage average value are the same. The power supply unit provided by the invention is applied to the power supply device with serially connected outputs, so that the balance of output power of different power supply units in the power supply device is favorably maintained, the service life of all the power supply units and the whole power supply device is prolonged, and the reliability of the power supply device is improved.

The invention discloses an improved hybrid modulation method suitable for a hybrid cascaded H-bridge multi-level inverter with a voltage ratio of 1: 1: 2, and belongs to the technical field of PWM of multi-level converters. According to the method, a high-voltage unit and a low-voltage unit are independently controlled, a high-voltage part adopts the step wave modulation to obtain a pulse signal of the high-voltage unit, and a low-voltage part adopts the hybrid modulation combining step wave modulation and PWM modulation, wherein the PWM modulation adopts a single-carrier modulation mode similar to unipolar frequency multiplication. The two modulation methods are sequenced, and the low-voltage unit is modulated in a 1 / 4 period cycle manner to obtain an optimized pulse signal of the low-voltage unit. According to the method, the equivalent switching frequency of the output voltage of the inverter is improved, the power loss consistency of in-phase and inter-phase switching tubes of the low-voltage units is realized, meanwhile, the output power balance control among the low-voltage units is realized, and the practicability of the inverter is improved.

The invention discloses an internal combustion engine tail gas utilization heat energy power system based on honeycomb cavity gasification. The system comprises a gasifying device, a turbine, a condensing device and a one-way hydraulic pump, wherein the gasifying device, the turbine, the condensing device and the one-way hydraulic pump communicate in a circulating mode in sequence through circulating pipes; the circulating pipes are filled with circulating working mediums; a heat collecting device is mounted at the external of the gasifying device, and is communicated with an internal combustion engine tail gas pipe; the gasifying device includes a gasification cavity; the gasification cavity is a cavity for realizing gasification of a working medium in the gasifying device; the gasifying device is positioned in a heat collecting cavity; and the gasification cavity takes the shape of a honeycomb cavity. The internal combustion engine tail gas utilization heat energy power system based on honeycomb cavity gasification has such advantages as high gasification efficiency, high heat energy conversion efficiency and power adjustability.

The invention relates to the electric power electronic technical field, and discloses a DC-DC converting circuit which comprises N unit converting circuits, M inductance units, a circuit input positive terminal, a circuit input negative terminal, a circuit output positive terminal and a circuit output negative terminal. The input positive terminal of the first unit converting circuit is in connection with the circuit input positive terminal through an inductance unit, and is directly in connection with the circuit input positive terminal; the input negative terminal of a Kth unit converting circuit is in connection with the input positive terminal of a (K+1)th unit converting circuit through the inductance unit or is directly in connection with the input positive terminal of a (K+1)th unit converting circuit; K, M and N are all natural numbers, KN, and 1=M=(N+1). The input negative terminal of an Nth unit converting circuit is in connection with the circuit input negative terminal through the inductance unit or is directly in connection with the circuit input negative terminal; the outputs of the N unit converting circuits are in parallel connection or in series connection, and are in connection with the circuit output positive terminal and the circuit output negative terminal. The DC-DC converting circuit reduces the cost, eliminates or reduces common mode interference, realizes interleaving control, decrease input and output current ripples, and is in favor of reducing filters and implementation difficulty.

The invention discloses a heat energy power system comprehensively utilizing waste heat of an acting pump. The heat energy power system comprises a heat source, a gasification reactor, the acting pump, a condenser, a pressure pump and a circulation pipeline. Cyclic communication of the gasification reactor, the acting pump, the condenser and the pressure pump is achieved through the circulation pipeline. The gasification reactor makes contact with the heat source. A preheating cavity is further formed in the front end of the gasification reactor. A pre-condensation cavity is formed in the position of an exhaust port of the acting pump. The preheating cavity and the pre-condensation cavity make contact with each other in parallel. According to the heat energy power system comprehensively utilizing waste heat of the acting pump, the pressure difference between an air inlet and the exhaust port of the acting pump can be increased, and the converting efficiency of a turbine is improved; and meanwhile, the heat of working media in the circulation pipeline is comprehensively utilized, and the heat conversion efficiency is improved.

The invention provides a composite coil which comprises a DD coil, a solenoid coil and a magnetic core, the DD coil is a bipolar coil, two sub-coils of the DD coil are equal in size and opposite in winding direction, and a generated magnetic field is distributed along a coil axis, the magnetic core is arranged below the DD coil, the solenoid coil is wound on the DD coil in parallel, the solenoid coil is a multi-turn rectangular winding, and the solenoid coil and the magnetic core form a solenoid structure. The invention further provides a double-channel wireless power supply system constant current output method based on the coil. Through matching the impedance value of a load, the self-inductance of a transmitting solenoid coil, the resonance inductance of a receiving end, the mutual inductance between a transmitting DD coil and a receiving DD coil, which changes along with the offset in the X direction, and the mutual inductance between a transmitting solenoid coil and the receivingDD coil, which changes along with the offset in the X direction, when the transmitting coil and the receiving coil deviate, the current passing through the load is still kept constant. According to the invention, the defect that the current is seriously reduced under the condition that the transmitting coil and the receiving coil of a traditional WPT system deviate is overcome, the material utilization rate of the resonant inductor is improved, and the space occupied by the transmitting coil is saved.

The present disclosure relates to a DC-DC converter and a control method thereof, including an input terminal, an output terminal, a plurality of parallel conversion modules, and a main control board; the main control board is connected to each of the conversion modules; the The main control board is used to output power according to demand, and allocate power to each of the conversion modules, wherein the sum of the output powers of each of the conversion modules is the actual output power of the output terminal. In this way, the required output power is obtained through the main control board, and then according to the required output power, power is allocated to each conversion module, and each conversion module outputs corresponding power according to the distribution of the main control board. In this way, the output power of each conversion module can be balanced, so as to ensure the load balance of each conversion module.

The present invention provides a power supply unit, a power supply device, and a power supply system. The power supply unit is the first power supply unit in the power supply device. The first power supply unit is used for when the load demand current value is higher than the output current limit value of the first power supply unit. Obtain the actual output voltage of each power supply unit in the power supply unit; determine the average output voltage according to the actual output voltage of each power supply unit; send the average output voltage to each second power supply unit, and the average output voltage is used for each The second power supply unit performs the following operation: the output voltage setting value of the second power supply unit is determined according to the average value of the output voltage, and the output voltage setting values ​​determined by each second power supply unit according to the average value of the output voltage are the same. The power supply unit provided by the present invention is applied in a power supply unit with output in series, which is beneficial to maintain the output power balance of different power supply units in the power supply unit, and improves the service life of each power supply unit and the entire power supply unit and the reliability of the power supply unit.

A tunable distributed feedback (DFB) semiconductor laser based on a series mode or a series and parallel hybrid mode. A grating structure of the laser is a sampling Bragg grating based on the reconstruction-equivalent chirp technology. DFB lasers with different operating wavelengths based on the reconstruction-equivalent chirp technology are integrated together by a sampling series combination mode or a series / parallel hybrid mode, one of the lasers is selected to operate via a current, and the operating wavelength of the laser can be controlled by adjusting the current or the temperature, so that the continuous tuning of the operating wavelengths of the lasers can be realized. Various wavelength signals in parallel channels are coupled and then output from the same waveguide. An electrical isolation area (1-11) is adopted between lasers connected in series or lasers connected in series and connected in parallel to reduce the crosstalk between adjacent lasers.

The invention discloses a gas heat energy power system based on honeycomb cavity gasification. The gas heat energy power system based on honeycomb cavity gasification comprises a gasifying device, a turbine, a condensing device and a one-way hydraulic pump for realizing circulating communication through circulating pipes; circulating working mediums are filled in the circulating pipes; the heat collecting device is mounted at the external of the gasifying device, and is communicated with a gas heating furnace; the gas heating furnace includes a gas inlet, an air inlet, a mixed gas combustion cavity and an igniter; the gasifying device includes a gasification cavity; the gasification cavity is a cavity for realizing gasification of a working medium in the gasifying device; the gasifying device is positioned in a heat collecting cavity; and the gasification cavity takes the shape of a honeycomb cavity. The gas heat energy power system based on honeycomb cavity gasification has such advantages as high gasification efficiency, high heat energy conversion efficiency and power adjustability.

The invention discloses a voltage control method for a power distribution network with energy storage. The method comprises the steps of measuring node voltage of a power distribution network, performing power control on inverters when the measured voltage exceeds a limit, enabling the utilization rates of the inverters to be the same by taking the utilization rates of the inverters as a consistency target, and adjusting the voltage according to the power of the inverters; and if the voltage is still not within a safety threshold or the standby capacity of the inverter is insufficient, entering charge and discharge power control of energy storage, and controlling the charge and discharge rate in combination with the consistency target of the utilization rate of the energy storage battery and SoC local information until the node voltage reaches the safety threshold range. According to the voltage control method for the power distribution network with energy storage, the power regulation of the inverters and the charging and discharging power control of the energy storage are combined, and the consistency target is combined, so that each inverter and the energy storage are discharged in a balanced manner, the node voltage of the power distribution network system is ensured to be within a safety threshold, and the operation reliability and safety of the power distribution network system are improved.

The invention discloses a honeycomb cavity gasification heat energy power system using nuclear power plant hot drained water. The system comprises a heat collecting device, a gasifying device, a turbine, a condensing device and a one-way hydraulic pump, wherein the heat collecting device, the gasifying device, the turbine, the condensing device and the one-way hydraulic pump communicate in a circulating mode in sequence through circulating pipes; the circulating pipes are filled with circulating working mediums; the heat collecting device and the gasifying device are mounted in a nuclear power plant hot drainage way; the condensing device is mounted in a deep water low-temperature area; the gasifying device includes a gasification heat sucking cavity; the gasification heat sucking cavity is a cavity for realizing gasification of a working medium in the gasifying device; the gasifying device is positioned in a heat collecting cavity; and the gasification heat sucking cavity takes the shape of a honeycomb cavity. The honeycomb cavity gasification heat energy power system using nuclear power plant hot drained water has such advantages as high gasification efficiency, high heat energy conservation efficiency and power adjustability.

The invention discloses a novel power balance modulation strategy suitable for a cascaded H-bridge multi-level converter, and belongs to the technical field of multi-level PWM converters. The method is based on the idea of carrier reconstruction and carrier degree-of-freedom recombination, and comprises the following steps: firstly, reconstructing three triangular carriers so that the three triangular carriers are uniformly distributed among different layers for periodic circulation; secondly, adjusting the vertical degree of freedom of the sinusoidal modulation wave; and comparing the modulated wave with a carrier wave to obtain an optimized PWM pulse signal. According to the method, power balance among the output units can be realized, so that direct-current voltage discharge is kept consistent, and the output voltage quality of the converter is improved; the time required for balancing is shortened to the maximum extent; and meanwhile, the consistency of the average switching frequency is also realized. In addition, the method can be expanded to n cascade units, so that the practicability of the converter is improved.

The invention discloses a biological fermentation heat energy power system based on honeycomb cavity gasification. The biological fermentation heat energy power system comprises a heat collection device, a gasification device, a turbine, a condensing unit and a one-way hydraulic pump which circularly communicate with one another sequentially through circulation pipelines. The circulation pipelines internally contain a circulation working medium. The heat collection device and the gasification device are installed in a biological fermentation pool, and the condensing unit is installed outside the biological fermentation pool. The gasification device comprises a gasification heat absorbing cavity which is a cavity where a working medium in the gasification device achieves gasification, the gasification device is located in a heat collection cavity, and the gasification heat absorbing cavity is in a honeycomb cavity shape. The biological fermentation heat energy power system based on honeycomb cavity gasification has the beneficial effects that the gasification efficiency is high, the heat energy conversion efficiency is high, and the power is adjustable.