136 results about "Hybrid type" patented technology

The disclosure relates to hybrid unmanned aerial vehicle (UAV) having vertical take-off and landing (VTOL) capabilities. Specifically, the disclosure relates to a stable hybrid fixed angle rotor arrays UAV having VTOL capabilities with hovering capabilities using rotors and cruising using fixed wing.

The invention discloses a high-temperature-stripping-resistant epoxy structural adhesive as well as a preparation method and application thereof, and belongs to the technical field of high-performance composite materials. The epoxy structural adhesive comprises bisphenol A type epoxy resin, novolac epoxy resin, polysiloxane-polyurethane modified epoxy resin, core-shell modified epoxy resin, PEEK ultrafine powder and other components, and through mutual cooperation of all the components, the problems that in a high-temperature service environment, the adhesive layer modulus of traditional adhesive is rapidly attenuated, and a bonding interface is prone to failure are solved; the epoxy structural adhesive provided by the invention has both rapid curing and heat resistance, is stable in interface bonding, has the highest modulus of 1.28 GPa at 80 DEG C, the highest peel strength of 7.8 N / mm at 80 DEG C, and a damage mode of cohesion or high-proportion mixed damage, and is especially suitable for structural bonding requirements of harsh scenes such as peripheral structures of automobile engines, high-temperature areas of electronic equipment and the like.

The invention discloses an aircraft performance constraint compliance control method for contact type nondestructive testing, and belongs to the field of aircraft control. The implementation method comprises the following steps: introducing a saturated contact force controller into a position ring, and dynamically adjusting a confidence factor based on a position error to adaptively adjust normal rigidity and tangential flexibility; a zero-order control barrier function ZOCBF restrains the force controller, a three-dimensional dynamic safety boundary is established by using a sampling data mechanism, and the position, speed and contact force of the unmanned aerial vehicle are optimized and limited through quadratic programming; designing a hybrid torque controller in the attitude ring, and dynamically selecting a balance point through a binary logic switching strategy; the controller performs safety limitation on the attitude and angular velocity of the unmanned aerial vehicle in combination with zero-order control obstacle function constraint; monitoring a quaternion scalar component symbol in real time by defining a manifold switching set and a jump set; by fusing position loop and attitude loop control logic, compliance control during contact-type nondestructive testing of the unmanned aerial vehicle is realized.

The invention discloses an impedance-adjustable series hybrid cascade static synchronous compensator and a control method thereof. The method comprises the following steps: acquiring grid-connected point voltage and load current information, and performing positive and negative sequence component analysis on the grid-connected point voltage and load current information; calculating a compensation line current component with the same size and opposite phase as the positive and negative sequence components of the load current so as to compensate the reactive power and the negative sequence current of the grid-connected point load; zero-sequence injection current used for in-phase active power balance is calculated, and reference operation current of each cascade branch is obtained; calculating the output reactive power of each phase based on the cascade branch voltage of each phase and the reference operation current, calculating the corresponding trigger angle of each phase thyristor under the condition that the adjustable impedance bears all phase voltages and generates all reactive power, and generating a pulse control signal to realize the control of the adjustable impedance; and each phase cascade converter adopts quasi-proportional resonance control to track the reference operation current, and generates a corresponding PWM signal to respectively control each phase cascade converter.

The present invention discloses a hybrid energy storage capacity optimization configuration method for smoothing wind power fluctuations, which belongs to the field of wind power generation technology, including: clustering wind power output data based on the K-means clustering algorithm to obtain a variety of wind power output scenarios; decomposing wind power output data based on the empirical mode decomposition method to obtain multi-order intrinsic mode functions, and reconstructing them into low-frequency components and high-frequency components, the low-frequency components are directly connected to the grid, and the high-frequency components are used as the power task of the hybrid supercapacitor energy storage system, and the hybrid supercapacitor energy storage system is defined as the target system; establishing a capacity configuration model for the target system, and constructing the optimization objective function and model constraint set of the capacity configuration model based on the cost input and constraint conditions of the target system; solving the capacity configuration model based on the genetic algorithm to obtain the initial optimization result, introducing a variable baseline and a fluctuation penalty coefficient, and performing further optimization. The present invention improves the efficiency of smoothing wind power fluctuations.

The invention provides a novel driving circuit for a heterogeneous hybrid device, and the circuit comprises an upper computer, a field programmable gate array, a SiC MOSFET driving voltage control module, a Si IGBT driving voltage control module, a power module, a first driving positive voltage generation circuit, and a first driving negative voltage generation circuit. The system comprises a first driving positive voltage generation circuit, a first driving negative voltage generation circuit, a second driving positive voltage generation circuit, a second driving negative voltage generation circuit, a switch time sequence switching module, a SiC MOSFET driving chip, a Si IGBT driving chip, a SiC MOSFET switching tube and a Si IGBT switching tube. The novel driving circuit for the heterogeneous hybrid device provided by the invention has the functions of switching multiple switch time sequences and switching multi-stage driving voltage, and can meet the requirements in different application scenes.

The invention belongs to the technical field of offshore wind power direct current transmission, and discloses a fault ride-through method, equipment and a medium, and the method is applied to a hybrid offshore wind power direct current delivery system composed of an offshore hybrid commutation platform, a seabed direct current cable and an onshore inverter station. The land inverter station is an MMC converter station; the offshore hybrid commutation platform is formed by connecting a diode rectification unit and an MMC unit in parallel, the rated capacity of the diode rectification unit is 85%-95% of the rated capacity of the system, and the rated capacity of the MMC unit is 5%-15% of the rated capacity of the system; the method comprises the following steps: monitoring DC and AC bus voltages in real time to judge a system fault state; triggering a corresponding fault ride-through mode based on the system fault state; the fault ride-through mode comprises the step of changing the operation mode of the MMC unit of the offshore hybrid commutation platform so as to realize fault ride-through. The MMC unit is utilized to make up for the defect that a diode rectification unit lacks controllability, and optimal balance of economical efficiency and fault ride-through performance is achieved.

The application discloses a method for controlling hybrid MMC sub-modules to clear DC short-circuit fault current. The method detects the real-time size of AC voltage, calculates the bridge arm voltage according to the principle of limiting AC current change and not affecting the speed of DC fault current clearing, and determines the number of improved sub-modules (sub-modules capable of providing counter electromotive force, such as full-bridge sub-modules) in each bridge arm according to the bridge arm voltage. Compared with the conventional method of directly locking all sub-modules to clear DC fault current, the application reduces the bridge arm current during the DC fault current clearing process, alleviates the overvoltage of the improved sub-modules, limits the influence on the speed of DC fault clearing, and improves the safety of the hybrid modular multilevel converter during the process of clearing DC fault current.

The application belongs to the field of supercapacitors, and more particularly relates to a high-capacity hybrid supercapacitor with uniform heat distribution for special vehicles. The structure of the hybrid supercapacitor comprises a positive electrode sheet, a negative electrode sheet, a positive electrode tab, a negative electrode tab, a diaphragm and a container shell. The supercapacitor provided in the application is designed to be large in size, not only meeting the high energy requirement of the special vehicle, but also effectively solving the connection problem of the small-size hybrid supercapacitor, and meeting the high power and rapid charging requirement which cannot be met by the lithium ion battery.

The present invention belongs to the field of new energy vehicles, and provides a hybrid radiator for a new energy vehicle battery, which includes a heat exchanger, a fan, a circulation pump, a battery pack and a liquid cooling system. The battery pack includes a chassis, a top cover, a cold bridge bracket and side guard plates distributed on both sides of the cold bridge bracket. The liquid cooling system includes a liquid cooling top plate, a semiconductor refrigeration component, an inlet and outlet liquid cooling plate, a water inlet well box, an outlet pipe, a liquid cooling bottom plate and a liquid cooling partition plate. The liquid cooling partition plate includes an upper partition plate section and a lower partition plate section. Two adjacent liquid cooling partition plates are distributed between the cross gaps of four battery packs and on both side surface orientations. The present invention can use the liquid cooling partition plate to perform liquid cooling on the battery pack from the side of the battery pack. Coupled with the heat dissipation effects of the liquid cooling bottom plate and the liquid cooling top plate, and supplemented by the semi-conductor refrigeration that can be adjusted up and down, the heat dissipation performance of the battery pack can be effectively improved; the cold bridge formed by the cold bridge bracket can conduct heat dissipation partition on the inside of the battery pack, which can further improve the heat dissipation efficiency of the battery pack and is beneficial to extending the service life of the battery.

The utility model provides a hybrid reactive power compensation cabinet body, and belongs to the technical field of power electronics. The protection box body can be used for installing and protecting the reactive compensation module; the reactive power compensation module is arranged in the protection box body, comprises an SVG compensation unit, an SVC compensation unit and a controller, and is used for solving reactive power compensation in a power utilization system; the fixing base is fixedly connected to the side end of the protection box body and can be used for installing the dust blocking fence. The square fence grooves are formed in the side ends of the protection box body and the fixing base and can be used for protecting the air permeability in the box body. In the process of using the reactive power compensation module, the dust blocking fence can be taken out by pulling the connecting strip, after the surface of the dust blocking fence is cleaned, the dust blocking fence can slide into the sliding groove, meanwhile, the two first suction blocks are connected with the two second suction blocks in a matched mode, the dust blocking fence is installed and fixed, the reactive power compensation module does not need to be paused, and operation is convenient. And the heat dissipation fence can be directly cleaned, and the cleanliness of the heat dissipation fence can be effectively improved.

The invention discloses an open winding motor power decoupling control device and method based on a Z-source inverter, and relates to the technical field of motor control. The control device is controlled by a power supply hybrid open winding motor; the method comprises three core links: 1, direct-current chain voltage closed-loop control with a reference value updating link, wherein the amplitude of a direct-current chain can be dynamically stabilized only by sampling capacitor voltage; according to the Z-source inverter modulation strategy, specific switch switching points are calculated for different sectors, and harmonic interference introduced by straight-through vectors is restrained; and 3, separating active and reactive voltage components based on a power decoupling algorithm of vector coordinate operation to realize power distribution. According to the invention, the complexity of a control algorithm is simplified, the feedback input quantity is reduced, and the anti-interference capability and the operation stability of the system are improved.

The utility model discloses a hybrid energy supply device which comprises an energy supply box body, a diesel generator, an energy storage battery pack and an electric heating steam generator are installed at the inner bottom of the energy supply box body, and the diesel generator is transversely fixed to the left rear side of the interior of the energy supply box body and used for generating electric energy by burning diesel oil. The energy storage battery pack is fixedly installed on the left front side in the energy supply box, one side of the energy storage battery pack penetrates through the energy supply box, and the electric heating steam generator is fixed to the right side in the energy supply box and used for converting electric energy into heat energy and generating steam for printing and dyeing equipment to use. A controller is installed on the front side portion of the energy supply box body and connected with the diesel generator, the energy storage battery pack and the electric heating steam generator through cables of an internal circuit board. The utility model belongs to the technical field of energy supply, and particularly relates to a mixed type energy supply device.

The invention discloses a control method and device of a mixed type heat pump device and the mixed type heat pump device. The control method of the mixed type heat pump device comprises the steps that the operation mode of the mixed type heat pump device is obtained; when the operation mode is a simultaneous heating and water heating mode, a first outlet of the three-way valve is controlled to be closed, an inlet of the three-way valve is controlled to be communicated with a second outlet, and the heat pump is controlled to start to operate, so that the heat pump heats water in the water tank; and controlling the first inlet of the water mixing valve to be closed, controlling the second inlet of the water mixing valve to be communicated with the outlet of the water mixing valve, and controlling the boiler to start to operate, so that the boiler heats the liquid flowing into the indoor unit. According to the hybrid heat pump device, the situation that water storage of the water tank is insufficient or the indoor temperature fluctuates due to mutual influence of heating and water heating can be avoided, meanwhile, the problem that the indoor temperature of the environment where the indoor unit is located in an existing hybrid heat pump device is likely to drop or rise slowly is solved, and the user comfort and the user experience are improved.

The invention discloses a fault processing method and device, a flexible direct current system and a storage medium, and relates to the technical field of system control. The method is applied to a flexible direct current system comprising a hybrid MMC, and comprises the following steps: when an MMC direct current fault occurs, obtaining a direct current side fault current and a fault voltage in real time; judging whether a first preset condition is met or not according to the fault current and the fault voltage; if yes, performing locking control on the MMC to realize fault isolation; otherwise, continuously judging whether a second preset condition is met according to the fault voltage; if yes, negative voltage control is carried out on the MMC, and fault ride-through is realized; otherwise, controlling the MMC to work normally; in the fault ride-through process, whether a third preset condition is met or not is judged according to the fault current; if yes, zero-voltage control is carried out on the MMC so as to recover normal work of the MMC; otherwise, performing locking control on the MMC to realize fault isolation. The invention provides a rapid and reliable flexible direct current fault processing method on the system level.

To provide a hybrid unmanned aerial vehicle (UAV) having vertical take-off and landing (VTOL) capabilities.SOLUTION: Specifically, the disclosure relates to a stable hybrid fixed angle rotor arrays UAV having VTOL capabilities with hovering capabilities using rotors and cruising using fixed wing.SELECTED DRAWING: Figure 1A

The invention discloses a series-parallel hybrid five-port energy router capable of realizing transformer area interconnection and a control method of the series-parallel hybrid five-port energy router. The five-port energy router comprises four low-voltage alternating current ports AC1, AC2, AC3 and AC4, a direct current port DC, two parallel converters PCM1 and PCM3, and two series converters SCM2 and SCM4. AC ports of the PCM1 and the PM3 are respectively connected with the AC1 and the AC3, and AC ports of the SCM2 and the SCM4 are respectively connected with the AC2 and the AC4 through series transformers; dC ports of the PCM1, the SCM2, the PCM3 and the SCM4 are connected together to form a common DC bus; dC is led out from the common DC bus. The five-port energy router supports parallel connection-series connection and parallel connection-parallel connection power flow mutual aid modes, DC bus voltage is stabilized through the PCM, reactive power and active power are controlled through the PCM, voltage amplitude and phase control active power flow are adjusted through the SCM, and the required configuration capacity is small. According to the invention, the flexible interconnection of the low-voltage transformer area can be realized, the dynamic capacity increase of the transformer area and the fault rapid transfer are realized, and the power supply reliability and the distributed power supply acceptance capability are improved.

The invention discloses a warning method and device for thermal runaway of a vehicle battery pack, a storage medium and a vehicle, and the vehicle comprises the battery pack used for providing power for the vehicle and a thermistor used for monitoring the temperature of the power battery pack. Acquiring a target driving style of a driver of the vehicle and acquiring a target temperature value of the thermistor in real time, wherein the target driving style comprises one of a fierce driving style, a mild driving style and a mixed driving style; correspondingly determining target warning information based on the size relationship between the target temperature value and the temperature threshold value and the target driving style of the driver, wherein the target warning information at least comprises one of first warning information, second warning information and third warning information with different danger levels; and sending the target warning information to a corresponding terminal. By applying the technical scheme of the invention, the probability that the battery management system misjudges the thermal runaway of the battery pack can be reduced.

The application discloses a low-temperature oil-free centrifugal compressor placed in an adiabatic environment, comprising an adiabatic cold box, a centrifugal compressor unit, connecting pipelines and a vacuum pump. The centrifugal compressor is placed in the adiabatic cold box and comprises a motor, an impeller, a volute and a bearing. The impeller and the motor at two ends of the centrifugal compressor are placed in different chambers of the adiabatic cold box. The centrifugal compressor can adopt the same rotor structure at two ends. The motor does not need to be cooled. The centrifugal compressor is provided with a motor heat preservation loop. The bearing adopts a gas bearing or a gas-magnetic hybrid bearing, and the gas bearing type is full dynamic pressure, dynamic-static pressure or full static pressure. The low-temperature oil-free centrifugal compressor placed in the adiabatic environment can greatly reduce the power consumption and cold leakage loss of the compressor. The compressor with the same structure at two sides does not need to consider the axial force. Through the measures of setting different adiabatic chambers and heat preservation loops, the compressor can operate at an import temperature of -268 to -20 DEG C. The low-temperature centrifugal compressor is purely oil-free, and the system volume and weight are greatly reduced.

A system and method for a single integrated control solution for ducted and ductless HVAC systems which seamlessly connects the ductless and ducted HVAC units coming from various brands, with no restriction in what brand or HVAC unit the consumers use. The integrated control solution can control all of the units automatically based on settings established or selected by the user, and can be as simple or complex as the user desires.

The application discloses a flying car wing and rotor hybrid type folding and unfolding system and a flying car, which comprises a car body, two side wings, a wing rotating mechanism, a rotor support, a rotor support rotating mechanism and a rotor assembly; the wings are movably connected to the car body; the wings and the wing rotating mechanism are symmetrically arranged on the car body, and the wing rotating mechanism drives the wings to rotate and unfold to the two sides of the car body or reversely rotate and fold to the inner side of the car body, so that the wings do not exceed the wing edges, and the conversion between the automobile working state and the flying working state of the wings can be completed; the rotor support is movably connected to the wings, and the rotor support is rotated by starting the rotor support rotating mechanism, so that the rotation of the rotor support on the wing surface is realized. The flying car can realize super-short distance take-off and landing and stable flight in the air. In addition, when driving on the ground, the wings and the rotor can be folded and placed in the inner side of the car body, space is saved, the appearance is beautiful, and the ground automobile use requirements are met.

The invention discloses a fault-tolerant sensorless control method for a dual three-phase synchronous reluctance motor, and the method carries out the filtering of an observation flux linkage after an open-circuit fault based on a second-order generalized integrator with a frequency-locked loop, and achieves the purpose of improving the position-less control performance of the dual three-phase synchronous reluctance motor after the open-circuit fault. According to the invention, the hybrid flux linkage observer based on SOGI-FLL is adopted to carry out adaptive compensation on harmonic distortion under a single-phase open-circuit fault condition, so that the precision of flux linkage observation and rotor position estimation is improved. Compared with a traditional position-free control method, the three-time flux linkage harmonic caused by an open-circuit fault can be effectively inhibited, and the position observation precision and stability are remarkably improved. Meanwhile, high-precision position estimation can still be kept under the low-speed and zero-speed working conditions, the position-free stable operation speed range of the dual three-phase synchronous reluctance motor is expanded, and the method is suitable for high-reliability position-sensorless control application under various operation conditions such as the healthy working condition and the single-phase open-circuit fault.

The invention discloses a lift-drag hybrid airfoil blade with both lift and drag characteristics, the hybrid blade is fixedly mounted on a fan, is used as a rotating component of the fan, and comprises a blade front end piece, a blade rear end piece, a blade window and a blade mounting and fixing piece; the blade rear end piece is composed of an outer wall and an inner wall, the outer wall and the inner wall are connected in a matched mode, and a plurality of blade windows with the same size are evenly formed in the inner wall from top to bottom. According to the blade window, the characteristics of an original lift type airfoil structure are changed, meanwhile, the blade window can absorb flowing air, so that the air generates resistance on the mixed type blade, the mixed type blade is pushed to rotate through flowing of the air, and the characteristics of a resistance type airfoil structure are shown. The double characteristics of the lift-drag wing type structure are utilized, under different fan rotating speeds, by changing the running state of the structure, the resistance type characteristic of the structure is more obvious under the low rotating speed, and the lift type characteristic of the structure is more obvious at the high speed.

The application discloses a hybrid regenerative braking energy absorption system and a control method thereof. The system has three different branches, namely a branch one feeding back to a 400V power distribution system, a branch two feeding back to a secondary side 1180V loop of a rectifier transformer and a branch three storing regenerative braking energy by using an energy storage unit. The regenerative braking energy is firstly supplied to a low-voltage power and lighting system through the branch one. If the braking energy is greater than the rated capacity of the branch one, the excess energy is fed back to a high-voltage AC power grid through the branch two and the rectifier transformer for a traction substation high-voltage. If the regenerative braking energy is greater than the capacity of the entire feedback part, resulting in continuous increase of the traction grid voltage, the excess energy is stored by the energy storage unit. Any branch in the system can be operated independently, and the required floor area is small, so that the system is convenient to access the already operated urban rail transit traction substation.

The embodiment of the invention provides a hybrid converter and an adaptive control method and device thereof. The method comprises the steps that real-time working condition data of the hybrid converter are detected and obtained in real time, the real-time working condition data comprise output voltage, input voltage and load current, target control parameters of the hybrid converter are obtained according to the output voltage, the input voltage and the load current, and the hybrid converter is controlled according to the target control parameters. And generating a pulse width modulation signal for driving a full-bridge switching tube in the hybrid converter. The method is used for achieving the effect of improving the efficiency of the hybrid converter in a full-load range.

The application belongs to the field of material mechanical property experiment, and discloses a universal clamp for a testing machine for mixed adhesive interface testing, which comprises two clamp assemblies with the same structure, each clamp assembly comprising a clamp, upper and lower pins and symmetrically arranged gaskets; the clamp is connected with the testing machine through threads and locked by a nut; the main body of the clamp is provided with a pin through hole, the pin passes through the pin through hole on one side of the clamp, the pin hole on the gasket, the pin hole on the test piece, the pin hole on the gasket arranged on the other side, and the pin through hole on the other side of the clamp, and then the test piece is limited and installed; and the gasket and the test piece are locked by a bolt, and the positioning of the test piece is realized. The application can be installed on a universal tensile testing machine and an electric fatigue testing machine, and the designed upper and lower clamps, pins and gaskets can realize the mechanical testing of the mixed lap joint interface.

A plug deployable into a wellbore having a casing string includes a sealing element including an outer sealing surface configured to extend outwardly from a central axis of the plug and sealingly press against a casing string when the plug is in the second configuration, and a slip including at least one slip body having a peripheral outer face oriented to face away from the central axis and towards the casing string, and one or more engagement members located on the outer face of the slip body wherein the one or more engagement members are configured to bite into the casing string when the plug is in the second configuration, wherein at least 40% of a total volume of the plug is formed from corrosion-selected materials and at least 30% of the total volume of the plug is formed from corrosion-resistant materials.

The invention relates to a vehicle tire (10) whose tread (12) comprises a base (20) and an outer cover layer (22) and includes on its sides a first shoulder region (24) and a second shoulder region (26) as well as a central region (28) arranged between them, wherein the cover layer (22) comprises an outer surface region (30) and an inner region (32) located underneath, wherein the surface region (30) in the first shoulder region (24) is formed by a first rubber material, wherein the surface region (30) in the second shoulder region (26) is formed by a second rubber material, wherein the inner region (32) in the central region (28) is formed by a third rubber material different from the first and second rubber materials, wherein the third rubber material has a higher storage modulus E' than the first and second rubber materials.wherein a first part of the profile blocks (16) are spiked SR profile blocks (34), wherein a second part of the profile blocks (16) are unspiked NW profile blocks (38), wherein the SR profile blocks (34) are arranged in the central area (28) to a degree of 80% or more, with respect to their number, and wherein the spikes (36) of SR profile blocks (34) arranged in the central area (28) extend into the third rubber material.

The invention provides a series-parallel hybrid flexible interconnection device and an operation method thereof. An apparatus may include a first transformer, a second transformer, and a switch array adjustment mechanism. The first transformer is connected in series with the distribution line, the second transformer is connected in parallel with the distribution line, and the switch array adjusting mechanism is connected with the second transformer. Wherein the switch array adjusting mechanism comprises a plurality of adjusting branches which are connected in parallel, and each adjusting branch comprises a first switch unit and a second switch unit which are connected in series. According to the invention, fault-tolerant operation of the series-parallel hybrid flexible interconnection device can be realized, even if any switch unit fails, the series-parallel hybrid flexible interconnection device is not directly caused to quit operation, and the power supply reliability of a power distribution network where the device is located is improved.

The invention provides a composite biomass fuel for a fuel cell as well as a preparation method and application of the composite biomass fuel, and relates to the technical field of fuel cells. The composite biomass fuel for the fuel cell comprises a biomass material, molten carbonate and basic carbonate. According to the composite biomass fuel for the fuel cell, the electricity generation efficiency of the molten carbonate-solid oxide mixed type fuel cell can be remarkably improved, and an innovative technical solution is provided for efficient utilization of the biomass fuel cell.