18 results about "Hybrid type" patented technology

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 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.

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.

The invention relates to a management method for managing the running implementation of a motor vehicle (10) of hybrid type, equipped with a drive train (10') comprising: - an internal combustion engine (11) fitted on an axle (13) of the motor vehicle, coupled to a catalyst (14), a traction electric machine (12) electrically connected to a battery (18), a clutch (16), and a gearbox (15), - after a command requiring the implementation of a movement of the motor vehicle (10), the method comprises: - a measurement step for measuring the temperature (Tcat) of the catalyst (14), - a determination step for determining the charge level (Nch) of the battery, and - an authorization or non-authorization step for authorizing or not authorizing the movement implementation of the motor vehicle (10) as a function of the measured temperature (Tcat) of the catalyst (14) and as a function of the previously determined charge level (Nch) of the battery (18).

A microgrid system includes a plurality of energy resource systems including direct current (DC) energy resource systems and alternating current (AC) energy resource systems configured to supply power to the microgrid, a plurality of local controllers respectively associated with the energy resource systems for controlling the respective energy resource systems, and a microgrid controller. Each local controller is configured to determine an available output power of the respective energy resource system based on one or more operational constraints and send an indication of the available output power to the microgrid controller. The microgrid controller is configured to determine a net available DC output power available from the DC energy resource systems and a net available AC output power available from the AC energy resource systems based on the available output power indicated by each local controller.

This invention discloses a fault ride-through method for a hybrid offshore wind power bipolar flexible DC transmission system. Specifically designed for hybrid offshore wind power bipolar flexible DC transmission systems using diode converters in the sending-end negative converter, this method, through the coordinated control of the sending-end positive MMC converter, the receiving-end positive MMC converter, the receiving-end negative MMC converter, and the wind turbine, enables fault ride-through of the hybrid offshore wind power bipolar flexible DC transmission system without the need for energy-consuming resistors. This method offers significant economic benefits and promising application prospects.

The application provides a hybrid converter fault ride-through control method and device. A DC common-mode modulation voltage of a hybrid converter is calculated according to an actual value of a DC side current of the hybrid converter. A current reference value of the hybrid converter is calculated according to the DC common-mode modulation voltage. The hybrid converter is controlled to ride through a fault according to the DC common-mode modulation voltage and the current reference value of the hybrid converter. Long-distance and large-capacity flexible DC power transmission can be realized, the overvoltage of a sub-module during DC line fault ride-through is reduced, the fault current can be quickly suppressed, the fault ride-through without blocking is realized, and the operation reliability of the hybrid converter is improved.

This invention discloses a quantitative analysis method for asphalt-aggregate interface failure behavior based on image processing, belonging to the field of road engineering. The method includes the following steps: conducting pull-out tests on the asphalt-aggregate interface using a universal testing machine to obtain stress-strain curves, extracting evaluation indicators based on the stress-strain curves, and calculating the cohesive failure behavior test results based on the evaluation indicators; acquiring images of the failure interface of the hybrid failure specimen using digital image processing methods, identifying and calculating the area ratio of the cohesive failure region to the adhesive failure region based on the acquired images; and calculating the evaluation indicator results of the adhesive failure region based on the cohesive failure behavior test results and the area ratio, thereby achieving a quantitative expression of the asphalt-aggregate interface bonding failure behavior.

The application discloses a hybrid electric propulsion device, comprising: an insulating support, a plurality of needle-tube electrode modules and a plurality of wire-tube electrode modules, the needle-tube electrode modules and the wire-tube electrode modules are fixed alternately on the insulating support to form an array structure, each wire-tube electrode module is connected to a ground end in parallel, and each needle-tube electrode module is connected to a high-voltage end in parallel; the wire-tube electrode module comprises a plurality of wire-tube electrode rods fixed on a conductive support, the wire-tube electrode rod comprises a first metal tube and a metal wire, the metal wire is connected to the conductive support and kept in the same horizontal plane with the first metal tube; the larger physical size of the metal wire of the ground end is used to weaken the electric field in the direction of the positive space charge movement, to inhibit the development of the streamer to the deep gap, thereby significantly improving the breakdown voltage threshold, and through the combination of the high ionization capacity of the tungsten needle and the electric field uniformity of the wire / tube, the thrust density and the system stability are improved together.

The application discloses a high-power charging pile thermal runaway monitoring method and a protection system thereof, relates to the technical field of high-power energy supplementing infrastructure for new energy vehicles and extreme thermal physical safety control, and aims to solve the technical defects of lagging thermal runaway monitoring and passive protection of the existing high-power charging pile. The monitoring method discloses the single dependence on the terminal temperature lagging representation, constructs an early microcosmic evolution detection system of multi-physical field coupling, realizes early and accurate identification of thermal runaway precursors through the synergistic detection of three dimensions of electrical frequency domain micro stress detection, cooling medium micro boiling acoustic detection and interface escaping gas concentration feedforward detection, and combines multi-dimensional state fusion threshold determination. The protection system corresponds to the above monitoring method, is composed of a hybrid type ultra-fast breaking module, an active phase change flooding fire extinguishing module, a gun end forced separation module and a comprehensive decision-making master control hub, and realizes graded active protection in different stages of thermal runaway.

This invention relates to the field of energy storage power stations, specifically a hybrid energy storage power station that combines long-term peak shaving and rapid frequency regulation. It includes a shell, a sealing door, and an inner frame. The sealing door is rotatably mounted on the front of the shell via hinges. The inner frame is fixedly installed inside the shell. Flow holes are provided on the top and sides of the shell to allow for gas circulation and heat dissipation. An explosion-proof section, located on the inner frame, is used to cool and prevent explosions from abnormally high-temperature batteries, avoiding safety hazards caused by battery thermal runaway. A traction section, also located on the inner frame, is used to adjust and change the position of the high-temperature batteries. This hybrid energy storage power station, combining long-term peak shaving and rapid frequency regulation, can sense battery temperature changes in real time through temperature response and dual heat dissipation functions. It utilizes multi-structure linkage to increase the battery heat dissipation area and intensity, rapidly reducing battery temperature and preventing overheating damage.

The application discloses a kind of semi-solid high-pressure mixed energy storage devices and preparation method thereof, belong to electrochemical energy storage device technical field.The energy storage device uses boron nitride modified PVDF / PEO gel polymer composite electrolyte to replace traditional liquid electrolyte, completely solve the problem of leakage;Through double-sided heteropolar composite electrode and diaphragm alternately laminated 50~380 layer internal series structure, directly realize 800V above high voltage direct output.Its preparation method uses vacuum infiltration+gradient curing process, perfect reuse S01-S03 complete set of core technology, without adding new equipment.The whole package energy density can reach 55~60Wh / kg, operation safety is greatly improved, cycle life is greater than or equal to 120000 times, perfect adaptation to high safety requirement of power grid energy storage, industrial standby and other scenes.

The utility model discloses a kind of oil-electricity hybrid type rhizome of polygonatum sibiricum planting machine, comprising: walking frame;Clutch mechanism, including double clutch, first transmission shaft, second transmission shaft, first, second transmission shaft is connected by double clutch;Fuel engine and motor, the output end of fuel engine is connected with first transmission shaft transmission, the output end of motor is connected with second transmission shaft transmission;First, second, third transmission mechanism, the input end of first transmission mechanism is connected with second transmission shaft, output end is connected with the input end of second transmission mechanism and third transmission mechanism respectively, the output end of second transmission mechanism is connected with the walking drive wheel of walking frame, to drive walking;Sowing device, including spoon chain type seed metering device, the output end of third transmission mechanism power transmission is given to spoon chain type seed metering device to carry out seed metering;Ditching device, it is installed after sowing device.Effectively improve rhizome of polygonatum sibiricum sowing efficiency and adapt to different operating environment, comprehensive sowing efficiency is improved by more than 40%.

This invention discloses an intelligent reflector hybrid unit and its control method, belonging to the field of antenna technology, and solves the technical problem that existing hybrid structures cannot perform beamforming in low-power mode. The reflector hybrid unit includes multiple hybrid units and multiple passive units arranged in an array. Each hybrid unit consists of a hybrid upper dielectric substrate, a hybrid upper patch, a hybrid lower dielectric substrate, and a hybrid lower patch. The top of the hybrid upper dielectric substrate is also provided with a first additional patch and a first electronic switch connecting the first additional patch and the hybrid upper patch. By controlling the on / off state of the first electronic switch, the first additional patch and the hybrid upper patch are connected or disconnected to achieve a 180° phase difference. An additional structure is provided on the passive upper patch to achieve phase alignment between the hybrid unit and the passive unit, so that the passive phase at the center is consistent with the active phase to improve gain.

The application is suitable for the technical field of gas filling, and provides a mixed integrated device for mixed industrial gas filling, which comprises a goods shelf, a gas cylinder, a support and a gas injection interface, the gas cylinder is placed in the interior of the goods shelf, the support is installed above the goods shelf, the gas injection interface is installed in the interior of the support, and the device further comprises: a locking assembly arranged in the interior of the support and used for keeping the gas cylinder stable on the support; and a gas injection assembly arranged in the interior of the support and used for actively filling the adjusted gas cylinder with gas, wherein the gas injection assembly comprises a gas injection frame slidingly connected to the top of the support, and a limiting frame slidingly connected to the gas injection frame; the application has the beneficial effects that before the device fills the gas cylinder with gas, the limiting frame flips the rocker arms of the plurality of gas injection interfaces connected to the gas cylinder, so that the gas injection interface can ensure a locked state with the gas cylinder during the gas injection process, and the staff's negligence in forgetting to lock the rocker arms is avoided, so that the gas cylinder does not cause a safety hazard to the surroundings during the filling.

The present invention relates to a hybrid motorcycle chassis (10) comprising pipe profiles (11) and connecting pieces (12) that form the load-bearing element of the motorcycle, and making chassis (10) lighter and more rigid.