6results about How to "Resolve volatility" patented technology

This invention discloses a boost DC bus voltage matching system for a motor inverter with dual high-voltage battery packs, comprising a battery management system, battery pack A, battery pack B, main negative contactor R2, main positive contactor R3, main negative contactor R4, a first voltage sensor, a first current sensor, a second voltage sensor, a second current sensor, a third voltage sensor, a vehicle control unit, a generator control module, an inverter, a generator, a relay Rb, current sensors a1, b1, and c1, a DC link capacitor bank CDC, a power inverter module, a motor controller, current sensors a2, b2, and c2, and a traction motor. The invention features a highly integrated hardware architecture, effectively reducing system cost and space occupation, enabling seamless battery pack switching during driving, effectively suppressing surge current, protecting high-voltage components and ensuring power stability, improving system fault tolerance, and enhancing the operational reliability of the high-voltage system.

The application provides a refractory compression resistance detection device and method, and relates to the technical field of refractory detection. The detection device comprises a detection box body and an internal positioning assembly, a first heating assembly, a pressurizing assembly and a data acquisition assembly. The positioning assembly supports both ends of the sample to achieve suspended positioning through two positioning blocks. The heating assembly comprises a first heating device that can be lifted and is in contact with the surface of the sample to heat. The pressurizing rod of the pressurizing assembly vertically penetrates the heating device to press the center of the sample. The data acquisition assembly monitors the pressure, temperature and deformation in real time. The device realizes synchronous thermal loading through the cooperative work of the heating and pressurizing assemblies, avoids the thermal history interference problem caused by the separation of heating and pressurizing in the traditional method, can truly simulate the service state of the refractory in the high-temperature industrial environment, and provides accurate data support for the high-temperature compression resistance evaluation.

The utility model relates to a kind of gas inlet structure of gas detector.The gas inlet structure includes fairing, fairing has installation cavity, and fairing is equipped with the gas inlet with installation cavity intercommunication, and fairing inside is equipped with the gas dispersion net opposite with gas inlet, and gas dispersion net is densely covered with multiple gas dispersion holes.Fairing inside is equipped with gas diffusion structure on the other side of split dispersion net, and gas diffusion structure is in the shape of "hourglass", and gas diffusion structure includes first conical cylinder and second conical cylinder, and the small end of first conical cylinder and the small end of second conical cylinder are oppositely arranged, and gas diffusion structure has the center gas hole of intercommunication first conical cylinder and second conical cylinder.The big end of first conical cylinder is set to gas dispersion net for gas to enter, and the big end of second conical cylinder is used to set to the gas sensor inside gas detector for gas diffusion to the surface of gas sensor.Gradually buffer and disperse gas, avoid turbulent flow on the surface of gas sensor.

The application relates to the technical field of metal 3D printers, and discloses a pressure-controllable metal printer, which comprises a forming mechanism, a driving mechanism and a pressure control mechanism. The forming mechanism comprises a cylinder body and a printing component movably attached to the inner wall. The driving mechanism penetrates through the cylinder body to drive the printing component to ascend and descend. The pressure control mechanism is composed of an air pressure control bin and a pneumatic sealing ring. A cavity is formed between the air pressure control bin and the cylinder body, and pressure balance is implemented. The application forms a cavity through the air pressure control bin and the pneumatic sealing ring and dynamically balances pressure, solves the problems of uneven pressure and fluctuation caused by the traditional air pipe common pressure method, has the advantages of improving the timeliness and control accuracy of pressure balance adjustment, reducing pressure fluctuation in the printing process and improving the forming quality.

The invention discloses a power grid voltage control method and system based on fixed time distributed optimization. The method comprises the following steps: firstly, acquiring power distribution network data containing distributed photovoltaic; secondly, establishing a linearization power flow model based on the node admittance matrix, and determining a linear mapping relation between photovoltaic node voltage and reactive power injection; then, a convex quadratic programming optimization model with the minimum sum of node voltage deviations as a target is constructed, and inverter reactive capacity and node voltage safety constraints are included; then defining a local state variable at each photovoltaic node, and constructing a fixed time distributed control law containing gradient coordination, reactive power descending direction updating and constraint projection; and finally, performing integral operation on the control law through short-range communication interaction information of neighbor nodes, and updating reactive instructions of the inverter in real time. The method has the advantages of fixed time convergence and low cost, voltage fluctuation can be effectively suppressed, the method is suitable for power distribution network voltage coordination control under the whole county photovoltaic background, and the system operation stability is improved.

The present application relates to rectification technical field, particularly to a kind of rectification tower system balance full-automatic separation control method, rectification tower system includes rectification I tower, control method includes to rectification I tower is carried out material balance control and gas-liquid equilibrium control, gas-liquid equilibrium control is used to control the amount of backflow of material backflow to rectification I tower;The material balance control includes: detecting the actual feed flow of rectification I tower and the actual liquid level value of the first reflux tank corresponding to rectification I tower, in combination with the overhead take-off component set point of rectification I tower and the overhead take-off component density, the overhead take-off material flow of rectification I tower is calculated and controlled in real time.By the method, the stability and efficiency of rectification tower system are improved, and the energy consumption cost and the volatility problem of product are reduced.