5results about How to "Avoid frequent movements" patented technology

The invention relates to the field of wind power generation, in particular to a wind turbine generator yaw static error correction method and system based on a multi-beam laser radar. The method comprises the following steps: S1, scanning a wind field area in front of an impeller of a generator set through a multi-beam wind measurement laser radar mounted in a cabin of the wind turbine generator set to obtain parameter information of a plurality of spatial points; s2, performing fitting calculation on the parameter information system to obtain a fitting circle representing a horizontal wind vector of the wind field area, and solving the fitting circle to obtain a free flow wind direction; s3, the free flow wind direction is compared with the current cabin orientation, and a real-time static yaw error angle is obtained through calculation; generating a yaw control instruction according to a preset control strategy; s5, solving and calculating the fitting circle to obtain a transverse wind component, and correcting the yaw control instruction; according to the method, the control instruction is generated through the control strategy to drive the yaw system to perform dynamic compensation, so that the wind turbine generator can continuously maintain the optimal windward attitude, and the stability and long-term effectiveness of control are ensured.

The application discloses a kind of virtual synchronous generator secondary frequency modulation adaptive control method and system.For the frequency deviation of virtual synchronous generator primary frequency modulation in off-grid mode, the problem that traditional secondary frequency modulation is difficult to consider regulation rapidity and suppress overshoot, the application is divided into two stages with the zero point of frequency change rate as boundary on the basis of traditional VSG secondary frequency modulation active ring integral feedback: the first stage adopts fixed large integral coefficient to suppress frequency drop quickly, the second stage dynamically adjusts integral coefficient based on power deviation and frequency deviation integral, while trigger signal and key parameter design are completed.Compared with the traditional method, the application can realize frequency no-error regulation, effectively consider fast response and overshoot suppression, significantly improve the dynamic stability and operation safety of off-grid VSG under load disturbance, suitable for frequency control scene of high proportion renewable energy grid-connected microgrid, with wide application prospect and practical significance.

The invention discloses an intelligent wind power generation method and system suitable for a subway piston air shaft, and relates to the field of parameter regulation and control. According to the intelligent wind power generation method and system, the future working condition and the target angle are dynamically predicted by collecting multi-source field data in real time, and threshold value judgment, multiple repeated prediction and a weighted smoothing filtering mechanism are combined; invalid fine adjustment and false triggering caused by instantaneous data jitter are effectively eliminated, a reasonable to-be-adjusted moment is accurately locked, a regulation and control starting opportunity is accurately calculated and pre-planned based on a time-consuming model, and advanced and accurate in-place angle adjustment is guaranteed; and finally, introducing a periodic power deviation closed-loop evaluation iteration mechanism, dynamically and adaptively optimizing a regulation and control trigger threshold value, predicting smoothing times and weight distribution core parameters, continuously correcting the adaptive deviation between initial parameters and complex and variable working conditions, and finally, calculating the optimal power deviation of the complex and variable working conditions. And the energy capturing efficiency, the operation stability and the long-term self-adaptive service performance of the system under complex reciprocating airflow disturbance are remarkably improved.

The present invention relates to the technical field of thermal power plant flue gas carbon capture and resource utilization, and discloses a thermal power plant flue gas low energy consumption phase change CO2 capture-methanol co-production process system, which comprises: a CO2 absorption unit, which enables a non-aqueous phase change absorbent to absorb CO2 in thermal power plant flue gas to form a rich absorption liquid; the liquid-liquid phase separation unit is used for spontaneously separating the rich absorption liquid into a barren liquid phase and a rich liquid phase, and returning the barren liquid phase to the CO2 absorption unit; the rich liquid regeneration unit is used for heating and regenerating the rich liquid phase so as to desorb CO2 gas; the CO2 catalytic methanol synthesis unit is used for synthesizing methanol from CO2 gas and external hydrogen-rich gas; the heat pump waste heat recovery unit is used for recovering methanol synthesis reaction heat, upgrading the methanol synthesis reaction heat and supplying the methanol synthesis reaction heat to the pregnant solution regeneration unit; and the AI intelligent regulation and control unit is used for collecting process parameters of each unit and carrying out collaborative optimization control on an execution mechanism of each unit based on an improved model prediction control algorithm. Therefore, the energy consumption in the carbon capture process is greatly reduced, and the high-value utilization of carbon resources is realized.

This utility model discloses a device and vehicle for controlling the height and posture of a vehicle cab, comprising a height valve assembly and an adjusting linkage assembly. The height valve assembly includes a swing arm, a connecting shaft assembly, a rotor valve plate, a valve core assembly, an upper valve cover, and a lower valve body; the lower valve body has an air inlet, an air outlet, and an exhaust port with a muffler; the rotor valve plate and the valve core assembly cooperate to form a metal shear seal, switching the air path according to the swing arm position, and has a dead zone. The adjusting linkage assembly includes upper and lower connecting rods that can slide relative to each other and are locked by fastening sleeves, with connecting ball heads at both ends. This utility model has the advantages of large displacement, high inflation and deflation efficiency, fast response, good anti-fouling properties, low noise, and convenient adjustment, and is especially suitable for new energy vehicles, effectively improving the smoothness and reliability of the entire vehicle.