5 results about "Power capture" patented technology

The application relates to the field of wind power generation technology and discloses a bladeless wind driven generator capable of improving wind power generation efficiency, which comprises an energy storage base mechanism and a power capturing mechanism, the energy storage base mechanism comprises an electric energy storage system, a regulation and control transmission system, a protection optimization system and a light energy application system, and the power capturing mechanism comprises a power capturing and conducting system, a power capturing optimization system, a regulation and control optimization system and a support protection system; the bladeless wind driven generator capable of improving wind power generation efficiency has the power capturing optimization system and the regulation and control transmission system, the lifting regulation and control mechanism and the pneumatic conducting mechanism arranged in the regulation and control transmission system are started through the transmission control air pump, the lifting air cylinder piston rod is pushed out, the lifting butt joint seat and the lifting fixed seat are far away from each other, the upper end of the function mounting seat is lifted, the power capturing and conducting system is lifted, the power capturing column body is lifted, and the high-altitude airflow kinetic energy with a faster flow speed can be more favorably captured.

A method of monitoring one or more blades of a rotor of a wind turbine, the method comprising: obtaining bending information indicating bending of one or more of the blades; obtaining pitch information indicating a pitch angle of one or more of the blades; when wind speed is below a rated wind speed: operating the wind turbine in a partial load mode in which pitch angles of the blades are controlled to maximise power captured by the rotor; operating a first detection mode in which the bending information is analysed to determine whether a blade anomaly exists and generate a corresponding output, wherein the first detection mode coincides with the partial load mode over a first range of wind speeds; when wind speed is above the rated wind speed: operating the wind turbine in a full load mode in which the pitch angles of the blades are varied to capture a maximum allowed power with the rotor; and operating a second detection mode in which the pitch information is analysed to determine whether a blade anomaly exists and generate a corresponding output, wherein the second detection mode coincides with the full load mode over a second range of wind speeds.

The invention relates to the technical field of wind power plants, and discloses a wind turbine generator field-level power collaborative optimization control strategy considering a wake effect, so as to reduce the weakening effect of the wake effect on the generated power of the wind power plant, realize the optimization of the power capture performance of the wind power plant and improve the economic benefit of the wind power plant. According to the method, a distributed model prediction control framework is utilized, and firstly, a numerical model is established according to mechanical characteristics of a fan actuator, a transmission system and the like; secondly, establishing a wake flow model according to radial distribution characteristics of fan wake flow; then, linearization is carried out on the established model; and finally, establishing a wind field control framework and a cluster decision cost function by using a model prediction control framework, and controlling fan actuators in the field to perform cooperative work.

The invention discloses a single-rope reciprocating transmission type manpower power generation device and a control method thereof. According to the device, through a winding mode of double transmission wheels, a same-direction one-way transmission piece, a reversing pulley and a pull rope with opposite spiral directions, a return stroke dead zone of a traditional pull rope generator is thoroughly eliminated, and one-way continuous rotation and uninterrupted energy capture under single-rope reciprocating pulling are achieved. Through a sectional type transmission shaft and a third one-way transmission piece, a user operation end and a core inertia wheel power generation module are subjected to dynamic decoupling, and it is ensured that inertia kinetic energy stored by an inertia wheel can be used for continuous power generation to the maximum degree without loss. According to the method, a power generation load is dynamically adjusted by sensing the angular acceleration of an inertia wheel in real time, and efficient self-adaptive power capture is achieved; meanwhile, touch and visual dual feedback is provided based on the load and the energy storage state. The method is labor-saving in operation, high in energy conversion efficiency and high in system robustness.

The invention provides an active frequency control method and device for a wind power grid-connected system. The method comprises the steps that power grid parameters, frequency parameters, fan parameters and wind speed parameters in the wind power grid-connected system are collected; constructing a system frequency response equation set in combination with the collected parameters; determining the maximum releasable energy and the energy frequency modulation support constraint by combining the fan parameters, the frequency parameters, the rotor kinetic energy release power of the fan and the captured wind energy loss; controlling the kinetic energy release of the rotor based on the maximum releasable energy and the energy frequency modulation support constraint; responding to the condition that the power grid frequency and the frequency change rate meet preset requirements, controlling the rotor to stop energy release, and switching to a kinetic energy recovery mode; and evaluating the active frequency control effect of the wind power integration system based on the kinetic energy utilization rate of the rotor and a preset frequency support index.