Research And Implementation On Infrared Small Target Image Preprocessing Technology

With the development of large offshore wind power industry, Europe, the United States and other countries have begun to large offshore wind power generation technology research, while the development of offshore wind power in China has just started. In order to reduce cost and key components of sea power load, the wind turbine controller performance put forward higher requirements. Correct HTS build large sea wind turbine model, design good performance of the maximum power tracking(MPPT), the independent variable propeller and floating platform controller is an important content. To improve the performance of offshore wind turbine systems is of great significance.Papers to complete the main research work are as follows:(1) Superconducting generatorsBased on the analysis of the characteristics of high temperature superconducting generators, HTS generator and doubly-fed induction motor and a direct-drive permanent magnet synchronous generator in common and difference, the modeling of high temperature superconducting generators, according to the method of analogy, reasonable estimates generator parameters. Superconducting generator system is a highly non-linear, strong coupling system, Superconducting generator system is a highly non-linear, strong coupling system in which superconducting materials volatile over. Therefore, under normal operating conditions provide low voltage large current.(2) Maximum power tracking(MPPT) algorithm designTaking into account the large fan-power operation is not yet mature curve or reference data, to be based on the nonlinear dynamic equations, fast search and online updates MPPT core parameters. Maximum power tracking using an adaptive inversion controller, complete a quick, practical maximum power tracking and to optimize the design of the controller, improve the efficiency of wind energy conversion and enhancement algorithm applicability.(3) Optimization of the loadTo reduce the effects of high frequency in the torque control and the pitch control system, added to a single-pole low-pass filter exponential smoothing the rotational speed signal, and reduce unnecessary large load at a high frequency controller action generated. To reduce the effects of high frequency in the torque control and the pitch control system, added to a single-pole low-pass filter exponential smoothing the rotational speed signal, and reduce unnecessary large load at a high frequency controller action generated.(4) Independent pitch and floating platform controllerFor large floating type offshore wind turbine hub in the operation process of a problem such as larger load and platform shaking, according to the existing floating platform model, the independent variable propeller control algorithm and the strategy, in the case of the output power stability, based on PID is analyzed. Studying coordinated control with hub in load control signals and platform shake angle control signals to achieve the optimal control of wind turbine, its roots in the middle of the load control and floating platform displacement control signal and the input signal through improved single neuron adaptive PI controller and the coordinate transformation.