Research On Main Controller Of MW-level Direct-driven Mixed-excitation Wind Energy Generator

Wind energy power, as a new type green energy, is being a new technology field which the states all over the worlds want to develop. Studying wind energy power system with autonomous property intellectuelle can realize our country energy multielement, modulate our country current energy structure and reduce difference of wind energy power industry between our country and international.In this theses, a new MW-level direct-driven mixed-excitation wind energy power system is put forward, based on analyzing current mainstream direct-driven wind energy power system. The constitute, power change circuit and control system of this system is analyzed and designed functional. The control programme of mixed-excitation controller, inverter controller, pitch controller, yaw controller and main controller is designed detail.The control function and monitor parameter of main controller and the work pattern and process of this system is studied in this theses. The control platform frame of main controller is constituted based on embedded system technology. The inner electric and mechanism connection structure of main controller and the redundance measure of control system is designed in detail. The reliability and anti-disturbance capability of controller is improved. According to controller specific demand, the detail circuit of main function module is designed.The realization of main controller software is researched in this theses. The process ability and real time of the system is assured by using RT-Linux as controller of embedded real-time operation system. The embedded cross-compile environment based on Linux is established. The RT-Linux transplant of embedded real-time operation system is realized. The driven programme is developed and the task is assigned and written based on RT-Linux. By making use of MiniGUI package, the GUI of control system is designed and developed, which establishes friendly HMI. Adopt SQlite as embedded database, after SQlite transplanted, this paper establish set statue database, set event database and set fault database in order to log real-time statue of control system, future more, this paper analyses and designs those three databases.