雙升壓架構之小型獨立型風力發電系統研製

本文旨在研製獨立型小型垂直軸風力發電系統，首先觀察小型永磁式同步發電機之輸出特性，再以雙升壓型直流/直流轉換器(double boost DC/DC converter)配合擾動觀察法，以達到最大功率追蹤控制並改善風力發電機之遲滯效應，藉由電壓源電壓控制型單相全橋式變流器(full bridge inverter)將直流電轉換成交流電，提供單相獨立負載使用。本文首先利用人工風道量測不同風速下風力發電機之輸出特性曲線，再以數位信號處理器(DSP TMS320-F2812)為控制核心，所有控制均由軟體程式完成，以改變功率開關元件之切換週期，將直流/直流升壓型轉換器輸出功率控制在最大功率點，在重載時將風力發電機保持在高轉速區，以克服風力發電機之遲滯效應。本文透過人工風道測試，完成獨立型小型垂直軸風力發電系統之雛形。

關鍵字

風力發電系統；最大功率追蹤；變流器；雙升壓轉換器

並列摘要

This thesis develops a small-scaled vertical axis stand-alone wind power generation system. First, we observed the output characteristics of a small permanent magnet synchronous generator, then a double boost DC/DC converter was used and combined with the perturb-and-observe method to achieve maximum power point tracking control and improve the hysteresis effect of wind power turbine. Finally, the DC power can be transformed into AC power by voltage source voltage control single phase full-bridge inverter for independent load. In this thesis, we performed wind tunnel experiments to measure the output characteristic curves of wind turbine in different wind speed. A digital signal processors (DSP TMS320-F2812) was adopted to implement control algorithms to change the switching period of double boost DC/DC converter for maximum power point tracking. When the load was heavy, the wind turbine was maintained at a high speed region in order to overcome the hysteresis effect of the wind turbine. The experiment was given using the artificial wind tunnel to achieve a prototype small-scaled vertical axis stand-alone wind power generation system.