再生能源雖具發展成為最重要之電能來源之一的潛力，惟具發電成本過高、轉換效率較低之缺點。本文乃研製一可應用於具儲能設備之市併型風力發電電能轉換系統，其中改良系統架構及最大功率追蹤控制法，使系統具有較低成本、較高轉換效率的特點，並藉由可規劃邏輯閘陣列(FPGA)程式發展器，透過硬體描述語言(Verilog HDL)撰寫程式進行系統控制。本系統針對風力發電機特性進行最大功率追蹤控制，以電池配合調控輸出電量，其中改變傳統雙向電能轉換器架構，利用上下兩功率開關的調控使其在原有充放電控制功能外，亦取代傳統升壓電路功率開關的動作，達到簡化系統架構並提升效能、降低成本的目的。另本文提出改良式三點權位法，將功率變化量作為參數控制權值訂定的依據，此法可使運轉點更貼近最大功率曲線，增加原有三點權位法的追蹤速度及準確性，提高最大功率追蹤的效率。本文所提系統架構及控制方法經實際測試於1.2kW電能轉換系統證實具有最大功率追蹤及電池充放電功能外，並可獨立供電給負載電能，或與市電併聯進行實虛功的輸出控制。

Though renewable energy possesses the potential becoming one of most important power energy resources, its cost is high and efficiency is still low. The thesis intends to design and implement a grid-connected wind power conversion system with energy storage device. With simplified system architecture and improved maximum power point tracking (MPPT) control scheme, the proposed system has the advantages of lower cost and higher conversion efficiency. The controller used for the system is field programmable gate array (FPGA) program device developed in hardware description language (Verilog HDL). Depending on the characteristics of wind turbine generation, the MPPT control is conducted with the output power regulated by batteries. The structure of traditional bi-directional converter is improved by using only upper and lower power switches to achieve both original charging/discharging control purpose and replace the active power switch of the traditional boost converter. Not only the performance of the system is enhanced, but the cost can be reduced. Besides, a modified Three Point Weight Comparison (TPWC) Method is proposed in the thesis. It uses the variation rate of the power output as a weight-tuning control parameter. The maximum power curve can be tacked closer with higher tracking speed and efficiency than the original TPWC Method. The proposed system structure and control method have been verified on a practical 1.2kW wind-power conversion system. The experimental results show that the enhanced MPPT control and battery charging/discharging functions can be achieved for off-grid and on-grid operations, where real and reactive power output can be controlled according to system requirements.

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