摘要
摘要 本論文主旨在藉由低階微控制器(Micro-Controller Unit ; MCU)實現低成本風力發電最大功率點追蹤(Maximum Power Point Tracking,MPPT)控制之加熱器研製。首先將風力發電機輸出電力經直流/交流變流器轉換成交流電供加熱負載棒使用，接著透過風力發電機相電流頻率估測出當下轉速後，即可由轉速與最大功率點關係式求得風機最大功率點輸出參考電壓值，再透過滑模控制器驅使系統達到最大功率點電壓並維持最大效能輸出。為了驗證控制器之可行性，以數值軟體進行最大功率點追蹤模擬，並與PI控制器進行比較。最後以低階HT56R22微控制器實現其最大功率控制核心，硬體架構包含風機模擬平台、永磁同步發電機(PMSG)及全橋式變流器，實驗針對最大功率點追蹤控制及溫度控制驗證其控制性能。
並列摘要
Abstract The main objective of this thesis is to implement a low-cost maximum power point tracking (MPPT) controller for the wind energy conversion heater by using a low-level Micro-Controller Unit (MCU). First, the rectified wind generator output power is regulated to adjustable AC power for the water heater via a DC/AC inverter. Then, the generator speed is estimated by the generator phase current frequency and used to determine the reference voltage of the maximum power point from the optimal operational power curve. In order to keep high efficiency of the wind energy conversion system,this thesis presents a sliding mode controller to track the reference maximum power point voltage. To verify the validity of the overall MPPT controller, the simulations and experiments are conducted by using Matlab software and HT56R22 MCU respectively. Finally, some comparisons are performed in this thesis.