本文旨在設計及建置一海洋潮流功率轉換系統。藉由建構海潮流渦輪機動力模擬器與電源轉換器，完成一獨立供電系統之研製。
首先，藉由現地量測試驗獲得海洋潮流渦輪機之動力特性。接著利用Matlab/Simulink程式建立渦輪機數學模型與動態特性，將此程式化資料實現於轉矩-轉速控制之伺服馬達，做為原動機帶動永磁式同步發電機運轉。由於海流流速較慢，使發電機運轉時所輸出的電壓及頻率較低，因此必須利用一組高升壓比之直流-直流電源轉換器將此電壓提升至系統所需之直流鏈電壓準位，並利用一組單相全橋式變流器，將此直流鏈電壓轉換成單相110V_rms，60Hz的穩定市電電能輸出，以供給一般交流負載使用。
為了達到有效利用海洋能量，本研究亦使用ㄧ雙向直流-直流儲能轉換器與蓄電池組搭配最大功率追蹤控制，將多餘能量儲存於蓄電池組中。依據功率平衡之條件，控制蓄電池組適當儲能及釋能，調節功率潮流並穩定負載所需輸出功率。
本文所實現之系統可於不同的流速條件下做運轉測試，並藉由實驗所獲得的量測波形驗證本研究所提出之功率轉換系統可有效調節海洋潮流發電之功率潮流。

This thesis presents the design and implementation of a tidal current power conversion system. The proposed system employs tidal turbine emulator and power converter to construct a stand-alone power generation system.
At first, the tidal turbine characteristic is obtained from the field test. Following that, the mathematical model and turbine’s characteristics are programmed by MATLAB/Simulink. The programmed file is used to realize the torque-speed control of the three-phase servo induction motor as a prime force to drive the permanent magnet synchronous generator. Because of the slow tidal speed, both output voltage and frequency from the generator are very low. A high step-up dc/dc power converter must be used to raise the dc-link voltage to a desired level. To supply general AC loads, a single-phase full-bridge inverter is used to convert the dc-link voltage to a single-phase AC source at 110V_rms, 60Hz.
To effectively manage the available tidal energy, a bi-directional dc/dc power converter with maximum power point tracking (MPPT) function and the battery bank are designed to store the excessive tidal energy. According to the power balancing conditions, the battery bank can be charged or discharged to regulate the power flow and stabilize the output power for demands.
The field implementation of the proposed system has been realized and tested under various operating scenarios. Experimental results have verified the effectiveness of the proposed power conversion system in managing the power flow for the tidal turbine generation.

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