本論文實現一11 kW雙向三相六開關交流-直流轉換器，當操作於整流模式時，藉由功率因數修正功能，將三相輸入交流電壓轉換為高壓直流匯流排電壓；操作於換流模式時，能量可以回饋至交流端。藉由電壓空間向量調變的控制，使輸入電流波形為與輸入電壓同相位之正弦波，並可達到高功率因數與低電流諧波失真，其理論分析能以本論文中之模擬波形驗證。最後實現一雙向三相六開關交流-直流轉換器，以驗證模擬與理論的可行性。

This thesis presents an 11 kW bi-directional three-phase six-switch AC-DC converter. At rectifier-mode operation, the three-phase AC input voltage is converted as a high-voltage DC bus voltage with high power factor correction function. At inverter-mode operation, the energy can be feed back to AC-line utility. Voltage space vector modulation (SVPWM) control is used to realize a sinusoidal input current waveform in phase with the AC input voltage. High power factor and low current harmonic distortion can be achieved. Simulation waveforms are shown to verify the theoretical analysis. An 11kW bi-directional three-phase six-switch AC-DC prototype converter was built and tested to verify the feasibility of the proposed scheme.

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