近來電力電子設備逐漸被使用於船舶電力系統上，這些設備大多為非線性負載而易產生諧波污染。當諧波污染嚴重時，有擊穿設備絕緣的可能性，進而損害船舶用電系統之設備或影響船上人員之安全。本文探討被動式濾波器用於改善船舶電力系統之諧波污染，並分析其較適當安裝位置以有效降低諧波量。另因船舶可用空間狹隘，若能先行瞭解其諧波量是否符合規範要求，再建議被動式濾波器安裝位置及容量，將能達到較佳抑制效果並減少成本花費。本文以靈敏度分析法為基礎，使用IEEE 14個與30個匯流排系統來模擬驗證所提方法之可行性，再以500噸巡防艦與2700噸海洋研究船來實現所提裝設被動式濾波器之策略，所得結果期能作為未來船舶電力系統設計之參考。

Recently, power electronic devices have been gradually used in a shipboard power system. They are typically non-linear loads that usually inject harmonics into the shipboard power system to possibly penetrate the insulation, leading to damage the equipment and affect the human safety in the shipboard electric power system. This thesis is to investigate the improvement of the harmonics in a shipboard power system by applying passive harmonic filters (PHFs) and analyze a proper location for installing the PHFs in order to effectively suppress harmonics. Moreover, due to a narrow vacant space of vessels, if the harmonic content in a vessel can be known in advance to compare with the suggested value, the recommended installation location and capacity of PHFs can then be found to incease the efficiency of harmonics suppression and reduce the cost. The method used to evaluate the harmonics in a shipboard power system is based on sensitivity analysis method. To verify the feasibility of the proposed method for allocating the PHFs, the IEEE 14-bus and 30-bus systems are first studied and the method is then implemented into a 500 ton guided-missile patrol vessel and a 2700 ton oceanographic research vessel with electric propulsion. Hopefully, the results can be used as a reference for engineers to design a shipboard power system in the future.

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