隨著再生能源的日漸普及以及功率半導體的技術迅速發展，都會促使固態變壓器的應用更為廣泛，數十年來中壓固態變壓器已經被提及相當多次且逐漸成為熱門的研究議題，固態變壓器能夠配合電力電子技術提供智慧化控制對於未來智慧電網的架設是一項重點，固態變壓器的主要目的為取代傳統變壓器以提升系統頻率來大幅縮小磁性元件體積及重量。
本論文主要回顧之前實驗室學長製作之諧振式轉換器10 kVA 模鑄式變壓器，比較之前的灌注流程對於模鑄式變壓器的影響，以及提高單一諧振式轉換器模組功率以減少模組數量，並對其中之40 kVA高頻模鑄式變壓器進行設計與分析，及高頻模鑄式變壓器的參數設計與絕緣考量，並利用軟體COMSOL Multiphysics®模擬輔助，完成實際模鑄式變壓器灌注後加入諧振式轉換器進行電路測試，並驗證其可行性，最後諧振轉換器可以達到2600Vdc輸入200Vdc輸出。

With the increasing popularity of renewable energy and the rapid development of power semiconductor technology, the application of solid-state transformer will be more widely used. Solid-state transformer increases operating frequency which can significantly reduce the volume and weight of magnetic components.
The resonant converter which is made by the seniors of laboratory is reviewed in this thesis. The 10 kVA cast resin transformer of the resonant converter is reviewed and analyzed. Then, larger power cast resin transformer is carried out. This thesis mainly focuses on the parameter design and insulation considerations of the 40kVA high-frequency cast resin transformers, and uses the software COMSOL Multiphysics® to simulate. Finally, the transformer is adopted into the resonant converter to verify its feasibility, and the resonant converter is tested under input 2600 Vdc and output 400 Vdc.

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