本論文提出了一種創新的、具雙諧振電路與可擴充模組化設計的非隔離單開關 DC–DC 升壓轉換器。整體拓樸使用一顆獨立電感及耦合電感的漏感與兩顆諧振電容組成兩組諧振迴路。透過這兩組諧振迴路，開關元件得以在電壓或電流通過零點時完成導通與關斷──實現所謂的全柔切機制，從而將原本會在漏感與電容間耗散的能量回收，並大幅降低切換損耗及產生的電磁干擾。 在高增益輸出方面，本架構採用了模組化電壓倍壓單元設計，使得即使在固定工作週期下，也能透過多級電容分壓與能量累加的方式取得大幅度的電壓提升。此外，因為系統輸入端維持連續輸入電流的特性，輸入電流波形保持平滑、低紋波，不僅降低了輸入側的應力，也改善了整體動態響應與控制穩定性。 為了進一步保護功率開關及連帶元件免於切換期間產生的高幅值電壓尖峰影響，本轉換器整合了一組箝位電路。當開關元件在高速切換時若出現過高電壓，箝位元件會迅速吸收或分流過量能量，將尖峰電壓限制在安全範圍之內，以提升元件可靠性並延長系統壽命。 最後，為驗證所提拓樸之可行性與實用性，我們製作了一個輸入電壓24 V、輸出電壓96 V、負載功率96 W的實驗原型，並在不同輸出功率下進行效率測試。實驗結果顯示，當輸出功率為50 W時，系統可達到最高96.9%的轉換效率，充分證明本設計在高效能、高電壓增益應用中具有優異的表現及良好的實用潛力。 ;This paper proposed a novel non-isolated, single-switch DC–DC boost converter featuring dual resonant loops and an extendable modular architecture. The topology utilized an inductor and the leakage inductance of a coupled inductor, combined with two resonant capacitors, to form dual resonant circuits that enabled full soft-switching operation for all power devices. The proposed converter effectively recycled leakage current, thereby significantly reducing switching losses and electromagnetic interference (EMI). A high voltage gain was achieved under a fixed duty cycle through a modular voltage multiplier cell (VMC) structure, while maintaining continuous input current characteristics. Moreover, a clamp circuit was integrated to suppress voltage spikes during switching transitions, further improving system reliability. To validate the feasibility of the proposed topology, a 96 W prototype was implemented, with input and output voltages of 24 V and 96 V, respectively. Experimental results demonstrated a peak efficiency of 96.9% at a 50 W load, confirming the practical applicability and high performance of the proposed converter.
