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研究生： 張謝文
Zhang, Xie-Wen
論文名稱： 具主動箝位之新型三埠直流-直流轉換器
A Novel Three-Port DC-DC Converter with Active Clamp
指導教授： 陳建富
Chen, Jiann-Fuh
學位類別： 碩士
Master
系所名稱： 電機資訊學院 - 電機工程學系
Department of Electrical Engineering
論文出版年： 2024
畢業學年度： 112
語文別： 英文
論文頁數： 156
中文關鍵詞： 非隔離型三埠直流-直流轉換器 、混合電源系統 、高轉換比 、三繞組耦合電感 、主動箝位
外文關鍵詞： Non-Isolated Three-Port DC-DC Converter, Hybrid Power System, High Conversion Ratio, Three-Winding Coupled Inductor, Active Clamp
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    • 三埠直流-直流轉換器於混合電源系統中變得愈發重要。傳統三埠直流-直流轉換器使用耦合電感、倍壓電路等升壓技術來提升電壓增益，但耦合電感中的漏感會導致功率開關上的高電壓尖峰，從而降低轉換效率。
    本篇論文提出具有高轉換比的非隔離型三埠直流-直流轉換器，該轉換器利用三繞組耦合電感調節三個端口之間的六種功率流動，使用主動式箝位電路回收漏感能量以限制功率開關上的電壓應力，並增加直流匯流排對儲能系統儲能的能力。
    此外，本論文還將介紹穩態分析和參數設計，通過理論推導及實作一個可再生能源電壓為33-40 V、儲能系統電壓為24V、直流匯流排電壓200V、額定功率為350W、儲能系統功率為250W與操作頻率為100kHz的三埠直流-直流轉換器來驗證該架構的可行性。此轉換器於SIDO模式下最高效率可達89.5%，DISO模式下最高效率可達94.6%。

    Three-port DC-DC converters have become increasingly significant in hybrid power systems. Conventional three-port DC-DC converters employ coupled inductor and voltage multiplier technology to enhance voltage conversion ratio. However, leakage inductance in the coupled inductor can lead to high voltage spikes across the power switch, thereby reducing conversion efficiency.
    In this thesis, a non-isolated three-port DC-DC converter with a high conversion ratio was proposed. The converter utilizes a three-winding coupled inductor to regulate the six power flows among the three ports. It employs an active clamped circuit to recover leakage inductance energy, limiting the voltage stress on the power switch, and enhance the DC bus ability to transfer energy to the energy storage system.
    Furthermore, this thesis presents the steady-state analysis and parameter design. The feasibility of the proposed converter is verified through theoretical derivation and the implementation of a three-port DC-DC converter with a renewable energy voltage range of 33-40V, an energy storage system voltage of 24V, a DC bus voltage of 200V, a rated power of 350W, an energy storage system power of 250W, and an operating frequency of 100kHz. The converter achieves a maximum efficiency of 89.5% in SIDO condition and 94.6% in DISO condition.

    摘要 I Abstract II Acknowledgement III Contents IV List of Tables VII List of Figures VIII CHAPTER 1 INTRODUCTION 1 1.1 Background and Motivation 1 1.2 Thesis Outline 4 CHAPTER 2 REVIEW OF TOPOLOGIES 5 2.1 Non-Isolated Three-Port Converter 7 2.1.1 Single-Inductor Three-Port Converter 8 2.1.2 Parallel Connection of Buck and Boost Converter 11 2.2 Partially Isolated Three-port Converter 13 2.2.1 Half-Bridge Three-Port Converter 14 2.2.2 PV-Isolated Three-Port Converter 15 2.3 Fully Isolated Three-Port Converter 15 2.3.1 Half-Bridge Three-Port Converter 16 2.3.2 Series-Resonant Three-Port Converter 17 2.4 High Step-Up Converter 18 2.4.1 Coupled Inductor Boost Converter 18 2.4.2 Multi-Winding Coupled Inductor Boost Converter 20 2.4.3 Integrating with Boost Converter 21 2.4.4 Interleaved Couple-Inductors Boost Converter 22 2.5 High Step-Up Three-Port Converter 23 2.6 Comparison and Discussion 25 CHAPTER 3 ANALYSIS OF PROPOSED CONVERTER 30 3.1 Topology Derivation of Proposed Converter 30 3.2 Single Input Single Output (SISO) 34 3.2.1 Operating Principle of Single Input Single Output (SISO) 35 3.2.2 Steady-State of Proposed Converter in Single Input Single Output (SISO) Condition 60 3.3 Single Input Dual Output (SIDO) Condition 72 3.3.1 Operating Principle of Single Input Dual Output (SIDO) 72 3.3.2 Steady-State of Proposed Converter in Single Input Dual Output (SIDO) Condition 79 3.4 Dual Input Single Output (DISO) Condition 79 3.4.1 Operating Principle of Dual Input Single Output (DISO) 79 3.3.2 Steady-State of Proposed Converter in Dual Input Single Output (DISO) Condition 89 CHAPTER 4 PARAMETER DESIGN, SIMULATION, AND EXPERIMENTAL RESULTS 91 4.1 System Topology and Specification 91 4.2 Parameter Design of the Three-Port Converter 92 4.2.1 Duty Cycle 92 4.2.2 Coupled Inductor 93 4.2.3 Capacitance 95 4.3 The Selection of Power switch 101 4.3.1 MOSFET 101 4.3.2 Diode 104 4.4 Component Parameters 105 4.5 Single Input Single Output (SISO) condition 107 4.5.1 PV Source to DC Bus Condition 107 4.5.2 Battery Source to DC Bus Condition 110 4.5.3 PV Source to Battery Load Condition 113 4.5.4 DC Bus to Battery Load Condition 115 4.6 Single Input Dual Output (SIDO) condition 118 4.7 Dual Input Single Output (DISO) condition 121 4.8 Efficiency and Power Losses Analysis 125 4.8.1 Efficiency 125 4.8.2 Power Losses Analysis 129 CHAPTER 5 CONCLUSIONS AND FUTURE WORKS 135 5.1 Conclusions 135 5.2 Future Works 136 REFERENCES 137

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