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研究生： Nada Syifa Qolbiyah
Nada Syifa Qolbiyah
論文名稱： 應用於固態電壓器之三階半橋CLLC諧振轉換器
Three-Level Half-Bridge CLLC Resonant Converter in Solid-State Transformer Application
指導教授： 邱煌仁
Huang-Jen Chiu
口試委員: 邱煌仁
Huang-Jen Chiu
劉宇晨
Yu-Chen Liu
張佑丞
Yu Chen Chang
學位類別： 碩士
Master
系所名稱： 電資學院 - 電子工程系
Department of Electronic and Computer Engineering
論文出版年： 2022
畢業學年度： 110
語文別： 英文
論文頁數： 78
中文關鍵詞： CLLC諧振轉換器 、固態變壓器 、三階電壓 、零電壓開關
外文關鍵詞： CLLC resonant converter, solid-state transformer, three-level voltage, zero-voltage switching
相關次數： 點閱：1033  下載：88 
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  •  上一筆

    • 三階半橋 CLLC 諧振轉換器被提出用於三級固態變壓器中的隔離級。該轉換器採用三階電路架構，將電源開關電壓應力降低到輸入和輸出電壓的一半，其中箝位二極體和箝位電容的組合實現了所有開關的零電壓開關條件，且在輸入和輸出串聯之電容的電壓不均勻時加快了穩態時間。本文採用的轉換器之等效電路模型是用基波近似方法推導出的，用於穩態分析和頻率特性觀察。最後，實現了一台CLLC 轉換器電路，以驗證設計和可行性。當輸入電壓為1000 V時，所提出的轉換器約在 1042 W 時具有 98.09% 的最高功率轉換效率。

    The three-level half-bridge CLLC resonant converter is proposed as an isolation stage for connecting medium-voltage (MVDC) and low-voltage (LVDC) in a three-stage solid-state transformer application. The converter applies a three-level voltage configuration to diminish the switching device voltage stress halved of the input and output voltage. The combination of clamping diode and clamping capacitors realizes a zero-voltage switching (ZVS) condition for all of the switches and speed up the steady-state time when the voltage across the input and output capacitor is uneven. An equivalent circuit model of the proposed converter was derived with fundamental harmonic approximation (FHA) method for the steady-state analysis and frequency characteristic observation. Finally, a CLLC converter prototype was developed to verify the design and performance expediency. The proposed converter possesses the highest power conversion efficiency of 98.09% at 1042 W for 1000 V input voltage.

    Table of Contents 摘要 i Abstract ii Acknowledgement iii Table of Contents iv List of Figures vi List of Tables ix Chapter 1 Introduction 1 1.1 Background 1 1.2 Research Methodology 3 1.3 Chapter Outline 4 Chapter 2 The Topology Architecture 6 2.1 Introduction of The CLLC Resonant Converter 6 2.2 Bidirectional CLLC Resonant Converter 9 2.3 Multi-Level CLLC Resonant Converter 11 1.3.1 Clamp Diode 12 1.3.2 Clamp Capacitors 13 1.3.3 Advantages and Disadvantages of The Multi-Level Circuit Topologies 14 Chapter 3 The Operation Principle 17 3.1 Operation Principle 17 3.2 Time Sequence Analysis 19 3.3 Fundamental Harmonic Approximation Method and Gain Curves Analysis 28 3.4 Zero-Voltage Switching (ZVS) Condition 36 Chapter 4 Hardware Design Consideration 38 4.1 Circuit Specification 38 4.2 Resonant Capacitor Design 39 4.3 Resonant Inductor Design 39 4.4 Transformer Design 40 4.4.1 The Derivation of Area Product Method 41 4.4.2 The Implementation of Area Product Method 44 4.5 Active Components Design and Selection 48 4.5.1 Power Switching Device 48 4.5.2 Clamp Diodes 49 4.6 Passive Components Design and Selection 50 4.6.1 Clamp Capacitors 50 4.5.2 Output Capacitors 51 4.7 Gate Driver Circuit 52 Chapter 5 Simulation and Experimental Results 54 5.1 Simulation Results 54 5.2 Experimental Waveform Results 58 5.3 Experimental Data 61 Chapter 6 Conclusion and Future Work 63 6.1 Conclusion 63 6.2 Future Work 64 References 65

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