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研究生： 溫偉智
Wun, Wei-jhih
論文名稱： 電流穩流模組系統模型之建立與分析
System Modeling and Analysis of Current Regulation Module
指導教授： 林瑞禮
Lin, Ray-Lee
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： 2008
畢業學年度： 96
語文別： 英文
論文頁數： 84
中文關鍵詞： 放電加工機 、錯相式 、電流穩流
外文關鍵詞： current regulation, interleaved, electrical discharge machine
相關次數： 點閱：179  下載：3 
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    • 本論文擬對一應用於放電加工機之電流穩流模組(Current Regulation Module : CRM)電路進行系統建模與分析。藉由推導及驗證單相及四相之電流穩流模組電路系統之小訊號模型的開迴路轉移函數，分析系統特性、設計閉迴路系統之補償器。
    本論文使用三端點之PWM架構推導諸開迴路小訊號轉移函數，分別建立單相及四相之電流穩流模組電路系統之小訊號模型方塊圖。同時，利用數學軟體MathCAD繪出諸開迴路小訊號轉移函數的波德圖曲線，與經由電路模擬軟體SIMPLIS所獲得之開迴路的波德圖曲線作比對驗證。再根據所推導之開迴路小訊號轉移函數設計閉迴路系統之補償器。
    最後以PSM1735增益相位分析儀，建立增益-相位量測平台，以量測單相及四相電流穩流模組雛型電路之開迴路各轉移函數，驗證其系統之特性。

    This thesis presents the system modeling and analysis of the single-phase and the interleaved four-phase current regulation modules, for use in the electrical discharge machine. With the derivation and validation of the open-loop transfer functions for the single-phase and the interleaved four-phase current regulation modules, the system characteristic analysis and the compensator design have been developed.
    Based on the equivalent circuit models of the three-terminal PWM switching cell, the small-signal models of the single-phase and the interleaved four-phase current regulation modules have been proposed to compared with the SIMPLIS® simulation results. Moreover, the compensator has been designed in order to obtain sufficient DC gain, bandwidth, gain margin, and phase margin for the interleaved four-phase CCM CRM by utilizing the derived open-loop transfer functions.
    Finally, the Gain/Phase measurement station has been built by using the PSM1735, Gain/Phase Analyzer, to validate the derived open-loop transfer functions for the system characteristic analysis.

    Chapter 1. INTRODUCTION 1 1.1 Background 1 1.2 Motivation 8 1.3 Thesis Outline 10 Chapter 2. MODELING OF SINGLE-PHASE CCM CURRENT REGULATION MODULE 11 2.1 Introduction 11 2.2 DC and Small-Signal Analyses of Single-Phase CCM Current Regulation Module 12 2.2.1. DC Analysis 15 2.2.2. Open-Loop Control-to-Output 15 2.2.3. Open-Loop Line-to-Output 17 2.2.4. Open-Loop Output Admittance 18 2.2.5. Open-Loop Input Impedance 19 2.3 Validations with SIMPLIS® Simulation 20 2.3.1. Open-Loop Control-to-Output 21 2.3.2. Open-Loop Line-to-Output 23 2.3.3. Open-Loop Output Admittance 25 2.3.4. Open-loop Input Impedance 27 2.4 Summary 29 Chapter 3. MODELING OF INTERLEAVED FOUR-PHASE CCM CURRENT REGULATION MODULE 30 3.1 Introduction 30 3.2 DC and Small-Signal Analyses of Interleaved Four-Phase CCM Current Regulation Module 31 3.2.1. DC Analysis 33 3.2.2. Open-Loop Control-to-Output 34 3.2.3. Open-Loop Line-to-Output 35 3.2.4. Open-Loop Output Admittance 37 3.2.5. Open-Loop Input Impedance 38 3.3 Validations with SIMPLIS® Simulation 39 3.3.1. Open-Loop Control-to-Output 40 3.3.2. Open-Loop Line-to-Output 42 3.3.3. Open-Loop Output Admittance 44 3.3.4. Open-Loop Input Impedance 46 3.4 Comparison between Single-Phase and Interleaved Four-Phase modules 48 3.5 Compensator Design 54 3.6 Summary 61 Chapter 4. EXPERIMENTAL RESULTS 62 4.1 Introduction 62 4.2 Experimental Results of Single-Phase Prototype Circuit 63 4.3 Experimental Results of Interleaved Four-phase Prototype Circuit 69 4.4 Summary 75 Chapter 5. CONCLUSION AND FUTURE WORK 76 Appendix A. MATHCAD DESIGN PROGRAMS 78 A.1 Transfer Functions of Signal-Phase Current Regulation Module 78 A.2 Transfer Functions of Interleaved Four-Phase Current Regulation Module 79 A.3 Compensator Design for Interleaved Four-Phase Current Regulation Module 80 REFERENCES 82

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