Transient Analysis of Dual LCC Compensated IPT System by Dynamic Gyrator = 동적 자이레이터에 의한 듀얼 LCC 보상 IPT 시스템의 과도 분석

다국어 초록 (Multilingual Abstract)

This thesis addresses the concept of dynamic gyrator model used for a dual LCC compensated IPT system to anlyze the transient state. The core idea is to apply the well-known dynamic phasor framework to the IPTS which introduces the dynamic gyrator in the phasor domain. In contrast to the conventional static gyrator, which is only valid for the steady state conditions, the dynamic gyrator model is applicable to both steady state and transient state. Apart from the transient analysis, the other significant impact of this research is the circuit order reduction. The original dual LCC compensated IPT system consisting of four resonant LC tanks and corresponding to an eight-order circuit, is reduced to a fourth order system under resonant conditions. This order reduction significantly simplies the dynamic analysis and control design and eliminates the necessity of the complicated high order formulations required in conventional IPT modelling and design methods. The proposed model is validated through extensive simulations and experimentsal measurements on a 260 W dual LCC compensated IPT prototype tuned at 60 kHz. The results confirm that the dynamic gyrator model can reliably predict dynamic behavior under resonant frequency and steady state characteristics under a wide frequency range. A preliminary extension of the model to non resonant transient operation is also introduced, however, its accuracy has not been fully verified and is therefore identified as an important direction for future reseach.

목차 (Table of Contents)

• Abstract I
• List of Figures III
• List of Tables IV
• Chapter 1. Introduction 1
• Chapter 2. Theoretical Analysis and Mathematical Modelling 3
• 2.1 Dynamic Gyrator Modelling of a Dual LCC Compensated IPTS using Dynamic Phasor 3
• 2.2 Dynamic Gyrator-based IPT system Analysis 3
• 2.3 Comparison of Dynamic gyrator-based analysis with other modelling approaches 13
• Chapter 3. Simulations Results and Analysis 15
• 3.1 Circuit Parameters and System Specifications 15
• 3.2 Step Input Response Characteristics 15
• 3.3 Transient Output Voltage 16
• 3.4 Comparison of Simulink and Transfer Function Responses to Step Input 18
• 3.5 DC Voltage Gain 20
• Chapter 4. Experimental Implementation and Validation 22
• 4.1 Experimental Setup Preparation 22
• 4.2 Experimental Equipments Used 25
• 4.3 Transient Output Voltage Measurement 26
• 4.4 Measurement of DC Voltage Gain 28
• Chapter 5. Results and Discussions 30
• Conclusion 33
• Appendix: Future Work and Extensions 34
• Quasiresonance Modelling of the Dual LCC IPT System: 34
• Simulation and Evaluation of the Quasiresonance Model: 42
• Summary 45
• Publications. 46
• References 47
• Acknowledgments 49
• Curriculum Vitae 50