Title Page
Abstract
Contents
CHAPTER 1. Introduction 11
1.1. Background and Motivation 11
1.2. Averaged Converter Model 15
1.3. Pulse Width Modulation 19
1.4. Outline of Dissertation 20
CHAPTER 2. MPC Design for Inner loop 22
2.1. State-Feedback MPC Design for inner loop 23
2.1.1. Steady-State Condition 23
2.1.2. State-Feedback MPC Design 24
2.1.3. Closed-Loop Stability Analysis for State-Feedback MPC 26
2.1.4. Handling State Constraints 29
2.2. Output-Feedback MPC Design for Inner Loop 31
2.2.1. Observer Design and Certainty Equivalent Output-Feedback MPC 32
2.2.2. Closed-Loop Stability Analysis for Output-Feedback MPC 35
2.3. Chapter Summary 40
CHAPTER 3. Experiments 42
3.1. Experiments for State-Feedback MPC 44
3.2. Experiments for Output-Feedback MPC 47
3.3. Chapter Summary 50
CHAPTER 4. Summary and Future Research 60
4.1. Summary 60
4.2. Future Research 62
APPENDIX A. Appendix 64
A.1. Derivation of Steady State Condition 64
A.2. Derivation of Stability Condition for Matrix Φ(u0(rI))(이미지참조) 65
A.3. Proof of Lemma 2.2.1 68
A.4. A PI gain tuning guideline 69
Bibliography 71
요약문 80
Curriculum Vitae and Education 84
Publications 85
Patents 87
Fig. 1.1. Boost DC/DC converter. 15
Fig. 1.2. Circuit topologies of a boost converter with the switch in the ON state and OFF state. 16
Fig. 1.3. Control system based on the PWM method. 19
Fig. 1.4. PWM examples. 20
Fig. 2.1. The cascade control system. 22
Fig. 2.2. The optimization procedure. 26
Fig. 3.1. Admissible ranges of the steady-state control and the capacitor voltage reference. 43
Fig. 3.2. Hardware configuration for the experiment. 44
Fig. 3.3. Voltage tracking performance and corresponding load current behavior of the state-feedback MPC with the reference transition from 67V to 100V. 45
Fig. 3.4. The behavior of the control input after the reference transition over 120㎳. 46
Fig. 3.5. Voltage tracking performance and corresponding load current behavior of the state-feedback MPC with the reference r=100V (magnified) with the state constraint. 47
Fig. 3.6. Voltage tracking performance and corresponding load current behavior of the state-feedback MPC with the reference r=100V (magnified) without the state constraint. 48
Fig. 3.7. Voltage tracking performance and corresponding load current behavior of the state-feedback MPC with the reference r=120V. 49
Fig. 3.8. Voltage regulation performance and corresponding load current of the state-feedback MPC under input voltage change. 50
Fig. 3.9. Voltage regulation performance and corresponding load current of the state-feedback MPC under load resistance change from 75Ω to 37.5Ω 51
Fig. 3.10. Tracking performance of the proposed state-feedback MPC with the sampling period h=0.2㎳. 52
Fig. 3.11. Tracking performance of Rodriguez's MPC. 52
Fig. 3.12. The voltage regulation performance and the corresponding current response of the proposed state-feedback MPC with the sampling period h=0.2㎳ under a load resistance change from 75Ω to 37.5Ω. 53
Fig. 3.13. The voltage regulation performance and the corresponding current response of Rodriguez's MPC under a load resistance change from 75Ω to 37.5Ω. 53
Fig. 3.14. Tracking performance of the proposed state-feedback MPC with the sampling period h=0.1㎳. 54
Fig. 3.15. The voltage regulation performance and corresponding current response of the proposed state-feedback MPC with the sampling period h=0.1㎳ under a load resistance change from 75Ω to 37.5Ω. 54
Fig. 3.16. Tracking performance of the proposed output-feedback MPC with the sampling period h=0.2㎳. 55
Fig. 3.17. Tracking performance of Rodriguez's MPC with the current observer. 55
Fig. 3.18. State estimation error. 56
Fig. 3.19. The voltage regulation performance and the corresponding current response of the proposed output-feedback MPC with the sampling period h=0.2㎳ under a load resistance change from 75Ω to 37.5Ω. 56
Fig. 3.20. The voltage regulation performance and the corresponding current response of Rodriguez's MPC with the current observer under load a resistance change from 75Ω to 37.5Ω. 57
Fig. 3.21. Tracking performance of the proposed output-feedback MPC with the sampling period h=0.1㎳. 57
Fig. 3.22. The voltage regulation performance and corresponding current response of the proposed output-feedback MPC with the sampling period h=0.1㎳ under a load resistance change from 75Ω to 37.5Ω. 58
Fig. 3.23. Tracking performance of the classical cascade PI voltage control system. 58
Fig. 3.24. The voltage regulation performance and corresponding current response of the classical cascade PI voltage control system under load a resistance change from 75Ω to 37.5Ω. 59