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Efficiency Enhanced DC-DC Converter Using Dynamic Inductor Control
Omar Abu Mohareb
Verlag Springer Vieweg, 2019
ISBN 9783658251475 , 152 Seiten
Format PDF, OL
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Geräte
Acknowledgement and Dedication
6
Table of Contents
7
List of Figures
10
List of Tables
15
Abbreviations and Nomenclatures
16
Abstract
21
Kurzfassung
23
1 Introduction
25
1.1 Motivation
25
1.2 Scope
26
1.3 Dissertation Outline
27
2 Literature Review and State of the Art
29
2.1 Literature Review on Efficient DC-DC Converters
29
2.2 Inductor in DC-DC Converter
32
2.3 Effect of Inductor Current on Inductance Value
34
2.4 Inductance Value Effect on Root Mean Square Losses
36
2.5 State-of-the-Art of Inductor Control in DC-DC Converters
38
3 Boost Battery Charger Modeling
41
3.1 Modeling Non-Ideal Components
43
3.1.1 Lithium-Ion Battery Model
43
3.1.2 DC Power Source Model
45
3.1.3 Inductor Model
46
3.1.4 Capacitor Model
47
3.1.5 Power Switches Models
47
3.2 Boost Battery Charger Models
49
3.2.1 State-Space Averaging Model
50
3.2.2 Canonical Model
57
3.3 Maximum Energy Transfer in DC-DC Converters
60
4 Dynamic Inductor Control Concept
64
4.1 Inductance Value Effect on Efficiency
64
4.2 Variable Inductor Structure
66
4.3 Control Methodology
71
4.4 Stability Investigation
75
4.5 Advantages of Dynamic Inductor Control
78
5 Dynamic Inductor Control Simulation
79
5.1 Controller Simulation
79
5.2 Simulation Assumptions and Parameters
81
5.3 Simulation Results
83
5.4 Evaluating DIC with other DC-DC Converter Type
87
5.5 Maximum Energy Transfer Evaluation
89
6 Dynamic Inductor Control Implementation
93
6.1 Prototype Converter with Dynamic Inductor Control
93
6.2 Controller Implementation
96
7 Experimental Results
101
7.1 Steady-State Performance with Dynamic Inductor Control
101
7.1.1 Steady-State Performance at Different Load Currents
101
7.1.2 Steady-State Performance at Different Source Voltages
105
7.1.3 Comparison of Efficiency with Conventional Boost Converter
106
7.1.4 Performance as Li-ion Battery Charger
108
7.2 Transient Performance of Converter with Dynamic Inductor Control
113
7.2.1 DC-DC Converter Transient Performance as DIC is Enabled
113
7.2.2 Step-Changed Source Voltage Transient with Enabled DIC
115
7.2.3 Load Transient with Enabled DIC
117
8 Conclusions and Future Work
121
8.1 Conclusions
121
8.2 Future Work
123
References
125
Appendix
133
A1. Battery Boost Charger Canonical Model
133
A2. Simulink Models
136
A3. Schematic and Bill of Materials for the Prototype
140
A4. Transfer Functions Analysis of Current Sensor
151
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