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E-grāmata: Wireless Power Transfer: Between Distance and Efficiency

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  • Formāts: PDF+DRM
  • Sērija : CPSS Power Electronics Series
  • Izdošanas datums: 14-Jan-2020
  • Izdevniecība: Springer Verlag, Singapore
  • Valoda: eng
  • ISBN-13: 9789811524417
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Wireless Power Transfer: Between Distance and EfficiencyPalielināt
  • Formāts: PDF+DRM
  • Sērija : CPSS Power Electronics Series
  • Izdošanas datums: 14-Jan-2020
  • Izdevniecība: Springer Verlag, Singapore
  • Valoda: eng
  • ISBN-13: 9789811524417
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Between Distance and Efficiency

Focusing on inductive wireless power transfer (WPT), which relies on coil resonators and power converters, this book begins by providing the background and basic theories of WPT, which are essential for newcomers to the field. Then two major challenges of WPT – power transfer distance and efficiency – are subsequently addressed, and multi-resonator WPT systems, which not only offer a way to extend power transfer distance but also provide more flexibility, are investigated. Recent findings on techniques to maximize the power transfer efficiency of WPT systems, e.g. maximum efficiency point tracking, are also introduced. Without the constraint of cables, wireless power transfer (WPT) is an elegant technique for charging or powering a range of electrical devices, e.g. electric vehicles, mobile phones, artificial hearts, etc. Given its depth of coverage, the book can serve as a technical guideline or reference guide for engineers and researchers working on WPT.

Part I Fundamentals of Magnetic Resonance Wireless Power Transfer
1 Introduction to Magnetic Resonance WPT
3(8)
1.1 Nikola Tesla's Early Work
4(1)
1.2 Inductive Power Transfer (TPT)
5(1)
1.3 Planar Wireless Charging Technology and Qi
6(1)
1.4 The Four-Coil System
7(1)
1.5 Summary
8(1)
References
8(3)
2 Basic Theory of Magnetic Resonance WPT
11(16)
2.1 From Coupled Inductors to Magnetic Resonance Coupling
11(3)
2.2 Characteristics of an SS WPT System
14(9)
2.2.1 Reflected Impedance
14(1)
2.2.2 Induced Voltages, Currents and Gains
14(2)
2.2.3 Efficiency
16(3)
2.2.4 Output Power
19(1)
2.2.5 Input Impedance, Zero Phase Angle, and Bifurcation
20(3)
References
23(4)
Part II Multi-resonator WPT Systems
3 General Model of Multi-resonator Systems
27(8)
3.1 Circuit Model
27(1)
3.2 Mutual Inductance Calculation
28(3)
3.2.1 Coaxial Coils
28(2)
3.2.2 Non-coaxial Coils
30(1)
3.3 Efficiency Optimization Methodology
31(2)
References
33(2)
4 Straight Domino-Resonator Systems
35(14)
4.1 Introduction
35(1)
4.2 Efficiency of a Straight Domino-Resonator System
36(1)
4.3 Methodology for Power Flow Analysis
37(2)
4.4 Effects of Cross-Coupling
39(3)
4.5 Spacing Optimization of a Straight Domino-Resonator System
42(3)
4.5.1 Three-Resonator System
42(1)
4.5.2 n-Resonator System
43(2)
4.6 Summary
45(3)
References
48(1)
5 Circular Domino-Resonator Systems
49(14)
5.1 Introduction
49(1)
5.2 Model of the Circular Domino-Resonator System
50(2)
5.3 Simplified Analysis Without Cross-Couplings
52(4)
5.4 Optimization of Circular Domino-Resonator Systems with Cross-Couplings
56(3)
5.5 Practical Verification
59(1)
5.6 Discussion
60(1)
Reference
61(2)
6 A Method to Create More Degrees of Freedom for Designing WPT Systems---Coil Splitting
63(14)
6.1 Introduction
63(1)
6.2 Theoretical Analysis
63(2)
6.3 Computer-Aided Analysis and Verifications
65(3)
6.3.1 Use of the Inner Coil as Coil-a and the Outer Coil as Coil-1
67(1)
6.3.2 Use of the Inner Coil as Coil-1 and Outer Coil as Coil-a
67(1)
6.3.3 Choice of Structures and Effects of Source Impedance
68(1)
6.4 Experimental Verification
68(4)
6.4.1 Efficiency Evaluation
71(1)
6.4.2 Current Stress Evaluation
72(1)
6.5 Conclusion
72(1)
References
73(4)
Part III Maximum Efficiency Operation
7 Review of Maximum-Efficiency-Operation Techniques
77(22)
7.1 Theory of Maximum-Efficiency-Operation WPT
77(1)
7.2 Factors Affecting Maximum-Efficiency-Operation
78(2)
7.2.1 Efficiency Degradation Due to Variations in Magnetic Coupling
78(1)
7.2.2 Efficiency Degradation Due to Load Resistance Variation
79(1)
7.3 Review of MEO Strategies
80(8)
7.3.1 Using Standard DC-DC Converters on the Receiver Side
80(1)
7.3.2 Using Boost-Type Converters on the Receiver Side
81(3)
7.3.3 Using Transmitter-Side On-Off Keying (OOK) Modulation
84(1)
7.3.4 Using Reconfigurable Impedance Transformation Circuits
85(2)
7.3.5 Using Reconfigurable Coil-Resonant Circuits
87(1)
7.4 Review of MEO Control Schemes
88(6)
7.4.1 Perturbation and Observation (P&O)
89(2)
7.4.2 Calculating Optimal Control Variable Based on Coupling Estimation
91(2)
7.4.3 Voltage Ratio Control
93(1)
7.5 Comparison and Discussion
94(2)
7.5.1 Light-Load Conditions (RL < RL_OPT)
94(1)
7.5.2 For Arbitrary Load Resistance
95(1)
7.5.3 Control Schemes Comparison
95(1)
7.6 Conclusion
96(1)
References
96(3)
8 Using a DC--DC Converter and the P&O Scheme for MEO Without Transmitter and Receiver Communication---A Design Example
99(8)
8.1 Introduction
99(1)
8.2 Searching for the Optimal Duty Cycle
99(4)
8.3 Experimental Verifications
103(2)
8.4 Conclusion
105(2)
9 Transmitter-Side On-Off Keying Modulation
107(14)
9.1 Introduction
107(1)
9.2 Derivation of the Constant-Input-Voltage Principle
108(3)
9.2.1 Theoretical Analysis on WPT Systems with Output Rectifiers
108(2)
9.2.2 Theoretical Analysis on WPT Systems with Constant Output Voltage
110(1)
9.3 An OOK Modulated WPT System
111(3)
9.3.1 Analysis on the Effect of OOK
112(2)
9.3.2 Simulation Study
114(1)
9.4 Experimental Verifications
114(5)
9.5 Conclusion
119(2)
10 Reconfigurable WPT Systems---A Design Example
121
10.1 Introduction
121(1)
10.2 Use Receiving Coil Splitting to Enable High Efficiency for Smaller Load Resistances
121(6)
10.3 New Reconfigurable Topologies for Maximizing Efficiency and Power over Wide Load Range
127(5)
10.3.1 Extending High-Efficiency Region to the Lower Load Resistance Range
127(1)
10.3.2 Extending High-Efficiency Region to the Higher Load Resistance Range
128(3)
10.3.3 VA Rating Minimization or Power Maximization
131(1)
10.4 Experimental Verification
132(3)
10.5 Conclusion
135
Wenxing Zhong: Since 2010, he has worked on wireless power transfer and pioneered the research on maximum efficiency point tracking technique which is essential for wireless power transfer systems. He has coauthored 32 technical papers including 17 refereed journal papers and held 3 US patents. In 2015 and 2016, he received two Transaction First Prize Paper Awards from the IEEE Power Electronics Society. In 2018, he was recruited by "the Thousand Young Talents Plan" of the Chinese Central Government.

Dehong Xu: Since 1996, he has been with the College of Electrical Engineering, Zhejiang University, China, as a Full Professor. He was a Visiting Scholar at the University of Tokyo, Japan from 1995 to 1996. From June to December 2000, he was a Visiting Professor at the CPES of Virginia Tech, USA. From February 2006 to April 2006, he was a Visiting Professor at the ETH, Switzerland. His current research interests include power electronics topology and control, power conversion for energy saving, and renewable energy. He has authored or coauthored six books and more than 160 IEEE Journal and Conference papers. He holds more than 30 Chinese patents and 3 US patents. Dr. Xu is the recipient of four IEEE journal or conference paper awards. Since 2013, he has been the President of the China Power Supply Society. He was an At-Large Adcom Member of the IEEE Power Electronics Society from 2017 to 2019. He is an Associate Editor of IEEE Transactions on Power Electronics. He was the IEEE PELS Distinguish Lecturer in 20152017 and received the IEEE PELS R. D. Middlebrook Achievement Award in 2016.



Ron Shu Yuen Hui: He is the holder of the Philip Wong Wilson Wong Chair Professorship at the University of Hong Kong. Since July 2010, he has concurrently held a part-time Chair Professorship of Power Electronics at Imperial College London. He has published over 200 technical papers, including more than 170 refereed journal publications and book chapters. Over 55 of his patents have been adopted by industry. He is an Associate Editor of IEEE Transactions on Power Electronics and IEEE Transactions on Industrial Electronics. In 2010, he received the IEEE Rudolf Chope R&D Award from the IEEE Industrial Electronics Society, the IET Achievement Medal (The Crompton Medal), and was elected to the Fellowship of the Australian Academy of Technological Sciences & Engineering. He is the recipient of the 2015 IEEE William E. Newell Power Electronics Award. 
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