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Chapter 2 establishes the fundamental principles and circuit modeling of wireless power transfer (WPT) systems, particularly those utilizing inductive links. It details magnetic flux phenomena, key parameters like coupling coefficient (k) and mutual inductance (M), and presents equivalent circuit models for 2-coil links, optimizing power transfer efficiency (PTE) and power delivered to load (PDL). The chapter highlights that Rx LC-tank configurations (series/parallel) depend on Q-factor and desired voltage-current characteristics. Furthermore, it introduces multi-coil systems (3-coil, 4-coil) for enhanced efficiency and flexibility in weak coupling conditions. The chapter also analyzes essential DC-AC (power amplifiers) and AC-DC converters (rectifiers), their principles, design considerations, and various configurations. This comprehensive content provides the foundational understanding necessary for WPT system design.

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Summary

  • 章节

  • 发表日期：

    2025年

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  • Byunghun Lee,
  • Hyun-Su Lee,
  • Junhyuck Lee,
  • Hyung-Min Lee

摘要

Chapter 2 establishes the fundamental principles and circuit modeling of wireless power transfer (WPT) systems, particularly those utilizing inductive links. It details magnetic flux phenomena, key parameters like coupling coefficient (k) and mutual inductance (M), and presents equivalent circuit models for 2-coil links, optimizing power transfer efficiency (PTE) and power delivered to load (PDL). The chapter highlights that Rx LC-tank configurations (series/parallel) depend on Q-factor and desired voltage-current characteristics. Furthermore, it introduces multi-coil systems (3-coil, 4-coil) for enhanced efficiency and flexibility in weak coupling conditions. The chapter also analyzes essential DC-AC (power amplifiers) and AC-DC converters (rectifiers), their principles, design considerations, and various configurations. This comprehensive content provides the foundational understanding necessary for WPT system design.