articleIEEE Transactions on Power ElectronicsAug 19, 2014Closed access

A Maximum Efficiency Point Tracking Control Scheme for Wireless Power Transfer Systems Using Magnetic Resonant Coupling

HLHongchang LiJLJie LiKWKangping WangWCWenjie ChenXYXu Yang

Xi'an Jiaotong University

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Abstract

With a good balance between power transfer distance and efficiency, wireless power transfer (WPT) using magnetic resonant coupling is preferred in many applications. Generally, WPT systems are desired to provide constant output voltage with the highest possible efficiency as power supplies. However, the highest efficiency is not achieved by the reported closed-loop WPT systems that maintain constant output voltage against coupling and load variations. In this paper, an efficiency evaluation method is put forward to evaluate the closed-loop control schemes. Furthermore, a maximum efficiency point tracking control scheme is proposed to maximize the system efficiency while regulating the output voltage. This…

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Topics & keywords

Topics
Keywords
  • Wireless power transfer
  • Control theory (sociology)
  • Voltage
  • Maximum power transfer theorem
  • Coupling coefficient of resonators
  • Coupling (piping)
  • Electrical efficiency
  • Power (physics)
UN Sustainable Development Goals
  • Affordable and clean energy
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