Basic theory of inductive coupling

Basic theory of inductive coupling

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The noncontact electricity transmission method for supplying electricity to an electrical apparatus is based on Faraday's law and is a recent (<20 years old) development in the field of household appliances. The inductive coupling method is based on electromagnetic induction and was developed by M. Faraday in 1831. A recent application of the technology is the wireless power transfer (WPT) system. Based on the current energy situation, interest in electric vehicles (EVs) has increased, and WPT has attracted attention as a next-generation technology for charging of EV batteries. The noncontact electricity transmission technique has also attracted attention for medical applications. This chapter explains the basic characteristics of WPT systems and the basic theory of inductive coupling [1-7].

Chapter Contents:

  • 2.1 Introduction
  • 2.2 WPT system
  • 2.2.1 Basic theory of WPT system
  • 2.2.2 Microwave method
  • 2.2.3 Magnetic resonance method
  • 2.2.4 Electrical resonance method
  • 2.2.5 Electromagnetic induction method
  • 2.3 Magnetic induction
  • 2.3.1 Power transformer
  • 2.3.2 Magnetic induction (LC mode)
  • 2.4 Medical applications
  • References

Inspec keywords: inductive power transmission; electric vehicle charging; battery powered vehicles

Other keywords: electric vehicles; wireless power transfer system; electromagnetic induction; electrical apparatus; WPT system; EV batteries charging; medical applications; household appliances; electricity supply; inductive coupling method; noncontact electricity transmission method; Faraday's law

Subjects: Electromagnetic induction

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