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Wireless transmission of electric energy

Wireless transmission of electric energy. Antoine Caillierez, PhD student , Supelec (France) Advisor : Daniel Sadarnac , Supelec (France) Co advisor : Alain Jaafari, Supelec (France). PACIFIC’2011 International conference

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Wireless transmission of electric energy

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  1. Wireless transmission of electricenergy Antoine Caillierez, PhDstudent, Supelec (France) Advisor: Daniel Sadarnac, Supelec (France) Co advisor: Alain Jaafari, Supelec(France) PACIFIC’2011 International conference PantographCatenary Interaction Framework for Intelligent Control

  2. Introduction: • The need: • An efficient method for transferring large power level over moderates distances to movingloads. • The principle: • Mutuallycoupledcoils. • HF converter

  3. Someprojects over the world • Bombardier, Volvo, Van Hool

  4. Someprojects over the world • Serpentine until 2004 (Lausanne, CH) • small public automatedvehicle. • Inductive power supply • OLEV Project (KAIST, Seoul, South Korea) • Efficiency: 74% with 13cm airgap. • OAK Ridge National Laboratory (Utah, USA)

  5. Experimental model • Serieparallelresonantconverter • Design for 100W withat 4 cm air gap. • 42V; 75kHz switchingfrequency • Rectangularcoils (primary and secondary) : 10x20cm

  6. Magnetic transformer • Secondary voltage: • Rectangularcoils

  7. h Rayon r2 Rayon r1 a1 a2 NAspires b2 B b1 A NBspires Mutual Inductance • Coupling Factor: • Mutual inductance betweentwowindings: • Neumann formula:

  8. Results: Mutual Inductance Air gap Z=7cm Air gap Z=1cm

  9. Results: Secondary power

  10. Conclusion • Efficiency. (>90%) • new lines of research for EV and transportation. • Potential for Wireless transfer of high power.

  11. Questions?

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