Development of 1-MW Inductive Power Transfer System for a High-Speed Train

Jae Hee Kim, Byung Song Lee, Jun Ho Lee, Seung Hwan Lee, Chan Bae Park, Shin Myung Jung, Soo Gil Lee, Kyung Pyo Yi, Jeihoon Baek

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409 Scopus citations


Design and fabrication of a 1-MW inductive power transfer (IPT) system that supplies power to the vehicle in real time without any battery charge is proposed for a high-speed train. The IPT system consists of a 1-MW resonant inverter, a 128-m transmitter, four pickups, including rectifiers, and a wireless feedback network to maintain a constant output voltage of the pickups. The operating frequency of the system is 60 kHz to achieve efficient power transfer with a large air gap. The measured efficiency of the IPT system at the 818-kW output power of the pickups for the 5-cm air gap is 82.7%. The electromagnetic field and the induced voltage at the rail are also measured for safety evaluation. The fabricated IPT system was adapted to the high-speed train, and the train successfully accelerates to a speed of 10 km/h according to startup procedures.

Original languageEnglish
Article number7070703
Pages (from-to)6242-6250
Number of pages9
JournalIEEE Transactions on Industrial Electronics
Issue number10
StatePublished - 1 Oct 2015


  • Inductive power transfer (IPT)
  • high power
  • pick-up
  • railway


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