Characteristics of an EIE-core variable inductor

Mitsuru Maeda, Takashi Ohinata, Tomoyuki Aoki, Shigeaki Akatsuka, Mineo Kawakami, Hiromichi Sato, Osamu Ichinokura

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The EIE core variable inductor is a device of variable inductance that is controlled by DC current. This device controls the cancellation of AC magnetic flux and thus always maintains the flux density on the magnetic path within the saturation flux density in control mode. It cancels high harmonic distortion and does not require gaps, which reduce distortion. Thus, it is simply structured and easy to scale up. This paper describes the basic structure and characteristics of the device, and presents examples of its application to electrical power equipment.

Original languageEnglish
Pages (from-to)22-33
Number of pages12
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Issue number4
Publication statusPublished - 2003 Sep


  • EIE core
  • Magnetic device
  • Variable inductance

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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