Developing Radio Sensing Techniques for Insulation Degradation Diagnosis of Ground Coils of Superconducting Maglev Systems

• Project/Area Number: 24560335
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: The University of Tokushima
• Principal Investigator: KAWADA MASATAKE 徳島大学, ソシオテクノサイエンス研究部, 准教授 (00303686)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2012: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
• Keywords: 超電導磁気浮上式鉄道 / 地上コイル / 絶縁診断 / 部分放電 / 放射電磁波 / 電磁波センシング技術 / 計算電磁気学手法

Outline of Final Research Achievements

In superconducting magnetic levitation (Maglev) systems, superconducting magnets are located on both sides of the vehicles and ground coils are attached to sidewalls of the guideway; the vehicles are levitated, guided, and propelled over the guideway by the electromagnetic force between them. Because a partial discharge (PD), which is a degradation symptom of insulating resin of the ground coils, emits wideband electromagnetic (EM) waves, a radio sensing system for locating the PD by receiving the EM waves was developed in this study. The experimental results showed that the PD occurring in a ground coil with defects could be located by using the radio sensing system.

Research Products

• [Presentation] Insulation Failure Detection in Propulsion Coil for Superconducting Maglev Using Radio Interferometer System (2014)
  • Author(s): Satoru Ota, Masao Suzuki, Ryohei Ikeda, Hiroshi Yoda, and Masatake Kawada
  • Organizer: The 22nd International Conference on Magnetically Levitated Systems and Linear Drives
  • Place of Presentation: Windsor Atlantica Hotel (Rio de Janeiro, Brazil)
  • Year and Date: 2014-09-28 – 2014-10-01
• [Presentation] Location of Partial Discharge Occurring in Propulsion Coil of Superconducting Maglev System using Radio Interferometer System with EM Shield (2014)
  • Author(s): Masatake Kawada, Masao Suzuki, and Ryohei Ikeda
  • Organizer: The 32nd IEEE Electrical Insulation Conference
  • Place of Presentation: Sheraton Philadelphia Downtown (Philadelphia, USA)
  • Year and Date: 2014-06-08 – 2014-06-11
• [Presentation] Location of Partial Discharge Occurring in Ground Coil of Superconducting Maglev System under Noise Environment using Radio Interferometer System (2013)
  • Author(s): Masatake Kawada, Masao Suzuki, and Ryohei Ikeda
  • Organizer: The 31st IEEE Electrical Insulation Conference
  • Place of Presentation: Ottawa (Canada)