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Imura Lab
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A lab researching technology for wirelessly transmitting power to electric vehicles and more.
AboutAbout the lab
A lab specializing in wireless power transfer.
Imura Lab studies wireless power transfer, which sends power without cables or other physical connections.
Using magnetic field coupling (electromagnetic induction) and electric field coupling based on resonance phenomena, the lab works on dynamic wireless charging for electric vehicles, wireless power supply to robots, and power supply to medical devices.
The lab also studies suppression of leakage magnetic fields, optimization of power transmission coil design, and the integration of dynamic wireless charging with smart grids.
Key terms
- Wireless power transfer
- Technology that sends power to a distant device without connecting it with cables or the like
- Magnetic field coupling
- A method in which coils are linked through a magnetic field to transmit power
- Electric field coupling
- A method that uses electrode plates instead of coils to transmit power through an electric field. Its structure is simple
- Leakage magnetic field
- The magnetic field that spreads around the coil during power transfer. It is considered to have possible harmful effects on the human body
NewsLab news
A student was selected for the Readers' Award of the Nikkei xTECH Power Electronics Award 2025
Started a demonstration experiment of PRC slab pavement that supports wireless power supply
ResearchResearch themes
Imura Lab specializes in wireless power transfer. Using magnetic field coupling and electric field coupling, it studies dynamic wireless charging of electric vehicles, wireless power supply to robots, and power supply to medical devices.
*Illustrative imageDynamic wireless charging
The lab studies technology that embeds coils in roads to wirelessly transmit power to electric vehicles while they are driving. It verifies this with test benches that simulate driving and with real-vehicle experiments on the lab's test track, the longest in Japan (about 100 m).
*Illustrative imageSolar power and dynamic charging
The lab proposes methods of supplying power to moving vehicles from solar panels placed near the road. It verifies both a system connected to the power grid and a stand-alone system independent of the grid through outdoor vehicle experiments.
*Illustrative imageCoil embedding and coil design
The lab embeds coils in asphalt and reinforced concrete and evaluates them electrically and mechanically. For coil design, it examines short-type, open-type, and edgewise coils, among others.
*Illustrative imageSuppression of leakage magnetic fields
High-power charging spreads strong magnetic fields into the surroundings, which may be harmful to the human body. The lab studies methods such as optimizing the magnitude and phase of the voltage applied to adjacent transmitting coils to reduce the leakage magnetic field at a distance.
MembersFaculty
The members of Imura Lab consist of faculty, postdoctoral researchers, secretaries, and master's and undergraduate students.As of 2026
- ProfessorTakehiro Imura
- Assistant ProfessorLuo Weisen
- Assistant ProfessorAoi Oyane
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “FES, Electric vehicle charging station, Wiesbaden (LRM )” Matti Blume / CC BY-SA 4.0 (cropped)
- Dynamic wireless charging: “Primove Charging Pad1 Markuskirche Mannheim Germany” Sebastian Wendel / CC BY-SA 4.0 (cropped)
- Solar power and dynamic charging: “APTERA2019-SOLAR-COMPLETE 03” Chris Anthony, CEO, Aptera Motors Corp. / CC BY-SA 4.0 (cropped)
- Coil embedding and coil design: “100k wireless charging coils ( )” Oak Ridge National Laboratory / CC BY 2.0 (cropped)
- Suppression of leakage magnetic fields: “Bar-magnets-repelling-iron-filings-max” MikeRun, Vera Wurmsdobler / CC BY-SA 4.0 (cropped)
- Related lab (星研究室): “VEM motor Wernigerode” VEM motors GmbH / CC BY-SA 4.0 (cropped)
- Related lab (近藤研究室): “Roscoe Wind Farm in West Texas” Matthew T Rader / CC BY-SA 4.0 (cropped)
- Related lab (山本研究室): “XBio illustration – Functional Magnetic Resonance Imaging (fMRI)” explorebiology / CC BY 4.0 (cropped)
- Related lab (杉山研究室): “Solar World wafer ( )” Oregon Department of Transportation / CC BY 2.0 (cropped)
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