Tohoku University

Information

Professor Kenji Nakamura
Assistant Professor Yoshiki Hane
NAKAMURA LAB.
Department of Management Science and Technology, Graduate School of Engineering, Tohoku University

 Web Site 

Applications：Motor, Power Generator, Magnetic Gear
Technical Themes：IPM、SR
Markets：Automotive, Electric Appliance, Power Equipment

Introduction

The Nakamura Laboratory at Tohoku University is working on their objective to “generate, transport, convert, and develop technology for the use of next generation energy in an environment where human society and natural ecosystems coexist in harmony.” Their research involves comparing simulations and actual measurements to achieve smaller sizes, higher power and better efficiency in electric equipment such as motors, power generators and transformers. They are particularly focused on gears that transmit power and are making efforts to improve the performance of magnetic gears. They also promote development of technology for application to electric vehicles as well as research on power generation systems including generators and other equipment. JMAG acknowledges their philosophy and provides software for use in their research activities.

List of academic papers using JMAG

• A. Nagai, K. Mitsuya, K. Nakamura, “Transverse-Flux-type Switched Reluctance Motor with Permanent Magnets applying Reverse Bias Magnetic Field“，IPEC-Himeji 2022, 17H1-3, 2022.
• S. Sakurai, Y. Uchiyama, K. Nakamura, “Prototype Tests of Segment-type Outer-Rotor PM motor“，IPEC-Himeji 2022, 17H2-3, 2022.
• Y. Yu, S. Hiramoto, K. Nakamura, “Prototype Test Results of Inset-type Permanent Magnet Machine made of NANOMET® Laminated Core“，IPEC-Himeji 2022, 17H2-4, 2022.
• Y. Mizuana, K. Nakamura, Y. Suzuki, Y. Tachiya, K. Kuritani, “Prototype Tests of Induction/Synchronous Magnetic Gears“，IPEC-Himeji 2022, 17H3-5, 2022.

Academic journals and scientific publications where research using JMAG are published

• K. Ito, K. Nakamura, “Proposal and Verification of Torque Equation of IPM-Type Magnetic-Geared Motor“, IEEJ Journal of Industry Applications, Vol. 10, No. 6, pp. 612-617, 2021.
• B. Dai, K. Nakamura, Y. Suzuki, Y. Tachiya, K. Kuritani, “Comparison of Two Different Interior Permanent Magnet Type Low-speed Rotor Structures of Axial-Flux Magnetic Gear“, IEEJ Journal of Industry Applications, Vol. 10, No. 6, pp. 632-637, 2021.
• K. Ito, K. Nakamura, “A Consideration of Efficiency and Power Factor of IPM-type Magnetic-Geared Motor“, Journal of the Magnetics Society of Japan, Vol. 46, No. 1, pp. 16-21, 2022.
• B. Dai, K. Nakamura, Y. Suzuki, Y. Tachiya, K. Kuritani, “Cogging Torque Reduction of Integer Gear Ratio Axial-flux Magnetic Gear for Wind-Power Generation Application by Using Two New Types of Pole-Pieces“, IEEE Transactions on Magnetics, Vol. 58, No. 8, 8002205, 2022.