Development of a magnetic-geared generator for a small-scale wind-turbine

2014 Fiscal Year Final Research Report

• Project/Area Number: 24360102
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Tohoku University
• Principal Investigator: NAKAMURA Kenji 東北大学, 工学(系)研究科(研究院), 准教授 (70323061)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 磁気ギア / 小型風力発電

Outline of Final Research Achievements

First, support materials and methods of pole-pieces of a flux-modulated type magnetic gear were investigated and shape and dimensions of the pole-pieces were optimized by a finite element method (FEM). As a result, torque of the magnetic gear was improved by over 40% and efficiency was reached to over 99%, which is better than conventional mechanical gears. Next, a magnetic-geared motor/generator, which is composed of a permanent magnet machine and a magnetic gear, was designed by FEM, and prototyped. As a result, the prototype machine demonstrated a good performance as designed. Next, a 1 kW small-scale wind-turbine generator is installed and a measurement system of voltage, current, and wind verbosity for a long-term was constructed.

Free Research Field

電気機器工学