Resonant Single Phase Motor Utilizing Polarization Current by Electric Field

2014 Fiscal Year Final Research Report

• Project/Area Number: 24656183
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Yokohama National University
• Principal Investigator: FUJIMOTO Yasutaka 横浜国立大学, 工学(系)研究科(研究院), 教授 (60313475)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 分極電流 / モータ / ローレンツ力 / 誘電体 / 共振

Outline of Final Research Achievements

In most conventional motors, secondary current is supplied by magnetization or electric field generated by electric potential or electromagnetic induction. However, there is a possibility that polarization current can be utilized as secondary current. We propose a new motor that utilizes polarization current generated by varying electric field between two conducting plates of a capacitor. Simultaneously a series coil generates varying magnetic field. As a result a dielectric object placed at the secondary side experiences one-way Lorentz force perpendicular to both polarization current and magnetic field. In addition, the capacitor and the coil constitute a resonant circuit which brings large current at the resonance frequency. In this study, we measured frequency response of the proposed motor in high frequency domain and derived a precise equivalent circuit explaining the measured impedance well. We observed average force of 2.8mgf for a dielectric object through experiments.

Free Research Field

電気機器学