永久磁石回転型磁気車輪の磁極と特性との関係

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タイトル別名
  • Relation between Magnetic Poles and Characteristics of Revolving Permanent Magnet Type Magnet Wheel.
  • エイキュウ ジシャク カイテンガタ ジキ シャリン ノ ジキョク ト トクセイ

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抄録

The authors had proposed the revolving permanent magnet type magnetic wheel called the “magnet wheel”, which have both functions of induction repulsive type magnetic levitation and thrust. In this paper, the relation between magnetic poles and lift force or thrust characteristics is examined to grasp the performance. Five types of magnet wheels are discussed in the experimental study and four more types are used in the theoretical study with the three-dimensional numerical analysis. The following parameters are considered, they are magnetomotive force (mmf) of permanent magnet, thickness of magnet in magnetizing direction and the total volume of magnets, fundamental factor and distortion factor of the space mmf distribution of poles, pole pitch, diameter of magnet wheel, mechanical clearance, thickness and resistivity of conducting plate, etc. The result cleared the following. 1. The lift force per magnet volume is nearly proportional to the fundamental factor of space mmf distribution of pole. The low degree space harmonic mmf is effective to increase lift force. 2. The driving power per lift force is almost independent of configuration of the primary member including pole arrangement and position against the secondary conducting plate respectively, and only depends on the resistance of conducting plate. 3. In both the “partial overlap type” and “tilt type” magnet wheels, many number of poles with the sufficiently large pole pitch is useful. In the tilt type the use with a small tilt angle is desirable.

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