永久磁石モータ鉄心中の磁気特性可視化技術

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  • Visibility Technology of Magnetic Properties in Core Martials of Permanent Magnet Motors
  • エイキュウ ジシャク モータ テッシン チュウ ノ ジキ トクセイ カシカ ギジュツ

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This paper presents iron loss distribution measurement technology and local vector magnetic distribution measurement technique applied to a permanent magnet motor. In the iron loss measurements, we used a V-H sensor in order to obtain local vector magnetic property distributions. In this paper we describe the measurement principle and provide an overview of the measurement system. Effects of stresses induced by welding and locking pins in the stator yoke on the magnetic properties are made clear and influence of the magnetic anisotropy due to rolling is identified. Furthermore we describe a measurement principle and a measurement system based on a thermographic camera. This system was also applied to obtain iron loss distributions in a stator core. From these measured results, the local iron loss characteristics in the permanent magnet motor cores are clarified.

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