Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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The Magnetic Properties of Electrical Steel for Rotating Machine according to the Specimen

  • Choi, Yun-Yong (Department of Automotive Engineering, Hanyang University) ;
  • Chin, Jun-Woo (Department of Automotive Engineering, Hanyang University) ;
  • Hong, Jung-Pyo (Department of Automotive Engineering, Hanyang University)
  • Received : 2016.02.22
  • Accepted : 2016.03.31
  • Published : 2016.06.30
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Abstract

This paper analyzes the magnetic property according to the machined shape of steel material with non-oriented silicon steel (50PN470/50A470), that is most commonly used in the design of electrical equipment. Toward this end, specimens were produced and divided into Bar-Specimen (Epstein Frame Tester) and Ring-Specimen (Toroidal Ring Tester). The characteristics of the electrical Silicon steel were measured using the instruments solely dedicated to measuring each specimen. The core loss of the Bar-Specimen, which is commonly used, was found to be less than that of the Ring-Specimen. This is a very important design factor in achieving the objectives of improving the product efficiency and predicting the performance of electrical equipment. It serves as a critical point of view in order to reduce the error between design value and product value. A comparative analysis was conducted regarding various characteristics (Hysteresis, B-H characteristic, Iron loss, Minor loop, Coercive force, Residual magnetic flux density, etc.) of the electrical silicon steel considered in the design of the electrical equipment according to the specimen.

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