Punching effects on local magnetic properties near the edge of nonoriented electrical steels

• Changgeng Zhang ^[1] ; Lan Yang ^[1] ; Yongjian Li ^[1]
  1. [1] Hebei University of Technology

     Hebei University of Technology

     China

     
• Localización: Compel: International journal for computation and mathematics in electrical and electronic engineering, ISSN 0332-1649, Vol. 42, Nº Extra 1, 2023, págs. 159-168
• Idioma: inglés
• Enlaces
  • Texto completo
• Resumen

  • Purpose – The purpose of this study is to investigate the effect of punching on the local magnetic properties of the nonoriented electrical steel sheet.

    Design/methodology/approach – A microcomposite B–H sensor consisting of a pair of B probes with a spacing of 2 mm and a 1.8 1.8 mm2 H coil is designed. The region and degree of local magnetic properties degradation caused by punching can be quantitatively analyzed by flexibly moving the composite B–H sensor. The influence and physical mechanism of punching on the hysteresis loss, eddy current loss and excess loss are analyzed based on the Bertotti loss separation theory.

    Findings – This study investigates the deterioration effect of the punched nonoriented electrical steel. The permeability near the edge decreases, and the core loss as well as the microhardness increases. The region of magnetic property deterioration is dependent on the area of work hardening.

    Originality/value – The microcomposite B–H sensor can be used to measure the magnetic properties near the edge of electrical steel sheets under different processing conditions. This study provides the possibility of precise magnetic pro