Investigation of power loss in non-oriented electrical steels under pulse width modulated voltage excitation

Tutkun N., Moses A.

Journal of Magnetism and Magnetic Materials, cilt.277, sa.3, ss.359-362, 2004 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 277 Sayı: 3
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1016/j.jmmm.2003.11.016
  • Dergi Adı: Journal of Magnetism and Magnetic Materials
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.359-362
  • Anahtar Kelimeler: Electrical steels, Magnetic losses, Magnetic measurements, PWM excitation
  • İstanbul Ticaret Üniversitesi Adresli: Hayır

Özet

Power loss of various electrical steels energised by PWM voltage excitation was measured and compared with that under sinusoidal excitation by use of an Epstein tester. The results indicate that total power loss under PWM excitation is the larger. During measurements flux densities varied from 0.5 to 1.7 T and maximum and minimum loss increases occurred at 1.7 and 0.5 T, respectively. The PWM parameters such as the switching frequency and modulation depth were maintained constant at 1.5 kHz and 0.7, respectively. It is assumed that the mechanism of loss increase can be attributed to frequency dependent losses as well as to the flux waveform. © 2003 Elsevier B.V. All rights reserved.