SST를 이용한 전기강판의 2차원 자기특성 측정을 위한 새로운 자속밀도 파형 제어법

A New Algorithm of B-waveform Control for the Measurement of Two-dimensional Magnetic Properties of Electrical Steel Sheets using Single Sheet Tester

  • 음영환 (충북대 전기공학과) ;
  • 윤희성 (충북대 전기공학과) ;
  • 고창섭 (충북대 전기전자컴퓨터 공학부)
  • 발행 : 2008.07.01

초록

The measurement of two-dimensional magnetic properties of electrical steel sheet using single sheet tester (SST) requires to control the B-waveform as sinusoidal. The SST electric circuit, in general, has inductance, and this makes the phase lag in electric current. For this reason, the induced voltages of H- or B-coil may have phase difference from the exciting voltage. In this paper, a new algorithm is developed to compensate the phase difference and makes the B-waveform control efficient. The developed algorithm experimentally calculates the phase difference based on the measured waveform of the induced voltage for the magnetic field intensity along transverse direction. By using the proposed algorithm, the two-dimensional magnetic properties of grain-orientated electrical steel sheet (30PG110) is measured up to 2T. By comparing the measured B- and H-waveforms, the effectiveness of the proposed algorithm is proven.

키워드

참고문헌

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