Precise AC magnetic measurement under sinusoidal magnetic flux by using digital feedback of harmonic compensation |
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| Authors: | Yanbin Zhang Yi Long Qingchang Qu Rongchang Ye Yongqin Chang |
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| Affiliation: | 1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China;2. Electromagnetic division, National Institute of Metrology, Beijing, 100013, China |
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| Abstract: | This paper presents an important improvement for precise AC magnetic measurement under sinusoidal magnetic flux by using the digital feedback of harmonic compensation. Core loss-testing can be simply carried out with the sinusoidal magnetic flux even at a magnetic induction up to 1.87 T. The principle, circuit diagram, experimental results and its analysis are reported. Also it is found that the hysteresis loss per cycle P is smaller after correcting the magnetic flux waveform than before. |
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| Keywords: | Magnetic measurement Magnetic flux of sinusoidal waveform Feedback of harmonic |
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