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Transformer Current Ratio Measurement at a High Frequency Region
◎ミョーミンティン・戸田弘明・匹田政幸（九州工業大学）・池田久利（東京大学）・萩森英一・腰塚 正（東芝）
Short-circuit inductance of the transformers is measured by using a frequency response analyzer (FRA). These values show that short-circuit inductance decreases along with the frequency.(1) There has a phenomenon that magnetic flux cannot penetrate an iron core at a high frequency region. To study this, we made current ratio measurement of a transformer at a high frequency region up to several 10s kHz and magnetic flux versus current measurement at the high frequency region. In this paper the results of former one will be reported.