高B_r纳米晶Fe_(73)Cu_1Nb_2V_(1.5)Si_(13.5)B_9合金的铁损行为(II)中、高频损耗行为(英文)

Behavior of core loss in nanocrystalline Fe_(73)Cu_1Nb_2V_(1.5)Si_(13.5)B_9 alloy with hig h B_r(Ⅱ) Behavior of medium-and high-frequency loss

在f=3-30kHz和Bm=0.1-1.0T范围内,研究了高Br纳米晶Fe73Cu1Nb2V1.5Si13.5B9合金的中频P/f的行为。在中频范围内,研究了“磁体”数n与过剩场Hexc的关系。结果表明,用损耗统计理论中的相关方程和参数能很好地描述中频损耗的非线性行为。在f=30-100kHz和Bm=0.05-1T范围内,研究了高频P/f对f的行为。在相当宽的高频范围内,P/f对f的行为呈现准线性性,可用线性方程P/f=Peh+Keclf很好地表示。所研究的频率范围大约可分为两个范围,在这两范围内,Peh和Kecl分别具有不同值。一系列计算表明,依据方程P/f=Ph+Pcl/f+Pexc/f的损耗分离和统计理论中的相关方程不适用于正确描述高频损耗行为。

In the ranges of f=3-30kHz and Bm=0.1-1.0T, the behavior of medium-frequency P/f vs f was investigated for Fe73Cu1Nb2V1.5Si13.5B9 alloy with high Br. The d ependence of the numbern of 'Magnetic Object'on the excess field Hexc was investigated in the mediu m-frequency range. Theresults indicate that the non-linear behavior of medium-frequency loss can q uite well be described in terms of the relevant equations and parameters in the statistical theory of lo ss. In the ranges of f=30-1000kHz and Bm=0.05-1.0T,the behavior of high-frequency P/f vs f was invest igated. The behavior of P/f vs f shows quasi-linear in the considerably wide range and be expressed by thelinear equation P/f=Peh+Keclf quite well. The examined high-frequency range can roughly be divided into two ranges, inwhich Kecl and Peh possess different values. A seri es of calculations indicate that the loss decomposition in the light of P/f=Ph+Pclf+Pexc/f and the relev ant equations in the statistical theory are inapplicable to correctly describing the behavior of th e high-frequency loss.