非晶合金配电变压器铁心内部磁密分布  

Investigation on flux distribution of amorphous wound core for distribution transformers

作　　者：肖晋桦 陈文智 张占全 XIAO Jin-hua;CHEN Wen-zhi;ZHANG Zhan-quan(Central Iron & Steel Research Institute, Beijing 100081, China;AT&M-NARI Amorphous Technology Co, Ltd, Beijing 100081, China)

机构地区：[1]钢铁研究总院,北京100081 [2]安泰南瑞非晶科技有限责任公司,北京100081

出　　处：《磁性材料及器件》2019年第4期26-29,共4页Journal of Magnetic Materials and Devices

基　　金：国家自然科学基金资助项目(51774098)

摘　　要：采用铁基非晶合金带材制作配电变压器用卷铁心,分析其内部不同位置的磁密分布。在低励磁磁密条件下,铁心内部实际磁密集中于内侧,由内到外磁密逐渐降低,当励磁磁密为0.5T时,内外侧实际磁密差可达0.37T。随着励磁磁密的增高,铁心内外侧实际磁密差逐渐减小,实际磁密分布趋于平缓。铁心内部存在明显的三次谐波,内外侧三次谐波含量相比于中间部位更高。随着励磁磁密的增高,三次谐波含量也随之增大,在励磁磁密为1.5T时,最外侧的三次谐波含量达到了10%。Amorphous wound core for distribution transformers was prepared using iron-based amorphous alloy strip, and magnetic flux density in different location inside the core investigated. At low exciting flux, the actual flux is higher in inner part of the core and decreases gradually outward. The flux discrepancy between the outermost and the innermost reaches 0.37 T at the exciting flux of 0.5 T, and the discrepancy decreases as the exciting flux increases. There is remarkable third harmonics in magnetic flux at different parts of the core. The content of the third harmonics in the inner and outer side is greater than central part of the core. The content of the third harmonics increases as the exciting flux increases. For the exciting flux of 1.5 T, the content of the third harmonics in the outermost reaches about 10 %.

关 键 词：非晶合金 配电变压器 卷铁心 磁密分布 三次谐波 

分 类 号：TM4[电气工程—电器]