大尺寸纳米晶磁环的动态磁性能测量  

Measurement of dynamic characteristics of large dimension nanocrystalline core

作　　者：尚雷[1] 

机构地区：[1]中国科学技术大学国家同步辐射实验室,合肥230029

出　　处：《强激光与粒子束》2007年第2期297-300,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金资助课题(10475073)

摘　　要：在感应型速调管调制器中使用了纳米晶磁性材料制作大尺寸磁环，使用伏安向量法对材料试样的磁性能进行测量，得到频率为20．03kHz和50kHz时的动态磁化曲线、磁导率、磁场损耗等参数。使用脉冲法对成型的大尺寸磁环动态磁性能进行测量，励磁方式和工作中完全一致，在测量脉冲脉宽3．5～4．0μs，重复频率50Hz，初次线圈均为1匝，外径220mm，内径80mm，高60mm，截面积4200mm^2时，得到磁环实际能够达到的伏秒数为0．007V·s，此时所需的偏磁电流大小为8A。Nanocrystalline material was chosen in the transformer design of the klystron modulator. The voltage-current vectors method was employed to measure the sample magnetic material, and the hysteresis curve, permeability and magnetic loss were obtained at frequencies of 20.03 kHz and 50 kHz. The magnetic capability of the large dimension toroid for application was measured by the pulse magnetization method. When the outer and inner dimensions of the toroid core were 220 and 80 mm, the hight was 60 mm, and the section was 4 200 mm^2 , the pulse width was 3.5-4.0 μs, the repelition rate was 50 Hz, the primary and second coils were 1 circle, the maximum volt-second product was 0. 007 V · s and the bias current was 8 A to maintain the toroid not saturated.

关 键 词：脉冲调制器 纳米晶磁环 磁性能 伏安向量法 脉冲法 

分 类 号：TL503.5[核科学技术—核技术及应用] TN78[电子电信—电路与系统]