摘要
针对空间磁场环境模拟线圈磁感应强度0～20 Gs连续可调,磁场稳定度优于1%的要求,采用前级电压源与后级电流源串联的主电路拓扑结构,结合电压双闭环控制和电流闭环负反馈控制的方法,实现了稳定的电流输出,减小了功率金属-氧化物半导体场效应晶体管（MOSFET）的功耗,提高了恒流源的效率.测试结果表明：恒流源输出电流0～10 A连续可调,霍姆赫兹线圈中心磁感应强度能达到20 Gs的设计要求,电流稳定度优于0.1%,磁场稳定度优于1%.
To reach the requirements that the space environment simulation coil ＇s magnetic induction intensity can continuously adjust from 0 to 20 Gs,and the magnetic field stability can be better than 1%,main circuit topology structure using a voltage source in series with a current source,combined with the voltage double closed loop control and the current closed loop negative feedback control methods,achieved a stable current output,reduced the power consumption of the metal-oxide-semiconductor field-effect transistor（ MOSFET）,and improved the efficiency of the constant current source. The test results show that the constant current source output current ranges from 0 to 10 A,Helmholtz coil＇s center magnetic induction intensity can reach the design requirements of 20 Gs,the current stability is better than 0. 1%,and the magnetic field stability is better than 1%.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2015年第6期1102-1107,共6页
Journal of Beijing University of Aeronautics and Astronautics
基金
北京航空航天大学基本科研业务费(YWF-14-JXXY-012)
