太阳辐照度光谱仪光谱定标用汞灯电源设计
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摘要
为了满足FY-3太阳辐照度光谱仪的星上光谱定标要求,针对汞灯高起辉电压、低工作电压的特点设计了一种汞灯电源。采用单端反激拓扑结构及四级倍压整流电路实现了汞灯高压起辉,通过闭环负反馈实现了汞灯工作电流的恒流控制;无需外加微控制器,完成了汞灯高起辉电压和低工作电压的自动切换,并且在保证电源稳定性的同时,解决了现有汞灯电源适用性较差、低温下无法可靠起辉的问题。实验结果表明:设计的汞灯电源电流精度为0.000 21、电流调整率为0.001 8、稳流系数为0.009,在低温下也可稳定驱动汞灯工作,完全满足载荷的任务需求。
In order to satisfy the requirement of solar irradiance spectrometer spectral calibration on the satellite, a mercury-lamp source is designed based on its characteristics which can be described as high voltage to glow and low voltage for work. The single-ended fly-back topological structure and four level dual voltage rectifier are used to provide the high glowing voltage. And the degenerative feedback is designed to current constant. The glowing voltage and working voltage can be switched automatically without the microcontroller.Both the usability and the reliability in low temperature of the source are improved. The experiments show that the current precision of the mercury-lamp source designed is 0.000 21, the current adjustment rate is 0.001 8, the current stabilization coefficient is 0.009. The mercury-lamp source can work reliably in low temperature and satisfy the system requirement of the load.
In order to satisfy the requirement of solar irradiance spectrometer spectral calibration on the satellite, a mercury-lamp source is designed based on its characteristics which can be described as high voltage to glow and low voltage for work. The single-ended fly-back topological structure and four level dual voltage rectifier are used to provide the high glowing voltage. And the degenerative feedback is designed to current constant. The glowing voltage and working voltage can be switched automatically without the microcontroller.Both the usability and the reliability in low temperature of the source are improved. The experiments show that the current precision of the mercury-lamp source designed is 0.000 21, the current adjustment rate is 0.001 8, the current stabilization coefficient is 0.009. The mercury-lamp source can work reliably in low temperature and satisfy the system requirement of the load.
引文
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[2]张浩,方伟,叶新,等.宽光谱棱镜型太阳光谱仪设计[J].光学学报,2013,33(2):1-9.
[3]曹海霞,吴娜,冯树龙,等.单色仪与成像光谱仪的交互光谱定标[J].光学精密工程,2014,22(10):2585-2591.
[4]安仁军,韩秋漪,张善端.汞蒸气放电紫外光源的现状和前景综述[J].中国照明电器,2015(11):9-14.
[5]MIZUNAMI T,FUJIYOSHI T.Fabrication of long-period fiber-gratings by low-pressure mercury lamp-effect of grating length[C].Tokyo:18th IEEE Microoptics Conference(MOC),2013.
[6]王加朋,王淑荣,徐领娣,等.紫外辐射计的波长定标及不确定度分析[J].光电工程,2008,35(6):42-47.
[7]陈济,王英鉴,张仲谋,等.星上低压汞灯恒流电源[C].第十七届全国测控计量仪器仪表学术年会论文集,2007.
[8]孙健,陈跃宁,徐征,等.基于单端反激式LED驱动电源的设计[J].电源设计,2016,40(2):413-415.
[9]杨荣峰,刘英,于泳,等.高输入电压单端反激式开关电源设计关键问题[J].电子技术应用,2011,37(5):75-81.
[10]冷利军,蒲世豪,但敏,等.中频倍压整流在小型直流高压电源中的应用[J].真空,2016,53(1):62-65.