中圖分類號： TM91；TG115 文獻(xiàn)標(biāo)識碼： A DOI：10.16157/j.issn.0258-7998.200508 中文引用格式： 張廷堯，王曉娜，侯德鑫，等. 便攜式脈沖渦流熱成像電源系統(tǒng)設(shè)計[J].電子技術(shù)應(yīng)用，2020，46(10)：118-122. 英文引用格式： Zhang Tingyao，Wang Xiaona，Hou Dexin，et al. Design of portable power supply system for pulsed eddy current thermography[J]. Application of Electronic Technique，2020，46(10)：118-122.
Design of portable power supply system for pulsed eddy current thermography
Zhang Tingyao，Wang Xiaona，Hou Dexin，Ye Shuliang
Institute of Industry and Trade Measurement Technique，China Jiliang University，Hangzhou 310018，China
Abstract： In order to realize the application of pulsed eddy current thermography technology in field detection, a portable power system scheme based on "lithium battery+supercapacitor" composite power supply technology was designed to solve the problems of low power and low voltage in the separate power supply of lithium battery.The power conversion is realized by charging and discharging of supercapacitors, and the voltage conversion is realized by using DC/DC converter to realize efficient utilization of lithium batteries.Firstly, the demand of pulsed eddy current thermal imaging power supply is analyzed, the topological structure of the power supply is introduced and the portable power supply system is built. Then, the switching control strategy of the system is analyzed in detail. Finally, its performance is tested and the practicability of the portable power supply is verified by crack detection experiment. The results show that the rated power of the portable power supply system is up to 1.5 kW and the weight is within 10 kg, which meets the initial demand of the portable power supply for pulsed eddy current thermography.
Key words : pulsed eddy current thermography；protable；lithium batteries；super-capacitor；DC/DC converter
