有缆海底观测系统浪涌电流抑制电路设计  

Design of Surge Current Suppression Circuit for Cabled Seafloor Observation System

作　　者：李超[1,2] 顾吉星 霍建玲 刘松堂 LI Chao;GU Jixing;HUO Jianling;LIU Songtang(National Ocean Technology Center,Tianjin 300112,China;Key Laboratory of Ocean Observation Technology,Ministry of Natural Resources,Tianjin 300112,China;Yantai Marine Environmental Monitoring Center Station of State Oceanic Administration,Yantai 264010,China)

机构地区：[1]国家海洋技术中心,天津300112 [2]自然资源部海洋观测技术重点实验室,天津300112 [3]国家海洋局烟台海洋环境监测中心站,山东烟台264010

出　　处：《海洋技术学报》2022年第2期28-34,共7页Journal of Ocean Technology

基　　金：国家重点研发计划资助项目(2018YFC1407506)。

摘　　要：本文分析了有缆海底观测系统中浪涌电流形成的原因,介绍了目前通常采用的浪涌电流抑制电路。针对传统电路的不足,本文设计了一种基于MOSFET场效应管的浪涌电流抑制电路,原理是利用电容改变MOSFET场效应管的输出特性曲线,延长其工作在非饱和区的时间,通过栅极电压控制漏极电流逐渐增大,从而达到控制浪涌电流的目的。本文阐述了浪涌电流抑制电路核心和外围电路的设计方案,以及元器件参数的计算方法,电路设计完成后在项目中得到应用并加以验证。实验结果表明:电路设计达到了预期效果,有效抑制了浪涌电流,提高了供电系统的可靠性。The paper analyzes the causes of surge current in the cabled seafloor observation system,and introduces the widely used surge current suppression methods.With regard to the shortcoming of these traditional methods,a surge current suppression circuit based on MOSFET is designed.The principle is to use the capacitance to change the output characteristic curve of MOSFET to extend its working time in the unsaturated region,and control the drain current to increase gradually through the gate voltage,so as to control the surge current.The design scheme of the core and peripheral of the surge current suppression circuit and the calculation method of the component parameters are described in detail.After the design is completed,it is applied and verified in the project.The experimental results show that the expected effect is achieved,the surge current is effectively suppressed,and the stability of power supply system is improved.

关 键 词：海底观测 浪涌电流抑制 MOSFET 电路设计 

分 类 号：P715.5[天文地球—海洋科学]