摘要
水声探测设备电磁兼容(EMI)滤波器用于抑制功率电源干扰,降低系统电噪声,提高系统探测性能,与功率放大器的工作稳定性密切相关。文中通过在EMI滤波器输出端并接储能电容,以解决发射稳定性问题,优化探测系统电磁环境。建立EMI滤波器、功率放大电路及其负载模型,分析储能电容值对功率放大电路的影响,提出储能电容参数选取方法。搭建了原理电路,对所建模型及电容选取方法进行实验验证,以证明模型及电容选取方法的正确性。实验结果表明,选择水下探测设备EMI滤波器储能电容时,使用文章所建模型能够计算出满足功放要求的最小储能电容值,在成本、体积和计算最小容值允许的情况下,选择容值较大的储能电容可提高功放供电品质。
The electromagnetic interference(EMI)filter of underwater acoustic detection equipment is used to suppress the power supply interference,reduce the electrical noise of the system,and improve the detection performance of the system.However,it affects the stability of the power amplifier.This study proposes to solve the problem of emission stability and optimize the electromagnetic environment of the detection system by connecting the energy storage capacitor at the output terminal of the EMI filter in parallel.Furthermore,the models of the EMI filter and power amplifier circuit and load were established.Subsequently,the influence of energy storage capacitor value on power amplifier circuit was analyzed,and a method for selecting energy storage capacitor parameters was proposed.The principal circuit was built,and the accuracy of the model and capacitor selection method was verified using experiments.The experimental results showed that when choosing the energy storage capacitor of the EMI filter of underwater acoustic detection equipment,the proposed model can be used to calculate a minimum energy storage capacitor value that meets the requirements of the power amplifier.The power supply quality of the power amplifier improves when a larger energy storage capacitor is chosen at the allowed cost,volume,and calculated minimum capacitance value.
作者
张耀友
陈亚林
张奎
程学峰
王旭
ZHANG Yao-you;CHEN Ya-lin;ZHANG Kui;CHENG Xue-feng;WANG Xu(The 705 Research Institute,China State Shipbuilding Corporation Limited,Xi’an 710077,China)
出处
《水下无人系统学报》
2022年第1期109-114,共6页
Journal of Unmanned Undersea Systems
关键词
水声探测设备
功率放大器
EMI滤波器
储能电容
underwater acoustic detection equipment
power amplifier
electromagnetic interference filter
energy storage capacitor
