相控阵雷达阵面供电系统的功率波动对雷达系统具有重要影响。通过分析供电系统架构和负载特性,建立了发射单元的等效电路和数学模型。根据平均功率供电模式的特点,采用状态空间分段的方法,推导了供电系统的电压和电流变化规律,并推导了脉冲负载条件下供电系统的输出功率波动函数。基于功率波动函数和电流特性,提出了供电系统输出功率在空载与满载之间波动的充要条件,并提出了功率波动比指标,衡量功率波动程度。最后通过实例工程计算和仿真分析,验证了本文的主要结论。提出的功率波动机理分析方法,为大型相控阵雷达电源系统设计奠定了理论基础,具有良好的工程应用价值。

The power fluctuation of phased array radar power system has an important impact on the radar system. The equivalent circuit and the mathematic model of the transmitting units are built by analyzing the architecture and load characteristic of the power system. Based on the property of the average power supply mode, the voltage and current variation rules of the power supply system are deduced by the state-space segment method. At the same time, the output power fluctuation function of the power system under the pulse load condition is obtained. Based on the power fluctuation function and current property, the necessary and sufficient condition of the power fluctuation between the zero and full load is proposed. The index of power fluctuation ratio is given to measure the degree of the power fluctuation. Finally, the main results are verified by the engineering computation and the simulations. The proposed analyzing method of the power fluctuation mechanism lays a theoretical foundation for the design of large-scale phase array radar power system, and has great engineering application value.

TN958.92

中国电子科技集团公司资助项目(2020031812)