机载高峰均比低频脉冲功率系统关键技术

相控阵雷达等高峰均比低压大电流脉冲载荷的大量装备，为机载交流电源系统高效稳定安全运行带来严峻挑战。拟提出基于三端口交直流变换器和PCB绕组平面集成矩阵磁件的机载低频脉冲供电系统，利用三端口交直流变换器实现低频脉冲功率高效解耦、并为后级直流变换器提供稳定母线电压，利用矩阵式集成磁件实现低压大电流低频脉冲负载高功率密度直流供电。研究并提出：①兼顾低频脉冲功率解耦和高效高密度电力变换的双直流母线低频脉冲负载供电系统架构；②三端口AC/DC变换器电路结构、调制策略和运行控制方法；③基于PCB绕组平面阵列化磁件的低压大电流脉冲负载直流变换系统高效高密度磁件集成与优化设计方法；④基于阵列化平面磁件的低压大电流脉冲负载多模块并联直流系统无传感器自动均流方法等。研究成果将突破高峰均功率比低频脉冲武器装备高效功率解耦与高密度电力变换技术瓶颈，为机载武器装备电源系统高效安全运行提供理论方法支撑和关键技术保障。

High peak-to-average power-ratio (PAPR), low frequency, low voltage and high current pulse power loads, e.g. phase array radar, bring new challenges to the efficient, stable and reliable operation of airborne AC power supply systems. A novel power supply system for high PAPR low frequency pulse load will be proposed based on three-port AC-DC converter and PCB-winding integrated planar matrix magnetic components. Active power decoupling of the low frequency pulse power is achieved with the three-port AC-DC converter, while a constant DC bus voltage is provided for down-stream DC/DC converters. High efficiency, high power density DC power supply for the high PAPR low voltage and high current pulse load will be achieved with the integrated planar matrix magnetic components. This project application is to study and propose: (1) a novel dual DC-bus power system architecture considering PAPR low-frequency power decoupling and high efficiency, high power density power conversion; (2) topology, modulation and control of single-phase and three-phase three-port AC/DC converters; (3) high efficiency, high power density magnetic integration and optimized design methods of PCB winding and planar matrix magnetic components for low voltage high current pulsed load; (4) sensor-less automatic current sharing method for multi-module paralleled DC power system for low voltage high current pulse load based on planar matrix magnetic components. The research results will break through the key technologies of high efficiency power decoupling and high density power conversion for high PAPR pulse power weapon equipment, and provide theoretical methods and technical supports for high-efficiency, stable and reliable operation of airborne weapon equipment power supply systems.