面向高峰均比低频脉冲功率负载的脉冲电流补偿器及其控制方法  

A Pulsed Current Compensator and Control Strategy for High Peak-to-Average-Ratio Low Frequency Pulsed Load

作　　者：杨帆 李林 朱建鑫 吴红飞[2] Yang Fan;Li Lin;Zhu Jianxin;Wu Hongfei(College of Automation&College of Artificial Intelligence Nanjing University of Posts and Telecommunications,Nanjing 210023,China;College of Automation Engineering Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Nanjing Chenguang Group Co.Ltd,Nanjing 210006,China)

机构地区：[1]南京邮电大学自动化学院、人工智能学院,南京210023 [2]南京航空航天大学自动化学院,南京210016 [3]南京晨光集团有限公司,南京210006

出　　处：《电工技术学报》2022年第16期4193-4201,共9页Transactions of China Electrotechnical Society

基　　金：南京邮电大学引进人才科研启动基金(NY220144,NY220148);国家自然科学基金(51977105,U2141227);江苏省青蓝工程资助项目。

摘　　要：高峰均比低频脉冲功率负载给机载交直流电源系统的安全稳定运行带来挑战。该文提出面向高峰均比低频脉冲功率负载的脉冲电流补偿器,利用双向AC-DC变换器和小容量储能电容实现高峰均比脉冲负载电流与交流源输出电流的解耦,同时实现低频脉动电流和高频谐波电流补偿,使得交流源仅需提供平稳的负载平均功率。为了改善脉冲电流补偿器对脉冲负载电流的补偿精度,减小解耦电容电压在脉冲负载功率突变时的过冲和跌落,提出了解耦电容电压和脉冲电流基准前馈相结合的控制方法。该文详细分析脉冲电流补偿器的工作原理和特性,并通过实验验证了所提出的脉冲电流补偿器及其控制方法的有效性。The pulsed power load with high peak-to-average ratio and low-frequency brings challenges to the safe and stable operation of airborne AC-DC power systems. A pulse current compensator for high peak-to-average ratio and low frequency pulse power loads is proposed in this paper. A bi-directional AC-DC converter and a small capacity energy storage capacitor are used to decouple the high peak-to-average ratio pulse load current from the output current of the AC source,and the compensation of low frequency pulsating current and high frequency harmonic current is realized, so that the AC source only needs to provide stable average load power. In order to improve the compensation accuracy of the pulse current compensator and reduce the overshoot and dip of the decoupling capacitor voltage during the sudden change of the pulse load power, a control method combining the decoupling capacitor voltage and the pulse current reference feedforward is proposed.The operation principle and characteristics of the pulse current compensator are analyzed in detail, and the effectiveness of the proposed compensator and its control method is verified through experiments.

关 键 词：脉冲电源 脉冲电流补偿器 双向交直流变换器 前馈控制 

分 类 号：TM46[电气工程—电器]