摘要
随着多电飞机(MEA)变频交流发电系统的发展,MEA变频交流电网中非线性电能变换装置及恒功率机电负载的增多,导致飞机电力系统出现问题,因此需要快速准确地提取电源的基波同步信号以实现对运行状态的监测并为电能质量治理装置的应用提供条件。针对上述问题,基于通用延迟信号叠加(GDSS)算子,通过加入频率自适应反馈环路设计,构造了一种具有较强谐波抑制能力及频率自适应能力的锁相环结构(AGDSS-PLL)。该方法利用GDSS算子谐波消除能力强、动态响应速度快的特点,实现对MEA变频电网电压在各种环境下基波信号的快速同步,并通过频率反馈外环增加其在复杂变频电网环境中实时追踪频率的自适应能力。最后,通过实验对所提方法与MEA变频电网常用的传统同步算法进行了对比和分析,结果表明所提AGDSS-PLL方法具有动态响应快、选频特性好、鲁棒性强的优点,能够实现在各种运行工况下对MEA变频交流电网同步信号的快速准确提取。
With the development of the variable-frequency AC power generation system of More Electric Aircraft(MEA),the increase of nonlinear power conversion devices and constant power electromechanical loads in the MEA variable-frequency AC power grid has led to problems in the aircraft power system.Therefore,it is necessary to extract the fundamental synchronous signal of the power supply quickly and accurately to monitor the operating status and provide conditions for the application of power quality control devices.To address the above issue,this paper constructs a Phase-Locked Loop(PLL)structure with strong harmonic suppression and frequency adaptation capabilities based on the General Delayed Signal Superposition(GDSS)operator and frequency adaptive feedback loop design.The GDSS operator,having strong harmonic elimination ability and rapid dynamic response speed,is utilized to achieve fast synchronization of the fundamental wave signal of the MEA variable frequency power grid voltage in various environments.The frequency feedback outer loop is employed to enhance its adaptive ability to track frequency in real-time in complex variable frequency power grid environments.Finally,the proposed method is compared with traditional synchronization algorithms commonly used in MEA variable frequency power grids through experiments.The results show that the method proposed has the advantages of fast dynamic response,good frequency selection and strong robustness,and can achieve fast and accurate extraction of synchronization signals from MEA variable frequency AC power grids under various operating conditions.
作者
卢勇
解岚清
滕国飞
李博涵
张震
徐先峰
LU Yong;XIE Lanqing;TENG Guofei;LI Bohan;ZHANG Zhen;XU Xianfeng(School of Energy and Electrical Engineering,Chang’an University,Xi’an 710018,China;AVIC Xi’an Aeronautics Computing Technology Research Institute,Xi’an 710065,China)
出处
《航空学报》
北大核心
2025年第9期254-266,共13页
Acta Aeronautica et Astronautica Sinica
基金
航空科学基金(202200190Q6002)
国家重点研发计划(2021YFB1600200)
陕西省自然科学基础研究计划(2023-JC-YB-450)
长安大学中央高校基本科研业务费专项资金(300102383203)。
关键词
多电飞机
变频电网
同步算法
通用延迟信号叠加算子
频率自适应
more electric aircraft(MEA)
variable frequency power grid
synchronous algorithm
general delay signal superposition operator
frequency adaptation
