发电技术2026，Vol.47Issue(1)：195-203,9.DOI:10.12096/j.2096-4528.pgt.260118
交直流微电网互联变换器功率协调自抗扰控制策略
Active Disturbance Rejection Control Strategy for Power Coordination of Interlinking Converters in AC/DC Microgrids
摘要
Abstract
[Objectives]To ensure stable and smooth energy flow between AC and DC subnets and address the degradation of interlinking converter control performance caused by uncertain switching of high-power AC or DC loads,a power coordination control strategy for interlinking converters based on a second-order linear active disturbance rejection controller is proposed.[Methods]Based on the transmission power of the converters,a current observer is utilized to estimate the disturbance caused by high-power load switching in the AC or DC subnet.Then,the disturbance is compensated in the feedback channel of the control loop to ensure that the frequency of the AC subnet and the bus voltage of the DC subnet can always remain within permissible ranges during high-power load switching.Finally,an electromagnetic transient simulation model of an isolated AC-DC hybrid microgrid is established based on MATLAB/Simulink to verify the effectiveness of the proposed ADRC-based power coordination control strategy.[Results]When a large power load is switched on in an independent microgrid,the proposed control strategy can accurately regulate the active power flowing through the interconnected converter in real time,ensuring that the AC subnet frequency and DC bus voltage are within the stable operating range,so as to solve the problem of using traditional PI controllers.The problem of system instability caused by lagging tracking large load switching.[Conslusions]A comparison with traditional control strategies shows that the proposed control strategy improves the reliability and stability of the microgrid.关键词
交直流微电网/互联变换器/自抗扰控制(ADRC)/下垂控制/负荷投切/控制策略Key words
AC/DC microgrid/interlinking converter/active disturbance rejection control(ADRC)/droop control/load switching/control strategy分类
能源科技引用本文复制引用
刘素梅,徐文成,孙曦冉,余非,胡春鹤..交直流微电网互联变换器功率协调自抗扰控制策略[J].发电技术,2026,47(1):195-203,9.基金项目
国家自然科学基金青年基金项目(52107069).Project Supported by Young Scientists Fund of the National Natural Science Foundation of China(52107069). （52107069）
