Resonance Characterization and Frequency-divided Compensation Strategy for Heterogeneous Inverters-paralleled System

作     者：Hongbin Lin Pingjuan Ge Hailiang Xu Yuhan Duan 

作者机构：the College of New EnergyChina University of Petroleum(East China)Qingdao 266580China the Key Laboratory of Control of Power Transmission and ConversionMinistry of EducationShanghai Jiao Tong UniversityShanghai 200240China 

出 版 物：《Journal of Modern Power Systems and Clean Energy》 (现代电力系统与清洁能源学报(英文))

年 卷 期：2025年第13卷第1期

页      面：42-54页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China(No.52077222) the Shandong Provincial Natural Science Foundation(No.ZR2023QE156) 

主　　题：Grid-following(GFL)inverter grid-forming(GFM)inverter heterogeneous inverters-paralleled system(HIPS) frequency-divided compensation strategy 

摘      要：Currently,the dominant trend in new energy power supply systems is the heterogeneous inverters-paralleled system(HIPS),which is a combination of grid-following(GFL)and grid-forming(GFM)*** dynamic characteristics of different inverters in HIPS and the differences between GFL and GFM inverters undoubtedly increase the difficulty of the stability analysis and coordinated *** paper establishes an interactive admittance matrix model of HIPS,fully considers the interactive effects among different inverters,and explores the multi-dimensional resonance characteristics of HIPS by utilizing the modal analysis *** achieve the coordinated control and oscillation suppression among different inverters,a frequency-divided compensation strategy is proposed,which divides the operation modes of HIPS into three categories,i.e.,GFM,GFL,and hybrid ***,the frequency division boundary is determined based on the resonance characteristics of GFL and GFM inverters,with the operation modes of HIPS being dynamically adjusted according to the harmonic power ***,the simulation and experimental results demonstrate that the HIPS can flexibly adjust the operation modes to adapt to the complex conditions after adopting the frequency-divided compensation strategy and suppressing the oscillation frequency ratio to less than 2%,ensuring the safe and reliable operation of HIPS.