发电技术2026，Vol.47Issue(3)：643-654,12.DOI:10.12096/j.2096-4528.pgt.260318
源网激励下虚拟同步直驱风电机组结构载荷响应特性分析
Analysis of Structural Load Response Characteristics of Direct-Driven Permanent Magnet Synchronous Generator Based on Virtual Synchronous Generator Under Source-Grid Excitation
摘要
Abstract
[Objectives]Against the backdrop of energy transition and large-scale grid integration of wind power,and aiming at the increasingly complex electro-mechanical coupling characteristics of wind turbines with frequency-supported control,this study conducts theoretical and simulation analyses on the load characteristics of direct-driven permanent magnet synchronous generators(D-PMSG)under virtual synchronous generator(VSG)control.[Methods]Based on multi-body dynamics and small-signal analysis theory,a linearized electro-mechanical coupling model of VSG-PMSG is constructed to characterize the dynamic relationship between loads and source-grid excitation,followed by an analysis of the response mechanisms of VSG-PMSG under impact and fatigue loads.A nonlinear electro-mechanical coupling model of VSG-PMSG with multi-time-scale interactions and multi-dynamic link effects is established.Simulation analysis of load characteristics of VSG-PMSG is conducted under typical disturbance scenarios,such as turbulent wind and grid impacts.Indicators including maximum load increase and equivalent fatigue load are selected to evaluate the effects of VSG control on turbine impact and fatigue loads.[Results]Under turbulent wind excitation,VSG control can reduce the drivetrain fatigue load and the tower bottom side-to-side fatigue load.In addition,under grid-side frequency excitation,VSG control can induce drivetrain impact load and the tower bottom side-to-side impact load.However,these are significantly smaller than the transient impacts caused by three-phase short-circuit faults.[Conclusions]VSG control alters the electrical and load characteristics of wind turbines,particularly affecting the drivetrain mode and the tower bottom side-to-side mode.The research findings provide a theoretical basis for control strategies and mechanical structure design of frequency-supported wind turbines.关键词
风电/虚拟同步发电机(VSG)/电网冲击/机电耦合/结构载荷/永磁同步发电机(PMSG)Key words
wind power/virtual synchronous generator(VSG)/grid impact/electro-mechanical coupling/structural load/permanent magnet synchronous generator(PMSG)分类
能源科技引用本文复制引用
杨超,邓宇亮,李学伟,贾勇,李辉,王砚帛..源网激励下虚拟同步直驱风电机组结构载荷响应特性分析[J].发电技术,2026,47(3):643-654,12.基金项目
国家自然科学基金项目(52177129) （52177129）
重庆市基础科学与前沿技术研究专项基金(cstc2020jcyj-msxmX0349) （cstc2020jcyj-msxmX0349）
重庆市教委科学技术研究项目(KJQN202101118).Project Supported by National Natural Science Foundation of China(52177129) （KJQN202101118）
Chongqing Basic Research and Frontier Exploration General Project(cstc2020jcyj-msxmX0349) （cstc2020jcyj-msxmX0349）
Science and Technology Research Program of Chongqing Education Commission(KJQN202101118). （KJQN202101118）
