摘要
作为风力发电系统中的重要接口部件,功率变换器的精确建模是风电系统建模的重要基础。功率变换器在工作时连续和离散的动态特性相互作用,给建模带来巨大挑战。针对功率变换器的不连续性和混杂特性,采用非线性阻性元件对开关器件等效,基于键合图理论构建功率变换器模型,实现其统一建模。借助Matlab仿真平台,采用Simulink子系统模块构建键合图仿真模型,仿真结果验证了模型的正确性,说明键合图作为一种工程系统的建模方法在混杂系统的建模上具有独特的优越性。
As an important interface component in wind power generation system,accurate modeling of power converter is an important foundation of wind power system modeling.The continuous and discrete characteristics of power converter interact during operation,which brings great challenges to its modeling.According to the discontinuity and hybrid characteristics of power converter,the nonlinear resistive elements are equivalent to switching devices,and the power converter model was constructed based on bond graph theory to realize its unified modeling.With the help of Matlab,the bond graph simulation model was constructed by using Simulink subsystem module.The simulation results verify the correctness of the model,indicating that the bond graph,as a modeling method of engineering system,has unique advantages in modeling hybrid systems.
作者
戴吉佳
沈艳霞
DAI Ji-jia;SHEN Yan-xia(Engineering Research Center of Internet of Things Technology Applications of Ministry of Education,Jiangnan University,Wuxi Jiangsu 214122,China)
出处
《计算机仿真》
北大核心
2023年第3期103-109,共7页
Computer Simulation
基金
国家自然科学基金(61573167、61572237)。
关键词
功率变换器
混杂系统建模
键合图
开关器件等效
计算机仿真
Power converter
Hybrid system modeling
Bond graph
Switching devices equivalence
Computer simulation
