电力系统自动化2013，Vol.37Issue(11)：58-64,7.DOI:10.7500/AEPS201209030
基于平均化理论的PWM变流器电磁暂态快速仿真方法(一)PWM变流器分段平均模型的建立
Fast Electromagnetic Transient Simulation Method for PWM Converters Based on Averaging Theory Part One Establishment of Piecewise Averaged Model for PWM Converters
摘要
Abstract
To improve computational efficiency of the electromagnetic transient simulations of distributed generation systems and microgrids,a piecewise averaged model of pulse width modulation (PWM) converters based on the averaging theory of nonlinear dynamic systems is proposed.The local averaged state equation for PWM converters in each switching period is derived.It converts the switching functions into piecewise constant functions.Then large integral time step can be chosen to speed up the simulations.Error estimation theorem for the proposed model is provided and the approximate expression of state variable ripple is given as well.The proposed model is verified by simulating a three-phase PWM AC-DC converter.关键词
变流器/平均模型/电磁暂态/快速仿真/分布式电源Key words
converter/ averaged model/ electromagnetic transient / fast simulation/ distributed generator引用本文复制引用
许寅,陈颖,陈来军,任正某..基于平均化理论的PWM变流器电磁暂态快速仿真方法(一)PWM变流器分段平均模型的建立[J].电力系统自动化,2013,37(11):58-64,7.基金项目
国家自然科学基金资助项目(51277104,51207076) （51277104,51207076）
清华大学自主科研计划资助项目(20121087926).This work is supported by National Natural Science Foundation of China (No.51277104,No.51207076). （20121087926）
