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一种基于SPWM的交-直-交型变频器系统简化模型
引用本文:肖运启,XU Da-ping,吕跃刚.一种基于SPWM的交-直-交型变频器系统简化模型[J].系统仿真学报,2008,20(8):2185-2189.
作者姓名:肖运启  XU Da-ping  吕跃刚
作者单位:华北电力大学,控制科学与工程学院,北京,102206
基金项目:国家自然科学基金,教育部科学技术研究项目
摘    要:针对应用Matlab/Simulink/PSB对交-直-交变频器建模仿真存在运算量大,耗时长的问题,提出了一种适合于控制系统分析设计的简化高效的基于SPWM变频器系统模型.首先详细推导了基于通用模块的变频器开关函数模型;然后提出一种代替SPWM脉宽调制环节的等效方法,组成了变频器系统的简化模型,并分析了基于简化模型设计控制系统的有效性;最后通过仿真进行验证.结果表明简化模型保持了原模型的外部特性而实际用时显著缩短,适合于控制技术研究的仿真应用.

关 键 词:交-直-交型变频器  整流器  逆变器  正弦脉宽调制  系统建模

Simplified Model for AC-DC-AC Converter System Based on SPWM
XIAO Yun-qi,XU Da-ping,LV Yue-gang.Simplified Model for AC-DC-AC Converter System Based on SPWM[J].Journal of System Simulation,2008,20(8):2185-2189.
Authors:XIAO Yun-qi  XU Da-ping  LV Yue-gang
Abstract:As AC-DC-AC converter model built by Matlab/Simulink/PSB library blocks needs lots of time for calculation during simulating,a simplified and efficient AC-DC-AC converter model using SPWM with general blocks was proposed for control system design. The converter model based on switching function was obtained,and an equal method substituted for SPWM was proposed. As the result,the total simplified model was established. The correctness of control system design using this simplified model was analyzed and verified by simulations. Results show that the simplified model possesses the same outside characteristics with the original one while the simulating time is reduced remarkable,which is especially suit for control technology research.
Keywords:AC-DC-AC converter  rectifier  inverter  SPWM  system modeling
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