一种电力电子变换器固有频率仿真提取方法

A simulation extraction method for natural frequency of power electronic converters

为了简化电力电子变换器固有频率的仿真过程,减少建模工作量,并提高其固有频率提取的精度,本文首先针对电力电子变换器的仿真模型建立过程,提出了一种新的模型简化方法,并对仿真后得到的固有频率,提出了一种根据模态参与因子进行固有频率提取的方法。最后对比了固有频率的仿真和实验结果,两者的误差能控制在10%以内,验证了新方法的有效性。

In order to simplify the simulation process of computing the natural frequencies of the power electronic converters,reduce the modeling workload,and improve the accuracy of its natural frequency selection,this paper firstly proposes a new model simplification method for the simulation model establishment process of the power electronic converter.For the natural frequencies obtained after simulation,a method for extracting the natural frequencies according to the modal participation factor is proposed.Finally,the simulation and experimental results of the natural frequency are compared,and the error of the two can be controlled within 10%,which verifies the effectiveness of the new method.