三相高频AC/DC/DC变换器的宽频等效建模方法  

Broadband Equivalent Modeling Method of Three-phase High Frequency AC/DC/DC Converter

作　　者：张扬 高添 林卫星 ZHANG Yang;GAO Tian;LIN Weixing(School of Mechanical and Electric Engineering,Nanchang Institute of Technology,Nanchang 330099,Jiangxi,China;TBEA China Xinjiang Sunoasis Co.,Ltd.,Urumqi 830011,Xinjiang,China)

机构地区：[1]南昌工程学院机械与电气工程学院,江西南昌330099 [2]特变电工新疆新能源股份有限公司,新疆乌鲁木齐830011

出　　处：《电气传动》2022年第8期34-40,共7页Electric Drive

基　　金：国家自然科学基金(51867019);江西省教育厅科技项目(GJJ180961)。

摘　　要：光伏逆变器、充电桩、储能变流器和风电变流器等常见电力电子设备都属于三相高频AC/DC/DC变换器,其应用范围非常广泛,涵盖了工业和民用领域。由于三相高频变换器快速的开断能力,其产生的高频谐波分量不可忽略。传统的开关模型解析困难、平均模型忽略了高频分量,二者在分析高频谐波上存在不足。基于此,提出一种三相高频AC/DC/DC变换器的宽频等效建模方法,与传统建模方法相比,所提模型基于归一化的方法化简模型形式,采用复数卷积傅里叶级数同时分析低频信号和高频信号,在Matlab/Simulink中搭建仿真模型,通过模型在不同工作状态仿真数据与试验数据的对比,验证了所提方法的正确性。Photovoltaic inverter,charging pile,energy storage converter,wind power converter and other common power electronic equipment are three-phase high frequency AC/DC/DC converter,which is widely used in industrial and civil fields. Due to the fast switching capability of three-phase high frequency converter,its high frequency harmonic components can’ t be ignored. The traditional switch model is difficult to analyze,and the average model ignores the high frequency components,which have shortcomings in analyzing high frequency harmonics.Based on this,a broadband equivalent modeling method of three-phase high frequency AC/DC/DC converter was proposed. Compared with the traditional modeling methods,the proposed model is based on the normalization method to simplify the model form,use complex convolution Fourier series to analyze low frequency signal and high frequency signal simultaneously. The simulation model was built in Matlab/Simulink,and the correctness of the proposed method was verified by comparing the simulation data and experimental data of the model in different working states.

关 键 词：三相变换器 高频谐波 等效建模 归一化 傅里叶级数 

分 类 号：TM28[一般工业技术—材料科学与工程]