弱电网下计及直流母线和镜像频率耦合扰动的三相LCL型并网逆变器序导纳建模及稳定性分析

TM712%TM464; 为解决新能源并网系统的交互失稳问题,首先运用双谐波线性化方法,综合考虑直流母线与镜像频率耦合扰动,建立三相LCL型并网逆变器的序导纳模型;进一步将传统的矩阵序导纳模型简化为单输入单输出序导纳模型,分别分析锁相环、直流电压外环和电流内环控制器的带宽对并网逆变器导纳特性的影响规律;最后基于MATLAB/Simulink仿真平台,验证了非线性时域系统中所建序导纳模型的准确性,并通过奈奎斯特稳定判据证明了所提模型可有效地提高弱电网下并网交互系统稳定性....

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Published in电力自动化设备 Vol. 40; no. 9; pp. 190 - 196
Main Authors 朱益良, 蒲俊楷, 葛兴来, 闫培雷, 孙伟鑫, 李婷婷, 刘川
Format Journal Article
LanguageChinese
Published 西南交通大学 磁浮技术与磁浮列车教育部重点实验室,四川 成都 610031%成都运达科技股份有限公司,四川 成都 610097 10.09.2020
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ISSN1006-6047
DOI10.16081/j.epae.202009027

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Abstract TM712%TM464; 为解决新能源并网系统的交互失稳问题,首先运用双谐波线性化方法,综合考虑直流母线与镜像频率耦合扰动,建立三相LCL型并网逆变器的序导纳模型;进一步将传统的矩阵序导纳模型简化为单输入单输出序导纳模型,分别分析锁相环、直流电压外环和电流内环控制器的带宽对并网逆变器导纳特性的影响规律;最后基于MATLAB/Simulink仿真平台,验证了非线性时域系统中所建序导纳模型的准确性,并通过奈奎斯特稳定判据证明了所提模型可有效地提高弱电网下并网交互系统稳定性.
AbstractList TM712%TM464; 为解决新能源并网系统的交互失稳问题,首先运用双谐波线性化方法,综合考虑直流母线与镜像频率耦合扰动,建立三相LCL型并网逆变器的序导纳模型;进一步将传统的矩阵序导纳模型简化为单输入单输出序导纳模型,分别分析锁相环、直流电压外环和电流内环控制器的带宽对并网逆变器导纳特性的影响规律;最后基于MATLAB/Simulink仿真平台,验证了非线性时域系统中所建序导纳模型的准确性,并通过奈奎斯特稳定判据证明了所提模型可有效地提高弱电网下并网交互系统稳定性.
Author 李婷婷
蒲俊楷
朱益良
孙伟鑫
葛兴来
闫培雷
刘川
AuthorAffiliation 西南交通大学 磁浮技术与磁浮列车教育部重点实验室,四川 成都 610031%成都运达科技股份有限公司,四川 成都 610097
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Author_FL LIU Chuan
ZHU Yiliang
PU Junkai
LI Tingting
SUN Weixin
YAN Peilei
GE Xinglai
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弱电网
双谐波线性化
稳定性分析
并网逆变器
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Title 弱电网下计及直流母线和镜像频率耦合扰动的三相LCL型并网逆变器序导纳建模及稳定性分析
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