|本期目录/Table of Contents|

[1]王喜莲,程迪,王顺. 基于输出阻抗建模的并网系统低次谐波预测模型[J].电机与控制学报,2019,23(06):18-26.[doi:10.15938/j.emc.2019.06.003]
 WANG Xi-lian,CHENG Di,WANG Shun. Low harmonics prediction model of grid-connected system based on output impedance modeling[J].,2019,23(06):18-26.[doi:10.15938/j.emc.2019.06.003]
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 基于输出阻抗建模的并网系统低次谐波预测模型
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
23
期数:
2019年06
页码:
18-26
栏目:
出版日期:
2019-06-15

文章信息/Info

Title:
 Low harmonics prediction model of grid-connected system based on output impedance modeling
作者:
 王喜莲1 程迪1 王顺2
 ( 1. 北京交通大学电气工程学院,北京100044; 2. 中交机电工程局有限公司,北京100088)
Author(s):
 WANG Xi-lian1 CHENG Di1 WANG Shun2
 ( 1. School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China;2. CCCC Mechanical & Electrical Engineering Co. ,Ltd. ,Beijing 100088,China)
关键词:
 并网逆变器 谐波交互 谐波预测 阻抗模型 谐振
Keywords:
 grid-connected inverters harmonics interactions harmonics prediction impedance model resonance
分类号:
TM 464
DOI:
10.15938/j.emc.2019.06.003
文献标志码:
A
摘要:
 针对并网系统谐波预测问题,提出引入逆变器实际输出谐波电流建立谐波阻抗模型的方案。首先分析并网系统谐波谐振原理,对单相LCL 型并网逆变器进行阻抗建模。为提高阻抗模型准确性,在分析逆变器低频特性的基础上,将单个逆变器并网谐波电流考虑到阻抗模型中,建立谐波阻抗模型,与电路模型仿真对比结果验证了模型的有效性。利用提出的谐波阻抗模型,对多逆变器并网系统进行谐波交互分析及谐波预测建模,以8 个并网变器为例,分析谐振对并网谐波电流和公共接入点( PCC) 处谐波电压的影响,谐波预测模型和电路模型对比仿真结果验证了该多逆变器谐波预测模型的有效性和准确性。
Abstract:
 Aimed at harmonic prediction of grid-connected systems,a harmonic impedance modeling scheme is proposed based on output harmonic current of inverter. The grid-connected system harmonic resonance theory was analyzed for impedance modeling of single-phase LCL grid-connected inverter. The low frequency characteristic of inverter was analyzed. Further,the harmonic current of single LCL gridconnected inverter was considered to obtain the harmonic impedance model,which is in good agreement with the simulation results of circuit model. The harmonic impedance model was used for harmonic interaction analysis and harmonic prediction modeling of multi-inverter grid-connected systems. An example of eight grid-connected inverters was proposed,and the resonance effect was analyzed for harmonic current and harmonic voltage over point of common coupling( PCC) . This harmonic prediction model was compared with circuit model to prove its effectiveness and accuracy.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2017 - 06 - 04
基金项目: 国家自然科学基金( 50907004)
作者简介: 王喜莲( 1974—) ,女,博士,教授,博士生导师,研究方向为电机及其控制、微电网电能质量分析;
程迪( 1994—) ,男,硕士研究生,研究方向为电机及其控制、微电网电能质量分析;
王顺( 1992—) ,男,硕士,研究方向为微电网电能质量分析。
通信作者: 王喜莲
更新日期/Last Update: 2019-10-12