| 虚拟同步机逆变器等效方式及滤波电路影响分析 |
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| 引用本文： | 徐华电,苏建徽,杨向真,杜燕,施永.虚拟同步机逆变器等效方式及滤波电路影响分析[J].控制理论与应用,2017,34(8):1053-1061. |
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| 作者姓名： | 徐华电 苏建徽 杨向真 杜燕 施永 |
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| 作者单位： | 合肥工业大学教育部光伏系统工程研究中心,合肥工业大学教育部光伏系统工程研究中心,合肥工业大学教育部光伏系统工程研究中心,合肥工业大学教育部光伏系统工程研究中心,合肥工业大学教育部光伏系统工程研究中心 |
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| 基金项目： | 台达环境与教育基金会“电力电子科教发展计划”重大项目(DREM2015002), 国家自然科学基金项目(51307042, 51407057)资助. |
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| 摘 要： | 基于逆变器的虚拟同步机(virtual synchronous generator,VSG)特性不但取决于控制策略,而且其等效方式及滤波电路对VSG动稳态行为与模型准确性的影响也是不可忽略的.本文重点对LCL滤波电路下不同等效方式的VSG特性进行了分析对比,并发现将包含LCL滤波电路整体的VSG逆变器完全等效为同步发电机(synchronous generators,SG)建立的模型存在误差,进而提出一种VSG逆变器准确建模的等效方法,通过该方法建立的模型在瞬态和稳态响应均可以与实际系统一致.仿真结果及其对比分析验证了所提方法的正确性和有效性.
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| 关 键 词： | 虚拟同步机 滤波电路 等效方式 动态特性 建模 |
| 收稿时间： | 2016/10/26 0:00:00 |
| 修稿时间： | 2017/5/3 0:00:00 |
Analysis of influences of equating ways and filter circuits for virtual synchronous generator-based inverter |
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| XU Hua-dian,SU Jian-hui,YANG Xiang-zhen,DU Yan and SHI Yong.Analysis of influences of equating ways and filter circuits for virtual synchronous generator-based inverter[J].Control Theory & Applications,2017,34(8):1053-1061. |
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| Authors: | XU Hua-dian SU Jian-hui YANG Xiang-zhen DU Yan and SHI Yong |
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| Affiliation: | Research Center for Photovoltaic System Engineering of Ministry of Education,Hefei University of Technology,Research Center for Photovoltaic System Engineering of Ministry of Education,Hefei University of Technology,Research Center for Photovoltaic System Engineering of Ministry of Education,Hefei University of Technology,Research Center for Photovoltaic System Engineering of Ministry of Education,Hefei University of Technology,Research Center for Photovoltaic System Engineering of Ministry of Education,Hefei University of Technology |
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| Abstract: | The characteristics of inverter-based virtual synchronous generator (VSG) not only depend on control strategies
but also are effected by the manner of equating and filter circuit. This paper focused on analyzing and studying
comparatively performances of VSGs, which are in different equivalent modes and equipped with LCL filter circuits.
Consequently, it was found that there are errors in the model established through regarding inverter and whole LCL circuit as
synchronous generator (SG). Then, a method was proposed for modeling inverter based on VSG, by which the mathematical
model built accurately describes the transient and steady characteristics of VSG-based inverter. The proposed method was
verified by the comparison and analysis of simulation results. |
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| Keywords: | virtual synchronous generator filter circuits ways of equating dynamic characteristic modeling |
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