| 三电平逆变器并联系统零序环流分析与抑制 |
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| 引用本文： | 陈甜甜,苏建徽,汪海宁,杨向真. 三电平逆变器并联系统零序环流分析与抑制[J]. 电测与仪表, 2022, 59(3): 163-168. DOI: 10.19753/j.issn1001-1390.2022.03.022 |
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| 作者姓名： | 陈甜甜 苏建徽 汪海宁 杨向真 |
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| 作者单位： | 教育部光伏系统工程研究中心,合肥230009;合肥工业大学电气与自动化工程学院,合肥230009 |
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| 基金项目： | 广东省重点领域研发计划资助(2019B010127001)；;中央高校基本科研业务费专项资金资助(PA2019GDPK0080)； |
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| 摘 要： | 针对共交直流母线的三电平逆变器直接并联系统的零序环流问题,建立了零序环流的等效模型,根据零序环流产生机理与特性进行了分类,并给出相应的抑制措施.针对零序环流的低频分量,提出了基于一阶全通滤波器的比例复数积分(Proportional Complex Integral,PCI)控制器对零序电压分量调节的方法,并根据控制系...
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| 关 键 词： | 三电平 并联系统 零序环流 PCI控制器 |
| 收稿时间： | 2019-11-05 |
| 修稿时间： | 2019-11-05 |
Analysis and Suppression of Zero-Sequence Circulation in Parallel System of Three -Level Inverter |
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| CHEN Tian-tian,SU Jian-hui,WANG Hai-ning and YANG Xiang-zhen. Analysis and Suppression of Zero-Sequence Circulation in Parallel System of Three -Level Inverter[J]. Electrical Measurement & Instrumentation, 2022, 59(3): 163-168. DOI: 10.19753/j.issn1001-1390.2022.03.022 |
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| Authors: | CHEN Tian-tian SU Jian-hui WANG Hai-ning YANG Xiang-zhen |
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| Affiliation: | 1.The Ministry of Education Photovolatic System Engineering Research Center;2.Hefei University of Technology,1.The Ministry of Education Photovolatic System Engineering Research Center;2.Hefei University of Technology,1.The Ministry of Education Photovolatic System Engineering Research Center;2.Hefei University of Technology,1.The Ministry of Education Photovolatic System Engineering Research Center;2.Hefei University of Technology |
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| Abstract: | In this paper, an equivalent model of zero-sequence circulations is established for three-level inverters in direct parallel parallel systems of coac-dc bus, and it is classified according to the generation mechanism and characteristics of zero-sequence circulations.Aiming at the low-frequency component of zero-sequence circulation, a method of adjusting the zero-sequence voltage component based on proportional complex integral (PCI) of first-order all-pass filter is proposed, and the controller parameters are designed according to the stability requirements of the control system.Finally, the simulation and experimental platform verify the effectiveness of the proposed control method in suppressing zero-sequence circulation. |
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| Keywords: | three level aparalleing system zero-sequence current PCI controller |
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