模块化并联光伏并网逆变器的群控技术研究

doi:10.11985/2016.04.006

电气工程学报 ›› 2016, Vol. 11 ›› Issue (4): 35-40.doi: 10.11985/2016.04.006

• 合肥工业大学电气与自动化工程学院专刊（一） • 上一篇下一篇

模块化并联光伏并网逆变器的群控技术研究

黄军军¹,汪海宁^1,²

1.合肥工业大学电气与自动化工程学院合肥 230009
2.合肥工业大学教育部光伏系统工程研究中心能源研究所合肥 230009

收稿日期:2016-01-04 出版日期:2016-04-25 发布日期:2020-01-02
作者简介:黄军军男 1989年生,硕士,研究方向为新能源与发电技术。|汪海宁女 1978年生,副教授,硕士生导师,研究方向新能源发电,电力传动。
基金资助:
广东省引进创新科研团队计划资助(2011N015)

Group-Control Technology of Modular Parallel PV Grid-Connected Inverter

Huang Junjun¹,Wang Haining^1,²

1.School of Electrical and Automation Engineering Hefei University of Technology Hefei 230009 China
2.Research Center for Photovoltaic System Engineering of MOE Energy Instirute Hefei University of Technology Hefei 230009 China

Received:2016-01-04 Online:2016-04-25 Published:2020-01-02

摘要/Abstract

摘要：

考虑到天气和光照变化的影响,光伏并网逆变器大部分时间不能工作在额定功率下,此时传统的并网逆变器就会出现发电效率低的问题。为了提高光伏阵列输出功率的效率,本文采用多个小功率的逆变模组并联组成一台大功率的逆变器,利用集群控制的方式协调各小功率逆变模组工作,并加以直流侧下垂特性来实现均流,提高系统的可靠性和动态性。从而实现了电站在全功率范围内运行时具有较高的效率和较好的电能质量。

关键词: 模块并联, 群控技术, 直流侧下垂, 可靠性和动态性

Abstract:

Due to the changes of the weather and the insolation, PV grid-connected inverters can hardly operate at their rated-power all time. In this case, some issues, like low efficiency and poor power quality, could happen to the traditional centralized-inverters. In order to enhance the efficiency for the solar power generation, a high-power inverter built up by a plurality of low-power modular inverters parallel with each other is introduced in the paper, which could coordinate the parallel low-power modular inverters in operation through group-control technology and realize the current average control by introducing the droop feature in DC side for the high-power inverter. Thus, the dynamic performance and stability for the high-power inverter system could have a significant improvement. As a result, a better efficiency and power quality will be achieved while the photovoltaic power plants are operating in all the power range.

Key words: Modular parallel inverters, group-control technology, droop feature in DC side, the dynamic performance and stability

中图分类号:

TM464

黄军军,汪海宁. 模块化并联光伏并网逆变器的群控技术研究[J]. 电气工程学报, 2016, 11(4): 35-40.

Huang Junjun,Wang Haining. Group-Control Technology of Modular Parallel PV Grid-Connected Inverter[J]. Journal of Electrical Engineering, 2016, 11(4): 35-40.

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模块化并联光伏并网逆变器的群控技术研究

Group-Control Technology of Modular Parallel PV Grid-Connected Inverter

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