基于双重二阶广义积分虚拟阻抗的并联逆变器控制

doi:10.11930/j.issn.1004-9649.2016.09.152.08

中国电力 ›› 2016, Vol. 49 ›› Issue (9): 152-159.DOI: 10.11930/j.issn.1004-9649.2016.09.152.08

基于双重二阶广义积分虚拟阻抗的并联逆变器控制

彭春华¹, 熊鑫¹, 潘蕾², 黄志敏³

1. 华东交通大学电气与自动化工程学院,江西南昌 330013;
2. 东南大学能源热转换及其过程测控教育部重点实验室,江苏南京 210096;
3. 国网江西上犹县供电有限公司,江西上犹 341200

收稿日期:2016-05-08 出版日期:2016-09-10 发布日期:2016-09-28
作者简介:彭春华（1973—）,男,江西乐平人,博士,教授,博导,从事微电网运行、电力系统优化调度研究。E-mail: chinapch@163.com
基金资助:
国家自然科学基金资助项目（51567007,51576040）; 江西省科技支撑计划项目（20142BBE50001）; 江西省自然科学基金资助项目（20152ACB20017）; 江西省教育厅科技项目（GJJ150533）

Parallel Inverters Control Based on Dual Second-Order Generalized Integrators Virtual Impedance

PENG Chunhua¹, XIONG Xin¹, PAN Lei², HUANG Zhimin³

1. School of Electrical & Electronic Engineering, East China Jiaotong University, Nanchang 330013, China;
2. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China;
3. Shangyou Power Supply Company of Jiangxi Province, Shangyou 341200, China

Received:2016-05-08 Online:2016-09-10 Published:2016-09-28
Supported by:
This work is supported by the National Natural Science Foundation of China(No; 51567007, No; 51576040); Science & Technology Pillar Program of Jiangxi Province(No; 20142BBE50001); Natural Science Foundation of Jiangxi Province(No; 20152ACB20017); Education Science Research Funds of Jiangxi Province (No; GJJ150533)

摘要/Abstract

摘要： 虚拟阻抗控制在并联逆变器控制中得到了广泛应用,但是会带来电压降落的问题,并且虚拟阻抗法需要对输出电流求导,使得系统对输出电流噪声和非线性负载很敏感。为解决此问题,提出一种基于双重二阶广义积分器（dual-second order general integrator,DSOGI）的虚拟阻抗模型,该模型避免了对输出电流求导,降低了对输出电流的敏感度,从而较好地抑制了输出电流中的噪声,并降低了非线性负载对系统的影响;同时可减少电压降落和抑制系统间的环流,改善了系统的电能质量。对逆变器并联控制系统进行了应用对比分析,结果验证了基于DSOGI虚拟阻抗模型的有效性。

关键词: 虚拟阻抗控制, 双重二阶积分器, 非线性负载, 逆变器并联

Abstract: The virtual impedance control is widely employed in parallel inverters control. However, voltage drop introduced by controller is not desirable. Also, virtual impedance is usually implemented as time derivative of inverters output current, which makes system highly sensitive to output current noise and nonlinear loads. A dual second-order general-integrator(DSOGI) scheme is proposed for virtual impedance implementation, which avoids to perform the time derivation function and is less sensitive to the output current and nonlinear loads. The proposed scheme has ability to suppress output current noise, and reduce effect of nonlinear loads on the system. It can also reduce voltage drop and improve system power quality. Simulation on parallel inverters system control proves the effectiveness of DSOGI based virtual impedance.

Key words: virtual impedance control, dual second-order general integrator (DSOGI), nonlinear load, parallel inverters system

中图分类号:

TM715

彭春华, 熊鑫, 潘蕾, 黄志敏. 基于双重二阶广义积分虚拟阻抗的并联逆变器控制[J]. 中国电力, 2016, 49(9): 152-159.

PENG Chunhua, XIONG Xin, PAN Lei, HUANG Zhimin. Parallel Inverters Control Based on Dual Second-Order Generalized Integrators Virtual Impedance[J]. Electric Power, 2016, 49(9): 152-159.

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https://www.electricpower.com.cn/CN/Y2016/V49/I9/152

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基于双重二阶广义积分虚拟阻抗的并联逆变器控制

Parallel Inverters Control Based on Dual Second-Order Generalized Integrators Virtual Impedance

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模态框（Modal）标题

基于双重二阶广义积分虚拟阻抗的并联逆变器控制

Parallel Inverters Control Based on Dual Second-Order Generalized Integrators Virtual Impedance

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