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无互联线并联逆变器的功率解耦控制策略
引用本文:阚加荣,谢少军,吴云亚.无互联线并联逆变器的功率解耦控制策略[J].中国电机工程学报,2008,28(21):40-45.
作者姓名:阚加荣  谢少军  吴云亚
作者单位:1. 南京航空航天大学自动化学院,江苏省,南京市,210016
2. 盐城工学院电工电子实验中心,江苏省,盐城市,224003
摘    要:传统下垂控制方法会引起无互联线逆变器并联系统的误调节。该文在考虑逆变器输出阻抗和线路阻抗中阻性分量的基础上,分析了因逆变器模块滤波电感和线路阻抗差异造成的无功分配不均的原因,提出了功率下垂解耦控制方法。该方法可以消除并联系统的误调节,但并不能改善功率分配不均的现象。分析得知,逆变器模块较大的输出电压幅值将使该逆变器发出较大的有功功率和无功功率,由此提出了改进型的功率解耦控制策略,该方法可以使功率分配不均的现象得到改善。原理试验样机验证了所提控制方法的正确性和先进型。

关 键 词:逆变器  并联  功率均分  解耦控制  参数差异
收稿时间:2006-10-11

Research on Decoupling Droop Characteristic for Parallel Inverters Without Control Interconnection
KAN Jia-rong XIE Shao-jun WU Yun-ya.Research on Decoupling Droop Characteristic for Parallel Inverters Without Control Interconnection[J].Proceedings of the CSEE,2008,28(21):40-45.
Authors:KAN Jia-rong XIE Shao-jun WU Yun-ya
Abstract:In the paralleled inverters without control interconnection, the traditional droop characteristic may result in misregulation at the instance of hot-parallel. Considering of the resistive component in the output impedance and line impedance, the reason of the active and reactive power sharing improperly is analyzed. The decouple droop control scheme is presented. In this control scheme, the misregulation can be eliminated but the improper power sharing problem can not be improved. The inverter modular with the larger voltage amplitude will export the larger active and reactive power.* The improved power decouple control scheme is proposed, which can improve the condition of the power sharing. The validity and advancement of the proposed control scheme have been verified by the experimental results.
Keywords:inverter  parallel operation  power sharing  decoupling control  parameters unbalance
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