| 一种提高无功分配精度的下垂控制策略 |
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| 引用本文： | 余巧,张巧杰,李云侠. 一种提高无功分配精度的下垂控制策略[J]. 电机与控制应用, 2020, 47(2): 86-90 |
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| 作者姓名： | 余巧 张巧杰 李云侠 |
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| 作者单位： | 北京信息科技大学 自动化学院，北京 100192 |
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| 基金项目： | 国家自然科学基金项目（51777012） |
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| 摘 要： | 针对并联逆变器线路阻抗差异导致的无功功率分配不平均以及环流问题,提出了一种基于无功功率自适应补偿的改进型下垂控制策略。在传统的电压-无功功率下垂控制的基础上,引入无功功率的偏差作为补偿量,通过无功功率的自适应调节,改善无功功率的分配精度,实现环流抑制。最后,在MATLAB/Simulink仿真和NI PXIe-1071试验平台上进行了验证,证明改进的下垂控制可以有效地改善无功分配以及较好地抑制环流。
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| 关 键 词： | 无功功率分配 环流 下垂控制 无功偏差 |
| 收稿时间： | 2019-11-01 |
| 修稿时间： | 2019-12-28 |
A Droop Control Strategy for Improving the Sharing Accuracy of Reactive Power |
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| YU Qiao,ZHANG Qiaojie,LI Yunxia. A Droop Control Strategy for Improving the Sharing Accuracy of Reactive Power[J]. Electric Machines & Control Application, 2020, 47(2): 86-90 |
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| Authors: | YU Qiao ZHANG Qiaojie LI Yunxia |
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| Affiliation: | School of Automation, Beijing Information Science and Technology University, Beijing 100192, China |
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| Abstract: | Considering the unequal sharing of reactive power and the circulating current caused by the difference of line impedance of paralleled inverters, an improved droop control strategy based on adaptive compensation of reactive power is proposed. On the basis of the traditional voltagereactive power droop control, reactive power deviation is introduced as the compensation amount. After the adaptive adjustment of reactive power, it can effectively improve the accuracy of reactive power sharing and achieve great suppression of circulating current. The improved droop control is verified by the MATLAB/Simulink simulation and NI PXIe1071 experimental platform. |
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| Keywords: | reactive power sharing circulating current droop control reactive power deviation |
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