An Active Damping Method Based on a Supercapacitor Energy Storage System to Overcome the Destabilizing Effect of Instantaneous Constant Power Loads in DC Microgrids
An Active Damping Method Based on a Supercapacitor Energy Storage System to Overcome the Destabilizing Effect of Instantaneous Constant Power Loads in DC Microgrids
复制标题
基于超级电容储能系统的主动阻尼方法克服直流微电网瞬时恒功率负载失稳效应
DOI：
10.1109/tec.2016.2605764
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发表时间：
2017-03
影响因子：
4.9
通讯作者：
陈晓龙
中科院分区：
文献类型：
--
作者：
常晓勇;李永丽;李轩;陈晓龙
提出了一种新的有源阻尼方法，以克服恒定功率负载（CPL）引起的直流微网（MG）的不稳定问题。该方法基于直流发电机中现有的储能系统（ESS）来实现。作为直流发电机中不可缺少的一部分，ESS在本文中不仅用于补偿系统中常规的功率不平衡，它还承担了额外的责任，用于调节系统阻尼以处理由CPL引起的不稳定问题。首先，一个简化的直流MG的稳定性准则进行了分析。在此基础上，主动阻尼方法，目的是在虚拟重塑负载在直流MG介绍。与所提出的方法，这是实现了本文中的超级电容ESS，在系统中的CPL实际上是减少和电阻性负载实际上是增加。因此，消除了直流MG中CPL的失稳效应。仿真和实验结果验证了该方法的有效性。该方法适用于各种元件、各种运行方式的直流磁轭。
This paper presents a novel active damping method to overcome instability problems of dc microgrids (MGs) caused by constant power loads (CPLs). This method is implemented based on the existing energy storage system (ESS) in the dc MGs. As an indispensable part in the dc MGs, the ESS in this paper is used for more than just compensating the conventional power unbalance in the system, it has taken an additional responsibility and is used for adjusting the system damping to deal with the instability problems induced by the CPLs as well. First, the stability criteria of a simplified dc MG are analyzed. Based on this, an active damping method that aims at virtually reshaping the loads in the dc MG is introduced. With the proposed method, which is realized by a supercapacitor ESS in this paper, the CPLs in the system are virtually reduced and the resistive loads are virtually increased. Therefore, the destabilizing effect of the CPLs in the dc MG is eliminated. Simulations and experiments are conducted and the effectiveness of the proposed method is verified. This method is suitable to be applied in the dc MG with various elements and variable operation modes.
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影响因子：
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