基于虚阻抗的弱电系统不间断电源控制方法

Q2 Social Sciences

International Journal of Energy Technology and Policy Pub Date : 2023-01-01 DOI:10.1504/ijetp.2023.134167

Yalei Shang

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引用次数: 0

摘要

弱电系统的不间断电源(UPS)如果存在明显的电压控制误差，将严重降低电源的稳定性。为此，提出了一种基于虚拟阻抗的弱电系统UPS控制方法。首先，分析了弱电系统和不间断电源的基本结构。其次，在UPS的电压、电流双环控制外增加逆变器输出电感电流反馈，形成虚拟阻抗环。最后利用虚阻抗抑制弱电系统中UPS的逆变循环电流，从而完成对UPS的控制。实验结果表明，该方法的最大电压控制误差不超过±0.331 V。因此，说明该方法的UPS控制性能较好。

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A control method for uninterruptible power supply in weak current systems based on virtual impedance

If there is a significant voltage control error in the uninterruptible power supply (UPS) of weak current systems, it will seriously reduce the stability of the power supply. Therefore, a virtual impedance based UPS control method for weak current systems is proposed. Firstly, analyse the basic structure of weak current systems and uninterruptible power supplies. Secondly, an inverter output inductor current feedback is added outside the voltage and current dual loop control of the UPS to form a virtual impedance loop. Finally, virtual impedance is used to suppress the inverter circulating current of the UPS in the weak current system, thereby completing the control of the UPS. The experimental results show that the maximum voltage control error of the proposed method does not exceed ±0.331 V. Therefore, it indicates that the UPS control performance of this method is good.

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来源期刊

International Journal of Energy Technology and Policy Social Sciences-Geography, Planning and Development

CiteScore

1.50

自引率

0.00%

发文量

期刊介绍： The IJETP is a vehicle to provide a refereed and authoritative source of information in the field of energy technology and policy.