在三相光伏系统中使用直流电容作为旋转惯量

2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON) Pub Date : 2017-08-01 DOI:10.1109/INTERCON.2017.8079653

Pablo Vela, C. Valenzuela, J. Espinoza

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引用次数: 1

摘要

这项工作提供了计算直流链路电容器尺寸的指导方针，以便在短时间内提供比光伏板在正常工作条件下可以提供的额外能量。首先，使用了一个三相发电系统模型，该模型结合了光伏板和在网络侧带有LCL滤波器的逆变器。此外，还实现了一种能够在两种工作模式之间进行交换的控制算法。事实上，第一个是由MPPT产生的，第二个是当电网需要的能量超过光伏板所能产生的能量时产生的。结果表明，通过模拟大的旋转惯量，光伏系统可以在短时间内从直流链路提供额外的能量。在标准测试条件下进行了仿真。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Using the DC-link capacitor as a rotating inertia in a three phase PV system

This work provides the guidelines to calculate the size of the DC-link capacitor to contribute with additional energy - for a short period of time - than the photovoltaic panel can supply under normal operating conditions. First, a model of a three-phase electric generation system is used that combines photovoltaic panels and an inverter with an LCL filter at network side. In addition, a control algorithm capable of exchanging between two operating modes is implemented. Indeed, the first one is generated by the MPPT and the second one is generated when the grid demands more energy than the photovoltaic panel can generate. The results show that the PV system can provide additional energy - for a short period of time - from the dc link as emulating a large rotating inertia. The results are shown through simulations under standard test conditions (STC).

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来源期刊

2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)

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