一种基于观测器的并网电源变流器直流链路电压自适应控制方法

2019 IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2019-06-01 DOI:10.1109/PEDG.2019.8807736

Guanhong Song, Bo Cao, Liuchen Chang, Riming Shao

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引用次数: 1

摘要

在过去的几十年里，由于不断增长的能源需求和严峻的环境问题，可再生能源经历了显著的增长。为了对这些分布式能源进行电力转换和并网，并网电源变流器得到了广泛的应用。在典型的三相并网功率变换器中，直流链路电容器通常用作能量缓冲器，以保持功率转换所需的适当直流电压。然而，当来自分布式能源的输入功率快速变化时，直流链路电压变化明显。因此，一个合适的直流电压控制器是必不可少的，以执行快速直流电压调节。本文提出了一种基于自适应观测器的三相并网电源变换器直流电压控制方法，以减小直流电压波动，提高状态观测器的稳定性。

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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A Novel Adaptive Observer-Based DC-Link Voltage Control for Grid-Connected Power Converters

In the past decades, renewable energy has been experiencing significant growth due to the increasing energy demand and critical environmental issues. In order to perform power conversion and grid integration for these distributed energy resources, grid-connected power converters are therefore widely used. In a typical three-phase grid-connected power converter, DC-link capacitors are normally used as an energy buffer to maintain a proper DC voltage for the power conversion. However, the DC-link voltage varies significantly when the input power from the distributed energy resources changes rapidly. Hence, a proper DC-link voltage controller is essential to perform fast DC-link voltage regulation. In this paper, a novel adaptive observer-based DC-link voltage control is proposed for three-phase grid-connected power converters to minimize the DC-link voltage fluctuation and to improve the stability of the state observer.

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来源期刊

2019 IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

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