基于LCL滤波器的三相控制光伏并网系统传感器约简

IF 1.6 Q4 ENERGY & FUELS
Khushboo Kumari, Amit Kumar Jain
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引用次数: 2

摘要

本文研究了单级太阳能光伏(PV)三相并网系统的基于lc滤波器的三方控制问题。本文提出了一种新型的基于电容侧电压传感的lcl滤波器三方控制方法。传统的控制算法需要六个传感器来检测逆变器侧电感电流、电容侧电压和电网侧电感电流。然而,在这项工作中,为了执行三方控制算法,需要检测滤波器电容上的唯一电压。通过滤波电容的电压估计逆变器侧电感电流和电网侧电感电流。该算法在减小尺寸、重量和实现成本方面具有优势。因此,硬件的复杂性降低了。为了保证系统的稳定性和鲁棒性,对系统的参数变化进行了分析。观察了数字控制延时变化下的系统响应。该方法为满足电网监管要求提供了一种经济有效的解决方案。所实现的系统在MATLAB/Simulink平台上进行了广泛的仿真测试和验证。通过实验室设计样机的实验结果对系统进行了验证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Sensor reduction of a PV-grid tied system with tripartite control based on LCL filter

Sensor reduction of a PV-grid tied system with tripartite control based on LCL filter

This paper deals with a tripartite control based on LCL-filter for a single-stage solar photovoltaic (PV) interconnected three-phase grid-tied system. This work proposes a novel tripartite control for LCL-filter based on sensing capacitor side voltage utilising two sensors. Conventionally, the control algorithm requires six sensors for sensing the inverter-side inductor current, capacitor side voltage, and grid-side inductor current. However, in this work, to execute the tripartite control algorithm, the only voltage across the filter capacitor need to be sensed. The voltage across the filter capacitor estimates inverter-side inductor current and grid-side inductor current. The proposed algorithm offers the advantage/benefit in reducing size, weight, and implemented cost. As an outcome, the reduction in the complexity of the hardware takes place. The implemented system is analysed for parametric variation to ensure the stability and robustness of the system. The system response is observed under digital control delay variation. The proposed method offers a cost-effective solution for meeting grid regulation. The implemented system is extensively tested and validated by simulation in the MATLAB/Simulink platform. The justification of the system is carried out by experimental results obtained from the prototype designed in the laboratory.

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来源期刊
IET Energy Systems Integration
IET Energy Systems Integration Engineering-Engineering (miscellaneous)
CiteScore
5.90
自引率
8.30%
发文量
29
审稿时长
11 weeks
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