利用光伏电池板和 CPL 实现直流微电网系统的稳定与控制

IF 0.9 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC
Hossein Akbari, Jalal Nazarzadeh
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引用次数: 0

摘要

直流/直流转换器通常用于直流微电网,以实现系统在不同运行条件下的预期性能。带有太阳能光伏电池板、蓄电池和恒功率负载的隔离直流微电网的动态特性是一个分数非线性模型,因此应采用复杂非线性方法进行控制器设计和稳定系统。在具有非线性元素的多输入多输出系统中,应使用非线性控制方法,但本文提出了一种直接的技术,用于设计隔离直流微电网中降压、升压和降压-升压转换器的分散控制器,以稳定系统和太阳能光伏板的最大功率点跟踪(MPPT)控制。所提出的方法可以考虑对非线性系统进行非线性分散反馈线性化控制。根据系统中转换器的性能,为转换器引入适当的动态模型,并确定分散控制器。对各种情况进行了模拟,并与传统方法进行了比较。结果表明,与其他技术相比,输出变量的沉淀时间和直流链路电压的过压减少了不到 30%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Stabilizing and Control of the DC-Microgrid Systems with PV Panels and CPLs
The DC/DC converters are commonly used in DC microgrids to achieve the desired performance of a system under di ff erent operating conditions. The dynamics of an isolated DC microgrid with solar photovoltaic panels, battery, and constant power load is a fractional nonlinear model; thus, the complex nonlinear method should be applied for controller design and stabilizing the system. In multi-input multi-output systems with non-linear elements, non-linear control methods should be used, but this paper presents a straightforward technique for designing decentralized controllers for the buck, boost, and buck-boost converters in an isolated DC microgrid to stabilize the system and Maximum Power Point Tracking (MPPT) control of the solar photovoltaic panels. The presented methods can consider the nonlinear decentralized feedback linearizing control for the nonlinear system. Depending on the performance of the converters in the system, proper dynamic models are introduced for the converters, and decentralized controllers are determined. Various scenarios are simulated and compared to conventional methods. The results indicate that the settling time of the output variables and the overvoltage of the DC-link voltage are reduced by less than 30% compared to other techniques.
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来源期刊
Electrica
Electrica Engineering-Electrical and Electronic Engineering
CiteScore
2.10
自引率
0.00%
发文量
59
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