两个阶段单相独立光伏系统的非线性控制
Adil Latif1, Laiq Khan2, Shahrukh Agha2
1Department of Electrical and Computer Engineering, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, KPK, Pakistan.
PloS one
|February 8, 2024
概括
这项研究介绍了使用新型强大集成后退控制器 (RIBSC) 进行独立单相光伏逆变器的强大控制. 该系统在不同条件下实现最大功率点跟踪,具有卓越的性能.
科学领域:
- 电气工程 电气工程
- 可再生能源系统可再生能源系统
- 控制理论 控制理论
背景情况:
- 独立光伏 (PV) 系统需要强大的控制,以在变化条件下高效运行.
- 传统的控制器可能会与快速的环境变化和负载波动作斗争.
- 紧且具有成本效益的逆变器设计对于广泛采用光伏至关重要.
研究的目的:
- 为了呈现一个单相光伏逆变器,在独立模式下具有优越和强大的控制.
- 在不断变化的气候条件下实施非线性强大集成后退控制器 (RIBSC) 进行最大功率点跟踪 (MPP).
- 通过集成一个无变压器的Buck-Boost转换器来实现一个紧和经济的设计.
主要方法:
- 使用RIBSC的Buck-Boost直流-直流转换器的建模和布局.
- 使用回归平面来产生参考电压,以实现MPP.
- 将 RIBSC 应用于带有 LC 过器的 H 桥逆变器,以产生侧面输出.
- 采用利亚普诺夫稳定性标准进行系统验证.
- 在MATLAB/Simulink中模拟系统以进行性能评估.
主要成果:
- 拟议的RIBSC与后退和PID控制器相比,显示出更高的控制性能.
- 实现了0.01秒的快速跟踪时间.
- 保持了总波扭曲率为9.71%,根平均平方误差为0.3998,具有电阻负载.
- 经过验证的系统稳定性和有限时间的融合.
结论:
- 拟议的RIBSC为独立的光伏逆变器提供了强大的和高效的控制.
- 集成的Buck-Boost转换器设计增强了紧性和成本效益.
- 该系统在动态条件下有效实现MPP跟踪和正弦输出.
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