独立光伏系统的全面控制策略,通过循环实验中的微控制器集成最优功率采集和电压调节
Abdulaziz Almalaq1, Ambe Harrison2,3, Ibrahim Alsaleh1
1Department of Electrical Engineering, University of Hail, 55211, Hail, Hail, Saudi Arabia.
Scientific reports
|November 3, 2025
概括
本研究介绍了独立光伏 (PV) 系统的新型控制框架,将最大功率点跟踪 (MPPT) 与直流负载电压调节相结合,以提高效率和稳定性.
科学领域:
- 可再生能源系统可再生能源系统
- 控制理论 控制理论
- 电力电子 电力电子 电力电子
背景情况:
- 独立的光伏 (PV) 系统需要高效的能量采集和稳定的输出电压.
- 现有的方法往往优先考虑功率优化而不是电压调节,导致性能妥协.
研究的目的:
- 为独立的光伏系统引入双重目标的控制框架.
- 将最大功率点跟踪 (MPPT) 与精确的直流负载电压调节相结合.
- 在动态条件下确保高效的能量采集和强大的输出电压稳定性.
主要方法:
- 无传感器MPPT的新型参考电压估计器 (RVE) 使用辐射估计和辐射基函数神经网络.
- 两个基于Lyapunov的非线性控制器管理一个双阶段的Boost-Buck转换器.
- 微控制器在循环中的实验用于验证.
主要成果:
- 准确的实时最大功率点 (MPP) 预测.
- 有限时间负载侧电压稳定与快速恢复时间 (<3 ms).
- 非常低的平均绝对误差 (0.1253V用于MPPT,0.0793V用于负载调节).
结论:
- 拟议的框架成功地将稳定的电压调节与最佳的电力采集在一个单一架构中统一起来.
- 证明了独立光伏系统的卓越效率,可靠性和弹性.
- 为现实世界的光伏应用提供可部署的解决方案.
相关概念视频
Control of Power Flow
665
There are several methods to control power flow in power systems:
665
Generator Voltage Control
615
Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand, use...
615
PI Controller: Design
1.1K
Proportional Integral (PI) controllers are a fundamental component in modern control systems, widely used to enhance performance and mitigate steady-state errors. They are particularly effective in applications such as automatic brightness adjustment on smartphones, where they excel at mitigating steady-state errors for step-function inputs. Unlike PD controllers, which require time-varying errors to function optimally, PI controllers leverage their integral component to address residual...
1.1K
Power Factor Correction
477
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
477
Open and closed-loop control systems
1.5K
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
1.5K
Conservation of AC Power
639
The principle of power preservation is applicable to both ac and dc circuits. This principle, when applied to AC power, asserts that the complex, real, and reactive powers produced by the source are equal to the total complex, real, and reactive powers absorbed by the loads. When two load impedances are connected in parallel to an ac source V, the complex power provided by the source can be calculated using the relation
639


