使用深度Q网络进行全球最大功率点跟踪的深度强化学习:在真实光伏系统中设计和实验
Luis Felipe Giraldo1, Jorge Felipe Gaviria2, María Isabella Torres2,1
1Department of Biomedical Engineering, Universidad de Los Andes, Bogotá, Colombia.
Heliyon
|November 18, 2024
概括
通过使用深度Q网络 (DQN) 代理的深度增强学习 (DRL) 成功跟踪光伏系统中的全球最大功率点 (GMPP). 通过避免局部电源点,DQN代理优于传统方法,特别是在部分遮阳下.
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
- 人工智能的人工智能
背景情况:
- 传统的最大功率点跟踪 (MPPT) 算法,如 Perturb 和 Observe (P&O) 与部分阴影条件 (PSC) 进行斗争,经常在局部最大值上卡住.
- 光伏 (PV) 系统需要高效的MPPT来最大限度地利用动态环境因素的能量.
研究的目的:
- 实验验证在光伏系统中实时MPPT的深度Q网络 (DQN) 代理的集成.
- 在均和部分遮阳条件下,将DQN代理与P&O算法的性能进行比较.
- 为基于DRL的MPPT模型建立一个强大的测试管道.
主要方法:
- 在实时MPPT的同步DC-DC巴克转换器中实现DQN代理.
- 在均和部分遮阳条件下进行实验测试.
- 对已建立的P&O算法进行比较性绩效分析.
主要成果:
- 与P&O算法相比,DQN代理在模拟中表现出优异的性能.
- 在PSC下的现实世界测试中,DQN代理实现了高达63.5%的功率提取比P&O算法,它被困在局部最大值.
- 成功建立了DRL模型的功能测试管道.
结论:
- DRL,特别是DQN,为光伏系统中先进的MPPT提供了一个有希望的方法,在具有挑战性的条件下优于传统方法.
- 实验验证证证实了DQN在实时GMPP跟踪方面的潜力,即使对模拟趋势的直接复制存在限制.
- 提供开源资源,包括硬件设计和代码,以促进进一步的研究和开发.
更多相关视频
相关概念视频
01:16Maximum Power Transfer
231
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
By substituting the entire circuit with...
231
01:23Maximum Power Flow and Line Loadability
95
The maximum power flow for lossy transmission lines is derived using ABCD parameters in phasor form. These parameters create a matrix relationship between the sending-end and receiving-end voltages and currents, allowing the determination of the receiving-end current. This relationship facilitates calculating the complex power delivered to the receiving end, from which real and reactive power components are derived.
95
01:20Power Factor Correction
157
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.
157
01:11P-N junction
469
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
469
01:26The Power Flow Problem and Solution
172
Power flow problem analysis is fundamental for determining real and reactive power flows in network components, such as transmission lines, transformers, and loads. The power system's single-line diagram provides data on the bus, transmission line, and transformer. Each bus k in the system is characterized by four key variables: voltage magnitude Vk, phase angle δk, real power Pk, and reactive power Qk. Two of these four variables are inputs, while the...
172
01:11Power Factor
373
The power factor is defined as the ratio of average (or active) power to apparent power, as illustrated by the relation
373