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相关概念视频

P-N junction01:11

P-N junction

466
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...
466
Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

171
The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
171
The Power Flow Problem and Solution01:26

The Power Flow Problem and Solution

168
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...
168
Power Factor Correction01:20

Power Factor Correction

155
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.
155
Control of Power Flow01:30

Control of Power Flow

252
There are several methods to control power flow in power systems:
252
Voltammetric Techniques: Pulse Voltammetry01:17

Voltammetric Techniques: Pulse Voltammetry

438
Differential-pulse voltammetry (DPV) is a type of voltammetry that involves applying a series of voltage pulses to an electrochemical cell while measuring the resulting current. In DPV, the differential pulse or small potential pulses are superimposed on a linear potential sweep. The magnitude of these pulses is typically small, often in the millivolt range. Each voltage pulse lasts a short duration, usually in the order of a few milliseconds, and is applied at regular intervals along the...
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改进了基于MPPT算法的电压扫描算法,用于部分阴影传导下的光伏系统.

Resat Celikel1, Musa Yilmaz2,3, Ahmet Gundogdu2

  • 1Firat University, Technology Faculty, Department of Mechatronics, Elazig, Turkey.

Heliyon
|December 6, 2024
PubMed
概括

本研究介绍了一种新的跳过电压算法,以增强在部分遮阳下的光伏系统中的最大功率点跟踪 (MPPT). 与现有算法相比,新方法显著提高了跟踪速度和效率.

关键词:
最大功率点跟踪 (MPPT) 是指最大功率点的跟踪.部分遮阳条件 部分遮阳条件模拟研究是模拟研究.电压扫描算法 电压扫描算法电压跳转算法 电压跳转算法

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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
  • 电力电子 电力电子 电力电子

背景情况:

  • 光伏 (PV) 系统需要高效的最大功率点跟踪 (MPPT) 算法,以实现最佳的能源采集.
  • 传统的MPPT方法在部分阴影条件下与性能降低作斗争.
  • 基于电压扫描的MPPT提供了更好的性能,但可以进一步优化速度.

研究的目的:

  • 为提高MPPT速度引入和评估一种新的电压跳转算法.
  • 在部分遮阳条件下提高MPPT算法的跟踪速度和效率.
  • 在没有先前的光伏面板特征知识的情况下,动态计算跳过电压.

主要方法:

  • 开发一个新的电压跳转算法,集成到电压扫描MPPT框架中.
  • 在 MATLAB/Simulink 中实现和模拟光伏系统模型 (4 个系列面板,增压转换器).
  • 对粒子优化 (PSO),古古搜索算法 (CSA) 和灰狼优化 (GWO) 的比较性能分析.

主要成果:

  • 拟议的电压跳转算法在五种部分阴影场景中显示了高跟踪效率,从99.13%到99.61%不等.
  • 实现了显著更快的跟踪速度,从0.2s到0.26s不等,超过了既定的优化算法.
  • 通过模拟在各种部分阴影条件下验证的有效性.

结论:

  • 新的电压跳转算法为部分阴影下的光伏系统在MPPT中提供了显著的进步.
  • 拟议的方法提供了优越的跟踪速度和高效率,使其成为光伏能源优化的一个有希望的解决方案.
  • 动态电压跳转消除了对预定义的光伏面板数据的需求,提高了适应性.