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相关概念视频

Phase-lead and Phase-lag Controllers01:22

Phase-lead and Phase-lag Controllers

159
Understanding the working function of different types of controllers can be illustrated with practical analogies, such as adjusting a stereo's volume equalizer. Cranking up the bass involves a phase-lead controller, which functions as a high-pass filter, while increasing the treble uses a phase-lag controller, which acts as a low-pass filter. PD controllers, similar to high-pass filters, enhance the system's response to high-frequency components. PI controllers, akin to low-pass...
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MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

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Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
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Control of Power Flow01:30

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There are several methods to control power flow in power systems:
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Bridge rectifier01:24

Bridge rectifier

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The bridge rectifier is essential in electronics for efficiently converting alternating current (AC) to direct current (DC). Comprised of four diodes configured in a bridge layout, this rectifier effectively processes both the positive and negative halves of the AC waveform, making it superior to half-wave and full-wave center-tapped rectifiers in terms of voltage regulation and output stability.
Operationally, the bridge rectifier allows current flow through two of its diodes during each...
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Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

175
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:
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Maximum Power Flow and Line Loadability01:23

Maximum Power Flow and Line Loadability

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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.
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基于Brayton-Moser被动性的控制器,用于常量功率负载与间接增压转换器.

P V Nithara1, R Anand1, J Ramprabhakar1

  • 1Department of Electrical and Electronics Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Bengaluru, India.

Scientific reports
|November 16, 2024
PubMed
概括

一个新的基于Brayton-Moser被动性的控制器 (BM-PBC) 提高了DC微电网的稳定性. 这种先进的控制提高了效率,并减少了与传统方法相比的电流.

关键词:
基于BraytonMoser被动性的控制器恒定的功率负载是恒定的.电流微电网是直流的微电网.非线性控制器的非线性控制器两个层次的IBC.

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科学领域:

  • 电气工程 电气工程
  • 电力电子 电力电子 电力电子
  • 控制系统 控制系统

背景情况:

  • 具有可再生能源的直流微电网利用间接增压转换器 (IBC) 提高性能.
  • 恒定功率负载 (CPL) 由于其非线性特征,在DC微电网中引入了稳定性挑战.
  • 传统控制器在CPL和系统不确定性下努力保持稳定性.

研究的目的:

  • 介绍和分析Brayton-Moser (BM) 基于被动性的控制器 (PBC) 对于具有CPL的2级IBC接口直流微电网.
  • 在非线性CPL条件下提高DC微电网系统的稳定性.
  • 评估BM-PBC提供的性能改进.

主要方法:

  • 为二级IBC系统开发非线性BM-PBC.
  • 包含连续连接的虚拟阻抗,以提高信号稳定性.
  • 使用利亚普诺夫稳定性方法进行稳定性分析.
  • 在 MATLAB/Simulink 中在各种操作条件下进行系统建模和模拟.

主要成果:

  • 该BM-PBC确保高信号稳定性在DC微电网与CPL.
  • 拟议的控制器实现了系统效率的显著提高.
  • 在BM-PBC中观察到电流的显著减少.
  • 对比分析表明,与传统的PI控制器相比,其性能优越.

结论:

  • BM-PBC是一种强大而有效的控制策略,用于稳定使用CPL的DC微电网.
  • 该控制器在效率和当前波纹减少方面提供了显著的改进.
  • 这种方法提供了一种可靠的解决方案,以提高基于可再生能源的DC微电网的稳定性和性能.