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相关概念视频

Batteries and Fuel Cells03:12

Batteries and Fuel Cells

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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Control of Power Flow01:30

Control of Power Flow

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There are several methods to control power flow in power systems:
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Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

245
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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The Power Flow Problem and Solution01:26

The Power Flow Problem and Solution

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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...
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Nuclear Power02:36

Nuclear Power

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Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
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Updated: Jul 26, 2025

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
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考虑燃料电池性能差异的燃料电池船舶的功率分配策略

Wei Cao1, Pan Geng2, Xiaoyan Xu2

  • 1Logistics Engineering College, Shanghai Maritime University, Shanghai, 201306, China. 1206448418@qq.com.

Scientific reports
|June 19, 2023
PubMed
概括

本研究介绍了燃料电池船舶的双层功率分配策略,优化燃料电池系统 (FCS) 的性能并减少的消耗. 该方法提高了船舶电力系统的整体效率,并降低了性能不佳的FCS单元的运营负担.

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科学领域:

  • 海洋工程 海洋工程
  • 可再生能源系统可再生能源系统
  • 控制系统 控制系统

背景情况:

  • 燃料电池船的性能各不相同,需要自适应式电源管理.
  • 现有的电力分配策略并不完全考虑到单个燃料电池系统 (FCS) 的性能差异.
  • 优化能源效率和运营负载分配对于海上应用至关重要.

研究的目的:

  • 为燃料电池船舶设计一种新的双层功率分配策略.
  • 提高船舶动力系统的能源效率.
  • 为了减少低性能燃料电池系统的运行负担.

主要方法:

  • 使用在线参数识别模型,实时更新每个FCS的最大功率和效率.
  • 识别模型集成了燃料电池半经验模型和自适应卡尔曼波器.
  • 第二层利用电池的充电状态,最大功率和最大效率来分配功率.

主要成果:

  • 拟议的战略相比同等分配减少了5.3%的总消耗,相比百花链战略减少了15.1%.
  • 性能较差的FCS的总输出功率分别减少了14.1%和15.7%.
  • 在船舶动力系统效率和运营负载均衡方面取得了显著的改进.

结论:

  • 开发的功率分配策略有效地管理不同燃料电池性能.
  • 该方法可以大幅降低气消耗和FCS的运行压力.
  • 这种方法为提高燃料电池驱动船舶的效率和可持续性提供了可行的解决方案.