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相关概念视频

Maximum Power Transfer01:16

Maximum Power Transfer

258
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...
258
Power System Distribution01:25

Power System Distribution

239
Power system distribution involves delivering electrical energy from power plants to consumers through a network of transmission and distribution systems. The process begins at power plants, where energy from coal, gas, nuclear, water, and wind is converted into electrical energy. These plants use three-phase generators, typically rated between 50 to 1300 MVA, with terminal voltages ranging from a few kV to 20 kV, depending on the size and age of the units.
The transmission system is designed...
239
Transmission Line Design Considerations01:23

Transmission Line Design Considerations

135
Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
135
Maximum Power Flow and Line Loadability01:23

Maximum Power Flow and Line Loadability

111
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.
111
Cable Subjected to a Distributed Load01:24

Cable Subjected to a Distributed Load

683
The analysis of suspension bridges is a complex and critical process that involves multiple factors, including the shape and tension of the main cables. The main cables of suspension bridges are subjected to distributed loads, which result in changes in tensile forces and deformation of the cable. These loads must be carefully considered to ensure that the bridge is safe and capable of supporting the weight of different loads.
683
Network Function of a Circuit01:25

Network Function of a Circuit

290
Frequency response analysis in electrical circuits provides vital insights into a circuit's behavior as the frequency of the input signal changes. The transfer function, a mathematical tool, is instrumental in understanding this behavior. It defines the relationship between phasor output and input and comes in four types: voltage gain, current gain, transfer impedance, and transfer admittance. The critical components of the transfer function are the poles and zeros.
290

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相关实验视频

Updated: Jul 1, 2025

Quasi-light Storage for Optical Data Packets
07:45

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Published on: February 6, 2014

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异质光学网络和电力分配方案用于CubeSat间通信.

Xuan Huang, Peng Chen, Xu Xia

    Optics letters
    |March 1, 2024
    PubMed
    概括

    本研究探讨了立方卫星网络的可见光通信,提出了一种灵活的光学网络,提高效率并减少干扰. 这种新方法比传统方法提供了显著的性能提升.

    科学领域:

    • 太空通信 太空通信
    • 光学网络的建立是因为光学网络.
    • 立方体卫星技术技术

    背景情况:

    • 传统的射频 (RF) 和激光通信对立方卫星面临挑战.
    • 现有的方法在效率和干扰CubeSat之间的连接方面存在困难.

    研究的目的:

    • 研究可见光通信 (VLC) 作为立方卫星网络的可行替代方案.
    • 提出一个新的,灵活的异质光学网络,用于CubeSat之间的通信.
    • 在系统约束下,优化功率分配以最大限度地降低位误差率 (BER).

    主要方法:

    • 将立方体卫星分为配对的集群,以组织网络.
    • 在集群中采用各种光学调制技术,以提高效率和减轻干扰.
    • 导出用于光功率分配的封闭式解决方案,以最大限度地减少BER.

    主要成果:

    • 拟议的异质光学网络具有很高的灵活性.
    • 新型电力分配方案在10^-4.的BER下实现了显著的收益 (3.8dB).
    • 该系统比传统的电力分配方法具有实际优势.

    结论:

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    相关实验视频

    Last Updated: Jul 1, 2025

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    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
    09:43

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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    • 可见光通信为CubeSat间通信提供了一个有前途的解决方案.
    • 拟议的网络架构和电力分配策略提高了通信性能和效率.
    • 这种方法为未来的立方卫星网络设计提供了一种实用且优越的替代方案.