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相关概念视频

Maximum Power Transfer01:16

Maximum Power Transfer

278
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...
278
The Maximum Power Transfer Theorem01:20

The Maximum Power Transfer Theorem

649
Consider a linear AC Thevenin equivalent circuit connected to a load impedance.
The load connected draws the current, and the circuit delivers the power to the load. The alternating current flowing through the load is determined using the rectangular form of voltages, currents, network impedance, and load impedance. The average power delivered to the load is obtained from the product of the square of current and load resistance.
649
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

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Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
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Propagation Speed of Electromagnetic Waves01:30

Propagation Speed of Electromagnetic Waves

3.4K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
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The Power Superposition Principle01:19

The Power Superposition Principle

174
Consider a circuit with two sinusoidal voltage sources. Each one influences the circuit independently, and the superposition principle helps us understand the combined effect by adding up the responses from each source.
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Energy Stored In A Coaxial Cable01:31

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A coaxial cable consists of a central copper conductor used for transmitting signals, followed by an insulator shield, a metallic braided mesh that prevents signal interference, and a plastic layer that encases the entire assembly.
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic...
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Optrode Array for Simultaneous Optogenetic Modulation and Electrical Neural Recording
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阵列无线传输功率的多模式联合调制.

Da Li1, Xusheng Wu1, Wei Gao1

  • 1School of Electrical Engineering, Naval University of Engineering, Wuhan, China.

Scientific reports
|September 22, 2023
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种多模式无线电力传输系统,可以提高稳定性和有效范围. 它使用PI闭环控制来管理多个发射器线圈模式,提高整体系统的稳定性.

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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
  • 无线系统 无线系统

背景情况:

  • 传统的无线电力传输 (WPT) 系统通常存在单一工作模式和有限的有效范围.
  • 一个强大的WPT系统对于需要在不同距离上稳定输送功率的实际应用至关重要.

研究的目的:

  • 提出和验证一个新的阵列多发射器多模式无线电力传输 (WPT) 系统.
  • 通过对发射器线圈配置的智能控制,增强WPT系统的稳定性和有效工作区域.

主要方法:

  • 实施PI闭环控制系统来管理发射器线圈模式.
  • 开发一个能够在单,双和四重发射器线圈配置中运行的WPT系统.
  • 三个发射器线圈工作模式的联合调制,以获得稳定的输出功率.

主要成果:

  • 拟议的系统在三个不同的发射器线圈工作模式中显示出稳定的功率输出.
  • 实现了对单模WPT系统的局限性的有效补偿.
  • 显著提高了WPT系统的稳定性,并扩大了WPT系统的有效工作范围.

结论:

  • 阵列多发射器多模式WPT系统比传统设计提供了显著的进步.
  • 该PI闭环控制有效地实现稳定和强大的无线电力供应.
  • 这种方法扩大了WPT技术在各种场景中的适用性.