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相关概念视频

Transformers with Off-Nominal Turns Ratios01:25

Transformers with Off-Nominal Turns Ratios

149
In scenarios involving parallel transformers with disparate ratings, developing per-unit models requires accommodating off-nominal turns ratios. This situation arises when the selected base voltages are not proportional to the transformer’s voltage ratings. Consider a transformer where the rated voltages are related by the term a. If the chosen voltage bases satisfy a relationship involving term b, term c is defined as the ratio of these bases. This ratio is then substituted into the...
149
Applications Of NMR In Biology01:25

Applications Of NMR In Biology

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Nuclear magnetic resonance (NMR) spectroscopy is a very valuable analytical technique for researchers. It has been used for more than 50 years as an analytical tool. F. Bloch and E. Purcell formulated NMR in 1946 and won the 1952 Nobel Prize in Physics  for their work. Biological macromolecules such as proteins, nucleic acids, lipids, and organic molecules including pharmaceutical compounds, can be studied using this versatile tool that exploits the magnetic properties of certain nuclei.
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Transformers in Distribution System01:27

Transformers in Distribution System

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Transformers in distribution systems can be broadly categorized into distribution substation transformers and other distribution transformers. They are crucial for stepping down high transmission voltages to levels suitable for distribution and end-user applications.
Distribution substation transformers come in various ratings and typically use mineral oil for insulation and cooling. To prevent moisture and air from entering the oil, some transformers use an inert gas like nitrogen to fill the...
101
Transformers01:26

Transformers

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A device that transforms voltages from one value to another using induction is called a transformer. A transformer consists of two separate coils, or windings, wrapped around the same soft iron core. However, they are electrically insulated from each other.
The iron core has a substantial relative permeability. Therefore, the magnetic field lines generated due to the current in one winding are almost entirely confined within the core, such that the same magnetic flux permeates each turn of both...
1.1K
Types Of Transformers01:16

Types Of Transformers

968
Transformers can provide desired voltages to a circuit by modifying the number of turns in the secondary windings.
If the ratio of the number of turns in the secondary winding to that of the primary winding is greater than one, then the transformer is said to be a step-up transformer. In a step-up transformer, the voltage at the secondary winding is greater than the voltage applied at the primary winding.
However, if this ratio is less than one, the transformer is said to be a step-down...
968
Instrument Transformers01:23

Instrument Transformers

83
Instrument transformers, comprising voltage transformers (VTs) and current transformers (CTs), play crucial roles in power substations by providing isolated replicas of current or voltage for measurement and protection purposes. Voltage transformers reduce the primary voltage to levels suitable for relay operation and measurement, while current transformers scale down the primary current. The primary winding of a current transformer often consists of a single turn, achieved by threading the...
83

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Author Spotlight: Emerging Technologies and Advanced Tools for Decoding Metabolomics Data Analysis
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变压器在化学信息学中的应用

Kha-Dinh Luong1, Ambuj Singh1

  • 1Department of Computer Science, University of California Santa Barbara, Santa Barbara, CA 93106, United States.

Journal of chemical information and modeling
|May 30, 2024
PubMed
概括

本综述总结了变压器架构如何适应化学中的机器学习. 它强调了它们在各种化学数据表示中的应用,用于诸如属性预测等任务.

科学领域:

  • 计算化学是一种计算化学.
  • 机器学习是机器学习.
  • 化学领域的人工智能

背景情况:

  • 计算加速了化学过程,机器学习 (ML) 识别了对属性预测和物质生成等任务的模式.
  • 复杂的化学数据需要先进的ML架构,变压器模型显示出显著的前景.

研究的目的:

  • 审查最近应用变压器架构在化学中的机器学习问题的进展.
  • 提供现有工程适应变压器用于化学数据分析的综合总结.

主要方法:

  • 对化学中变压器架构的出版物的结构化审查.
  • 基于各种化学数据表示的分析.
  • 突出不同表示和模型的优缺点.

主要成果:

  • 变压器在化学中越来越多地被采用,彻底改变了ML应用.
  • 变压器的适应性在不同的化学数据表示上有所不同.
  • 目前正在进行的研究探讨了各种各样的用例和模型架构.

结论:

  • 变压器模型为复杂的化学学习任务提供了强大的解决方案.
  • 化学表示的选择对于有效的变压器模型应用至关重要.
关键词:
化学表征的化学表示.化学信息学 化学信息学图表,图表,图表,图表,图表,图表,图表,图表,图表,图表,图表机器学习是机器学习.序列的序列是一个序列.变压器的变压器是一个变压器.

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  • 未来的方向包括进一步探索化学领域的变压器能力.