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Related Concept Videos

Power Factor Correction01:20

Power Factor Correction

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The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
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Maximum Power Transfer01:16

Maximum Power Transfer

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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.
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The power factor is defined as the ratio of average (or active) power to apparent power, as illustrated by the relation
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A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
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Instantaneous Power01:22

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Instantaneous power is important in electrical circuits, mainly when dealing with sinusoidal input. Instantaneous power, denoted as p(t), results from the multiplication of the instantaneous voltage (v(t)) across an element and the instantaneous current (i(t)) flowing through it. This relationship adheres to the passive sign convention and represents a fundamental principle in electrical engineering.
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Work is done on an object when energy is transferred to the object. In other words, work is done when a force acts on a body that undergoes a displacement from one position to another. By definition, the work done by a force is the integral of the force with respect to the displacement along its path. Forces can vary as a function of position, and displacements can occur along various paths between two points. The magnitude of a force multiplied by the cosine of the angle that the force makes...
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Staying positive: producing net power.

Jack Acres1, Ioannis Antoniou1, Finlay Christie1

  • 1UKAEA (United Kingdom Atomic Energy Authority), Culham Campus, Abingdon, Oxfordshire OX14 3DB, UK.

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|August 26, 2024
PubMed
Summary
This summary is machine-generated.

The Spherical Tokamak for Energy Production (STEP) prototype powerplant will generate net electrical power by efficiently managing heat from its tokamak core. This unique power infrastructure design focuses on cooling, energy conversion, and grid export for reliable fusion energy production.

Keywords:
STEPenergyfusionpowerpowerplantthermodynamics

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Area of Science:

  • Fusion energy research
  • Nuclear engineering
  • Power plant design

Background:

  • The Spherical Tokamak for Energy Production (STEP) project aims to develop a prototype powerplant.
  • A key challenge is efficiently converting heat from the spherical tokamak into usable electrical power for the grid.

Purpose of the Study:

  • To explore the generation of electrical power from a spherical tokamak heat source.
  • To review the key functions of the STEP prototype powerplant's power infrastructure: cooling, power generation, and energy management.

Main Methods:

  • Review of design scope, challenges, and solutions for tokamak cooling and thermal energy extraction.
  • Analysis of thermal energy to electrical energy conversion processes.
  • Examination of site-wide energy distribution, storage, and export strategies.

Main Results:

  • The proposed power infrastructure design supports the STEP prototype powerplant's objective of exporting over 100 MWe.
  • The design emphasizes operability and performance, demonstrating the feasibility of net power generation through a unique infrastructure.
  • Key areas for improving power generation and reducing parasitic load have been identified.

Conclusions:

  • The STEP prototype powerplant's power infrastructure is designed to achieve its primary goal of net electrical power export.
  • Further refinement of the design will enhance confidence in achieving net power generation.
  • Recommendations are provided to optimize power generation and minimize energy losses within the STEP project.