1. Home
  2. Power and energy
  3. Conversion of electrical energy
  4. AC and DC Networks Association. Optimization of Power Transfer

  5. Direct current (DC) sources

Article | REF: D1163 V1

AC and DC Networks Association. Optimization of Power Transfer

Author: Michel PINARD

Publication date: August 10, 2014, Review date: April 26, 2021

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!

Français

2. Direct current (DC) sources

2.1 Imposed voltage

Why impose voltage for DC transmission? First of all, the idea came naturally to electricians who, as early as the 19th century, had been using near-constant DC voltage sources: batteries, accumulators, dynamos...

The physical law is more imperative. Consider a generator with electromotive force E, internal resistance r, output voltage U, and current I. We write that :

U=E−rI( 1 )
P=UI=EI−rI2
You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!

The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors
+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year
From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

This article is included in

Conversion of electrical energy

This offer includes:

Knowledge Base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

Practical Path

Operational and didactic, to guarantee the acquisition of transversal skills

Doc & Quiz

Interactive articles with quizzes, for constructive reading

Subscribe now!

Ongoing reading
Direct current (DC) sources
Outline