• Home
  • Courses
  • Machines
    • Transformer
    • AC Motors
      • Induction Motor
      • Synchronous Motor
    • DC Motor
    • DC Generator
  • Power System
    • Circuit Breaker
    • Switchgear
    • Substation
    • Control System
    • Measurement
  • Electronics
  • Blog
  • Contact
    • Contact Us
    • Privacy Policy
Have any question?
[email protected]
RegisterLogin
StudyElectrical.Com
  • Home
  • Courses
  • Machines
    • Transformer
    • AC Motors
      • Induction Motor
      • Synchronous Motor
    • DC Motor
    • DC Generator
  • Power System
    • Circuit Breaker
    • Switchgear
    • Substation
    • Control System
    • Measurement
  • Electronics
  • Blog
  • Contact
    • Contact Us
    • Privacy Policy

    DC Generator

    Characteristics of DC Shunt Generator

    • Categories DC Generator, Electrical Machines
    DC Shunt Generator Characteristics

    In this article, you will learn the characteristics of a dc shunt generator. A shunt generator is a type of dc generator in which the field winding is connected in parallel with the armature winding so that the terminal voltage of the generator is applied across it. 

    The shunt field winding has many turns of fine wire having high resistance. Therefore, only a part of armature current flows through shunt field winding and the rest flows through the load.

    DC Shunt Generator Connection Diagram
    DC Shunt Generator Connection Diagram

    The figure shows the connections of a shunt-wound generator. The armature current Ia splits up into two parts; a small fraction Ish flowing through shunt field winding while the major part IL goes to the external load.

    Table of Contents

    • Open circuit characteristic
    • Internal characteristic
    • External or Load characteristic
    • Related Articles

    Open circuit characteristic

    The Open circuit characteristic (OCC) of a shunt generator is similar in shape to that of a series generator as shown in the figure below.

    Open Circuit Chatacteristics of DC Shunt Generator
    Open Circuit Chatacteristics of DC Shunt Generator

    The line OA represents the shunt field circuit resistance. When the generator is run at normal speed, it will build up a voltage OM.

    At no-load, the terminal voltage of the generator will be constant (= OM) represented by the horizontal dotted line MC.

    Internal characteristic

    When the generator is loaded, flux per pole is reduced due to armature reaction. 

    Therefore, e.m.f. E generated on load is less than the e.m.f. generated at no load. 

    As a result, the internal characteristic (E/Ia) drops down slightly as shown in Fig (ii).

    preview file+(5)
    Characteristics of Shunt Generator

    External or Load characteristic

    Curve 2 shows the external characteristic of a shunt generator.

    It gives the relation between terminal voltage V and loads current IL.

    V = E – IaRa = E – (IL + Ish)Ra

     

    Therefore, external characteristic curve will lie below the internal characteristic curve by an amount equal to drop in the armature circuit [i.e., (IL + Ish)Ra]as shown in Fig (ii).

    Note. It may be seen from the external characteristic that the change in terminal voltage from no-load to full load is small. The terminal voltage can always be maintained constant by adjusting the field rheostat R automatically.

    Related Articles

    • external-characteristics-of-dc-compound-generator.
      Characteristics of DC Compound Generator

      In a compound generator, both series and shunt excitation are combined as shown in the…

    • dc generator open circuit characteristics
      DC Generator Characteristics

      DC generator characteristics are the relations between excitation, terminal voltage and load exhibited graphically by means…

    • Testing a DC Motor
      Testing of DC Machines (DC Motor and DC Generator)

      There are several tests that are conducted for testing a dc machine (generator or motor)…

    • external-characteristic-of-seperately-excited-dc-generator
      Characteristics of Separately Excited DC Generators

      In a separately excited dc generator, the field coils are energized from an independent source. …

    • Dc series generator characteristics
      Characteristics of Series Wound DC Generators

      In this post, you will learn the characteristics of a series wound dc generator. This…

    • types of dc generator
      Types of DC Generator - Series, Shunt and Compound

      A DC generator requires MMF to establish flux in its magnetic circuit. The MMF necessary…

    • Share:
    author avatar
    Electrical Engineer

    Previous post

    Characteristics of Series Wound DC Generators
    August 12, 2014

    Next post

    Objective Questions on Alternator | Part 1
    August 12, 2014

    You may also like

    DC Machines Construction MCQ
    DC Machines Construction MCQ Objective Question Quiz with Answer
    24 February, 2023
    transformer-winding
    Transformer Windings: Types and Design
    22 November, 2022
    Photo by Sven Daniel on Unsplash
    What is CNC Machining? | Definition, Processes, Components & More
    3 November, 2022

      1 Comment

    1. memiza
      May 30, 2019
      Reply

      Thank you for this great information.

    Leave A Reply Cancel reply

    Your email address will not be published. Required fields are marked *

    Search Here

    From Blog

    Types 2Bof 2BProtective 2BRelays
    Classification or Types of Protective Relays
    05Sep2018
    armature-reaction-dc-generator
    Armature Reaction in DC Generator
    01Sep2014
    motor control center
    What are Motor Control Centres?
    03May2018
    moulded case circuit breaker
    Moulded Case Circuit Breaker (MCCB) – Types and Working
    04Jan2015

    Categories

    • Alternator
    • Arduino
    • Basic Electrical
    • Battery
    • Books
    • Cables
    • Capacitor
    • Career
    • Circuit Breaker
    • Control System
    • DC Generator
    • DC Generator MCQ
    • DC Generator Solved Problems
    • DC Motor
    • DC Motor MCQ
    • Drives
    • Electric Vehicles
    • Electrical Circuits
    • Electrical Machines
    • Electrical Relays
    • Electrical Safety
    • Electronics
    • Embedded System
    • Exams
    • Generation
    • Guest Post
    • HVDC
    • Instrumentation
    • Interview Questions
    • Locomotives
    • MCQ
    • Measurement
    • Microcontroller
    • Objective Questions
    • PCB
    • PLC
    • Power System
    • Problems and Solution
    • Projects
    • Resistor
    • Signals and Systems
    • Single Phase Motors
    • Substation
    • Switchgear
    • Synchronous Motor
    • Three Phase Induction Motor
    • Transformer
    • Transmission Line
    • Uncategorized

    Copyright © 2021 Study Electrical, Inc.

    © StudyElectrical.Com 2021

    Login with your site account

    Lost your password?

    Not a member yet? Register now

    Register a new account

    Are you a member? Login now