× Home Basic Electrical Circuit Theories Electrical Laws Materials Batteries Illumination Generation Transmission Distribution Switchgear Protection Measurement Control System Utilities Safety Transformer Motor Generator Electrical Drives Electronics Devices Power Electronics Digital Electronics MCQ Videos Forum

EMF Equation of DC Generator

The derivation of EMF equation for DC generator has two parts:

  1. Induced EMF of one conductor
  2. Induced EMF of the generator

Derivation for Induced EMF of One Armature Conductor

For one revolution of the conductor, Let, Φ = Flux produced by each pole in weber (Wb) and P = number of poles in the DC generator.

therefore, Total flux produced by all the poles And, Time taken to complete one revolution Where, N = speed of the armature conductor in rpm. Now, according to Faraday’s law of induction, the induced emf of the armature conductor is denoted by “e” which is equal to rate of cutting the flux.

Therefore, Induced emf of one conductor is Induced emf of one conductor is

Derivation for Induced EMF for DC Generator

Let us suppose there are Z total numbers of conductor in a generator, and arranged in such a manner that all parallel paths are always in series. Here, Z = total numbers of conductor A = number of parallel paths Then, Z/A = number of conductors connected in series We know that induced emf in each path is same across the line Therefore, Induced emf of DC generator E = emf of one conductor × number of conductor connected in series.

Induced emf of DC generator is Simple wave wound generator Numbers of parallel paths are only 2 = A Therefore, Induced emf for wave type of winding generator is Simple lap-wound generator Here, number of parallel paths is equal to number of conductors in one path i.e. P = A Therefore, Induced emf for lap-wound generator is



JJUDE commented on 26/04/2018
I want to know the pick3 numbers generator
Comments

Related Articles Principle of DC GeneratorConstruction of DC GeneratorCharacteristics of Series DC GeneratorCharacteristic of Separately Excited DC GeneratorEMF Equation of DC GeneratorParallel Operation of DC GeneratorsSelf Excited DC GeneratorsHopkinson TestPhasor Diagram for Synchronous GeneratorDC Generators characteristicsTypes of DC GeneratorsCharacteristic of ShuntMagnetization Curve of DC GeneratorApplications of DC GeneratorsMore Related Articles AlternatorWindingNew Articles Natural Gas Power GeneratorsHow to Choose the Best Theater Lighting Equipment?How to Make an Electric Water Pump?Voltage RegulatorsTuned Collector Oscillator Articles Categories MCQ Contact Us Basic Electrical Circuit Theories Electrical Laws Materials Batteries Illumination Generation Transmission Distribution Switchgear Protection Measurement Control System Utilities Safety Transformer Motor Generator Electrical Drives Electronics Devices Power Electronics Digital Electronics Videos