Back EMF of DC Generator given Flux Calculator

✖Back EMF constant is ratio of back EMF to the motor speed, and is a useful parameter for designing and analyzing motor control systems.ⓘ Back EMF Constant [K_e]			+10% -10%
✖Angular speed is the rate of rotation about an axis, measuring how the angle changes with time. It is measured in radian/sec.ⓘ Angular Speed [ω_s]			+10% -10%
✖Flux per Pole refers to the amount of magnetic flux produced by each individual pole of the generator field winding. It is an important parameter and affects the output voltage.ⓘ Flux per Pole [Φ_p]			+10% -10%

✖EMF is defined as the electro motive force which is needed to move the electrons within an electrical conductor to generate flow of current through the conductor.ⓘ Back EMF of DC Generator given Flux [E]

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Back EMF of DC Generator given Flux

Formula

`"E" = "K"_{"e"}*"ω"_{"s"}*"Φ"_{"p"}`

Example

`"14.3184V"="0.76"*"314rad/s"*"0.06Wb"`

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Back EMF of DC Generator given Flux Solution

STEP 0: Pre-Calculation Summary

Formula Used

EMF = Back EMF Constant*Angular Speed*Flux per Pole
E = K_e*ω_s*Φ_p
This formula uses 4 Variables

Variables Used

EMF - (Measured in Volt) - EMF is defined as the electro motive force which is needed to move the electrons within an electrical conductor to generate flow of current through the conductor.
Back EMF Constant - Back EMF constant is ratio of back EMF to the motor speed, and is a useful parameter for designing and analyzing motor control systems.
Angular Speed - (Measured in Radian per Second) - Angular speed is the rate of rotation about an axis, measuring how the angle changes with time. It is measured in radian/sec.
Flux per Pole - (Measured in Weber) - Flux per Pole refers to the amount of magnetic flux produced by each individual pole of the generator field winding. It is an important parameter and affects the output voltage.

STEP 1: Convert Input(s) to Base Unit

Back EMF Constant: 0.76 --> No Conversion Required
Angular Speed: 314 Radian per Second --> 314 Radian per Second No Conversion Required
Flux per Pole: 0.06 Weber --> 0.06 Weber No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

E = K_e*ω_s*Φ_p --> 0.76*314*0.06

Evaluating ... ...

E = 14.3184

STEP 3: Convert Result to Output's Unit

14.3184 Volt --> No Conversion Required

FINAL ANSWER

14.3184 Volt <-- EMF

(Calculation completed in 00.004 seconds)

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Vishwakarma Government Engineering College (VGEC), Ahmedabad

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< 17 DC Generator Characteristics Calculators

Mechanical Efficiency of DC Generator using Armature Voltage

Go Mechanical Efficiency = (Armature Voltage*Armature Current)/(Angular Speed*Torque)

EMF for DC Generator for Wave Winding

Go EMF = (Number of Poles*Rotor Speed*Flux per Pole*Number of Conductor)/120

Stray Losses of DC Generator given Converted Power

Go Stray Loss = Input Power-Mechanical Losses-Core Loss-Converted Power

Core Losses of DC Generator given Converted Power

Go Core Loss = Input Power-Mechanical Losses-Converted Power-Stray Loss

Armature Resistance of DC Generator using Output Voltage

Go Armature Resistance = (Armature Voltage-Output Voltage)/Armature Current

EMF for DC Generator with Lap Winding

Go EMF = (Rotor Speed*Flux per Pole*Number of Conductor)/60

Back EMF of DC Generator given Flux

Go EMF = Back EMF Constant*Angular Speed*Flux per Pole

Power Drop in Brush DC Generator

Go Brush Power Drop = Armature Current*Brush Voltage Drop

Electrical Efficiency of DC Generator

Go Electrical Efficiency = Output Power/Converted Power

Induced Armature Voltage of DC Generator given Converted Power

Go Armature Voltage = Converted Power/Armature Current

Mechanical Efficiency of DC Generator using Converted Power

Go Mechanical Efficiency = Converted Power/Input Power

Armature Current of DC Generator given Power

Go Armature Current = Converted Power/Armature Voltage

Armature Power in DC Generator

Go Amature Power = Armature Voltage*Armature Current

Field Copper Loss in DC Generator

Go Copper Loss = Field Current^2*Field Resistance

Output Voltage in DC Generator using Converted Power

Go Output Voltage = Converted Power/Load Current

Overall Efficiency of DC Generator

Go Overall Efficiency = Output Power/Input Power

Converted Power in DC Generator

Go Converted Power = Output Voltage*Load Current

Back EMF of DC Generator given Flux Formula

EMF = Back EMF Constant*Angular Speed*Flux per Pole
E = K_e*ω_s*Φ_p

What is the emf equation for DC generator?

Emf Equation of a DC Generator. As the armature rotates, a voltage is generated in its coils. In the case of a generator, the emf of rotation is called the Generated emf or Armature emf and is denoted as Er = Eg. In the case of a motor, the emf of rotation is known as Back emf or Counter emf and represented as Er = Eb.

How to Calculate Back EMF of DC Generator given Flux?

Back EMF of DC Generator given Flux calculator uses EMF = Back EMF Constant*Angular Speed*Flux per Pole to calculate the EMF, Back EMF of DC Generator given Flux refers to the phenomenon armature rotates in a magnetic field created by the field winding, and the relative motion between the field and the armature conductors induces a back EMF in the armature. EMF is denoted by E symbol.

How to calculate Back EMF of DC Generator given Flux using this online calculator? To use this online calculator for Back EMF of DC Generator given Flux, enter Back EMF Constant (K_e), Angular Speed (ω_s) & Flux per Pole (Φ_p) and hit the calculate button. Here is how the Back EMF of DC Generator given Flux calculation can be explained with given input values -> 14.3184 = 0.76*314*0.06.

FAQ

What is Back EMF of DC Generator given Flux?

Back EMF of DC Generator given Flux refers to the phenomenon armature rotates in a magnetic field created by the field winding, and the relative motion between the field and the armature conductors induces a back EMF in the armature and is represented as E = K_e*ω_s*Φ_p or EMF = Back EMF Constant*Angular Speed*Flux per Pole. Back EMF constant is ratio of back EMF to the motor speed, and is a useful parameter for designing and analyzing motor control systems, Angular speed is the rate of rotation about an axis, measuring how the angle changes with time. It is measured in radian/sec & Flux per Pole refers to the amount of magnetic flux produced by each individual pole of the generator field winding. It is an important parameter and affects the output voltage.

How to calculate Back EMF of DC Generator given Flux?

Back EMF of DC Generator given Flux refers to the phenomenon armature rotates in a magnetic field created by the field winding, and the relative motion between the field and the armature conductors induces a back EMF in the armature is calculated using EMF = Back EMF Constant*Angular Speed*Flux per Pole. To calculate Back EMF of DC Generator given Flux, you need Back EMF Constant (K_e), Angular Speed (ω_s) & Flux per Pole (Φ_p). With our tool, you need to enter the respective value for Back EMF Constant, Angular Speed & Flux per Pole and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate EMF?

In this formula, EMF uses Back EMF Constant, Angular Speed & Flux per Pole. We can use 2 other way(s) to calculate the same, which is/are as follows -

EMF = (Number of Poles*Rotor Speed*Flux per Pole*Number of Conductor)/120
EMF = (Rotor Speed*Flux per Pole*Number of Conductor)/60

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