Field Coil Voltage Calculator

✖Field current determines the strength of the magnetic field that induces the voltage in the armature winding.ⓘ Field Current [I_f]			+10% -10%
✖Field resistance refers to the electrical resistance of the field winding or field coil in a machine such as a generator or motor.ⓘ Field Resistance [R_f]			+10% -10%

✖The field coil voltage refers to the voltage applied to the field winding or field coil of a rotating machine, such as a generator or motor.ⓘ Field Coil Voltage [E_f]

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Formula

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Field Coil Voltage

Formula

`"E"_{"f"} = "I"_{"f"}*"R"_{"f"}`

Example

`"42.4983V"="83.33A"*"0.51Ω"`

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Field Coil Voltage Solution

STEP 0: Pre-Calculation Summary

Formula Used

Field Coil Voltage = Field Current*Field Resistance
E_f = I_f*R_f
This formula uses 3 Variables

Variables Used

Field Coil Voltage - (Measured in Volt) - The field coil voltage refers to the voltage applied to the field winding or field coil of a rotating machine, such as a generator or motor.
Field Current - (Measured in Ampere) - Field current determines the strength of the magnetic field that induces the voltage in the armature winding.
Field Resistance - (Measured in Ohm) - Field resistance refers to the electrical resistance of the field winding or field coil in a machine such as a generator or motor.

STEP 1: Convert Input(s) to Base Unit

Field Current: 83.33 Ampere --> 83.33 Ampere No Conversion Required
Field Resistance: 0.51 Ohm --> 0.51 Ohm No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

E_f = I_f*R_f --> 83.33*0.51

Evaluating ... ...

E_f = 42.4983

STEP 3: Convert Result to Output's Unit

42.4983 Volt --> No Conversion Required

FINAL ANSWER

42.4983 Volt <-- Field Coil Voltage

(Calculation completed in 00.004 seconds)

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Home » Engineering » Electrical » Electrical Machine Design » AC Machines » Electrical Parameters » Field Coil Voltage

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Created by swapanshil kumar

ramgarh engineering college (REC), ramgarh

swapanshil kumar has created this Calculator and 25+ more calculators!

Verified by Parminder Singh

Chandigarh University (CU), Punjab

Parminder Singh has verified this Calculator and 600+ more calculators!

< 13 Electrical Parameters Calculators

Specific Electric Loading

Go Specific Electric Loading = (Armature Current*Number of Conductors)/(pi*Number of Parallel Paths*Armature Diameter)

Output Coefficient using Output Equation

Go Output Coefficient AC = Output Power/(Armature Core Length*Armature Diameter^2*Synchronous Speed*1000)

Synchronous Speed using Output Equation

Go Synchronous Speed = Output Power/(Output Coefficient AC*1000*Armature Diameter^2*Armature Core Length)

Output Power of Synchronous Machine

Go Output Power = Output Coefficient AC*1000*Armature Diameter^2*Armature Core Length*Synchronous Speed

Field Resistance

Go Field Resistance = (Turns per Coil*Resistivity*Length of Mean Turn)/Area of Field Conductor

Specific Electric Loading using Output Coefficient AC

Go Specific Electric Loading = (Output Coefficient AC*1000)/(11*Specific Magnetic Loading*Winding Factor)

Winding Factor using Output Coefficient AC

Go Winding Factor = (Output Coefficient AC*1000)/(11*Specific Magnetic Loading*Specific Electric Loading)

Current per Phase

Go Current per Phase = (Apparent Power*1000)/(Induced Emf per Phase*3)

Current in Conductor

Go Current in Conductor = Current per Phase/Number of Parallel Paths

Field Coil Voltage

Go Field Coil Voltage = Field Current*Field Resistance

Field Current

Go Field Current = Field Coil Voltage/Field Resistance

Apparent Power

Go Apparent Power = Rated Real Power/Power Factor

Short Circuit Ratio

Go Short Circuit Ratio = 1/Synchronous Reactance

Field Coil Voltage Formula

Field Coil Voltage = Field Current*Field Resistance
E_f = I_f*R_f

What is the purpose of the field coil?

A field coil is an electromagnet used to generate a magnetic field in an electro-magnetic machine, typically a rotating electrical machine such as a motor or generator. It consists of a coil of wire through which a current flows.

What is the purpose of field coils in a DC machine?

In a DC motor they provide the magnetic field which the armature reacts against in order for the armature to spin. In a generator, the field coil can either be on the rotating part of the electrical machine (the rotor) or the stationary part (the stator).

How to Calculate Field Coil Voltage?

Field Coil Voltage calculator uses Field Coil Voltage = Field Current*Field Resistance to calculate the Field Coil Voltage, Field coil voltage is the product of field current and resistance of each field coil at 75 °C. It depicts the voltage across each field coil. The field coil voltage formula is used to calculate the voltage required for the field coil of an electrical machine, such as a generator or motor. The field coil is responsible for creating the magnetic field necessary for the operation of the machine. The formula can be derived from the desired magnetic field strength and the design parameters of the machine. Field Coil Voltage is denoted by E_f symbol.

How to calculate Field Coil Voltage using this online calculator? To use this online calculator for Field Coil Voltage, enter Field Current (I_f) & Field Resistance (R_f) and hit the calculate button. Here is how the Field Coil Voltage calculation can be explained with given input values -> 42.4983 = 83.33*0.51.

FAQ

What is Field Coil Voltage?

Field coil voltage is the product of field current and resistance of each field coil at 75 °C. It depicts the voltage across each field coil. The field coil voltage formula is used to calculate the voltage required for the field coil of an electrical machine, such as a generator or motor. The field coil is responsible for creating the magnetic field necessary for the operation of the machine. The formula can be derived from the desired magnetic field strength and the design parameters of the machine and is represented as E_f = I_f*R_f or Field Coil Voltage = Field Current*Field Resistance. Field current determines the strength of the magnetic field that induces the voltage in the armature winding & Field resistance refers to the electrical resistance of the field winding or field coil in a machine such as a generator or motor.

How to calculate Field Coil Voltage?

Field coil voltage is the product of field current and resistance of each field coil at 75 °C. It depicts the voltage across each field coil. The field coil voltage formula is used to calculate the voltage required for the field coil of an electrical machine, such as a generator or motor. The field coil is responsible for creating the magnetic field necessary for the operation of the machine. The formula can be derived from the desired magnetic field strength and the design parameters of the machine is calculated using Field Coil Voltage = Field Current*Field Resistance. To calculate Field Coil Voltage, you need Field Current (I_f) & Field Resistance (R_f). With our tool, you need to enter the respective value for Field Current & Field Resistance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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