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Rotor Copper Loss in Induction Motor Formula

GoRotor Copper Loss given Input Rotor Power Formula

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The rotor copper loss is the value that you get while subtracting the stator copper loss from the total measured loss. Check FAQs

P r(cu) = 3 \cdot {I r}^{2} \cdot R r

P_r(cu) - Rotor Copper Loss?I_r - Rotor Current?R_r - Rotor Resistance?

Rotor Copper Loss in Induction Motor Example

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Here is how the Rotor Copper Loss in Induction Motor equation looks like with Values.

Here is how the Rotor Copper Loss in Induction Motor equation looks like with Units.

Here is how the Rotor Copper Loss in Induction Motor equation looks like.

1.5595 = 3 \cdot {0.285}^{2} \cdot 6.4

1.5595W = 3 \cdot {0.285A}^{2} \cdot 6.4Ω

1.5595 = 3 \cdot {0.285}^{2} \cdot 6.4

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Rotor Copper Loss in Induction Motor Solution

Follow our step by step solution on how to calculate Rotor Copper Loss in Induction Motor?

FIRST Step Consider the formula

P r(cu) = 3 \cdot {I r}^{2} \cdot R r

Next Step Substitute values of Variables

∴

P r(cu) = 3 \cdot {0.285A}^{2} \cdot 6.4Ω

Next Step Prepare to Evaluate

∴

P r(cu) = 3 \cdot {0.285}^{2} \cdot 6.4

Next Step Evaluate

∴

P r(cu) = 1.55952W

LAST Step Rounding Answer

∴

P r(cu) = 1.5595W

Rotor Copper Loss in Induction Motor Formula Elements

Variables

Rotor Copper Loss

The rotor copper loss is the value that you get while subtracting the stator copper loss from the total measured loss.

Symbol: P_r(cu)

Measurement: PowerUnit: W

Note: Value can be positive or negative.

Formulas to find Rotor Copper Loss

Rotor Current

Rotor current refers to the flow of electric current in the rotor of an electric machine, such as an electric motor or generator.

Symbol: I_r

Measurement: Electric CurrentUnit: A

Note: Value should be greater than 0.

Formulas to find Rotor Current

Rotor Resistance

Rotor resistance per phase the resistance of the AC induction motor rotor.

Symbol: R_r

Measurement: Electric ResistanceUnit: Ω

Note: Value can be positive or negative.

Formulas to find Rotor Resistance

Other Formulas to find Rotor Copper Loss

Go Rotor Copper Loss given Input Rotor Power

P r(cu) = s \cdot P in(r)

Other formulas in Losses category

Go Armature Current given Power in Induction Motor

I a = \frac{P out}{V a}

Go Field Current using Load Current in Induction Motor

I f = I a - I L

Go Load Current in Induction Motor

I L = I a - I f

Go Rotor Current in Induction Motor

I r = \frac{s \cdot E i}{\sqrt{{R r(ph)}^{2} + {(s \cdot X r(ph))}^{2}}}

How to Evaluate Rotor Copper Loss in Induction Motor?

Rotor Copper Loss in Induction Motor evaluator uses Rotor Copper Loss = 3*Rotor Current^2*Rotor Resistance to evaluate the Rotor Copper Loss, The Rotor Copper Loss in Induction Motor formula is defined as rotor copper loss refers to the energy dissipated as heat in the rotor due to the flow of current through its copper conductors. Rotor Copper Loss is denoted by P_r(cu) symbol.

How to evaluate Rotor Copper Loss in Induction Motor using this online evaluator? To use this online evaluator for Rotor Copper Loss in Induction Motor, enter Rotor Current (I_r) & Rotor Resistance (R_r) and hit the calculate button.

FAQs on Rotor Copper Loss in Induction Motor

What is the formula to find Rotor Copper Loss in Induction Motor?

The formula of Rotor Copper Loss in Induction Motor is expressed as Rotor Copper Loss = 3*Rotor Current^2*Rotor Resistance. Here is an example- 1.55952 = 3*0.285^2*6.4.

How to calculate Rotor Copper Loss in Induction Motor?

With Rotor Current (I_r) & Rotor Resistance (R_r) we can find Rotor Copper Loss in Induction Motor using the formula - Rotor Copper Loss = 3*Rotor Current^2*Rotor Resistance.

What are the other ways to Calculate Rotor Copper Loss?

Here are the different ways to Calculate Rotor Copper Loss-

Rotor Copper Loss=Slip*Rotor Input Power

Can the Rotor Copper Loss in Induction Motor be negative?

Yes, the Rotor Copper Loss in Induction Motor, measured in Power can be negative.

Which unit is used to measure Rotor Copper Loss in Induction Motor?

Rotor Copper Loss in Induction Motor is usually measured using the Watt[W] for Power. Kilowatt[W], Milliwatt[W], Microwatt[W] are the few other units in which Rotor Copper Loss in Induction Motor can be measured.

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