FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Number of Damper Bars Formula

Fx Copy

LaTeX Copy

Number of Damper Bar provides starting torque necessary for starting the synchronous motor. It also prevents hunting of synchronous motor. Check FAQs

n d = \frac{θ}{0.8 \cdot Y s}

n_d - Number of Damper Bar?θ - Pole Arc?Y_s - Slot Pitch?

Number of Damper Bars Example

With values

With units

Only example

Here is how the Number of Damper Bars equation looks like with Values.

Here is how the Number of Damper Bars equation looks like with Units.

Here is how the Number of Damper Bars equation looks like.

10 = \frac{257.6}{0.8 \cdot 32.2}

10 = \frac{257.6m}{0.8 \cdot 32.2m}

10 = \frac{257.6}{0.8 \cdot 32.2}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Electrical » Category

Electrical Machine Design » fx Number of Damper Bars

Number of Damper Bars Solution

Follow our step by step solution on how to calculate Number of Damper Bars?

FIRST Step Consider the formula

n d = \frac{θ}{0.8 \cdot Y s}

Next Step Substitute values of Variables

∴

n d = \frac{257.6m}{0.8 \cdot 32.2m}

Next Step Prepare to Evaluate

∴

n d = \frac{257.6}{0.8 \cdot 32.2}

LAST Step Evaluate

∴

n d = 10

Number of Damper Bars Formula Elements

Variables

Number of Damper Bar

Number of Damper Bar provides starting torque necessary for starting the synchronous motor. It also prevents hunting of synchronous motor.

Symbol: n_d

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Number of Damper Bar

Pole Arc

Pole Arc is the distance measured on the circumference of the armature from the center of one pole to the center of the next pole.

Symbol: θ

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Pole Arc

Slot Pitch

Slot pitch is the distance between two adjacent slots. In dc machines, the slot pitch usually lies between 25 to 35 mm.

Symbol: Y_s

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Slot Pitch

Other formulas in Mechanical Parameters category

Go Armature Diameter using Output Equation

D a = \sqrt{\frac{P o}{C o(ac) \cdot 1000 \cdot N s \cdot L a}}

Go Armature Core Length using Output Equation

L a = \frac{P o}{C o(ac) \cdot 1000 \cdot {D a}^{2} \cdot N s}

Go Diameter of Damper Bar

D d = \sqrt{\frac{4 \cdot A d}{π}}

Go Cross Sectional Area of Damper Winding

σ d = \frac{A d}{n d}

How to Evaluate Number of Damper Bars?

Number of Damper Bars evaluator uses Number of Damper Bar = Pole Arc/(0.8*Slot Pitch) to evaluate the Number of Damper Bar, Number of Damper Bars provides starting torque necessary for starting the synchronous motor. It also prevents hunting of synchronous motor, that is it reduces oscillations of the rotor when the motor deviates from synchronism. Number of Damper Bar is denoted by n_d symbol.

How to evaluate Number of Damper Bars using this online evaluator? To use this online evaluator for Number of Damper Bars, enter Pole Arc (θ) & Slot Pitch (Y_s) and hit the calculate button.

FAQs on Number of Damper Bars

What is the formula to find Number of Damper Bars?

The formula of Number of Damper Bars is expressed as Number of Damper Bar = Pole Arc/(0.8*Slot Pitch). Here is an example- 10 = 257.6/(0.8*32.2).

How to calculate Number of Damper Bars?

With Pole Arc (θ) & Slot Pitch (Y_s) we can find Number of Damper Bars using the formula - Number of Damper Bar = Pole Arc/(0.8*Slot Pitch).

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit

Number of Damper Bars Formula

Number of Damper Bars Example

Number of Damper Bars Solution

Number of Damper Bars Formula Elements

Other formulas in Mechanical Parameters category

How to Evaluate Number of Damper Bars?

FAQs on Number of Damper Bars

Variable Name