Value Of Fulx Density In Machine Design

1.2 tesla

Hi, Coolyaar,

It's not as simple as it seems from your questions and suggested answer.
First, it is not clear what the flux density you're thinking (air-gap, back-iron, tooth ..)?

All values ​​of flux density that you take in the calculation, strongly depend on many factors such as: the core dimensions (ie power), iron core characteristics, the number of poles, frequency, duty cycles, voltage (low or high), number of speeds, etc. .. For each combination of these factors, you must specify the lower and upper limit of flux density (each of all three). Several examples of these calculations can be found here. But if it is about only one motor that you want to calculate, then I can make a calculation for you if you send the required input data.

Zlatkodo

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Mushtaq Hussain-INDIA

15 kilogauss is a reasonable flux density for transformers operating at 60 hertz using 0.014 inch thick silicon steel.
If transformer audible noise is a problem, use a lower flux density.
If transformer noise is not a problem a higher flux density can be used.

If there is a specification on the transformer noise or core loss then the flux density has to be low enough to meet the specification.

If you are designing a transformer and there is no specification, use 15 kilogauss.
Transformer designed for 15 kilogauss should operate satisfactorily at 10% above designed voltage.