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To calculate the flux density in the stator core of an electric machine, such as an alternating current (AC) motor or generator, you use the formula:
[ B = frac{Phi}{A} ]
Where:
– ( B ) is the magnetic flux density in Tesla (T)
– ( Phi ) is the magnetic flux in Webers (Wb)
– ( A ) is the cross-sectional area of the stator core in meters squared ((m^2))
The magnetic flux ((Phi)) represents the quantity of magnetism, taking account of the strength and the extent of the magnetic field. The cross-sectional area ((A)) is considered in the plane perpendicular to the direction of the magnetic flux.
In practical applications, the determination of (B) helps in understanding the performance and efficiency of electric machines and in ensuring that the core material is operated within its magnetic saturation limit to prevent excessive heat generation and losses.
c
Explanation: The maximum flux, length of iron and depth of stator core is calculated. On
substitution it provides the flux density in stator core.