How to calculate power loss due to eddy currents

Thread starter Orlando
Start date Apr 23, 2011
Tags

Currents Eddy currents Loss Power Power loss

In summary, eddy currents are created when a conductor is exposed to a changing magnetic field, and the power loss due to these currents is affected by multiple factors such as material properties, frequency, and field strength. The power loss can be calculated using a formula, and eddy currents can be reduced by using laminated materials. In practical applications, the effects of eddy currents can be minimized by using low conductivity materials, reducing conductor thickness, using shielding materials, and optimizing circuit or device design.

Apr 23, 2011

Orlando

Homework Statement

What equation do i use to calculate the power loss due to eddy currents? I can't find an equation anywhere online.

Physics news on Phys.org

Apr 23, 2011

rock.freak667

Homework Helper

I would think you would use P = I²R given the current and the resistance of the medium.

Related to How to calculate power loss due to eddy currents

1. How are eddy currents created?

Eddy currents are created when a conductor is exposed to a changing magnetic field. This can happen when the conductor is moving in a magnetic field, or when the magnetic field itself is changing.

2. What factors affect the power loss due to eddy currents?

The power loss due to eddy currents is affected by the material properties of the conductor, the frequency of the alternating current, the shape and size of the conductor, and the strength of the magnetic field.

3. How is power loss due to eddy currents calculated?

The power loss due to eddy currents can be calculated using the formula P = K * B^2 * f^2 * A^2 * t, where P is the power loss, K is a constant dependent on the material, B is the magnetic field strength, f is the frequency, A is the area of the conductor, and t is the thickness of the conductor.

4. Can eddy currents be reduced or eliminated?

Yes, eddy currents can be reduced or eliminated by using laminated materials, which are made up of thin layers of conductors separated by insulating material. This prevents the flow of eddy currents and reduces the power loss.

5. How can the effects of eddy currents be minimized in practical applications?

The effects of eddy currents can be minimized in practical applications by using materials with low electrical conductivity, reducing the thickness of the conductor, and using shielding materials to redirect the magnetic field. Additionally, the design of the circuit or device can be optimized to minimize the effects of eddy currents.