What Rattler means?
What Rattler means?
1 : one that rattles. 2 : rattlesnake.
What causes eddy current loss?
Eddy current loss is conductive I2R loss produced by circulating currents induced in response to AC flux linkage, flowing against the internal resistance of the core.
What are the disadvantages of eddy currents?
Disadvantages of Eddy Currents: There is a major heat loss during cycling eddy currents due to friction in the magnetic circuit, especially where the core is saturated. Thus there is the loss of useful electrical energy in the form of heat. There is magnetic flux leakage.
Why is it called eddy current?
Eddy currents are named so because the current looks like eddies or whirlpools. When a conductor is placed in the changing magnetic field, the induced current in the conductor is termed as Eddy currents.
How can we reduce eddy current?
We can minimise the eddy current by the following methods:
- The resistance of the core should be increased, to reduce the eddy current loss.
- In transformers, the thin sheets of steel in the core should be insulated from each other by a thin layer of varnish.
Is eddy current used in transformer?
In a transformer, the magnetic flux created by the primary coil induces a current in the core. The currents flowing in the core are called eddy currents.
What is the difference between eddy current loss and hysteresis loss?
The most significant difference between the Eddy current and Hysteresis loss is that the eddy current loss occurs because of the relative motion between the conductor and the magnetic field. Whereas the hysteresis loss occurs because of the reversal of the magnetism.
What are hysteresis losses?
Hysteresis loss is caused by the magnetization and demagnetization of the core as current flows in the forward and reverse directions. A hysteresis loop shows the relationship between the induced magnetic flux density (B) and the magnetizing force (H). It is often referred to as the B-H loop.
What is eddy current damping?
When a conductive material is subjected to a time-varying magnetic flux, eddy currents are generated in the conductor. As the eddy currents are dissipated, energy is removed from the system, thus producing a damp- ing effect.