The losses due to hysteresis and eddy currents in the magnetic core are known as what?

The losses due to hysteresis and eddy currents in the magnetic core are known as what?

• A. Iron losses
• B. Copper losses
• C. Dielectric losses
• D. Radiation losses

Answer: (A)

The main idea is that some losses happen inside the magnetic core material itself when it is subjected to changing magnetic fields. These losses come from two phenomena: hysteresis loss, which is the energy dissipated as magnetic domains realign with each cycle of the applied field, and eddy current loss, which arises from circulating currents induced within the conducting core by the changing flux. Together, these core-related losses are known as iron losses. They are different from copper losses, which occur in the windings due to their resistance; dielectric losses, which occur in insulating materials; and radiation losses, which are energy emitted as EM waves. Using laminated or high-permeability, low-hysteresis materials helps reduce iron losses by interrupting eddy currents and minimizing hysteresis, respectively.

The main idea is that some losses happen inside the magnetic core material itself when it is subjected to changing magnetic fields. These losses come from two phenomena: hysteresis loss, which is the energy dissipated as magnetic domains realign with each cycle of the applied field, and eddy current loss, which arises from circulating currents induced within the conducting core by the changing flux. Together, these core-related losses are known as iron losses. They are different from copper losses, which occur in the windings due to their resistance; dielectric losses, which occur in insulating materials; and radiation losses, which are energy emitted as EM waves. Using laminated or high-permeability, low-hysteresis materials helps reduce iron losses by interrupting eddy currents and minimizing hysteresis, respectively.