In addition to copper loss, how many iron losses does an iron core conductor have?

An iron core conductor indeed experiences two main types of iron losses. These are significant factors in defining the efficiency of transformers and magnetic circuits. The two types of iron losses are hysteresis loss and eddy current loss.

Hysteresis loss occurs due to the magnetic properties of the core material. When the magnetic field inside the core is continuously changed, the magnetic particles in the core material lag behind the change in the applied magnetic field, causing energy to be lost as heat. This loss is influenced by the frequency of the magnetic cycles and the material used for the core.

Eddy current loss, on the other hand, is caused by currents induced within the conductive core material when it is exposed to a changing magnetic field. These currents flow in loops perpendicular to the magnetic field and result in heating of the material, leading to energy losses. To mitigate eddy current losses, core materials are often laminated to restrict the path of these currents.

Identifying and understanding these two types of iron losses is crucial for engineers and designers working with electrical machines, as they play a significant role in the overall efficiency and performance of the equipment.