Explanation

It is the energy consumed by ferromagnets due to hysteresis phenomenon in the process of repeated magnetize. Hysteresis means that when the magnetic state of a ferromagnetic materials changes, the magnetization lags behind the magnetic field strength, and there is a magnetic hysteresis relationship between its magnetic flux density B and magnetic field strength H. After one cycle, the magnetic hysteresis loss per unit volume of iron core is proportional to the area of magnetic hysteresis. This energy is converted into thermal energy, which heats up the equipment and reduces efficiency. It is a component of iron loss in electrical equipment, which is not expected in equipment such as AC motors. The magnetic hysteresis of soft magnetic materials is narrow, and its magnetic hysteresis loss is relatively small. Therefore, silicon steel sheets are widely used in motors, transformers, relays and other equipment.

Classification