What is iron loss? What impact does it have on steel? Why iron loss required?
Hysteresis loss refers to magnetic material as magnetic medium, intrinsic loss in certain excitation magnetic field; (in the loss of power generated by the energy conversion process); eddy current loss refers to the occurrence of alternating magnetic flux, the iron induced electromotive force and the induced current, the induced current was swirling, called eddy in the core; the resistance induction current loss is eddy current loss; residual loss refers to the loss in addition to hysteresis loss and eddy current loss, due to the small proportion, also can be ignored.
When the primary winding of the transformer is energized, the flux produced by the coil flows in the core. Because the core itself is also a conductor, it induces an electric potential on the plane perpendicular to the line of force, which creates a closed loop and produces an electric current on the cross section of the core. It's like a vortex, so it's called "vortex"". This "eddy current" increases the loss of the transformer and causes the core of the transformer to be heated and the temperature rise of the transformer increases. The losses caused by eddy currents are called iron losses". In addition, a lot of copper wire is needed to winding the transformer. There is resistance in these copper wires. When the current flows through, these resistors will consume a certain amount of power. This part of the loss often turns into heat and consumes. We call this loss "copper loss"". Therefore, the temperature rise of the transformer is mainly caused by iron loss and copper loss. Since the transformer has iron loss and copper loss, its output power is always less than the input power. Defects such as manufacturing process defects and aging of inter chip insulation can be found to avoid unnecessary damage.
General requirements for silicon steel and other electrical steelThe influence is: the stator iron loss test, found iron loss is not qualified. Test analysis after insulation material loss and chemical composition, the stator iron core silicon steel sheet, film thickness of silicon steel sheet is found due to the insufficient laminated insulation failure, resulting in unqualified iron loss test of silicon steel sheet. Split laminated to motor factory to add coating after problems have been solved.
Iron loss (Iron, Loss): iron losses include hysteresis losses and eddy current losses of magnetic materials, and residual losses of W/kg (w / kg)
