Transformer Loss

When the primary winding of the transformer is energized, the magnetic flux generated by the coil flows in the iron core. Because the iron core itself is also a conductor, an electric potential will be induced in the plane perpendicular to the magnetic line of force. This electric potential forms a closed loop on the cross section of the iron core. The electric current is generated, like p a vortex, so it is called "eddy current". This "eddy current" increases the loss of the transformer and increases the temperature rise of the transformer's core heating transformer. The loss caused by "eddy current" is called "iron loss". In addition, a large amount of copper wire is needed to wind the transformer. These copper wires have resistance. When current flows through this resistance will consume a certain amount of power. This part of the loss is often consumed as heat. 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