The losses of transformers consist of two parts:Iron loss and copper loss.
Iron loss is occurred by the transformer core.The iron loss is confirmed as soon as the transformer is finished.So it is also called fixed loss.
Here are the ways to reduce to iron loss as below:
1. Using high-quality cold rolled silicon steel sheet (like Z11) as the raw material of transformer core to increase the permeability and reduce the hysteresis.
2. Using thinner core material to reduce eddy-current loss.
Copper loss refers to the current loss in the winding coil. It is related to the transformer load. Bigger transformer load , the bigger copper loss is.
Here are the ways to reduce the copper loss as below:
1. Using copper wire with a bigger diameter.
2. Choosing lower density of current.
3. Using high strength enameled wire to increase the cross-sectional area of the leads.
However, it doesn’t mean that the lower copper loss the better. Because while in a low copper loss, it means that transformer load is low too and the iron loss remains, the loss rate of transformer will be very high on the contrary.
Therefore, the way to make the transformer most effective is to reduce the copper loss to the iron loss until they are equal.
1. According to the heat dissipation standard of each heat pipe, the proportion of copper and iron loss should be effectively distributed.
2. Don’t make the transformers run and overload for long to avoid the rising temperature and resulting in bigger losses.