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How to reduce the temperature rise of power frequency power transformer?

How to reduce the temperature rise of power frequency power transformer?

  • Categories:FAQ
  • Author:
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  • Time of issue:2022-03-14
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(Summary description)The temperature rise of transformer is directly proportional to its loss. Transformer loss includes core loss and coil copper loss. Reducing the working magnetic induction intensity of core and selecting low loss core materials are the main means to reduce core loss.

How to reduce the temperature rise of power frequency power transformer?

(Summary description)The temperature rise of transformer is directly proportional to its loss. Transformer loss includes core loss and coil copper loss. Reducing the working magnetic induction intensity of core and selecting low loss core materials are the main means to reduce core loss.

  • Categories:FAQ
  • Author:
  • Origin:
  • Time of issue:2022-03-14
  • Views:0
Information

(1) Reduce transformer loss

The temperature rise of transformer is directly proportional to its loss. Transformer loss includes core loss and coil copper loss. Reducing the working magnetic induction intensity of core and selecting low loss core materials are the main means to reduce core loss. Reducing the current density of the coil and increasing the duty cycle of copper in the core window are the main means to reduce the copper loss of the coil. However, these measures are related to the volume and cost of the transformer.

The copper and iron loss ratio of transformer is related to the technical and economic indexes and temperature rise of transformer. Properly adjusting the copper and iron loss ratio of the transformer can optimize the technical and economic indexes and temperature appreciation of the transformer.

(2) Heat dissipation capacity of transformer

The heat dissipation of transformer includes conduction, radiation and convection. Increasing the contact area between the transformer and the mounting base plate, especially the contact area between the iron core and the mounting base plate, is an effective means to increase the conduction and heat dissipation of the transformer. Coating black paint on the surface of the transformer can increase the heat radiation capacity of the transformer surface. Opening air channels between iron cores or coils can increase the convective heat dissipation of iron cores and coils. These measures can reduce the temperature rise of the transformer. The temperature appreciation reaches the best. The temperature rise of transformer is directly proportional to its loss. Transformer loss includes core loss and coil copper loss. Reducing the working magnetic induction intensity of core and selecting low loss core materials are the main means to reduce core loss. Reducing the current density of the coil and increasing the duty cycle of copper in the core window are the main means to reduce the copper loss of the coil. However, these measures are related to the volume and cost of the transformer.

The copper and iron loss ratio of transformer is related to the technical and economic indexes and temperature rise of transformer. Properly adjusting the copper and iron loss ratio of the transformer can optimize the technical and economic indexes and temperature appreciation of the transformer.

(3) Increase the heat dissipation area of transformer coil and core

The larger the heat dissipation area of transformer coil and core, the lower the temperature rise of transformer. The heat dissipation area can be increased and the temperature rise can be reduced by adding a heat sink to the iron core and increasing the coil area.

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