When the temperature of each part of the high-frequency transformer exceeds its allowable range for a long time, the insulation of the high-frequency transformer will be easily damaged, which can easily cause high-frequency transformer failure or accident.
So what are the reasons for the high-frequency transformer temperature rise? Basically, it can be divided into two reasons:
Excessive heat generation and slow heat dissipation.
First off, let’s talk about why things get too hot. There are a bunch of reasons for this. For example, when the coils in the transformer get all tangled up and cause a short circuit. This happens when the insulation gets old or damaged, and it creates a loop that makes a lot of heat because of something called eddy currents.
Another reason could be that part of the core gets too hot. This happens when there’s damage from outside forces or if the insulation on the core is getting old and worn out. When this happens, it causes more eddy currents and makes that part of the transformer heat up.
It could also be because some parts aren’t connecting properly, or there were mistakes made in how it was designed which leads to too much copper and iron loss inside.
Iron loss happens because of hysteresis (which is just a fancy way to say that energy gets lost as heat) and eddy current loss in the material used for the transformer core. When there’s lots of magnetic force happening in one spot on the core, it causes more iron loss which means higher temperatures.
Copper loss is another thing to watch out for – it happens when electricity has to pass through copper wire with resistance. If there’s high frequency or lots of electricity going through, then you’ll see more copper loss which means even hotter temperatures.
And finally, sometimes things just can’t cool down fast enough. Maybe it’s really hot outside or maybe air isn’t flowing around like it should be so that heat can escape from the transformer properly.
When this happens, your high-frequency transformer won’t be able to cool down like normal which will make its temperature keep going up and up until eventually something bad might happen – even someone getting hurt!
So what should be done if the high-frequency transformer is overheated?
If it is caused by excessive heat generation, it depends on the situation to choose the appropriate skeleton and core, replace the winding with damaged insulation, and choose the appropriate air gap size to ensure that the heat generation can be reduced.
In addition, there are also ways to reduce heat generation by changing the type of winding wire, such as Ritz wire, copper foil, etc., or by dispersing a single transformer into a combination of multiple transformers, which can easily reduce the heat generation of the transformer.
In terms of heat dissipation, keep ventilation and air permeability. If conditions permit, use a radiator, fan or other cooling methods to ensure proper heat dissipation and temperature regulation.
If the high-frequency transformer radiator is seriously dusty, it is necessary to shut down the transformer and clean the transformer radiator with water.
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Thanks for reading, and have a great day!”
Post time: Jul-18-2024