What are the characteristics of using flat winding for transformers? (Part 2)

In the previous article, we introduced the advantages of flat winding. However, compared with vertical winding, flat winding also has some disadvantages, which will be explained one by one below.

Content

●Low space utilization
The flat winding method occupies a large space in the horizontal direction. For some application scenarios with limited space, it may be restricted. Compared with vertical winding, it is difficult for flat winding to achieve a higher number of winding turns in the same space, which may affect the voltage transformation ability of the transformer. For example, in some compact electronic devices, flat winding transformers may require a larger installation space, which is not conducive to the miniaturization design of the equipment.

●Poor heat dissipation performance
The coils of flat winding are arranged in the horizontal direction, and heat dissipation is relatively difficult. Especially when operating at high power, heat is easily accumulated inside the winding, leading to an increase in temperature. This may affect the reliability and service life of the transformer. To improve the heat dissipation performance, additional heat dissipation measures need to be added, such as installing heat sinks or using forced air cooling, which increases cost and complexity.

●Relatively large parasitic capacitance
In high-frequency applications, the parasitic capacitance between the coils of the flat winding method is relatively large. This will affect the high-frequency performance of the transformer, leading to signal distortion and energy loss. Compared with vertical winding, the coil structure of flat winding makes the distance between adjacent coils relatively small, increasing the influence of parasitic capacitance.

In Summary

In conclusion, using flat winding for transformer windings has advantages such as simple winding process, easy insulation treatment, and high mechanical strength, but there are also disadvantages such as low space utilization, poor heat dissipation performance, and large parasitic capacitance. In practical applications, according to specific needs and conditions, the advantages and disadvantages of flat winding should be comprehensively considered to select an appropriate winding method to ensure the performance, quality, and reliability of the transformer.

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