Kuru Tip Transformatörlerin Dış Ortamlarda Kullanılabilmesi İçin Deneysel Ve Simülasyon Ile Termal Analizine Yeni Yaklaşım

Kuru tip transformatörlerin (KTT) yağlı tip transformatörlere göre avantajları göz önünde bulundurulduğunda, dış mekânlarda da kullanılabilir duruma getirilmesi bu çalışmanın esas amacını oluşturmaktadır. Bu noktadan yola çıkılarak ilk önce 1500 VA kuru tip transformatörün termal kamera ile çekirdek ve sargılarındaki sıcaklıklar ölçülmüştür. Böylelikle transformatörün çalışma sırasında ulaşabileceği en yüksek sıcaklık değeri elde edilmeye çalışılmıştır. Fiziksel model baz alınarak elde edilen tasarım değerleri ile Ansys programında tasarlanan KTT simüle edilmiş, çıkışın yüklü durumunda en yüksek sıcaklık değeri ile gerçek değer karşılaştırılarak simülasyon test edilmiştir. Daha sonra bu elde edilen sıcaklık değerine göre trafonun dış ortamlarda da kullanılabilmesi için bir mahfaza tasarlanmıştır. 1500 VA KTT’nin termal kamera test düzeneği ile ölçülen 129 ° C en sıcak nokta sıcaklık değerinin Ansys Fluent (Ansys Inc., Canonsburg, PA, ABD) ile simüle edilen tabi soğutmalı mahfaza içindeki sıcaklık ile aynı olduğu görülmüştür. KTT' nin zorlamalı soğutma alanındaki sıcaklığı, yaklaşık % 4,6 azalarak 123 ° C'ye düşürülmektedir. Bu şekilde tasarlanan yeni mahfaza, transformatörün dış mekânlarda kullanılabilirliğini sağlamakta ve elde edilen düşük sıcaklık KTT' nin kullanım ömrünü de artırmaktadır, dolayısıyla maliyetini de düşürmektedir.

Anahtar Kelimeler:

Kuru tip transformatör, termal analiz, faydalı ömür, en yüksek sıcaklık

EXPERIMENTAL AND SIMULATING OF DRY-TYPE TRANSFORMER THERMAL ANALYSIS WITH A NEW APPROACH FOR OUTDOOR APPLICATIONS

Since dry type transformers (DTT) has many advantages over the oily ones, this study focuses on the realibity, feasibility and cost of DTT to be used at outdoor applications. On this respect the core and winding temperatures of the 1500 VA DTT transformer model is measured by thermal camera The operational highest temperature of the transformer is obtained by this way. The DTT is simulated by ANSYS with the design parameters based On the physical model, and the simulation values and the real ones are compared to satisfy the procedure. Then in the light of simulation results, an outer cover is designed for outdoor applications which is the goal of the paper. The real hot spot temperature of the 1500 VA DTT is 129 ° C remains the same with the new cover simulation designed DTT that naturally cooled. Furthermore, the temperature of the new design DTT is reduced by about 4.6% to 123 ° C by forced cooling. So the new cover design not only provide to be used at outdoors applications, it also increases the lifetime of the device, and reduces the operation costs.

Keywords:

Dry-type transformer, thermal analysis, lifetime, hot spot temperature,

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