Koray Şener PARLAK, Mehmet Timur AYDEMİR, Mehmet ÖZDEMİR

Eviricilerden oluşan dağınık güç sistemi

Bu çalışmada, iki kesintisiz güç kaynağından oluşan dağınık yapılı bir güç sistemi incelenmiştir. Çalışma, güç kaynaklarının çıkış katındaki eviricilerin paralel çalışması üzerine yoğunlaştırılmıştır. Kaynakların paralel çalışmasıyla bir yandan sistemin kurulu gücü arttırılırken, bir yandan da herhangi bir eviricide oluşabilecek arıza durumunda diğer evirici sistemin güç talebini karşılayabilmektedir. Uygulanan denetim yöntemleriyle sistemin toplam yükü eviriciler arasında paylaştırılmıştır. Böylece eviriciler sistemin yük durumuna göre optimum bir güç seviyesinde çalışacağından, zorlanmadan kaynaklanan arıza veya kayıplar önlenmiş olur. Paralel çalıştırmada ve yük paylaşımı algoritmalarında herhangi bir haberleşme hattı kullanılmamaktadır. Yapılan benzetim çalışmaları önerilen denetim yönteminin işlerliğini ve sistemin güvenli bir şekilde çalışması açısından önemli avantajlar sağladığını göstermektedir.

Distributed power system consisting of inverters

A distributed power system consisting of two uninterruptible power supplies (UPS) is investigated in this paper. The investigation is concentrated on the parallel operation of the inverters at the output of the supplies. Parallel operation of sources increases the established power of the system while also increasing the reliability as one source still continues to function even when one of the inverters has a fault. Therefore, inverters operate at the optimal power level, and faults due to over loading are prevented. No communication line is used in parallel operation and load sharing. Simulation studies show that the suggested control algorithm works and provide important advantages for a reliable operation.

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