Yenilenebilir Enerji Kaynaklarına Sahip Bir Evin Talep Karakteristiğine Uygun Bir İnverter Tasarımının İncelenmesi

Yıl 2020, Cilt: 23 Sayı: 2, 257 - 265, 01.06.2020

Ugur Savaş Selamoğulları

https://doi.org/10.2339/politeknik.521345

Cited By: 1

Öz

Dünyamızın artan enerji gereksinimi
yenilenebilir enerji kaynaklarına olan ilgiyi artırmıştır. Özellikle, güneş ve
rüzgar enerjili güç sistemleri şebekeden bağımsız/şebeke bağlantılı evsel
uygulamalarda yaygın olarak kullanılmaya başlanmıştır. Yenilenebilir enerji
kaynaklarına sahip bir evde ihtiyaç duyulan sabit genlik ve frekansa sahip AC gerilimin
elde edilmesinde bir evirici (inverter) devre kullanılmaktadır. Bir evin
elektrik güç kullanımına ait ölçüm verisi incelendiğinde ev elektrik talebinin
gün boyunca değişken olduğu ve büyük bir oranda düşük güçlerde kaldığı görülmüştür.
Bu yüzden, böyle bir ev için inverter devresinin özellikle düşük güç
bölgesindeki verimin iyileştirilmesi gereklidir. Bu çalışmada, inverter devresinde
kullanılan LC filtre devresinde bulunan indüktör değerinin yük akımına göre değişken
olmasının inverter devresinin verimi üzerine etkisi incelenmiştir. Kullanılan
yöntemle inverter devresinden çekilen akımdaki dalgalanmanın düşürülebildiği ve
inverter devresinin düşük güçlerdeki veriminin büyük oranda iyileştirilebildiği
gösterilmiştir. Daha verimli bir inverter devresi ile yenilenebilir enerji
kaynaklarından elde edilen enerji daha etkin bir şekilde kullanılabilecektir. 

Anahtar Kelimeler

Yenilenebilir enerji, inverter tasarımı, evsel elektrik güç talebi, verim artışı, değişken filtre indüktansı

Analysis of a Power Inverter Design Considering The Demand Characteristics of a House With Renewable Energy Sources

Öz

Increasing energy demand in the world has shifted
the interest to renewable energy sources. Specifically, solar and wind power
systems for both grid connected and stand-alone homes have become a widespread
application. An inverter is used to obtain AC voltage with fixed amplitude and
frequency in a renewable energy supplied residential house. When measured
residential electrical power demand data is analyzed, it is seen that the demand
varies within a wide range during a day and stays at low power levels most of
the day. Thus, the light load efficiency of inverter circuit must be improved
for residential applications. In this study, the effect of variable inductor use-with
reference to the load current- at the inverter LC filter circuit on the
inverter light load efficiency is investigated. It is shown that the inverter
light load efficiency can be considerably improved due to the reduction of
current ripple drawn from the inverter. With more efficient inverter design,
the energy from renewable sources can be utilized more efficiently. 

Anahtar Kelimeler

Renewable energy, inverter design, residential electrical power demand, efficiency improvement, variable filter inductance

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