Efficiency in centralized DC systems compared with distributed DC systems in photovoltaic energy conversion

Creative Commons License

Ozcelik M. A., Yilmaz A. S., KÜÇÜK S., Bayrak M.

Elektronika ir Elektrotechnika, cilt.21, sa.6, ss.51-56, 2015 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 21 Sayı: 6
  • Basım Tarihi: 2015
  • Doi Numarası: 10.5755/j01.eee.21.6.13761
  • Dergi Adı: Elektronika ir Elektrotechnika
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.51-56
  • Anahtar Kelimeler: DC-DC power converters, Maximum power point tracking, P&O algorithm, Solar power generation
  • İstanbul Yeni Yüzyıl Üniversitesi Adresli: Hayır

Özet

Photovoltaic (PV) systems produce a significant amount of electrical energy used around the world. The performance of a PV array is affected by temperature, solar insolation, shading and array configuration. Obtainable maximum power generation from PV based energy production systems is only possible with Maximum Power Point Tracking (MPPT) methods. In order to maximize the efficiency of PV energy conversion systems, solar panels and arrays should be operated at maximum power points. At maximum power point, solar arrays generate the electric energy at maximum efficiency and minimum losses. This paper discusses the following issues: (1) what is the effect of MPPT unit in PV systems, (2) two connection methods between solar arrays and buck-boost DC/DC converter with MPPT unit, (3) determine behaviours of PV power generation systems in cloudy and sunny conditions.