Review of Grid-Connected Solar PV Systems With Decoupled Control

Year 2024, Volume: 5 Issue: 2, 135 - 147

Abdulkadir Özcan , Ahmed Saadoon Mahmood Algburi , Omar Ali Khaleel , Hanaa Hussein Lafta

https://doi.org/10.53525/jster.1533727

Abstract

This paper presents a decoupled control for grid-connected solar photovoltaic (PV) system. The control framework used in this paper aims not to track the changing maximum power point (MPP) for extracting power at MPP, hence blocking the MPP tracking issue against the effect of solar radiation and temperature. Real power is produced by tracking the control voltage with a zero-dynamics-based controller. A cascaded loop controller with inner loop to regulate the control voltage is incorporated to ensure the produced real power follows the reference power in the presence of power disturbance. The proposed control scheme with the consideration of the inverter's rated voltage shows improved system dynamics. Simulations in various conditions are conducted to prove the effectiveness of the proposed control strategies. CIGRE 13-node benchmark system is used as the case study to evaluate the results of the PV system connected to a more complex power system. It has been shown that the proposed controller allows the total production of the energy under maximum power point conditions and also improves the overall stability of distributed generation connected to the grid. Therefore, it can be implemented to increase the capacity of renewable inverter-based power generation and the power system quality.

Keywords

solar power, power generation, solar energy, decoupled control

Review of Grid-Connected Solar PV Systems With Decoupled Control

Abstract

Bu makale şebekeye bağlı güneş fotovoltaik (PV) sistemi için ayrıştırılmış bir kontrol sunmaktadır. Bu makalede kullanılan kontrol çerçevesi, MPP'de güç çıkarmak için değişen maksimum güç noktasını (MPP) izlememeyi ve dolayısıyla güneş radyasyonu ve sıcaklığın etkisine karşı MPP izleme sorununu engellemeyi amaçlamaktadır. Gerçek güç, sıfır dinamik tabanlı bir kontrolörle kontrol voltajının izlenmesiyle üretilir Güç bozulması durumunda üretilen gerçek gücün referans gücü takip etmesini sağlamak için kontrol voltajını düzenleyen iç döngüye sahip bir kademeli döngü denetleyicisi dahil edilmiştir İnverterin anma geriliminin dikkate alındığı önerilen kontrol şeması, sistem dinamiklerinde iyileşme göstermektedir Önerilen kontrol stratejilerinin etkinliğini kanıtlamak için çeşitli koşullarda simülasyonlar yürütülür. CIGRE 13 düğümlü kıyaslama sistemi, daha karmaşık bir güç sistemine bağlı PV sisteminin sonuçlarını değerlendirmek için vaka çalışması olarak kullanılır. Önerilen kontrolörün, maksimum güç noktası koşulları altında toplam enerji üretimine izin verdiği ve ayrıca şebekeye bağlı dağıtılmış üretimin genel kararlılığını iyileştirdiği gösterilmiştir Bu nedenle yenilenebilir enerji kaynaklı invertör tabanlı güç üretim kapasitesinin ve güç sistemi kalitesinin artırılması için uygulanabilir.

Keywords

güneş enerjisi, güç üretimi, güneş enerjisi, ayrık kontrol

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