A modified energy management scheme to support phase balancing in grid interfaced photovoltaic/fuel cell system
| Autor: | Mehmet Selim Aygen, Mustafa Inci |
|---|---|
| Přispěvatelé: | Mühendislik ve Doğa Bilimleri Fakültesi -- Mekatronik Mühendisliği Bölümü, İnci, Mustafa |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Power flow controls
Energy management Computer science 020209 energy Zero sequence components Phase (waves) Electric load flow Unbalanced loads 02 engineering and technology Units of energy Electric inverters Electric power transmission networks Control theory 0202 electrical engineering electronic engineering information engineering Powerpoint Energy management schemes DC-DC Converter Sequence 020208 electrical & electronic engineering Photovoltaic system General Engineering Quality control Grid-connected Conventional methods Switching elements Grid Unbalanced loading Engineering (General). Civil engineering (General) Power (physics) Hybrid system Energy management systems Phase balancing Inverter Management controller TA1-2040 Unbalanced currents Proton Exchange Membrane Fuel Cell (PEMFC) |
| Zdroj: | Ain Shams Engineering Journal, Vol 12, Iss 3, Pp 2809-2822 (2021) |
| ISSN: | 2090-4479 |
| Popis: | This paper presents improved energy management for grid-inverter of a hybrid photovoltaic (PV)/fuel cell (FC) energy system with unbalanced sensitive loads. In the system, unbalanced loads draw unbalanced currents at each phase and consume power from energy units at different levels. This condition makes the grid unbalanced, which cannot be compensated by a conventional energy management controller used in grid inverters. For this, a phase balancing control method is proposed in order to improve the grid quality under unbalanced loading conditions. The proposed method calculates power differentiation values based on multiple-frame ab/dq transform instead of abc/dq transform in the conventional method. Thus, it eliminates negative & zero sequence components in addition to power flow control. Under unbalanced loading conditions, the proposed method removes the deficiency of the conventional energy management method which generates the symmetrical current references to trigger the switching elements of the inverter. In performance results, the system with unbalanced loads is tested for different case studies, which supply different power from energy units to grids. The results show that the proposed method provides power balancing at the grid-side and eliminates negative & zero sequence components at grid-side currents. (C) 2021 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Ain Shams University. |
| Databáze: | OpenAIRE |
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