Direct-DC Power System Generation Based on Single-Phase Rooftop Photovoltaic in Residential Low Voltage Feeder

Siti Amra, Nelly Safitri, Akhyar Akhyar, Usmardi Usmardi

Abstract


The trend of converting direct current (DC) system into alternating current (AC) using inverter becomes common since the system efficiency appropriately improves. Additionally, the mitigation on direct-DC power system requires transformer and inverters inside the appliances due to lower and convert the 230VAC into useable DC voltage. This paper proposes the direct-DC power system generation based on single-phase rooftop photovoltaic (PV) in the residential low voltage (LV) feeder. The proposed simulation designates the power system components included in the modeling of the AC and direct-DC houses, which the included power system components downstream of the PV array. The efficiency of direct-DC power supply, grid interactive inverter and charge controller are simulated. The results show that the peak curve efficiency of direct-DC power supply has DC power input narrow to 400VDC. It is then become 2% higher than 220VAC power input. While the inverter with multiple MPPT efficiency curve has the peak of 96-97% after 30% loads, while when it is partly loads, with the power capacity below 1000W, has peak at range of 86-95%. Then the efficiency curve of charge controller with MPPT for partly load scheme below 30W output power the peak is about 90-94%.

Keywords


Direct DC; rooftop PV; residential LV; inverter; MPPT

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References


K Garbesi, V Vossos, and H Shen, “Catalog of DC Appliances and Power Systems,†Energy Analysis Department Environmental Energy Technologies Division Lawrence Berkeley National Laboratory, Berkeley,(2011)CA 94720,.

M M Friedeman, E C Boelman, A van Timmeren, and J Schoonman, “Concept for a DC low voltage house,†presented at Sustainable Building conference, (2002) Paper_SB02_#217.doc.

T Taufik, “The DC House Project: An Alternate Solution for Rural Electrification,†presented at IEEE 2014 Global Humanitarian Technology Conference, (2014) 978-1-4799-719 3-0/14 IEEE.

J Crowfoot, “Design and Modeling of the Cal Poly DC House Power Distribution System,†a master thesis of Science in Electrical Engineering that presented to the Faculty of California Polytechnic State University, (2011) San Luis Obispo,.

J Baek, S Gab-Su, C Kyusik, P Cheol-Woo, K Hyejin, B Hyunsu, & H C Bo, DC Distribution system design and implementation for Green Building, in Green Building Power Forum (2011): San Jose, CA.

N Safitri, F Shahnia, and M A S Masoum, “Monte Carlo-based Stochastic Analysis Results for Coordination of Single-Phase Rooftop PVs in Low Voltage Residential Networks,†Intelligent Industrial System Journal, (2015) 1:359–371, DOI 10.1007/s40903-015-0029-2, © Springer Science + Business Media Singapore,

W Li, X Mou, Y Zhou, and C Marnay, “On voltage standards for DC home microgrids energized by distributed sources,†presented in Power Electronics and Motion Control Conference, (2012)pages 2282–2286,. ISBN 9781457720888.

H Pang, B Pong, and E W C Lo, “A practical and efficient DC distribution system for commercial and residential applications 240 V or higher,†presented at the international conference on electrical engineering (2008), pages 1–4,.

M A Vargas Evants, “Why Low Voltage Direct Current Grids? A case-study assessment of using direct current in low voltage distribution,†a master thesis of science in Sustainable Energy Technology, Delft University of Technology, (2013).

S Anand, and B G G Fernandes. Optimal voltage level for DC microgrids. IECON 2010-36th Annual Conference on IEEE Industrial Electronics Society, (2010), pages 3034–3039,.

F C Lee, et al., Proposal for a MiniConsortium on Sustainable Buildings and Nanogrids, Center for Power Electronic Systems, Virgina Tech: Blacksburg, VA, (2010).

Nextek Power Systems. Technical Document Library. Available from: http://www.nextekpower.com/technology/technical-document-library.

AEE Solar. 2010 Renewable Energy Design Guide and Catalog. (2010), Available from: http://www.aeesolar.com/PDFs/aee-solar-2010-catalog.pdf.

EMerge Alliance. An open industry association. (2011), Available from: http://emergealliance.org.


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