System efficiency for AC vs. DC distribution paradigms: a comparative evaluation

• Autorzy: Gelani Hasan Erteza , Khan Sidra , Dastgeer Faizan , Idrees Zeba , Afzal Muhammad Waqas , Nasir Mashood

Identyfikatory

DOI

10.24425/bpasts.2021.139956

• Języki publikacji: EN

Abstrakty

EN

The birth of electricity witnessed “the battle of currents” between AC and DC as a medium of power transfer. AC won the battle in the first place because of its ability to transform voltage levels. However, with the development of power electronic converters (PECs), DC is striking back. Most of the electronic loads in our conventional AC-based homes are DC by nature. Moreover, the modern concept of energy-efficient variable speed drive (VSD) based loads, i.e. DC-inverter based air-conditioners and refrigerators, require a DC link for their operation. The driving component of all such loads is the PEC. The operational efficiency of PECs depends on the loading which varies throughout the day. This paper presents a mathematical model based on a bottom-up approach to the comparative efficiency analysis of AC and DC distribution systems considering daily load variation. Two topologies are presented where AC and DC distribution systems are compared in terms of efficiency. The first topology (T1) defines a separate/independent converter for each load, whereas in the second topology (T2) loads of a particular class are lumped and driven by a single converter. The results present DC distribution better than AC distribution with an efficiency advantage of 2.28% and 1.57% for T1 and T2, respectively.

Słowa kluczowe

EN

AC vs DC; DC distribution; efficiency analysis; residential loads

PL

AC/DC; dystrybucja prądu stałego; analiza wydajności; obciążenie mieszkalne

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2022
• Tom: Vol. 70, nr 1
• Strony: art. no. e139956
• Opis fizyczny: Bibliogr. 42 poz., rys., tab.

Twórcy

autor

Gelani Hasan Erteza

• Electrical Engineering Department, University of Engineering and Technology Lahore, Pakistan

• https://orcid.org/0000-0002-3307-5899

autor

Khan Sidra

• Electrical Engineering Department, COMSATS Lahore, Pakistan

autor

Dastgeer Faizan

• Electrical Engineering Department, University of Engineering and Technology Lahore, Pakistan

• https://orcid.org/0000-0001-8653-1678

autor

Idrees Zeba

• Electrical Engineering Department, University of Engineering and Technology Lahore, Pakistan
• School of Information Science and Engineering, Fudan University, Shanghai, China

autor

Afzal Muhammad Waqas

• Electrical Engineering Department, University of Engineering and Technology Lahore, Pakistan
• Electrical Engineering Department, COMSATS Lahore, Pakistan

autor

Nasir Mashood

• Energy Technology Department, Aalborg University, Denmark

• https://orcid.org/0000-0001-6854-1581

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