A highly efficient single-phase transformerless h-bridge inverter for reducing leakage ground current in photovoltaic grid-connected system

Azri, M. and Abd Rahim, N. and Abd Halim, W. (2015) A highly efficient single-phase transformerless h-bridge inverter for reducing leakage ground current in photovoltaic grid-connected system. Electric Power Components and Systems, 43 (8-10). pp. 928-938. ISSN 1532-5008

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Abstract

In this article, the performance of the split-capacitor H-bridge topology as a single-phase transformerless photovoltaic inverter is studied. By connecting the midpoint of its two series DC-link capacitors to the ground, the split-capacitor H-bridge is able to clamp the common-mode voltage of the system, effectively suppressing leakage ground current. To overcome the issue of capacitor voltage balancing, a simple balancing circuit and its control are introduced. The operation modes, common-mode voltage, and leakage ground current characteristics of the split-capacitor H-bridge topology are discussed, subsequently validated using both simulation and experimental tests. Comparison with a conventional transformerless H-bridge topology proves the superiority of the split-capacitor H-bridge topology in terms of leakage ground current and efficiency.

Item Type: Article
Additional Information: ISI Document Delivery No.: CH6WH Times Cited: 0 Cited Reference Count: 24 Cited References: Anonymous, 2006, German Patent H5-Topology, Patent No. DE 102004030912 B3, 102004030912 Ashaibi AA, 2010, IET POWER ELECTRON, V3, P612, DOI 10.1049/iet-pel.2008.0335 Calais M., 1998, P IEEE INT S IND EL, P224 Cavalcanti MC, 2010, IEEE T IND ELECTRON, V57, P1360, DOI 10.1109/TIE.2009.2029511 Channegowda P, 2010, IEEE T IND ELECTRON, V57, P4106, DOI 10.1109/TIE.2010.2042421 Essakiappan S, 2011, 2011 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE), P28, DOI 10.1109/ECCE.2011.6063745 Gonzalez R, 2007, IEEE T POWER ELECTR, V22, P693, DOI 10.1109/TPEL.2007.892120 Heribert S., 2003, Europe Patent, Patent No. 1 369 985 (A2), 1369985 Huafeng Xiao, 2010, IEEE Transactions on Electromagnetic Compatibility, V52, DOI 10.1109/TEMC.2010.2064169 Kerekes T, 2007, APPL POWER ELECT CO, P1733, DOI 10.1109/APEX.2007.357753 Kerekes T, 2011, IEEE T IND ELECTRON, V58, P184, DOI 10.1109/TIE.2009.2024092 Kerekes T., 2009, THESIS AALBORG U DEN Lin M., 2009, 13 EUR C POW EL APPL, P1 Liu F, 2009, POW EL MOT CONTR C 2, P2174 Lopez O, 2010, IEEE T ENERGY CONVER, V25, P140, DOI 10.1109/TEC.2009.2037810 Ma L, 2008, 2008 IEEE INTERNATIONAL CONFERENCE ON SUSTAINABLE ENERGY TECHNOLOGIES (ICSET), VOLS 1 AND 2, P285 Myrzik J. M. A., 2003, POW TECH C P, P8 Patrao I, 2011, RENEW SUST ENERG REV, V15, P3423, DOI 10.1016/j.rser.2011.03.034 Selvaraj J, 2009, IEEE T IND ELECTRON, V56, P149, DOI 10.1109/TIE.2008.928116 Shukla A, 2008, IEEE T POWER DELIVER, V23, P1139, DOI 10.1109/TPWRD.2008.915804 von Jouanne A, 2002, IEEE T IND ELECTRON, V49, P739, DOI 10.1109/TIE.2002.801233 Wang TCY, 2003, IEEE POWER ELECTRON, P779 Xiao HF, 2011, IEEE T IND ELECTRON, V58, P1887, DOI 10.1109/TIE.2010.2054056 Xiao HF, 2012, IEEE T POWER ELECTR, V27, P1799, DOI 10.1109/TPEL.2011.2164940 Azri, Maaspaliza Abd Rahim, Nasrudin Abd Halim, Wahidah Engineering, Faculty /I-7935-2015 Engineering, Faculty /0000-0002-4848-7052 UM Power Energy Dedicated Advanced Centre (UMPEDAC); University of Malaya Campus Network Smart Grid System for Energy Security Grant H-16001-00-0000032; Universiti Teknikal Malaysia Melaka (UTeM) This work was supported by UM Power Energy Dedicated Advanced Centre (UMPEDAC), University of Malaya Campus Network Smart Grid System for Energy Security Grant (H-16001-00-0000032), and Universiti Teknikal Malaysia Melaka (UTeM); the authors thank all involved. 0 TAYLOR & FRANCIS INC PHILADELPHIA ELECTR POW COMPO SYS SI
Uncontrolled Keywords: Leakage ground current, inverter efficiency, common-mode voltage, transformerless h-bridge inverter, multilevel inverter,
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 17 Mar 2016 01:19
Last Modified: 17 Mar 2016 01:19
URI: http://eprints.um.edu.my/id/eprint/15709

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