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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 29414

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A Double PWM Source Inverter Technique with Reduced Leakage Current for Application on Standalone Systems
The photovoltaic (PV) panel with no galvanic isolation system is well known technique in the world which is effective and delivers power with enhanced efficiency. The PV generation presented here is for stand-alone system installed in remote areas when as the resulting power gets connected to electronic load installation instead of being tied to the grid. Though very small, even then transformer-less topology is shown to be with leakage in pico-ampere range. By using PWM technique PWM, leakage current in different situations is shown. The results shown in this paper show how the pico-ampere current is reduced to femto-ampere through use of inductors and capacitors of suitable values of inductor and capacitors with the load.
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[1] Yang, Bo et al. "Improved transformerless inverter with common-mode leakage current elimination for a photovoltaic grid-connected power system." Power Electronics, IEEE Transactions. 2012; 27(2): 752-762
[2] Buticchi, Giampaolo et al. "Digital control of actual grid-connected converters for ground leakage current reduction in PV transformerless systems." Industrial Informatics, IEEE Transactions. 2012; 8(3): 563- 572
[3] Gu, Bin et al. "High reliability and efficiency single-phase transformerless inverter for grid-connected photovoltaic systems." Power Electronics, IEEE Transactions. 2013; 28(5): 2235-2245
[4] Buticchi, G et al. "A novel compensation strategy of actual commutations for ground leakage current reduction in PV transformerless converters." In IECON 2010-36th Annual Conference on IEEE Industrial Electronics Society. 2010: 3179-3184
[5] Gu, Yunjie et al. "Transformerless inverter with virtual DC bus concept for cost-effective grid-connected PV power systems." Power Electronics, IEEE Transactions. 2013; 28(2): 793-805
[6] Khan, Md, Noman Habib et al "DC-AC inverter with perspective of common mode and wave-shaping." In Smart Instrumentation, Measurement and Applications (ICSIMA), 2013 IEEE International Conference. 2013: 1-5
[7] Khan, Md, Noman Habib et al. "Wave shaping with reduced leakage current in transformer-less inverter." In Smart Instrumentation, Measurement and Applications (ICSIMA), 2013 IEEE International Conference. 2013: 1-5
[8] Garg, A et al. "A new modulation technique to eliminate leakage current in transformerless PV inverter." In Engineering and Systems (SCES), 2013 Students Conference IEEE. 2013: 1-6
[9] Dong, Dong et al. "Leakage current reduction in a single-phase bidirectional AC–DC full-bridge inverter." Power Electronics, IEEE Transactions. 2012; 27(10): 4281-4291
[10] Cavalcanti, Marcelo C et al. "Modulation techniques to eliminate leakage currents in transformerless three-phase photovoltaic systems." Industrial Electronics, IEEE Transactions. 2010; 57( 4): 1360-1368
[11] D. Barater et al, “A new proposal for ground leakage current reduction in Transformerless Grid-Connected Converters for Photovoltaic Plants” Industrial Electronics, 2009. IECON '09. 35th Annual Conference of IEEE. 2009.
[12] González, Roberto et al. "Transformerless single-phase multilevel-based photovoltaic inverter." Industrial Electronics, IEEE Transactions on 55, 2008; 7: 2694-2702
[13] Lopez, Oscar et al. "Eliminating ground current in a transformerless photovoltaic application." Energy Conversion, IEEE Transactions on. 2010; 25(1): 140-147
[14] John, Jeena, and A. Immanuel Selvakumar. "A high efficiency singlephase transformerless PV inverter topology with reduced leakage current." In Power, Energy and Control (ICPEC), 2013 International Conference IEEE. 2013: 255-259
[15] Kerekes, Tamas et al. "Transformerless photovoltaic inverters connected to the grid." In Proceedings of the APEC. 2007: 1733-1737
[16] Mohammad Pichan et al. "Comparison of RCMV-PWM methods for photovoltaic systems with deadtime effect consideration” Second Iranian Conference on Smart Grids (ICSG). 2012;
[17] Barater, D et al. "Unipolar PWM for transformerless grid-connected converters in photovoltaic plants." In Clean Electrical Power, 2009 International Conference IEEE. 2009: 387-392
[18] Basu, Kaushik, and M. Ned. "A High Frequency Link Single Stage PWM Inverter with Common-Mode Voltage Suppression and Source based Commutation of Leakage Energy." Power Electronics, IEEE Transactions. (2013; 29(8): 3907 - 3918
[19] Barater, Davide et al. "Unipolar PWM strategy for transformerless PV grid-connected converters." Energy Conversion, IEEE Transactions. 2012; 27( 4): 835-843
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