Approach to low-cost prevention of DC injection in transformerless grid connected inverters

IET Power Electronics

Volumn 3, Issue 1, 2010, Pages 111-119

  Blewitt, W M ^a   Atkinson, D J ^a   Kelly, J ^b   Lakin, R A ^b  

^a NEWCASTLE UNIVERSITY   (United Kingdom)

^b Turbopowersytems Ltd   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

DC CURRENT; DC INJECTION; DIFFERENTIAL MODE; DISTRIBUTED GENERATION; DISTRIBUTED GENERATORS; ELECTRICITY DISTRIBUTION NETWORKS; GRID CONNECTED INVERTERS; ISOLATION TRANSFORMERS; TRANSFORMERLESS;

DISTRIBUTED PARAMETER NETWORKS; ELECTRIC UTILITIES;

DC TRANSFORMERS;

EID: 77956497794     PISSN: 17554535     EISSN: 17554543     Source Type: Journal    
DOI: 10.1049/iet-pel.2008.0319     Document Type: Article

References (24)

1. Gertmar, L., Karlsson, P., and Samuelsson, O.: ' On DC injection to AC grids from distributed generation ', Power Electronics and Applications, European Conf., September, 11-14, 2005, p. 10
2. DC injection into low voltage AC networks ', DTI Commissioned Report, June, 2005, University of Strathclyde
3. Lee, S.B., and Habetler, T.G.: ' An online stator winding resistance estimation technique for temperature monitoring of line-connected induction machines ', IEEE Trans. Ind. Appl., 2003, 39, (3), p. 685-694 0093-9994
4. ' Effects of DC from embedded generation on residual current devices and single phase metering ', Ea Technology Report, February, 2000
5. Aylott, P.J.: ' Stray current is for life-not just for Christmas. Stray current corrosion management strategies for DC traction systems ', DC Traction Stray Current Control, IEE Seminar on, 1999, p. 71-76
6. Gubia, E., Sanchis, P., Ursua, A., Lopez, J., and Marroyo, L.: ' Ground currents in single-phase transformerless photovoltaic systems ', Prog. Photovoltaics: Res. Appl., 2007, 15, (7), p. 629-650 (Pubitemid 47631310)
7. Gonzalez, R., Gubia, E., Lopez, J., and Marroyo, L.: ' Transformerless single-phase multilevel-based photovoltaic inverter ', IEEE Trans. Ind. Electron., 2008, 55, (7), p. 2694-2702 0278-0046
8. Calais, M., Agelidis, V.G., and Dymond, M.S.: ' A cascaded inverter for transformerless single-phase grid-connected photovoltaic systems ', Renew. Energy, 2001, 22, (1), p. 255-262 0960-1481
9. Ward, I.: ' Utility compatibility of nonisolated residential power conditioners ', PV Specialist Conf., IEEE Conf., 1987, issue 19
10. Haeberlin, H.: ' Evolution of inverters for grid connected systems from 1989 to 2000 ', 17th, European Photovoltaic Solar Energy Conf., October, 2001
11. Gonzalez, R., Lopez, J., Sanchis, P., Gubia, E., Ursua, A., and Marroyo, L.: ' High-efficiency transformerless single-phase photovoltaic inverter ', Power Electronics and Motion Control Conf., EPE-PEMC, August, 2006, 12, p. 1895-1900 (Pubitemid 351577342)
12. ' PV system installation and grid-interconnection guidelines in selected IEA countries ', Report IEA PVPS T5-04:2001, November, 2001, International Energy Agency
13. Spooner, E.D., and Harbidge, G.: ' Review of international standards for grid connected photovoltaic systems ', Renew. Energy, 2001, 22, (22), p. 235-239 0960-1481
14. ' Recommendations for the connection of small-scale embedded generators (up to 16A per phase) in parallel with public low-voltage distribution networks ', September, 2003, Engineering Recommendation G83/1, Energy Networks Association
15. ' IEEE recommended practice for utility interface of photovoltaic (PV) systems ', January, 2000, IEEE Standard 929-2000, IEEE
16. Armstrong, M., Atkinson, D.J., Johnson, C.M., and Abeyasekera, T.D.: ' Auto-calibrating DC link current sensing technique for transformerless, grid connected, H-bridge inverter systems ', IEEE Trans. Power Electron., 2006, 21, (5), p. 1385-1393 0885-8993
17. Sharma, R.: ' Removal of DC offset current from transformerless PV inverters connected to utility ', 40th, Int. Universities Power Engineering Conf., 2005, p. 1230-1234
18. Ahfock, T., and Botwell, L.: ' DC offset elimination in a single phase grid-connected photovoltaic system ', Australasian Universities Power Engineering Conf., AUPEC 2006, December, 10-13, 2006
19. Lee, T.-L., and Chen, Z.-J.: ' A transformerless interface converter for a distributed generation system ', p. 1704-1709, EPE-PEMC 2008
20. Masoud, K., and Ledwich, G.: ' Grid connection without mains frequency transformers ', J. Electr. Electron. Eng., 1999, 19, p. 31-36
21. Rahman, M.F., Lim, K.W., and Low, K.S.: ' Evaluation of an EMF injection scheme for a permanent magnetbrushless DC drive ', Symp. Industrial Electronics, IEEE Proc., May, 1992, p. 625-629
22. Dubilier, C.: ' Aluminium electrolytic capacitors ', 'Applications guide', available at http://www.cde.com
23. Parler, S.G.: ' Selecting and applying aluminum electrolytic capacitors for inverter applications ', Research Paper, Cornell Dubilier, available at http://www.cde.com
24. Salas, V., Alonso-Abella, M., Olias, E., Chenlo, F., and Barrado, A.: ' DC current injection into the network from PV inverters of <5kW for low-voltage small grid-connected PV systems ', Sol. Energy Mater. Sol. Cells, 2007, 91, p. 801-806 0927-0248