{"title":"DC Link Floating for Grid Connected PV Converters","authors":"Attila Balogh, Eszter Varga, Istv\u00e1n Varjasi","volume":16,"journal":"International Journal of Electronics and Communication Engineering","pagesStart":566,"pagesEnd":572,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/7391","abstract":"Nowadays there are several grid connected converter\r\nin the grid system. These grid connected converters are generally the\r\nconverters of renewable energy sources, industrial four quadrant\r\ndrives and other converters with DC link. These converters are\r\nconnected to the grid through a three phase bridge. The standards\r\nprescribe the maximal harmonic emission which could be easily\r\nlimited with high switching frequency. The increased switching\r\nlosses can be reduced to the half with the utilization of the wellknown\r\nFlat-top modulation. The suggested control method is the\r\nexpansion of the Flat-top modulation with which the losses could be\r\nalso reduced to the half compared to the Flat-top modulation.\r\nComparing to traditional control these requirements can be\r\nsimultaneously satisfied much better with the DLF (DC Link\r\nFloating) method.","references":"[1] P. Wood, Switching Power Converters. Van Nostrand Reinhold\r\nCompany, New York, 1981.\r\n[2] H. W. van der Broeck, H. Ch. Skudelny, and G. Stanke, Analysis and\r\nrealization of a pulse width modulator based on voltage source space\r\nvectors. IEEE Transactions on Industrial Applications, vol 24, pp 142-\r\n150, 1988.\r\n[3] S. Ogasawara, H. Agaki, and A. Nabae, A novel PWM scheme of\r\nvoltage source inverter based on space vector theory. Conference record\r\nEuropean Power Electronics Conf., pp 1197-1202, 1989.\r\n[4] G. Buja and G Indri, Improvement of pulse width modulation\r\ntechniques, Arch Elektrotech. (Germany), vol 57, pp 281-289, 1975.\r\n[5] T. Shimizu, M.Hirakata, T. Kamezawa, H. Watanabe, Generation\r\nControl Circuit for Photovoltaic Modules. IEEE Trans. On Power\r\nElectronics, Vol. 16, No. 3, May, 2001, pp. 293\r\n[6] R.W. Erickson, D. Maksimovic, Fundamentals of Power Electronics.\r\nKluwer Academic Pub; March 1, 1997, ISBN: 0-412-08541-0, 773\r\npages.\r\n[7] UL 1741, UL Standard for inverters, converters, and controllers for use\r\nin independent power production systems, Northbrook, 2001\r\n[8] IEC 61727 International Standard, Photovoltaic (PV) systems -\r\nCharacteristics of the utility interface, Switzerland, 2004.\r\n[9] A. Balogh, I. Varjasi, Discontinuous Current Mode of a Grid Connected\r\nPV Converter, IYCE2007, Budapest, Hungary\r\n[10] I. Varjasi, A. Balogh, S. Halasz, Sensorless control of a grid connected\r\nPV converter, EPE-PEMC2006, Portoroz., Slovenia.\r\n[11] A. Balogh, Z.T. Bilau and I. Varjasi, High Efficiency Control of a Grid\r\nConnected PV Converter. In Proc. of EuroPES2007, Palma de\r\nMallorca, Spain.\r\n[12] Attila Balogh, Zolt\u251c\u00edn Tam\u251c\u00eds Bilau, Istvan Varjasi Control Algorithm for\r\nHigh Efficiency Grid Connected PV Converters. In Proc. of IWCIT\r\n2007, Ostrava, Czech Republic\r\n[13] Attila Balogh, Eszter Varga, Istv\u251c\u00edn Varjasi: 3SC for Grid Connected\r\nConverters, In Proc. of Power and Energy Systems Conference\r\n(EuroPES 2008), Corfu, Greece, 2008.\r\n[14] Attila Balogh, Zoltan Tam\u251c\u00eds Bilau, Istv\u251c\u00edn Varjasi, S\u251c\u00edndor Hal\u251c\u00edsz: High\r\nEfficiency Control of a Low Noise PV Converter, In Proc. of\r\nMezsdunarodnaja Naucsno-Tehnicseszkaja Konferencija,Tomszk,\r\nRussia, 2007.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 16, 2008"}