Nowadays there are several grid connected converter
in the grid system. These grid connected converters are generally the
converters of renewable energy sources, industrial four quadrant
drives and other converters with DC link. These converters are
connected to the grid through a three phase bridge. The standards
prescribe the maximal harmonic emission which could be easily
limited with high switching frequency. The increased switching
losses can be reduced to the half with the utilization of the wellknown
Flat-top modulation. The suggested control method is the
expansion of the Flat-top modulation with which the losses could be
also reduced to the half compared to the Flat-top modulation.
Comparing to traditional control these requirements can be
simultaneously satisfied much better with the DLF (DC Link
Floating) method.
[1] P. Wood, Switching Power Converters. Van Nostrand Reinhold
Company, New York, 1981.
[2] H. W. van der Broeck, H. Ch. Skudelny, and G. Stanke, Analysis and
realization of a pulse width modulator based on voltage source space
vectors. IEEE Transactions on Industrial Applications, vol 24, pp 142-
150, 1988.
[3] S. Ogasawara, H. Agaki, and A. Nabae, A novel PWM scheme of
voltage source inverter based on space vector theory. Conference record
European Power Electronics Conf., pp 1197-1202, 1989.
[4] G. Buja and G Indri, Improvement of pulse width modulation
techniques, Arch Elektrotech. (Germany), vol 57, pp 281-289, 1975.
[5] T. Shimizu, M.Hirakata, T. Kamezawa, H. Watanabe, Generation
Control Circuit for Photovoltaic Modules. IEEE Trans. On Power
Electronics, Vol. 16, No. 3, May, 2001, pp. 293
[6] R.W. Erickson, D. Maksimovic, Fundamentals of Power Electronics.
Kluwer Academic Pub; March 1, 1997, ISBN: 0-412-08541-0, 773
pages.
[7] UL 1741, UL Standard for inverters, converters, and controllers for use
in independent power production systems, Northbrook, 2001
[8] IEC 61727 International Standard, Photovoltaic (PV) systems -
Characteristics of the utility interface, Switzerland, 2004.
[9] A. Balogh, I. Varjasi, Discontinuous Current Mode of a Grid Connected
PV Converter, IYCE2007, Budapest, Hungary
[10] I. Varjasi, A. Balogh, S. Halasz, Sensorless control of a grid connected
PV converter, EPE-PEMC2006, Portoroz., Slovenia.
[11] A. Balogh, Z.T. Bilau and I. Varjasi, High Efficiency Control of a Grid
Connected PV Converter. In Proc. of EuroPES2007, Palma de
Mallorca, Spain.
[12] Attila Balogh, Zoltán Tamás Bilau, Istvan Varjasi Control Algorithm for
High Efficiency Grid Connected PV Converters. In Proc. of IWCIT
2007, Ostrava, Czech Republic
[13] Attila Balogh, Eszter Varga, István Varjasi: 3SC for Grid Connected
Converters, In Proc. of Power and Energy Systems Conference
(EuroPES 2008), Corfu, Greece, 2008.
[14] Attila Balogh, Zoltan Tamás Bilau, István Varjasi, Sándor Halász: High
Efficiency Control of a Low Noise PV Converter, In Proc. of
Mezsdunarodnaja Naucsno-Tehnicseszkaja Konferencija,Tomszk,
Russia, 2007.
[1] P. Wood, Switching Power Converters. Van Nostrand Reinhold
Company, New York, 1981.
[2] H. W. van der Broeck, H. Ch. Skudelny, and G. Stanke, Analysis and
realization of a pulse width modulator based on voltage source space
vectors. IEEE Transactions on Industrial Applications, vol 24, pp 142-
150, 1988.
[3] S. Ogasawara, H. Agaki, and A. Nabae, A novel PWM scheme of
voltage source inverter based on space vector theory. Conference record
European Power Electronics Conf., pp 1197-1202, 1989.
[4] G. Buja and G Indri, Improvement of pulse width modulation
techniques, Arch Elektrotech. (Germany), vol 57, pp 281-289, 1975.
[5] T. Shimizu, M.Hirakata, T. Kamezawa, H. Watanabe, Generation
Control Circuit for Photovoltaic Modules. IEEE Trans. On Power
Electronics, Vol. 16, No. 3, May, 2001, pp. 293
[6] R.W. Erickson, D. Maksimovic, Fundamentals of Power Electronics.
Kluwer Academic Pub; March 1, 1997, ISBN: 0-412-08541-0, 773
pages.
[7] UL 1741, UL Standard for inverters, converters, and controllers for use
in independent power production systems, Northbrook, 2001
[8] IEC 61727 International Standard, Photovoltaic (PV) systems -
Characteristics of the utility interface, Switzerland, 2004.
[9] A. Balogh, I. Varjasi, Discontinuous Current Mode of a Grid Connected
PV Converter, IYCE2007, Budapest, Hungary
[10] I. Varjasi, A. Balogh, S. Halasz, Sensorless control of a grid connected
PV converter, EPE-PEMC2006, Portoroz., Slovenia.
[11] A. Balogh, Z.T. Bilau and I. Varjasi, High Efficiency Control of a Grid
Connected PV Converter. In Proc. of EuroPES2007, Palma de
Mallorca, Spain.
[12] Attila Balogh, Zoltán Tamás Bilau, Istvan Varjasi Control Algorithm for
High Efficiency Grid Connected PV Converters. In Proc. of IWCIT
2007, Ostrava, Czech Republic
[13] Attila Balogh, Eszter Varga, István Varjasi: 3SC for Grid Connected
Converters, In Proc. of Power and Energy Systems Conference
(EuroPES 2008), Corfu, Greece, 2008.
[14] Attila Balogh, Zoltan Tamás Bilau, István Varjasi, Sándor Halász: High
Efficiency Control of a Low Noise PV Converter, In Proc. of
Mezsdunarodnaja Naucsno-Tehnicseszkaja Konferencija,Tomszk,
Russia, 2007.
@article{"International Journal of Electrical, Electronic and Communication Sciences:56470", author = "Attila Balogh and Eszter Varga and István Varjasi", title = "DC Link Floating for Grid Connected PV Converters", abstract = "Nowadays there are several grid connected converter
in the grid system. These grid connected converters are generally the
converters of renewable energy sources, industrial four quadrant
drives and other converters with DC link. These converters are
connected to the grid through a three phase bridge. The standards
prescribe the maximal harmonic emission which could be easily
limited with high switching frequency. The increased switching
losses can be reduced to the half with the utilization of the wellknown
Flat-top modulation. The suggested control method is the
expansion of the Flat-top modulation with which the losses could be
also reduced to the half compared to the Flat-top modulation.
Comparing to traditional control these requirements can be
simultaneously satisfied much better with the DLF (DC Link
Floating) method.", keywords = "DC link floating, high efficiency, PV converter,control method.", volume = "2", number = "4", pages = "620-6", }