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Title: A low cost flyback CCM inverter for AC module application
Authors: Li, Y.
Oruganti, R. 
Keywords: Current control
distributed power generation
power quality
power system stability
solar energy
Issue Date: 2012
Citation: Li, Y., Oruganti, R. (2012). A low cost flyback CCM inverter for AC module application. IEEE Transactions on Power Electronics 27 (3) : 1295-1303. ScholarBank@NUS Repository.
Abstract: The unfolding-type flyback inverter operating in discontinuous conduction mode (DCM) is popular as a low-cost solution for a photovoltaic (PV) ac module application. This paper aims to improve the efficiency by using a scheme based on continuous conduction mode (CCM) for this application. Design issues, both for the power scheme and the control scheme, are identified and trade-offs investigated. An open-loop control of the secondary current, based on feedback control of the primary current, is proposed in order to bypass the difficulties posed by the moving right half plane zero in the duty cycle to secondary current transfer function. The results presented show an improvement of 8 in California efficiency compared to the benchmark DCM scheme for a 200-W PV module application. The output power quality at rated power level is capable of meeting IEC61727requirements. The stability of the flyback inverter in CCM has been verified at selected working conditions. © 2011 IEEE.
Source Title: IEEE Transactions on Power Electronics
ISSN: 08858993
DOI: 10.1109/TPEL.2011.2164941
Appears in Collections:Staff Publications

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