Abstract
This paper presents a comprehensive study of the digital implementation of the control requirements of the output stage of a two-stage solar microinverter. This approach uses a synchronized nested-loop controller which ensures the tracking of an internally generated high-quality current reference, the estimation and cancelation of the effect of the DC-link voltage ripple in the control loops and the regulation of the average value of the DC-link voltage. The proposed control architecture is validated by means of simulation results comparing operation of the inverter using continuous time, quasi-discrete time and discrete time implementations.
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Acknowledgements
This research is being developed with the partial support of the Gobernación del Tolima under Convenio de cooperación 1026 - 2013 - Research Culture. The results presented in this paper have been obtained with the assistance of students from the Research Hotbed on Power Electronic Conversion (SICEP), Research Group D+TEC, Universidad de Ibagué, Ibagué-Colombia.
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Lopez-Santos, O., Cortes-Torres, L., Tilaguy-Lezama, S. (2016). Discrete Time Nested-Loop Controller for the Output Stage of a Photovoltaic Microinverter. In: Figueroa-García, J., López-Santana, E., Ferro-Escobar, R. (eds) Applied Computer Sciences in Engineering. WEA 2016. Communications in Computer and Information Science, vol 657. Springer, Cham. https://doi.org/10.1007/978-3-319-50880-1_28
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