Transformerless 3-Phase PV Inverter Simulation for Efficient Building Installations

  • P. Fetfatzis
  • P. Kofinas
  • M. Kallousis
  • C. Alafodimos
  • C. Stergiou
Part of the Smart Innovation, Systems and Technologies book series (SIST, volume 12)


A transformerless 3-phase grid tied solar inverter’s simulation is being presented in this paper. Transformerless topologies improve the efficiency of the system. The inverter’s simulation model has been developed in Matlab/ Simulink. There are however issues such as the leakage current phenomenon that need further discussion. We analyze the parts of the model that are: the PV model we use, the MPPT algorithm through a DC/DC converter, the inverter’s control circuit, the LC filter, the connection to the grid and the passive filter. We also discuss the use of a Kalman filter in order to reduce the total harmonic distortion. The analysis and the results we extract, arise from a whole system simulation.


Kalman Filter Parasitic Capacitance Total Harmonic Distortion Maximum Power Point Tracking Maximum Power Point 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    Wu, T.-F., Chang, C.-H., Chang, Y.-D., Lee, K.-Y.: Power Loss Analysis of Grid Connection Photovoltaic Systems. In: PEDS 2009, pp. 326–331 (2009)Google Scholar
  2. 2.
    Yafaoui, A., Wu, B., Cheung, R.: Implementation of Maximum Power Point Tracking Algorithm for residential Photovoltaic systems. In: 2nd Canadian Solar Buildings Conference Calgary, Toronto, Ontario, Canada, June 10-14 (2007)Google Scholar
  3. 3.
    Lopez, O., Teodorescu, R., Freijedo, F., Doval- Gandoy, J.: Eliminating ground current in a transformerless photovoltaic application. In: Power Engineering Society General Meeting, pp. 1–5 (2007)Google Scholar
  4. 4.
    Meinhardt, M., Mutschler, P.: Inverters without transformer in grid connected photovoltaic applications. In: Proc. Eur. Conf. Power Electron. Appl. EPE, Sevilla, Spain, vol. 3, pp. 3086–3091 (September 1995)Google Scholar
  5. 5.
    Kerekes, T., Teodorescu, R., Borup, U.: Transformerless Photovoltaic Inverters Connected to the Grid. In: IEEE Applied Power Electronics Conference, APEC 2007 - Twenty Second Annual, February 25 - March 1, pp. 1733–1737 (2007)Google Scholar
  6. 6.
    Sahan, B., Notholt-Vergara, A., Engler, A., Zacharias, P.: Development of a single-stage threephase PV module integrated converter. In: 12th European Conference on Power Electronics and Applications EPE, Aalborg, Denmark, pp. 1–11 (September 2007)Google Scholar
  7. 7.
    St. Kourtesi, L., Ekonomou, A., Nakulas, G.P., Fotis, E.: Modeling and simulation of a single phase photovoltaic inverter and investigation of switching strategies for harmonic minimization. In: 2nd Canadian Solar Buildings Conference Calgary, pp. 155–159 (June 2007)Google Scholar
  8. 8.
    Fetfatzis, P., Kofinas, P., Kallousis, M., Alafodimos, K.: Parameter Analysis of a Grid tied PV inverter’s dynamic behaviour, eRA-4 Proceedings (2009)Google Scholar
  9. 9.
    Alafodimos, K., Fetfatzis, P., Kofinas, P., Kallousis, M., Kikida-kis, X.: Design Simulation for a 3-Phase grid connected PV Inverter in Simulink. In: eRA-3 Proceedings, pp. 76–87 (2008)Google Scholar
  10. 10.
    Calais, M., Agelidis, V.G., Meinhardt, M.: Multilevel con-verters for single-phase grid connected photovoltaic systems: An over-view. Solar Energy 66(5), 325–335 (1999)CrossRefGoogle Scholar
  11. 11.
    Kerekes, T., Teodorescu, R., Rodríguez, P., Vázquez, G., Aldabas, E.: A new highefficiency single-phase transformerless PV inverter topology. IEEE (2009)Google Scholar
  12. 12.
    Gubía, E., Sanchis, P., Ursúa, A., et al.: Ground currents in Sin-gle-phase Transformerless Photovoltaic Systems. In: Progress in Photovol-taics: Research and Applications, pp. 629–650 (2007)Google Scholar
  13. 13.
    Kerekes, T., Teodorescu, R., Liserre, M.: Common-mode voltage in case of transformerless PV inverters connected to the grid. In: ISIE 2008, pp. 2390–2395 (2008)Google Scholar
  14. 14.
    Maybeck, Peter,S.: Stochastic Models, Estimation and Control, vol. 1. Academic Press, Inc. (1979)Google Scholar
  15. 15.
    Beltran, H., Zabalza, J., Ariño, C., Belenguer, E., Perez, E., Aparicio, N.: Improved Kalman Filter Based Inverter Control for Reduction of Low Order Current Harmonics due to Isolation Transformers in Renewable Energy Sources. In: ICREPQ 2009 (2009)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • P. Fetfatzis
    • 1
  • P. Kofinas
    • 1
  • M. Kallousis
    • 1
  • C. Alafodimos
    • 1
  • C. Stergiou
    • 2
  1. 1.Automation DepartmentTechnological Educational Institute (TEI) of PiraeusGreece
  2. 2.Mechanical Engineering DepartmentTechnological Educational Institute (TEI) of PiraeusGreece

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