Gupta, S.; Chandrashekar, M.
October 1995
Solar Energy, vol 55-4, p. 267-285
The problems associated with modelling of photovoltaic (PV) powered systems stem from the nature of the components involved. The nonlinearity of the PV arrays as well as other components make it difficult to obtain a system of equation that can be solved simultaneously. Graph Theoretic Modelling (GTM) offers a systematic approach to obtaining a system of equations that can be solved efficiently. Nonlinear systems have been studied in the past. The paper extends the GTM approach to model nonlinear systems. A new format for the matrix system of equations is introduced referred to as the Newton-Raphson Mixed Nodal Tableau (NR MNT). The formulation of the NR MNT system of equations can be automated using component stamps. The stamps for several existing components within PV powered systems are introduced. The NR MNT for several PV powered systems are formulated and solved.
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