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This paper focuses on delivering an effective performance qualification (PQ) control strategy for a grid connected photovoltaic (PV) system. A PV-based distributed generation system with a capacity of 10 kilo volt amps (kVA) was connected to the utility side of a power grid operating at 415 V. The power grid was modelled with a capacity of 100 kVA,...
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Context 1
... utility grid includes a three-phase power source, the distribution line, and a three-phase resistive inductive (RL) load which varies periodically. Figure 1 is a block diagram of a grid-connected PV system. The PV source-the solar array-is modelled mathematically through the basic parameters of a PV cell (Rahim and Mekhilef 2002). ...
Context 2
... resistor-capacitor circuit (RC) filter is designed to eliminate a band of harmonics at the inverter end to improve power quality. Figure 10 represents the phase voltage at the point of common coupling (230 Vrms). ...
Context 3
... which 14.49 A peak comes from the grid. When the real power demand changes to 16,000W as indicated in Table 2, a peak current of 49 A is supplied to the load out of which 43 A comes from the grid. Both these current wave forms are given in Figs. 11(a) and (b). Similarly, the power demand and the power delivered by the main grid are shown in the Figs. 12(a) and (b). The sum of the power delivered by the main grid and DG source equals the power demand. The load is rated to demand 8000 W of real power and 12,000 volts-amperes reactive (VAR) of reactive power for the time period of 0-0.1 s. An additional load is connected to the system at 0.1 s, so that the demand rises to 16,000 W and ...
Context 4
... the demand rises, the controller allows the system to deliver its total capacity (10,000 W) as real power (KP = 0.625; KQ = 0). Figure 16 shows the error bandwidth in the stationary frame. Figure 15 shows that the error band region is more confined and the magnitude of the error vector is restricted in the case of a vector-based technique. ...
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