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Sba Controle & Automação vol.19 número4

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Fig. 4 shows the circuit of the DC-DC buck converter fed by a photovoltaic (PV) array
Figure 4: Buck converter with variable input and fixed output voltage fed by a photovoltaic (PV) array.
Figure 6: Feedback control of the input voltage of the con- con-verter.
Fig. 10 shows the current control loop with the compensator C id (s). This compensator may be a simple  proportional-integral one, but the proportional gain must be carefully  cho-sen in order to set a crossover frequency with a good phase margin, keeping
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