![]() ![]() The initial input irradiance to the PV array model is 1000 W/m2 and the operating temperature is 45 degrees C. Run the simulation and observe the resulting signals on the various scopes. ![]() It included two 25-kV feeders, loads, grounding transformer and an equivalent 120-kV transmission system. The grid is modeled as a typical North American distribution grid. In our example, the carrier frequency is set to 1980 Hz (33*60). PWM Generator: Generate firing signals to the IGBTs based on the required reference voltages. PLL & Measurements: Required for synchronization and voltage/current measurements. In our example, the Iq reference is set to zero. VDC Regulator: Determine the required Id (active current) reference for the current regulator.Ĭurrent Regulator: Based on the current references Id and Iq (reactive current), the regulator determines the required reference voltages for the inverter. This MPPT system automatically varies the VDC reference signal of the inverter VDC regulator in order to obtain a DC voltage which will extract maximum power from the PV array. MPPT Controller: The Maximum Power Point Tracking (MPPT) controller is based on the 'Perturb and Observe' technique. ![]()
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