Highlights
Task
Design a single-stage three-phase grid-connected 1 MW PV system. Consider the unity powerfactorsystemso=0. Requirements are given below:
i. Use incremental conductance-based MPPT system and operate the system at the maximum power point. (PV power should be 1 MW, you can consider any Ns and Np which make a 1 MW system). Then, run the simulation and show the DC link voltage waveform. Rename the simulation file in this case so that I can understand the simulation.
ii. In this case, change the perturbation step size (Constant perturbation step size was used in case (i) and run the simulation and show the effects of that perturbation step size on the Dc-link voltage waveform (PV power will remain the same as 1
MW). Rename the simulation file in this case so that I can understand the simulation.
iii. In this case, use the constant perturbation step size that was used in case (i). Now, change the MPPT sampling time and show the effects of the MPPT sampling time on the Dc-link voltage waveform. Rename the simulation file in this case so that I can understand the simulation.
iv. Consider fixed perturbation step size and fixed sampling time. Change the reference dc-link voltage from maximum power point voltage to higher and maximum power point voltage to lower voltage. Run the simulation and show the dc-link voltage waveform for step command dc-voltage. Rename the simulation file in this case so that I can understand the simulation.
v. Include a single-line to ground fault in the system and check the performance of the system during fault. Rename the simulation file in this case so that I can understand
the simulation.
vi. We know the problem with the fixed step MPPT. If step size increases, the dc-link voltage fluctuates. So, use a variable step size MPPT means if we are far away from the MPP, then step size is higher, but when closer to the MPP, the step size is smaller. Show the effect in the DC-link voltage waveform and show the comparison with the fixed step size. Rename the simulation file in this case so that I can understand the simulation
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