Three Phase PV Grid-Tied System(MPPT)

[JermziePV]

Homework Statement

Currently, I'm doing on a research of this three phase PV grid tied system. I found a model and try to run and simulate for further understanding. There's an attachment of a model three phase pv grid tied system in Simulink. However, I've a hard time understanding the MPPT and also the subsystem part in the model. Can anyone guide me on this? Many thanks.

Homework Equations

The Attempt at a Solution

I tried to place sink block to get the readings on every line. However, I have no idea how to get the value after the signal going through the memory block. I would like to know how it works. Meanwhile, for the subsystem, I guess it's a combination of solar equations.

 

[berkeman]

Homework Statement

Currently, I'm doing on a research of this three phase PV grid tied system. I found a model and try to run and simulate for further understanding. There's an attachment of a model three phase pv grid tied system in Simulink. However, I've a hard time understanding the MPPT and also the subsystem part in the model. Can anyone guide me on this? Many thanks.

Homework Equations

The Attempt at a Solution

I tried to place sink block to get the readings on every line. However, I have no idea how to get the value after the signal going through the memory block. I would like to know how it works. Meanwhile, for the subsystem, I guess it's a combination of solar equations.

Welcome to the PF.

The simulation file doesn't appear to be attached to this copy of your thread. Can you attach it? Can you also attach a PDF version of the document?

 

[JermziePV]

Welcome to the PF.

The simulation file doesn't appear to be attached to this copy of your thread. Can you attach it? Can you also attach a PDF version of the document?

There's an attachment of the Three Phase Grid-Tied System in Matlab/Simulink.

Actually,I'm having difficulties in understanding how the MPPT and subsytem work.My questions are:

In MPPT block,
i) Is Pn-Pb equivalent to P(n)-P(n-1) ?
ii) Instead of delta P/delta V why is that delta P * delta V ?
iii)Izit necessary to set the duty ratio to 0.001(Delta D)?

In Subsystem block,
i)I try to model out the equation. But I couldn't really figure it out which equation he used.

Sincerely hope you could guide me on this. Sorry for any inconveniences caused. Many thanks.