How use Three-Phase Dynamic Load block to generate Power data?

Hi there!

I am trying to model a three phase power system, with measured data of active and reactive power using Simscape, as shown below.

I am trying to use the external control for the module, since I already have the data measured and I just need to get that data into the load. The Active and Reactive power are vectors with the value I want as the load, as shown below.

At the end, it is given mee two errors, due two the size of the matrix, but I cannot figure out what I am doing wrong.

[Salma Al abri]

Hello Enmanuel, Did you mange to figure out how to solve this problem! Because I have been fasing similar issue and havent got to the soluion yet.

Answer 1

[Vasco Lenzi]

Hi Enmanuel

you need to feed P&Q as a timeseries, and not as a vector of elements. In total you will feed a vecotr of size 2, varying over time to change P&Q at different times:

So you need to use a block such as the repeating sequence in which you can define values at a certain time:

Answer 2

[Jorge Luis Arrúa Gines]

Hola, pueden ayudarme a montar lo descripto por Vasco? gracias

[Vasco Lenzi]

hi Jorge, where do you need more information?

If you wnat to simulate a linear increase in P and Q you can simply use the ramp source block in simulink:

there are many source block available to customize your input into the model. Choose one, create a vector together with another one for Q and feed into the PQ input port. It doesn't need to be a ramp, it can be a mat file, a MATLAB time series (from Workspace) or even an hand-drawn signal in the signal editor block!