How to use PSIM Simplified C Block sum function

Hallay

Hello expert

How to use sum function in PSIM Simplified C block?

Such like sum+=buffer[index].

index++;

if (index >= 10)

    index = 0;

Regards

RSGarciarivas

hello again @Hallay,

There are several ways of doing this and you can even avoid using C blocks, although these are a very efficient way of creating a moving average filter.

You can avoid using C code if you implement something like this:

Here, using unit delays to keep track of the latest 10 values and dividing over 10 to get the average at the end.

If you want to use a C block, you just have to define a mechanism for each to get executed, if you don't need it running at each time step and use an array as a buffer internally.

I implemented a simple edge detector for the block to run only at each rising/falling edge. Note that I used the standard C block because I was having a small issue declaring an array in the simplified C block, though you can try that on your side). This is the meaningful part of the code:

Both implementations will produce very similar (although not identical) results:

This plot shows the moving average from the C block, the square wave that triggers the C block and the moving average from the sums and unit delays implementation.

movingAverage.psimsch

Hope these are useful examples! I'm attaching the model with both options for your reference.

Rafael