Can we change parameters inside 'block parameters' of Ideal IGBT block?

Hello Team, I must actually simulate the aging condistions of a 3 pahse inverter.In my model ,i tried to change the block parameters like Eon and Eoff ,i have multiplied the vector with 2 ex: [0 2 3 4 300 600 800]*2. But nothing is affecting the efficiecny which I have calculated inside the scope block .Please check my model and offer me a solution or a way to age.I have then added a resistor of 1hm to show conduction loss, but the output voltage and current waveforms are changing drastically . My project is to have a reference model which works with high efficiency .For the same voltage and current waveforms,now I have to simulate an aged_model ,but now it must be a aging model with changing few parameters of power module and observe the drop in efficiency.with this info.,I am supposed to write a diagnostic algorithm.Please provide me a way to simulate this .I am stuck with no help.

Scope Block for efficiency Calculation

I have attached images and model .Please check.

Answer 1

[Antonino Riccobono]

Hi,

A little head-up on your task.

I see that you are calculating the efficiency by using Simulink blocks. Even though theoretically correct, you may want to explore a post-simulation function that is [efficiency, lossTable] = ee_getEfficiency('loadIdentifier',node,startTime,endTime). Please, refer to the doc page: https://www.mathworks.com/help/sps/ref/ee_getefficiency.html?s_tid=doc_ta

You'd need to enable Simscape logging first, then execute the function making sure that you pick startTime and endTime when you're system is in steady-state.

The good thing about using that function with the IGBT (Ideal, Switching) block is that it reports on conduction and switching losses separately enabling your aging studies especially on the switching losses.

FYI, this topic is covered in the training course I authored: https://www.mathworks.com/learn/training/power-electronics-control-design-with-simulink-and-simscape.html

Hope this helps,

Antonino Riccobono, PhD