Help understanding transformers in simulink
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Eduardo Gutierrez Robles
el 27 de Jul. de 2022
Respondida: SALAH alatai
el 28 de Jul. de 2022
Hi, I'm currently working with an H-Bridge inverter but the results that I'm getting are weird.
To summarize my problem, when i connect a transformer to the H-bridge inverter my voltage behaves in a way that I'm not expecting.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1078725/image.png)
Figure 1.- output voltage of the inverter without connecting a transformer
When I connect the transformer this is what i get
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1078730/image.png)
Figure 2.- output voltage of the inverter connecting a transformer
And the voltage that the transformer outputs is
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1078735/image.png)
Figure 3.- voltage from the transformer.
This is something that intrigues me because when i run the same simulation on PSIM the results are different. Can anyone help me?, I'm trying to learn how to use simulink instead of PSIM since i read somewhere that it was more useful. Thanks in advacne
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1078740/image.png)
Figure 4.- Design
2 comentarios
Joel Van Sickel
el 27 de Jul. de 2022
Can your provide what the paramters for the transformer are? Also, can your provide a screenshot of what you expect from Psim? Your results don't necessarily look wrong for what you have in your model.
Regards,
Joel
Respuestas (2)
Dr Narayanaswamy P R Iyer
el 28 de Jul. de 2022
The results appears alright. The spikes in waveform could be due to inductance of transformer windings compared to their resistance i.e. L/R ratio. P.R. NARAYANASWAMY. DR. N P R IYER.
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SALAH alatai
el 28 de Jul. de 2022
The results appears fine.
Do not care about the spikes , it is due the inductance of the transformer.
So I believe is ok.
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