Skip Voltage Update Flag:
This article aims to present usage of the “skip voltage update” flag in 2024. Let us consider a simple buck converter as an example to understand this feature. Here, we have made two similar buck converter circuits in which one circuit is with ideal switch and the other circuit is with thermal switch model as shown in following figure.
The following figure shows the parameters of thermal switch. In PSIM V2024, we can set “skip voltage update flag”.
If “skip voltage update flag=1”, then there is no update in the voltage, and it is like ideal switch results as shown in figure. But the difference is with thermal switch we can get losses.
If “skip voltage update flag=0”, then voltage will be updated as per the thermal characteristics and results are as shown in figure which are different from the circuit with ideal switch.
As per the example considered in this example, the thermal switch model is “C3M0060065J”. If we see its characteristics as shown in below figure, we can observe that as temperature changes, voltage will change. This is what we can observe in relation to “skip voltage update flag=0”.
In older versions of PSIM, there is no feature like this. This feature is available in PSIM version 2024. In general, if keep “skip voltage update flag=0”, then there may be possible oscillations in some sort of circuits. So, it is encouraging to set “skip voltage update flag=1” for most of the simulations, in which thermal losses are calculated at the same time the results are similar to circuit with ideal switch.
Learn More:
- Introduction to the Thermal Module - Altair Community
- Thermal Module Improvements | PSIM v12 - Altair Community
- Converter for thermal device xml files from PLECS to PSIM - Altair Community
- How to Couple PSIM and ElectroFlo for Accurate Thermal Simulations - Altair Community
Simulation File:
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