Hi Everyone,
I want to do some testing using film capacitors in PLECS, but could not find the component in the library.
Could anyone please help me with any feedback on how to get a film capacitor in PLECS?
Kind regards,
Silpa
There is not a pre-made film-capacitor model in PLECS.
You can simply construct one out of the basic PLECS resistor, inductor, and capacitor components.
You will need to independently research on an appropriate model structure based on your modeling goals and information available from the vendors such as the datasheet. Note that some SPICE models for ceramic capacitors are simple RLC circuits you can replicate in PLECS.
Thank you @Bryan Lieblick for your help. I faced some errors when I connected four parallel film caps in the DC-link capacitor bank of inverter connected from a boost PFC. The following was my error (attached in the picture) as well as how I connected the film caps. Your feedback would be very helpful for my further simulation. Kind regards,Silpa
See the guidance on our website for this error message: https://www.plexim.com/support/solutions/165
Basically, conditions exist where there is no path for the ESL current to flow. What is connected at the AC side of the inverter?
Hi again,Yes, I saw this guidance but I am unsure how to correct this error.
Please find the attached picture of AC side.
Kind regards,
Silpa
Where does the ESL current flow when all AC side switching devices are off and the “Icapbank” current is negative? There is no available current path.
With a non-ideal switch the continuous inductor current will flow through the off resistance of the device leading to large voltage. You can model this by a “large” resistance in parallel with your AC side switches. This will slow the simulation down. Alternatively the ESL could have an equivalent parallel resistance, if that models something physical in your capacitor model.
I will check my simulation after adding a resistor in parallel to the ESL and hopefully it runs. Thanks Bryan.