New to PLECS so appreciate your help.
Trying to correct the Output Current waveform of a Grid-Connected T-Type Inverter fed by a PV System (Please refer to enclosed images). I added an LCL filter, with a small damping resistor in series with the capacitor, which cleaned the current ripple but didn’t do much to the waveform.
Could this be related more to the LCL filter parameter values or the Input current to the T-Type inverter from the PV System? Please advise and thanks in advance.
Are you able to post your model here?
Dear Kris,
I trust this email finds you well and apologies for my extremely late response. It’s been an interesting beginning of the year, which has kept me busy.
I think, at the time, I was interested in learning how to have PLECS calculate/verify ripple voltages and currents from the simulation and be able to export such results in a PDF or CVS/Excel format.
I haven’t quite figured it out yet, thus I appreciate your guidance and assistance.
I am enclosing the original T-Type Inverter I was working on, around December 2024 and it’s still work in progress on controls, as well as a simple Boost Converter, where I am trying to calculate those ripples again.
If possible, I’d like to know if PLECS can generate a comprehensive output report for simulations, including Voltage and Current Outputs (Max, Min, and Avg values), corresponding ripples, efficiency, etc.
I realize, based on reading some of your replies to other posts, that this is extremely basic for you, but I appreciate your help. Please advise and thanks in advance.
(attachments)
Assignment 2_Boost_Converter.plecs (16.1 KB)
ECEN 613_T_Type_Inverter, V good_JJG.plecs (537 KB)
Have you seen the additional responses from your previous (related) post: Ripple Voltage Measurement - #3 by Kamilruan ?
I am also attaching a simple prototype example model (PLECS Standalone) of how one can measure the min and max of a signal, extract the mean, and synthesize a ripple magnitude for it over time. But you can also do such analysis directly in code.
For creating reports you can either script the logic using a Simulation Script (inbuilt to PLECS Standalone), or externally via XML-RPC using, e.g. Python. Both of these options are documented in our manual. There are also demo models that show Efficiency calculations if you have thermal models included.
ripple_calculator_example.plecs (29.7 KB)