# Latest **URL:** https://forum.plexim.com/latest.md [Latest](https://forum.plexim.com/latest.md) · [Categories](https://forum.plexim.com/categories.md) · [Tags](https://forum.plexim.com/tags.md) --- ## [Welcome to PLECS User Forum! 👋](https://forum.plexim.com/t/welcome-to-plecs-user-forum/5)
**Author:** [@system](https://forum.plexim.com/u/system)\ **Replies:** 0\ **Last updated:** [July 4, 2024, 12:23pm UTC](https://forum.plexim.com/t/welcome-to-plecs-user-forum/5 "2024-07-04T12:23:09Z")
We are so glad you joined the PLECS forum - a place to discuss PLECS and related tools. Here are some things you can do to get started: :speaking\_head: Introduce yourself by adding your picture and information about yo… --- ## [RT-Box with "To-File"](https://forum.plexim.com/t/rt-box-with-to-file/3323)
**Author:** [@Yung](https://forum.plexim.com/u/Yung)\ **Replies:** 0\ **Last updated:** [September 22, 2026, 9:27pm UTC](https://forum.plexim.com/t/rt-box-with-to-file/3323 "2026-09-22T21:27:42Z")
I am trying to store a large set of SoC data using the TO-FILE. However, the RT-Box always disconnects after some time. I have tried adjusting these parameters but to no avail: --- ## [How to use script to run multiple AC sweep simulations?](https://forum.plexim.com/t/how-to-use-script-to-run-multiple-ac-sweep-simulations/879)
**Author:** [@Erick\_P](https://forum.plexim.com/u/Erick_P)\ **Replies:** 6\ **Last updated:** [September 22, 2026, 8:33pm UTC](https://forum.plexim.com/t/how-to-use-script-to-run-multiple-ac-sweep-simulations/879 "2026-09-22T20:33:16Z")
Hello, I would like to know if there is a way to use an script to run multiple AC sweep simulations in PLECS standalone. I want to be able to run an AC sweep simulation for multiple changes of a parameter. For example,… --- ## [Current Source Inverter (CSI) model with nanosecond overlap simulation](https://forum.plexim.com/t/current-source-inverter-csi-model-with-nanosecond-overlap-simulation/3319)
**Author:** [@Aure\_76](https://forum.plexim.com/u/Aure_76)\ **Replies:** 1\ **Last updated:** [September 22, 2026, 8:26pm UTC](https://forum.plexim.com/t/current-source-inverter-csi-model-with-nanosecond-overlap-simulation/3319 "2026-09-22T20:26:36Z")
Hello, I am looking for a recommended workflow or example model to run a Current Source Inverter (CSI) simulation on the RTBox for a Hardware-in-the-Loop (HIL) application. The setup uses GaN Bidirectional Switches (BDS… --- ## [How to simulate a device with known V-I Equation](https://forum.plexim.com/t/how-to-simulate-a-device-with-known-v-i-equation/674)
**Author:** [@calcupen](https://forum.plexim.com/u/calcupen)\ **Replies:** 3\ **Last updated:** [September 20, 2026, 11:34pm UTC](https://forum.plexim.com/t/how-to-simulate-a-device-with-known-v-i-equation/674 "2026-09-20T23:34:03Z")
I am trying to simulate a metal oxide varistor. Since PLECS does not have this component, I have tried simulating it with a C-script block, a function block, or a 1D lookup table block. Attached I have the circuit I have… --- ## [Multiple AC sweep simulation script](https://forum.plexim.com/t/multiple-ac-sweep-simulation-script/1336)
**Author:** [@Ernesto\_Incerti](https://forum.plexim.com/u/Ernesto_Incerti)\ **Replies:** 2\ **Last updated:** [September 19, 2026, 1:01pm UTC](https://forum.plexim.com/t/multiple-ac-sweep-simulation-script/1336 "2026-09-19T13:01:59Z")
I would like to run a multiple ac sweep simulation on a simple LCR circuit plotting phase in degree and gain in db with different values of L, i’ve found a way but i dont’ know how to modify the script to print the gain … --- ## [RT Box 3: PWM Phase Shift and Duty Cycle Incorrect in Real-Time Simulation](https://forum.plexim.com/t/rt-box-3-pwm-phase-shift-and-duty-cycle-incorrect-in-real-time-simulation/3318)
**Author:** [@Fish-of-Rhine](https://forum.plexim.com/u/Fish-of-Rhine)\ **Replies:** 1\ **Last updated:** [September 18, 2026, 11:59am UTC](https://forum.plexim.com/t/rt-box-3-pwm-phase-shift-and-duty-cycle-incorrect-in-real-time-simulation/3318 "2026-09-18T11:59:15Z")
We are experiencing an inconsistency between the offline PLECS simulation and the real-time simulation on an RT Box 3. The complete PLECS model will be attached to this post for investigation. Hardware / Software RT B… --- ## [Thermal model simulation of device junction temperature](https://forum.plexim.com/t/thermal-model-simulation-of-device-junction-temperature/3315)
**Author:** [@anjunpeng](https://forum.plexim.com/u/anjunpeng)\ **Replies:** 3\ **Last updated:** [September 17, 2026, 12:37am UTC](https://forum.plexim.com/t/thermal-model-simulation-of-device-junction-temperature/3315 "2026-09-17T00:37:52Z")
Hello, I have built a thermal simulation circuit for a single-leg H-bridge, using Infineon FF450R12ME7-B11 IGBT module. The simulation result shows that the IGBT junction temperature always stays around 30°C. I have trie… --- ## [Modeling discrepancy for induction machine depending on the solver type (FPGA vs. CPU)](https://forum.plexim.com/t/modeling-discrepancy-for-induction-machine-depending-on-the-solver-type-fpga-vs-cpu/3312)
**Author:** [@Jaeyeon.Park](https://forum.plexim.com/u/Jaeyeon.Park)\ **Replies:** 2\ **Last updated:** [September 16, 2026, 10:05am UTC](https://forum.plexim.com/t/modeling-discrepancy-for-induction-machine-depending-on-the-solver-type-fpga-vs-cpu/3312 "2026-09-16T10:05:39Z")
Test environment PLECS 5.0.4 and 4.9.9 are tested. (standalone) RTBOX3 with firmware 4.0.7 and 3.1.8 are tested. Dear Plexim My name is Jaeyeon Park, and I am a Ph.D. student at Seoul National University, South Korea… --- ## [Droop control Problem Simulation](https://forum.plexim.com/t/droop-control-problem-simulation/3266)
**Author:** [@henry\_01](https://forum.plexim.com/u/henry_01)\ **Replies:** 1\ **Last updated:** [September 15, 2026, 7:02pm UTC](https://forum.plexim.com/t/droop-control-problem-simulation/3266 "2026-09-15T19:02:22Z")
Hi everyone, I am building a three-phase grid-forming (GFM) inverter with an LCL filter in PLECS Standalone 5.0 for my undergraduate thesis. Despite strictly following standard cascading control rules and bandwidth sepa… --- ## [Three Phase Three Leg Transformer with Hysteresis](https://forum.plexim.com/t/three-phase-three-leg-transformer-with-hysteresis/3303)
**Author:** [@Anty](https://forum.plexim.com/u/Anty)\ **Replies:** 2\ **Last updated:** [September 15, 2026, 9:56am UTC](https://forum.plexim.com/t/three-phase-three-leg-transformer-with-hysteresis/3303 "2026-09-15T09:56:27Z")
Hi, Does anyone know if there is an existing three phase, three leg transformer model with hysteresis available in PLECS? I’m currently building one using the Magnetic Domain library for transformer energisation using … --- ## [If the phase shift is variable and the gate pulses are generated in Simulink, what is the recommended method to transfer/generate these phase-shifted gate pulses for a PLECS power circuit?](https://forum.plexim.com/t/if-the-phase-shift-is-variable-and-the-gate-pulses-are-generated-in-simulink-what-is-the-recommended-method-to-transfer-generate-these-phase-shifted-gate-pulses-for-a-plecs-power-circuit/3311)
**Author:** [@GoldenMaple93](https://forum.plexim.com/u/GoldenMaple93)\ **Replies:** 1\ **Last updated:** [September 15, 2026, 6:07am UTC](https://forum.plexim.com/t/if-the-phase-shift-is-variable-and-the-gate-pulses-are-generated-in-simulink-what-is-the-recommended-method-to-transfer-generate-these-phase-shifted-gate-pulses-for-a-plecs-power-circuit/3311 "2026-09-15T06:07:31Z")
I am simulating a resonant converter with MATLAB/Simulink control and a PLECS power circuit. The switching frequency is 100 kHz. I am generating the gate pulses in Simulink. I generate the phase-shifted gate signals by… --- ## [PLECS C code generation for PLC - Beckhoff TwinCAT or Codesys](https://forum.plexim.com/t/plecs-c-code-generation-for-plc-beckhoff-twincat-or-codesys/3314)
**Author:** [@lingvo](https://forum.plexim.com/u/lingvo)\ **Replies:** 0\ **Last updated:** [September 15, 2026, 5:52am UTC](https://forum.plexim.com/t/plecs-c-code-generation-for-plc-beckhoff-twincat-or-codesys/3314 "2026-09-15T05:52:29Z")
Hello there I would like to use Beckhoff PLC to execute generated C-code from PLECS Models in real-time. The advantage over RT Box would be that PLCs are compliant with industry standards and offer more interfacing opti… --- ## [CHB Inverter PWM Synchronization Issues with Two F28379D DSPs](https://forum.plexim.com/t/chb-inverter-pwm-synchronization-issues-with-two-f28379d-dsps/3299)
**Author:** [@MHz](https://forum.plexim.com/u/MHz)\ **Replies:** 8\ **Last updated:** [September 14, 2026, 6:40am UTC](https://forum.plexim.com/t/chb-inverter-pwm-synchronization-issues-with-two-f28379d-dsps/3299 "2026-09-14T06:40:49Z")
I am currently developing a Cascaded H-Bridge (CHB) inverter model and would like to evaluate the multi-channel PWM generation and synchronization capabilities using the two TI F28379D DSP boards. I have attached two PL… --- ## [Plecs Ti PWM Block Limitation](https://forum.plexim.com/t/plecs-ti-pwm-block-limitation/3305)
**Author:** [@JL2026](https://forum.plexim.com/u/JL2026)\ **Replies:** 1\ **Last updated:** [September 11, 2026, 6:08pm UTC](https://forum.plexim.com/t/plecs-ti-pwm-block-limitation/3305 "2026-09-11T18:08:51Z")
Hello, I am a graduate student working on a CSI simulation for my thesis. I’m trying to implement space-vector PWM for a three-phase current-source inverter using PLECS Coder with a TI C2000 target, and I have run into a… --- ## [Troubleshooting TI C2000 GFM inverter simulation](https://forum.plexim.com/t/troubleshooting-ti-c2000-gfm-inverter-simulation/3304)
**Author:** [@henry\_01](https://forum.plexim.com/u/henry_01)\ **Replies:** 1\ **Last updated:** [September 11, 2026, 5:52pm UTC](https://forum.plexim.com/t/troubleshooting-ti-c2000-gfm-inverter-simulation/3304 "2026-09-11T17:52:01Z")
Hello, I am conducting research related to GFM + droop control. The experiment involves PLECS functioning as the TI C2000 controller, which will act as a PWM controller to subsequently control the plant on the inverter … --- ## [Dual RT Box 3 Offline Simulation Divergence Issue with Two Parallel Single-Phase Cascaded H-Bridge Converters](https://forum.plexim.com/t/dual-rt-box-3-offline-simulation-divergence-issue-with-two-parallel-single-phase-cascaded-h-bridge-converters/3302)
**Author:** [@Fish-of-Rhine](https://forum.plexim.com/u/Fish-of-Rhine)\ **Replies:** 1\ **Last updated:** [September 9, 2026, 3:24pm UTC](https://forum.plexim.com/t/dual-rt-box-3-offline-simulation-divergence-issue-with-two-parallel-single-phase-cascaded-h-bridge-converters/3302 "2026-09-09T15:24:29Z")
I have developed a single-phase cascaded H-bridge converter model that runs successfully on a single RT Box 3. I am now extending this to a dual-system configuration where two identical single-phase cascaded H-bridge con… --- ## [Inquiry Regarding Hardware-in-the-Loop (HIL) Simulation Issues](https://forum.plexim.com/t/inquiry-regarding-hardware-in-the-loop-hil-simulation-issues/3239)
**Author:** [@Fish-of-Rhine](https://forum.plexim.com/u/Fish-of-Rhine)\ **Replies:** 8\ **Last updated:** [September 8, 2026, 1:42pm UTC](https://forum.plexim.com/t/inquiry-regarding-hardware-in-the-loop-hil-simulation-issues/3239 "2026-09-08T13:42:07Z")
Hello, I have developed a hardware-in-the-loop simulation model for a single-phase cascaded H-bridge converter. In this setup, the main circuit is executed on an RT-Box 3, while the control algorithm is deployed on a TMS… --- ## [Advice for teaching phasor domain using PLECS](https://forum.plexim.com/t/advice-for-teaching-phasor-domain-using-plecs/3300)
**Author:** [@Gabriele\_Lozito](https://forum.plexim.com/u/Gabriele_Lozito)\ **Replies:** 3\ **Last updated:** [September 8, 2026, 1:23pm UTC](https://forum.plexim.com/t/advice-for-teaching-phasor-domain-using-plecs/3300 "2026-09-08T13:23:25Z")
Hello, I’m considering using PLECS as a simulation environment to support an undergrad course in fundamental circuit analysis. PLECS is very well suited for teaching time-domain response, and of course handles DC resist… --- ## [Redefinition error](https://forum.plexim.com/t/redefinition-error/3293)
**Author:** [@Yogesh](https://forum.plexim.com/u/Yogesh)\ **Replies:** 3\ **Last updated:** [September 4, 2026, 6:16pm UTC](https://forum.plexim.com/t/redefinition-error/3293 "2026-09-04T18:16:19Z")
I have followed the installation steps described in the video in the link: Installing TI C2000 Target Support Package | Plexim I have successfully designed a small blink led design and its getting simulated in Plecs but… --- ## [Error While Running PLECS Model on RT Box](https://forum.plexim.com/t/error-while-running-plecs-model-on-rt-box/3296)
**Author:** [@DAWN](https://forum.plexim.com/u/DAWN)\ **Replies:** 1\ **Last updated:** [September 3, 2026, 9:58pm UTC](https://forum.plexim.com/t/error-while-running-plecs-model-on-rt-box/3296 "2026-09-03T21:58:25Z")
T型三电平整流器RT Box\_V1.plecs (231.0 KB) When running a PLECS model in the RT Box, an error occurred. After building the plant, the PLECS software reported a series of errors. After correcting the errors as indicated, the RT … --- ## [How to observe the perturbation signal when using Frequency Response analysis?](https://forum.plexim.com/t/how-to-observe-the-perturbation-signal-when-using-frequency-response-analysis/3285)
**Author:** [@physicboy](https://forum.plexim.com/u/physicboy)\ **Replies:** 3\ **Last updated:** [September 3, 2026, 4:28pm UTC](https://forum.plexim.com/t/how-to-observe-the-perturbation-signal-when-using-frequency-response-analysis/3285 "2026-09-03T16:28:53Z")
Hi, Just like the title, how to evaluate the perturbation signal when performance frequency response analysis? I tried putting scope on the perturbation source and nothing. I need to know the detail signal in my Sims a… --- ## [LAUNCHXL-F28069M Synchronize output through EPWMSYNCO](https://forum.plexim.com/t/launchxl-f28069m-synchronize-output-through-epwmsynco/2178)
**Author:** [@Camberlam](https://forum.plexim.com/u/Camberlam)\ **Replies:** 9\ **Last updated:** [September 3, 2026, 9:47am UTC](https://forum.plexim.com/t/launchxl-f28069m-synchronize-output-through-epwmsynco/2178 "2026-09-03T09:47:52Z")
Hello: I would like to use the same clock source for two boards. I found that the External Sync block can be used as the input for the PWM (Variable) block (as the synchronization impulse source). However, I couldn’t fi… --- ## [Understanding Analog Sampling](https://forum.plexim.com/t/understanding-analog-sampling/3289)
**Author:** [@sanksan](https://forum.plexim.com/u/sanksan)\ **Replies:** 2\ **Last updated:** [September 3, 2026, 7:36am UTC](https://forum.plexim.com/t/understanding-analog-sampling/3289 "2026-09-03T07:36:47Z")
Dear Concerned, I would like to understand the exact sampling mechanism. I have the following questions: If I select Global Settings, and depending on the Coder option settings, will all analog pins be sampled simultan… --- ## [Why is the waveform not properly downloaded to the analog output terminals?](https://forum.plexim.com/t/why-is-the-waveform-not-properly-downloaded-to-the-analog-output-terminals/3292)
**Author:** [@runxinYan](https://forum.plexim.com/u/runxinYan)\ **Replies:** 1\ **Last updated:** [September 3, 2026, 4:56am UTC](https://forum.plexim.com/t/why-is-the-waveform-not-properly-downloaded-to-the-analog-output-terminals/3292 "2026-09-03T04:56:44Z")
Dear PLECS Community, Hope this message finds you well. Sorry for the disturbance. I am currently working with the RT‑BOX and an oscilloscope for waveform output. In PLECS, I connected the voltage waveform to the Analog… --- ## [Mutual coupling between inductors](https://forum.plexim.com/t/mutual-coupling-between-inductors/3291)
**Author:** [@Ernesto\_Incerti](https://forum.plexim.com/u/Ernesto_Incerti)\ **Replies:** 3\ **Last updated:** [September 2, 2026, 10:08pm UTC](https://forum.plexim.com/t/mutual-coupling-between-inductors/3291 "2026-09-02T22:08:34Z")
How to simulate reciprocal mutual coupling between inductors (ex 3 or 4 different inductor)? are there some plecs specific simbols? --- ## [Load .mat file with string type variable](https://forum.plexim.com/t/load-mat-file-with-string-type-variable/3284)
**Author:** [@Paul](https://forum.plexim.com/u/Paul)\ **Replies:** 3\ **Last updated:** [September 2, 2026, 12:36pm UTC](https://forum.plexim.com/t/load-mat-file-with-string-type-variable/3284 "2026-09-02T12:36:53Z")
Hello, I want to load a .mat file in the initialization commands of my plecs simulation. Is it possible to load the file if it contains a string type variable (i.e. declared with config = “MMCA1” in matlab) ? When I t… --- ## [Request for Support: Error While Running PLECS Model on RT Box](https://forum.plexim.com/t/request-for-support-error-while-running-plecs-model-on-rt-box/3283)
**Author:** [@dilruba.cmeri22a](https://forum.plexim.com/u/dilruba.cmeri22a)\ **Replies:** 1\ **Last updated:** [September 1, 2026, 10:09am UTC](https://forum.plexim.com/t/request-for-support-error-while-running-plecs-model-on-rt-box/3283 "2026-09-01T10:09:19Z")
I am currently trying to implement and run my PLECS model on the PLECS RT Box, but I am facing an error during the process. It says " error in built step: make process timed out in 240 sec". Can anyone help me regarding … --- ## [Noise in frequency response plot](https://forum.plexim.com/t/noise-in-frequency-response-plot/3281)
**Author:** [@Praneeth](https://forum.plexim.com/u/Praneeth)\ **Replies:** 4\ **Last updated:** [August 28, 2026, 5:12pm UTC](https://forum.plexim.com/t/noise-in-frequency-response-plot/3281 "2026-08-28T17:12:06Z")
I am trying to get bode plot of LLC converter using Frequency Response tool. But the plot has a lot of noise. Can you please help me understand what is happening? Bode\_Plot.plecs (256.4 KB) --- ## [How to change simulation parameter via xml-rpc during simulation?](https://forum.plexim.com/t/how-to-change-simulation-parameter-via-xml-rpc-during-simulation/2857)
**Author:** [@vishweshgm](https://forum.plexim.com/u/vishweshgm)\ **Replies:** 5\ **Last updated:** [August 27, 2026, 7:24am UTC](https://forum.plexim.com/t/how-to-change-simulation-parameter-via-xml-rpc-during-simulation/2857 "2026-08-27T07:24:46Z")
Hi, I am using python xml-rpc to run simulation and use plecs.simulate() to start simulation. Once simulation start, until it ends, I am unable to send get&set parameter command. However if in model window, if I … [Next page](https://forum.plexim.com/latest.md?page=1)