# \#hardware-in-the-loop **URL:** https://community.opal-rt.com/tag/hardware-in-the-loop/114.md [Latest](https://community.opal-rt.com/latest.md) · [Categories](https://community.opal-rt.com/categories.md) · [Tags](https://community.opal-rt.com/tags.md) --- ## [Current Signal Phase Shift Compensation in HYPERSIM](https://community.opal-rt.com/t/current-signal-phase-shift-compensation-in-hypersim/2512)
**Author:** [@Suved](https://community.opal-rt.com/u/Suved)\ **Replies:** 2\ **Last updated:** [October 24, 2026, 10:26am UTC](https://community.opal-rt.com/t/current-signal-phase-shift-compensation-in-hypersim/2512 "2026-10-24T10:26:08Z")
Hi, We are using OPAL-RT, HYPERSIM along with an OPAL-RT amplifier hardware for voltage and current signal generation. We have observed a phase shift of approximately 3° between the voltage and current channels when usi… --- ## [Guidance Needed: Building a Real-Time Digital Twin for a Variable Transmission System](https://community.opal-rt.com/t/guidance-needed-building-a-real-time-digital-twin-for-a-variable-transmission-system/248)
**Author:** [@AzzdenMeladi](https://community.opal-rt.com/u/AzzdenMeladi)\ **Replies:** 1\ **Last updated:** [October 16, 2026, 4:55pm UTC](https://community.opal-rt.com/t/guidance-needed-building-a-real-time-digital-twin-for-a-variable-transmission-system/248 "2026-10-16T16:55:38Z")
Hello everyone, I am working on a project involving a next-generation mechanical transmission system for wind turbines. I am interested in building a real-time digital twin to simulate its behavior under varying input c… --- ## [How to Check Which I/O Cards Are Installed in Your OPAL-RT Simulator](https://community.opal-rt.com/t/how-to-check-which-i-o-cards-are-installed-in-your-opal-rt-simulator/1010)
**Author:** [@sorfina](https://community.opal-rt.com/u/sorfina)\ **Replies:** 0\ **Last updated:** [October 16, 2026, 1:41pm UTC](https://community.opal-rt.com/t/how-to-check-which-i-o-cards-are-installed-in-your-opal-rt-simulator/1010 "2026-10-16T13:41:28Z")
How to Check Which I/O Cards Are Installed in Your OPAL-RT Simulator Why check your I/O cards? Your simulator’s I/O cards are how it talks to the outside world (analog and digital signals, communication, and so on). Th… --- ## [What is the difference between Ehs et HSCS?](https://community.opal-rt.com/t/what-is-the-difference-between-ehs-et-hscs/124)
**Author:** [@PFA007](https://community.opal-rt.com/u/PFA007)\ **Replies:** 5\ **Last updated:** [October 9, 2026, 6:50pm UTC](https://community.opal-rt.com/t/what-is-the-difference-between-ehs-et-hscs/124 "2026-10-09T18:50:51Z")
eHS — electric Hardware Solver eHS is OPAL-RT’s FPGA-based real-time solver for electric circuits. It automatically simulates power electronics and electrical networks on an FPGA without requiring users to write mathemat… --- ## [3-phase LLC eHS HSCS Reference Simulation Model](https://community.opal-rt.com/t/3-phase-llc-ehs-hscs-reference-simulation-model/244)
**Author:** [@Yue.Pan](https://community.opal-rt.com/u/Yue.Pan)\ **Replies:** 2\ **Last updated:** [October 8, 2026, 2:19pm UTC](https://community.opal-rt.com/t/3-phase-llc-ehs-hscs-reference-simulation-model/244 "2026-10-08T14:19:26Z")
Overview A starter reference model of three-phase LLC converter based on eHS HSCS solver. This is a three-phase LLC converter reference model using square-wave modulation, with resistive load. The primary three-phase… --- ## [A-NPC eHS HSCS Reference Simulation Model](https://community.opal-rt.com/t/a-npc-ehs-hscs-reference-simulation-model/242)
**Author:** [@Yue.Pan](https://community.opal-rt.com/u/Yue.Pan)\ **Replies:** 1\ **Last updated:** [October 7, 2026, 1:49pm UTC](https://community.opal-rt.com/t/a-npc-ehs-hscs-reference-simulation-model/242 "2026-10-07T13:49:06Z")
Overview A starter reference model of ANPC converter based on eHS HSCS solver. This is an ANPC converter reference model using carrier-based SPWM, with RL and BMF voltage source load. Real-time simulation via RT-LAB … --- ## [T-NPC eHS HSCS Reference Simulation Model](https://community.opal-rt.com/t/t-npc-ehs-hscs-reference-simulation-model/243)
**Author:** [@Yue.Pan](https://community.opal-rt.com/u/Yue.Pan)\ **Replies:** 0\ **Last updated:** [September 30, 2026, 12:25pm UTC](https://community.opal-rt.com/t/t-npc-ehs-hscs-reference-simulation-model/243 "2026-09-30T12:25:31Z")
Overview A starter reference model of TNPC converter based on eHS HSCS solver. This is a TNPC converter reference model using carrier-based SPWM, with RL and BMF voltage source load. Real-time simulation via RT-LAB e… --- ## [How can I connect an AI server and OPAL-RT](https://community.opal-rt.com/t/how-can-i-connect-ai-server-and-opal-rt/162)
**Author:** [@Vincent\_Jiang](https://community.opal-rt.com/u/Vincent_Jiang)\ **Replies:** 4\ **Last updated:** [August 18, 2026, 7:09pm UTC](https://community.opal-rt.com/t/how-can-i-connect-ai-server-and-opal-rt/162 "2026-08-18T19:09:50Z")
Does anyone know how to connect an AI server and OPAL-RT? The AI server can be modeled as an AI server, and the workload profile can be transferred to OPAL-RT. --- ## [What are the Power Electronic configuration supported with HSCS?](https://community.opal-rt.com/t/what-are-the-power-electronic-configuration-supported-with-hscs/125)
**Author:** [@PFA007](https://community.opal-rt.com/u/PFA007)\ **Replies:** 3\ **Last updated:** [August 14, 2026, 12:58am UTC](https://community.opal-rt.com/t/what-are-the-power-electronic-configuration-supported-with-hscs/125 "2026-08-14T00:58:34Z")
People are asking us, ok, what are the already supported configuration with HSCS, here is the full list : :battery: DC-DC Converters LLC Resonant Converter (Single-Phase & Three-Phase) — EV charging, On-Board Chargers … --- ## [Building scalable HIL test benches: OPAL-RT + NI hardware integration for electrified propulsion](https://community.opal-rt.com/t/building-scalable-hil-test-benches-opal-rt-ni-hardware-integration-for-electrified-propulsion/135)
**Author:** [@JefCintra](https://community.opal-rt.com/u/JefCintra)\ **Replies:** 1\ **Last updated:** [July 27, 2026, 9:51pm UTC](https://community.opal-rt.com/t/building-scalable-hil-test-benches-opal-rt-ni-hardware-integration-for-electrified-propulsion/135 "2026-07-27T21:51:38Z")
Sharing a general framework rather than a specific setup — this comes up often when scaling HIL benches for electrified propulsion (eVTOL, EV/HEV) and I think it’s worth discussing openly. When the goal is a scalable, D… --- ## [📥 Importing PSS/E Models into HYPERSIM](https://community.opal-rt.com/t/importing-pss-e-models-into-hypersim/127)
**Author:** [@PFA007](https://community.opal-rt.com/u/PFA007)\ **Replies:** 0\ **Last updated:** [July 21, 2026, 7:25pm UTC](https://community.opal-rt.com/t/importing-pss-e-models-into-hypersim/127 "2026-07-21T19:25:25Z")
Step-by-Step Create a new HYPERSIM model File → New → choose folder, name it, click Save Open the Network Import tool Network ribbon section → Network Import Select PSS/E as source format Provide the .raw file path …