# T-NPC eHS HSCS Reference Simulation Model

**URL:** <https://community.opal-rt.com/t/t-npc-ehs-hscs-reference-simulation-model/243>\
**Category:** Models\
**Tags:** model, power-electronics, real-time, ehs, hardware-in-the-loop\
**Created:** [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")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Yue.Pan](https://avatars.discourse-cdn.com/v4/letter/y/ebca7d/32.png) [@Yue.Pan](https://community.opal-rt.com/u/Yue.Pan)\
**Post date:** [September 30, 2026, 12:25pm UTC](https://community.opal-rt.com/t/t-npc-ehs-hscs-reference-simulation-model/243/1 "2026-09-30T12:25:31Z")

</div>

![Featured](https://canada1.discourse-cdn.com/flex012/uploads/sps/original/1X/eac0fd70d7dacf3d89c4dc5d95f155568977e9db.png)

## 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 eHS HSCS (32 ns time step) is carried out to verify system steady-state characteristics and benchmark against offline SPS simulation.

## Key Features

- The model is simulated using the latest eHS HSCS solver. The minimum time step is 32 ns.

- The steady-state performance is presented below. These results are highly matched with SPS model results.

- Future upgrade version of this model will introduce the transient comparisons between eHS HSCS and SPS models.

- Note: OP48H30 is used for internal DIO loopback for this model. OP48H10 is also compatible, but user needs to configure/migrate the IO settings manually.

Simulation Results:

 ![HSCS TNPC results.png](https://canada1.discourse-cdn.com/flex012/uploads/sps/original/1X/47d23cdd1183e88056da8ccfb4e33985eb0ca15f.png)

## Model Specifications

| Parameter | Value |
| --- | --- |
| **Product** | eHS |
| **Simulation type** | Real-time |
| **Model version** | 3.5.11 |
| **Application** | Power Electronics |
| **Model file** | `TNPC_eHS_HSCS.zip` |
| **Recommended time step** | 32ns |
| **Known limitations** | Using FPGAscope please : ) |
| **Compatible hardware** | OP5020XG2, OP5025XG2, OP5033XG2, OP4815-IO, OP48H10, OP48H30 |

## Downloads

- [TNPC\_eHS\_HSCS.zip](https://community.opal-rt.com/uploads/short-url/i3EOuYBwwjBURv97Vup9srqmVpb.zip) — 17.5 MB