The OPAL-RT Power Electronics Add-On for NI VeriStand is a powerful FPGA-based simulation tool for Hardware-in-the-Loop (HIL) testing of controllers for power electronics applications. The Power Electronics Add-On combines the performance of several leading floating-point FPGA solvers developed by OPAL-RT Technologies with an intuitive workflow integrated directly within the NI VeriStand software suite to create a scalable and flexible HIL test bench.

The Power Electronics Add-On contains many features, including:

The document is divided into the following primary sections:

  1. Getting Started: Outlines the software & hardware requirements of the Power Electronics Add-on and provides installation and licensing instructions. Refer to Getting Started with an Example Project to simulate your first electrical model within minutes. 
  2. Power Electronics Add-On Custom Device: A detailed description of each component, parameter, and channel in the Power Electronics Add-On.  This structure of sections mirrors the structure of the configuration tree in the Power Electronics Add-On to simplify navigation.
  3. Examples: This section provides examples that can be replicated, built, and modified as needed.  They can serve as a starting point to understanding the capabilities of the Power Electronics Add-On.
  4. How-To: A collection of articles and tutorials explaining how to perform common tasks in the Power Electronics Add-On.

NI VeriStand

NI VeriStand is an application software developed and maintained by NI that enables the configuration of simulation models, I/O channels, data logging, stimulus generation, and host communication for NI real-time hardware.  Although this document does not focus on the features of VeriStand, it is useful to understand the typical VeriStand workflow and out-of-the-box features.  For more information and resources, please see What is VeriStand?

The VeriStand environment includes the following major components:

Power Electronics Simulation Workflow

The FPGA-based solvers included in the Power Electronics Add-On can be used independently or combined to simulate nearly any power electronics or machine drive circuit in real-time, while maintaining a sample time below 1µs.

The solution provides a simple workflow for users:

  1. Design a power electronics circuit using a circuit editor supported by the eHS solver. See Supported Circuit Editors for a detailed list.
  2. Configure the simulation parameters.
  3. Deploy the Real Time application, which will in turn configure the OPAL-RT FPGA solvers.
  4. Connect a real or simulated controller directly to the IO of the selected NI hardware, provide stimuli, and acquire measurements.