eHS
eHS (electric hardware solver) is our FPGA-based power system and power electronics toolbox, designed to deliver unparalleled performance and high fidelity for real-time simulation. Its generic and reprogrammable electrical solver allows users to simulate circuits without the need for coding or advanced mathematical modeling. With its user-friendly interface, eHS streamlines hardware-in-the-loop (HIL) testing and supports advanced applications such as onboard chargers, solar inverters, power electronics, electric propulsion systems, and traveling wave relay testing.
Initially designed for MATLAB/Simulink™ users in 2012, eHS has since evolved to support several other industry-standard circuit editors, enabling flexible and accessible simulation workflows across diverse engineering environments.
Specification overview
| Features | Capabilities |
| Simulation type | Fast EMT on FPGA |
| Targeted applications | High flexibility workflow for most power electronics applications |
| Supported component types | Switches, converters, machines, RLC, transformers, lines, sources, among others |
| Component capacity per FPGA |
Overall capability:
|
| Minimum time step | 32ns |
| Maximum switching frequency | 500kHz** |
| Maximum sampling rate | 625ps with oversampling |
| Maximum number of parameters sets | Unlimited*** |
| Compatible circuit editors | Simscape Specialized Power Systems (SPS), PLECS, PSIM and OPAL-RT Schematic Editor |
*Estimated value. The maximum number of states depends on the number of inputs and outputs that need to be computed as well. There is no hardcoded limit.
**250kHz for resonant converter models and up to 500kHz for VSC applications. For higher requirements, slower than real-time modelling with parameter scaling is available, or a RT-XSG custom FPGA model implementation could be coupled with the eHS core.
*** Unlimited when using CPU buffered parameter sets. 512 when using FPGA buffered parameter sets.
They trust us
Demo
Bringing on-board charger (OBC) models to real-time
Watch a demo showcasing real-time simulation of an on-board charger (OBC) on an OP4610XG simulator. The OBC is composed of an AC-DC PFC converter and a DC-DC LLC resonant converter, with the power electronics devices being controlled using fast switching signals of up to 180 kHz.
Features
Redefining speed and accuracy of EMT real-time simulations
Our latest generation of eHS is faster and more efficient than ever before, allowing PWM switching frequencies as high as 500 kHz, supporting the most demanding of applications. Explore the highlights that will take your innovation to the next level.
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High fidelity
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Extra-high resolution
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Ultra-low latency
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Scalable and co-simulation ready
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Get started quickly
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Customize tests on the fly
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Advanced electric machines
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Traveling wave relay testing
High Speed Converter Solver
Validate the most advanced power converter designs, without compromises.
Push the boundaries of power electronics validation with the High Speed Converter Solver (HSCS), available within eHS. Designed for advanced converter architectures, HSCS enables real-time simulation of complex topologies—including resonant converters and systems with bidirectional switches—without the constraints of fixed models. Validate innovative designs in data centers, electric vehicle, and industrial applications faster, reduce model simplification, and confidently develop next-generation applications powered by GaN and SiC technologies.

Applications
Advancing your testing with eHS
eHS brings high-speed, FPGA-based simulation to a wide range of industries, including energy, power electronics, automotive, and aerospace. It supports applications such as onboard chargers, solar inverters, electric propulsion, motor drives, and protection relay testing. With its real-time capabilities, intuitive workflow, and unparalleled sampling resolution, eHS enables engineers and researchers to model complex power electronic systems, iterate rapidly, and validate designs with confidence.
Energy
Design, test, and optimize HVDC systems, renewables, and microgrids for grid modernization, stability, and protection—while supporting cybersecurity and resilience in increasingly digitalized power grids.
Power Electronics
Design, test, and optimize advanced power converters, motor drives, and control strategies with high-fidelity real-time simulation—ideal for applications in industrial automation and energy-efficient systems.
Automotive
Design, test, and optimize electric vehicle systems—including motor drives, battery management systems (BMS), electronic control units (ECUs), vehicle control units (VCU), and onboard chargers (OBC)
Aerospace
Design, test, and validate flight control systems, onboard power electronics, and more electric aircraft architectures—including eVTOL platforms—using real-time simulation for performance, safety, and system integration.
FAQ
Find the answers to your questions
What communication protocols do you support?
Consult our comprehensive list of supported protocols here: Communication Protocols



