Test Earlier and Increase Coverage with Electric Vehicle Traction Inverter HIL

Electric vehicle powertrains are complex systems that require precise power-flow regulation to achieve just the right mix between efficiency, performance, and cost. Their very nature makes testing difficult: High power levels, temperature and age dependent performance, and high-speed switching power electronics to control nonlinear motor behavior. To further complicate matters for EV test teams, EV technology is still so new that what little design and test precedent exists is constantly changing.


NI HIL Test Systems Help You:


  • Quickly respond to rapidly evolving DUT and test requirements
  • Validate inverter switching control with high-speed (sub-µS) power electronics and motor models in FPGA
  • Implement standardized signal conditioning, loading, and fault insertion

EV Traction Inverter HIL Test System

  • Using a simulator instead of physical testing on a dynamometer lets you test sooner in the design process, test cheaper, and achieve greater test coverage.

  • Run and update models with <1 µs sample time on NI FPGA-enabled I/O cards in PXI and integrated through NI VeriStand with partner OPAL-RT’s Power Electronics Add-On.

  • Insert open, short, and ground hardware faults and simulate sensors and loads with NI SLSC while implementing software faults directly in the FPGA.

  • Manage data and test systems (software stack, utilization, alarming, and more) with SystemLink™ software.

Solution Advantages

“By adopting FPGA-based simulation using the NI hardware and software platforms, we achieved the simulation speed and model fidelity required for verification of an electric motor ECU. We reduced test time to 1/20 of the estimated time for equivalent testing on a dynamometer."

-Tomohiro Morita, Senior Engineer, HEV Design Department, Subaru

Build Your Solution with the NI Ecosystem

NI offers a variety of solution integration options customized to your application-specific requirements. You can use your own internal integration teams for full system control or leverage the expertise of NI and our worldwide NI Partner Network to obtain a turnkey solution.

NI Partner Network

The NI Partner Network is a global community of domain, application, and overall test development experts working closely with NI to meet the needs of the engineering community. NI Partners are trusted solution providers, systems integrators, consultants, product developers, and services and sales channel experts skilled across a wide range of industries and application areas.

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