HIL Test Engineer – BESS -18614

Duration: 11/19/26

Location: Remote

Own the Hardware-in-the-Loop (HIL) test platform validating control software for utility-scale Battery Energy Storage Systems (BESS). You’ll develop real-time plant models in Simulink, run them on Speedgoat at ~1 ms base rates, integrate with power plant controller PLCs over Modbus/TCP and DNP3, and automate requirement-based test suites with a focus on fast, deterministic controller validation (not microgrid stability studies).

Responsibilities:

Build & operate HIL rigs: configure Simulink Real-Time on Speedgoat, map I/O harness, and manage deterministic scheduling; optimize solver settings for ~1 ms steps.
Model the plant: create/maintain Simulink/Simscape Electrical models for PCS/inverter, filters/transformer, battery/BMS; validate model fidelity against bench/site data.
HIL simulation: connect Schneider M580 PLC to Speedgoat via Modbus TCP; verify commands, telemetry, time sync, alarms/events, and fail-safe sequences end-to-end.
Author requirement-based tests: derive MiL/SiL/HIL cases for power/VAR control, ramp-rate, freq/volt response, SoC management, thermal derates, ride-through, startup/shutdown, and fault scenarios.
Automate regression: implement scripted test suites with pass/fail metrics, waveform capture, and auto-reports; integrate with Git and CI workflows.
Defect lifecycle: analyze logs, isolate root causes across controller ↔ PLC ↔ plant model, file issues, verify fixes, and maintain full traceability (requirement → test → result).
Rig reliability & safety: maintain configs/calibrations/harnesses, implement health checks, and observe lab.

Minimum Qualifications

B.S./M.S. in Electrical/Controls/Power/Mechatronics or related field.
3–7+ years in embedded/controls test & validation with HIL.
Strong MATLAB/Simulink skills (Simulink Test, Simulink Real-Time; Simscape Electrical).
General programming/scripting experience (Python, VBA).
Hands-on Speedgoat experience at ~1 ms base rates (fixed-step solvers, rate transitions, task partitioning).
PLC integration experience; Schneider M580 familiarity preferred; understanding of IEC 61131-3 concepts.
Protocols: Modbus/TCP and DNP3 (command/telemetry, time-stamped events, buffers).
Version control with Git; comfort with code reviews and branching strategies.
Clear communication, root-cause analysis, and documentation skills.