Solid State Transformer
HIL Testing Solutions
Scale Seamlessly From Module to Full SST, Without Losing Fidelity
Solid State Transformer HIL Solutions
Solid-state transformers combine multi-stage topologies, SiC switching above 100 kHz, and operating voltages of 10 to 50 kV, conditions that make physical testing slow, expensive, and dangerous. As data center power demand accelerates and legacy transformer lead times stretch past a year, SST validation speed is becoming a bottleneck of its own. Every fault scenario left untested is a risk that follows the product into the field.
| The Risk Today | With Typhoon HIL |
|---|---|
| Firmware iterations require physical hardware at 10–50 kV | ✓ Full firmware validation on HIL, no hardware risk at any stage |
| Shoot-through and fault scenarios are too dangerous to test physically | ✓ Shoot-through, DC clamping, open- and short-circuit faults — safe and repeatable |
| Bugs found at power-up cost 10–100x more to fix | ✓ Defects caught in simulation, before hardware is ever powered |
| VHDL expertise and weeks of model setup before the first test run | ✓ Drag-and-drop SST model ready in under one day, no FPGA knowledge required |
| Multi-device setups introduce CPU-based latency and numerical instability | ✓ HSSL links HIL devices FPGA-to-FPGA, sub-microsecond solver-to-solver latency |
What Makes SST Validation Possible with Typhoon HIL
- Nanosecond-resolution switching: capture SiC and GaN dynamics at 3.5 ns, no custom VHDL required by using drag and drop components
- Safe fault injection: test shoot-through and DC clamping at full voltage, without touching power stage hardware
- Multi-device scaling: reach a full three-phase SST with sub-microsecond FPGA-to-FPGA latency
- Make prototype in a day, scale to whole system in a week: build every SST topology in days, not weeks
- Automated test campaigns: run parameter sweeps and regression testing without manual setup
One environment that scales from first model to full validation, without sacrificing fidelity, safety, or speed.
Why SST teams choose Typhoon HIL
SST simulation is a core use case, not an edge case. Serving 700+ customers since 2009.
Industry-leading 3.5 ns time step for resonant converters, resolves switching transients out of the box, no FPGA VHDL programming required.
Shoot-through and DC-side clamping faults, solver stable through every event.
Control design stage to firmware validation to deployment. One toolchain, no re-modeling.