Power Electronics
Traction inverters, motor control, and high-voltage power conversion for demanding applications.
We design the power electronics behind demanding machines: traction inverters, motor controllers, and high-voltage converters up to 1000V. It is backed by the decade our principal engineer spent leading the embedded software on programs that move Disney monorails, powered a 240 mph land speed record, and run across rail, marine, aerospace, and defense. When efficiency, reliability, and safety under full load are non-negotiable, that is the experience we bring.
Power that holds under full load. A decade of high-voltage, high-power systems, from control algorithm to power stage, proven in the field.
Featured Projects
NASA Electric Aircraft Testbed
High-power motor control · 1000VDC dyno testing
NASA's electric aircraft research (NEAT) needed to push GVM Parker traction motors hard on the test stand, at 1000VDC, and squeeze more out of the control that drives them. Aircraft propulsion leaves no room for a drive that runs hot, wastes energy, or loses control at the edge of its envelope.
Our principal engineer worked the high-power motor controller and improved the NEAT control algorithms, validated on the Parker dyno at full voltage under real load. The result fed directly into NASA's electric aircraft propulsion research, the kind of program where the hardware simply has to perform.
- 1000VDC
- GVM Parker motors
- High-power motor control
- Dyno-validated
- NASA NEAT
Disney Monorail LVPS
Low-voltage power system for the monorail fleet, converting the 680V bus down to 37.5V.
ATS product page →
Disney Monorail Buck Inverter
Buck inverter for the monorail fleet, converting the 680V bus down to 300V.
ATS product page →
Alcatraz Ferry
Dual drive: a universal-source active battery charger and a 3-phase AC supply (house power).
ATS product page →
Venturi Buckeye Bullet 3
4x 800V, 460kW traction inverters for the 240 mph electric land speed record vehicle.
Active Rectifier
Grid-tied active front-end rectifier with unity power factor and bidirectional power flow.
ATS product page →
Locomotive Starter Inverter
Firmware for a 1200V, 1000Arms engine-starter inverter: high-frequency injection for sensorless rotor position, making 3500+ Nm from a 72V bus to crank an EMD SD60 locomotive engine and retire its worn DC starter.
Watch the video →
Battery-Electric Semi-Truck EV Inverter System
Embedded software on TI C2000 DSPs for three drives on a battery-electric Class-8 semi: a 1200V/600A FOC traction inverter (induction motor, near breakdown torque, bus-adaptive), a 1200V/225A V/f auxiliary VFD, and a 1200V/100A brake chopper for regen it cannot return to the battery.
IGBT Fault Interrupter
Solid-state IGBT fault interrupter: faster than a fuse or breaker, with programmable trip conditions.
ATS product page →
Universal Source Active Battery Controller
A USABC-75 active battery charger and controller for mining equipment, running from any available input source.
ATS product page →
Knoxville / NJ Transit Auxiliary Inverter
60 hp auxiliary inverter for Knoxville and NJ Transit rail vehicles.
ATS product page →Power systems we build
Every kind of high-power conversion, DC to AC, DC to DC, and AC to DC. Each is a system type we design, shown with the programs where our principal engineer proved it in the field.
PM traction inverters
DC → ACVenturi Buckeye Bullet 3, NASA NEAT, Spirit of Lowcountry
AC induction traction inverters
DC → ACBattery-electric Class 8 semi truck
AC induction propulsion inverters
DC → ACGee's Bend ferry
Universal-source active battery chargers
AC/DC → DCAlcatraz ferry, mining vehicle
Variable frequency drives (VFDs)
DC → ACNFTA streetcar inverter, Knoxville inverter, NJ Transit 1500V inverter, Disney monorail buck inverter, semi-truck AC supply
DC-DC converters
DC → DCDisney monorail low-voltage supply, semi-truck brake chopper
Active rectifiers
AC → DCGrid-tied active front end with unity power factor
IGBT fault interrupters
ProtectionSolid-state fault isolation for high-power DC buses
Closed-loop control on any feedback
Including zero-speed sensorless start by high-frequency injection, proven on the AR11 locomotive engine starter.
Why it is low-risk to hand this to us
Choosing who builds your power electronics is a big decision, on expensive, safety-critical hardware. Here is what takes the risk off the table.
🛡️ Proven at high power and high voltage
Inverters and drives from 10kW to multi-MW, up to 1000V. Our principal engineer has taken them from bench to years of field service across rail, marine, aerospace, and defense.
📐 Certifiable to your standard
Our principal engineer is EN 50128 certified, with ISO 26262 and functional-safety experience on transportation and defense programs.
🔧 Algorithms and power stage, one team
We design the control software and the power hardware together, tuned on real hardware and a dyno, not just in simulation.
⚙️ Control that holds under load
Field-oriented, V/Hz, and vector control for PMSM, induction, and stepper motors, under real current and thermal stress.
⚡ Protection built in
Overcurrent, overvoltage, and thermal schemes that catch a fault in microseconds without nuisance-tripping mid-run.
↩️ Rescue and bring-up
A stalled drive program or an untuned inverter is familiar ground. We get it stable, safe, and performing.
How we work
A clear path from requirements to production, working directly with you and your hardware, start to finish.
Scope and de-risk
We dig into the requirements and the operating envelope up front, and find the hard parts early, before they get expensive.
Prototype and bench
Power-stage bring-up and the control loop running on real hardware: currents, voltages, and thermals under control.
Integrate and harden
Protection schemes, edge cases, and safety work, so it survives the field and not just the lab.
Validate and deliver
Dyno and bench validation under real load, documented and proven, ready for production.
Salvatorre is a solutions company. We develop your solution, deliver it working and proven, and stay behind it, so you get a result and a long-term partner rather than a one-off drop. Every engagement is scoped and quoted to the work.
What it costs
Rough starting points by system complexity. Every project is scoped and quoted to the work, with the engagement model that fits.
Control & Design
from $15,000
Algorithm design, simulation, and tuning, or a design review of an existing drive.
- ✓ Field-oriented or vector control design
- ✓ Simulation and modeling (Simulink, PSIM)
- ✓ Design review and control tuning
- ✓ Bench validation
Full Inverter or Drive
from $60,000
A complete motor controller or converter, control and power stage, validated on the bench.
- ✓ Everything in Control & Design
- ✓ Control software and power stage together
- ✓ Protection schemes (overcurrent, overvoltage, thermal)
- ✓ Dyno and bench validation
- ✓ Production-ready deliverables
Traction / HV System
from $150,000
A high-power, high-voltage system with functional safety and full integration.
- ✓ Everything in Full Inverter or Drive
- ✓ High-voltage design up to 1000V
- ✓ Functional-safety process (EN 50128 / ISO 26262)
- ✓ Regenerative braking and energy recovery
- ✓ System integration and field support
Frequently asked questions
What power and voltage levels do you work with? +
From 10kW to multi-MW, up to 1000V. Traction inverters, motor drives, DC-DC converters, active rectifiers, and battery chargers.
Do you do the control software and the power hardware, or just one? +
Both. The control algorithms and the power stage are designed together and tuned on real hardware, so there is no gap between them.
Can you work to a functional-safety standard? +
Yes. EN 50128 certified for railway software, with hands-on ISO 26262 and functional-safety experience on transportation and defense programs.
Can you take over or tune an existing drive? +
Yes. Bringing up an untuned inverter or fixing a drive that will not behave is a large part of what we do.
Do you test on real hardware? +
Always. Dyno, bench, and instrumented testing under real current and thermal load, not just simulation.
Can we sell it as our own product? +
Yes. We can white-label the drive or inverter, so it ships under your name and you bring it to market. We handle the engineering and keep supplying and improving it, so you get a product to sell without a power-electronics team of your own.
How do you price the work? +
See the tiers above for rough starting points by complexity. Every project gets a firm quote once we scope it, as a fixed-scope engagement. No surprises once we start.
Let's build The Next Big Thing together! 🚀
Whether you need embedded software, PCB design, or a full product development partner, we're here to help.
