Sensorless zero-speed torque
for PMSM drives
Start heavy loads without a rotor position sensor
Less wiring, fewer parts, fewer failure points
Pumps and starter-generator start events
Without a position sensor, many sensorless PMSM drives struggle to deliver high torque exactly at standstill — the moment your pump or starter needs it most.
Our rotor magnetic geometry creates different inductance in different directions — a "fingerprint" of rotor angle.
A small HF test signal is injected into the main windings (for a short time) during start.
Firmware reads the saliency response to estimate rotor angle → FOC can create torque immediately.
| Stator outer diameter: | 60 mm |
| Torque range (typical): | 3–5 N·m |
| Active magnetic length: | 31–53 mm (by magnet stack) |
| Status: | In production |
| Stator outer diameter: | 42 mm |
| Torque range (typical): | 0.5 N·m |
| Active magnetic length: | 22 mm (by magnet stack) |
| Status: | Prototype build |
Firmware is tuned for sensorless zero-speed start and smooth transition to normal operation.
High breakaway torque required immediately at start
High start torque is needed for a short window
Where removing the position sensor improves reliability