Sine Speed Reference Test under Sensorless Field-Oriented Control (FOC)

A 10-pole 1550KV electric ducted fan (EDF) was evaluated using a Servosila SC-120R Servo Drive. During the assessment, an electrical frequency of 1800Hz was achieved, corresponding to 21600 RPM. It turned out, the speed limit was reached due to the desktop power supply unit hitting its output power ceiling. Detailed lab testing to follow.

Such sine reference tests help validate the stability of sensorless motor control across the entire operational range, from zero to maximum speeds, as well as experimentally measure the control bandwidth to facilitate integration with upper-level control systems.