Smooth sensorless transition
Uses simple inductance identification and high-frequency voltage injection to solve the sensorless control failure of SynRMs in the low-speed, low-current region, enabling a smooth transition from I-f control to sensorless control.
Yibo, Guo · Pan, Lingyun · Yang, Yang · Gong, Yimin · Che, Xiaolei
Sensors 2024
Experimentally demonstrated on a 5.5 kW SynRM
Solves the near-zero extended back-EMF and flux problem in the low-speed, low-current region