A control scheme that utilizes the stator flux components as control variables, applied to a speed-sensorless induction motor drive, is presented. The proposed scheme allows the motor to exploit the maximum torque capability in the whole speed range, and shows a reduced dependence from the motor parameters. It is based on a control algorithm that decreases the d-component of the stator flux as soon as the requested voltage tends to overcome the available voltage. The control scheme produces a smooth transition into and out of the flux weakening region and preserves the torque dynamic. The feasibility of the flux weakening technique is confirmed by experimental tests.
A Robust Method for Field Weakening Operation of Induction Motor Drives with Maximum Torque Capability / D. Casadei; G. Serra; A. Tani; L. Zarri. - ELETTRONICO. - (2006), pp. 1-7. (Intervento presentato al convegno 2006 IEEE Industry Applications Conference, 41st Annual Meeting tenutosi a Tampa-Florida (USA) nel October 8-12, 2006).
A Robust Method for Field Weakening Operation of Induction Motor Drives with Maximum Torque Capability
CASADEI, DOMENICO;SERRA, GIOVANNI;TANI, ANGELO;ZARRI, LUCA
2006
Abstract
A control scheme that utilizes the stator flux components as control variables, applied to a speed-sensorless induction motor drive, is presented. The proposed scheme allows the motor to exploit the maximum torque capability in the whole speed range, and shows a reduced dependence from the motor parameters. It is based on a control algorithm that decreases the d-component of the stator flux as soon as the requested voltage tends to overcome the available voltage. The control scheme produces a smooth transition into and out of the flux weakening region and preserves the torque dynamic. The feasibility of the flux weakening technique is confirmed by experimental tests.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
