Title :
A sensorless starting method for self-controlled synchronous motors without damper windings using a DC chopper in the exciter circuit
Author :
Okubo, Manabu ; Nishikata, Shoji
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Denki Univ., Tokyo, Japan
Abstract :
A sensorless starting method for self-controlled synchronous motors without damper windings is proposed. The proposed method is based on the fact that electromotive forces induced in the armature windings due to the change in field current depend on the rotor position of the motor, and a DC chopper circuit is used in the exciter field circuit to detect the rotor position. The usefulness of the proposed position detecting method without any sensor is demonstrated by experimental investigations.
Keywords :
choppers (circuits); machine windings; starting; synchronous motors; DC chopper circuit; armature windings; damper windings; electromotive forces; exciter field circuit; rotor position detection; self-controlled synchronous motors; sensorless starting method; Brushless motors; Choppers; DC motors; Rotors; Shock absorbers; Synchronous motors; Windings;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073524