Title :
A Novel and Simple Inital Rotor Position Detecting Method for PMSMs
Author :
Sugawara, Jun´ichi ; Kaimori, Tomoaki ; Nishikata, Shoji
Author_Institution :
Dept. of Electr. Eng., Tokyo Denki Univ.
Abstract :
A new and very simple detecting method of initial rotor position for inverter-driven permanent magnet synchronous motors without any position sensors is proposed. The intended method is based on the large-and-small relationship between the maximum line-to-line emfs (electromotive forces) induced in the armature windings when two windings are excited by the DC voltage source for the inverter. According to this method, initial rotor position can be detected every 30 electrical degrees, which is enough accuracy to start up the motor without temporary reverse rotation. It is shown that the tested motor started successfully with the proposed method
Keywords :
invertors; machine windings; permanent magnet motors; rotors; starting; synchronous motors; DC voltage source; PMSM; armature windings; electromotive forces; inverter-driven permanent magnet synchronous motors; maximum line-to-line emf; motor starting test; position sensors; rotor position detecting method; Armature; DC motors; Inverters; Magnetic sensors; Pulse measurements; Rotors; Switches; Synchronous motors; Testing; Voltage; dc excitation; initial rotor position; motor drive; permanent magnet synchronous motor (PMSM); sensorless;
Conference_Titel :
Power Electronics and Drives Systems, 2005. PEDS 2005. International Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-9296-5
DOI :
10.1109/PEDS.2005.1619759
