Title :
New stand-still position detection strategy for PMSM drive without rotational transducers
Author :
Kim, Joohn Sheok ; Sul, SeungKi
Author_Institution :
Dept. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
This paper describes a new standstill rotor position detecting method for permanent magnet synchronous motor (PMSM) drives without any position sensors. Only two stator currents are required for rotor position detection and complete system operation. By injecting a test current with high frequency to the machine, the standstill rotor position can be detected with reasonable accuracy. The proposed method provides the maximum torque starting capability to the sensorless drive system by detecting the actual standstill rotor angle within ±10" error in electrical angle
Keywords :
electric drives; machine testing; machine theory; permanent magnet motors; position measurement; rotors; stators; synchronous motors; voltage measurement; HF test current; accuracy; electrical angle; maximum torque starting capability; permanent magnet synchronous motor drives; rotor angle; sensorless; standstill rotor position detection; stator currents; Circuits; Frequency; Friction; Magnetic sensors; Permanent magnets; Shafts; Signal processing algorithms; Stators; Torque; Transducers;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1994. APEC '94. Conference Proceedings 1994., Ninth Annual
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-1456-5
DOI :
10.1109/APEC.1994.316376
