Title :
A speed calculation method for induction motor based on voltage decoupling control principle
Author :
Yuenan, Zeng ; Duoshen, Feng ; Boshi, Chen
Author_Institution :
Res. Inst. of Electr. Machinery & Control Eng., Shanghai Univ., China
Abstract :
A new simplified equivalent model of an induction motor is proposed in this paper, which is derived from the voltage decoupling control principle of induction motors. The model consists of two subsystems, the rotor flux and torque current subsystems, and is identical to that of a DC motor. According to this model, a speed calculation method is presented for a speed sensorless vector-controlled induction motor drive system, which uses integration of the difference between the command of torque current and the torque component of stator current. The validity of the proposed method is verified by computer simulation results
Keywords :
control system analysis computing; electric machine analysis computing; equivalent circuits; induction motor drives; machine control; machine theory; parameter estimation; rotors; stators; variable speed drives; velocity control; computer simulation; induction motor drive; rotor flux subsystem; simplified equivalent model; speed calculation method; speed sensorless vector control; stator current torque component; torque current command; torque current subsystem; voltage decoupling control principle; Automatic voltage control; Automation; Induction motor drives; Induction motors; Machinery; Rotors; Sensorless control; Stators; Torque control; Voltage control;
Conference_Titel :
Power Conversion Conference - Nagaoka 1997., Proceedings of the
Conference_Location :
Nagaoka
Print_ISBN :
0-7803-3823-5
DOI :
10.1109/PCCON.1997.638239
