Title :
Voltage vector selection strategy of permanent magnet synchronous motor direct torque control system
Author :
Li Yaohua ; Liu Jingyu
Author_Institution :
Sch. of Automobile, Chang´an Univ., Xi´an, China
Abstract :
The basic control principle of direct torque control (DTC) for permanent magnet synchronous motor (PMSM) is to select the proper voltage vector to satisfy control demands of the amplitude of stator flux and torque. It is hysteresis control in nature. Voltage vector selection strategy as the hysteresis control principle determines control performance of system. In this paper, effects of voltage vector on the amplitude of stator flux, toque angle, excitation torque, reluctance torque and torque in PMSM DTC system are analyzed. Simplified expressions are given to express control principles of these variables are given and voltage vector selection area is proposed. Finally, a simply way to determine voltage selection area is given.
Keywords :
machine vector control; permanent magnet motors; stators; synchronous motors; torque control; voltage control; DTC; PMSM; basic control principle; control demands; direct torque control system; excitation torque; hysteresis control principle; permanent magnet synchronous motor; reluctance torque; stator flux amplitude; torque amplitude; torque angle; voltage vector selection strategy; Educational institutions; Electronic mail; Permanent magnet motors; Torque; Torque control; Vectors; Voltage control; Direct Torque Control; Permanent Magnet Synchronous Motor; Voltage Vector;
Conference_Titel :
Control Conference (CCC), 2013 32nd Chinese
Conference_Location :
Xi´an
