Title :
Switching Frequency Optimize and Fuzzy Logic Based Direct Torque Control of Permanent Magnetic Synchronous Motor
Author :
Yifa, Sheng ; Shouyi, Yu ; Zhennan, Hong ; Jinsheng, Gao
Author_Institution :
Central South Univ., Changsha
Abstract :
The relation among motor speed, torque hysteresis band width and switching frequency was analyzed, and switching frequency optimize means was proposed. In order to improve the system stability and raise the response speed, fuzzy logic based direct torque control for a permanent magnet synchronous motor (PMSM) was put forward. In this scheme, zero voltage space vectors are introduced to simplify fuzzy control rulers. Simulation results show that the flux locus of the fuzzy direct torque control is more approximatively a circle by switching frequency optimize and fuzzy control, and the rotational speed can reach up to as table value quickly and the torque for the proposed scheme can change smoothly.
Keywords :
fuzzy control; machine control; permanent magnet motors; stability; synchronous motors; time-varying systems; torque control; direct torque control; flux locus; fuzzy logic control; permanent magnetic synchronous motor; switching frequency; torque hysteresis bandwidth; zero voltage space vectors; Fuzzy control; Fuzzy logic; Hysteresis motors; Magnetic analysis; Magnetic flux; Magnetic hysteresis; Permanent magnet motors; Switching frequency; Synchronous motors; Torque control; Direct Torque Control; Fuzzy Logic Control; Permanent Magnetic Synchronous Motor; Switching Frequency Optimize;
Conference_Titel :
Control Conference, 2007. CCC 2007. Chinese
Conference_Location :
Hunan
Print_ISBN :
978-7-81124-055-9
Electronic_ISBN :
978-7-900719-22-5
DOI :
10.1109/CHICC.2006.4347154
