Study on the use of zero voltage vectors in the PMSM DTC system

Author

Li Yaohua ; Ma Jian ; Liu Jingyu ; Yu Qiang ; Zhang Depeng ; Guan Jiawu ; Cai Hongmin

Author_Institution

Sch. of Automobile, Chang´an Univ., Xi´an, China

fYear

2011

fDate

22-24 July 2011

Firstpage

3559

Lastpage

3564

Abstract

Effects of zero voltage vectors on the amplitude of stator flux, torque angle and torque of permanent magnet synchronous motor (PMSM) direct torque control (DTC) system are studied. Due to voltage drop on stator resistance, the application of zero voltage vectors decreases the amplitude of stator flux. Due to the move of rotor flux, it decreases torque angle, furthermore, decreases torque. Thus it is wrong to for the switching table for the induction motor (IM) DTC system to use zero voltage vectors to increase the amplitude of stator flux and torque. As the application of zero voltage vectors can´t produce negative torque, when the PMSM operates as a brake, zero voltage vectors may make the DTC system out of order. Simulation and experimental results of the surface PMSM and interior PMSM DTC system are proposed to testify theoretical analysis.

Keywords

induction motors; machine control; permanent magnet motors; synchronous motors; torque control; direct torque control system; induction motor; rotor flux; stator flux; stator resistance; surface permanent magnet synchronous motor; switching table; torque angle; voltage drop; zero voltage vectors; Hysteresis; Hysteresis motors; Rotors; Stators; Switches; Torque; Voltage control; Direct Torque Control; Permanent Magnet Synchronous Motor; Zero Voltage Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference (CCC), 2011 30th Chinese

Conference_Location

Yantai

ISSN

1934-1768

Print_ISBN

978-1-4577-0677-6

Electronic_ISBN

1934-1768

Type

conf

Filename

6001356