An optimized method based on maximum torque-per-ampere control for permanent magnet synchronous motor

Author

Le Yang ; Kexun Yu ; Qilin You ; Qingming Xin

Author_Institution

State Key Lab. of Adv. Electromagn. Eng. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

2014

fDate

22-25 Oct. 2014

Firstpage

34

Lastpage

36

Abstract

The paper presents an optimized control method of permanent magnet synchronous motor (PMSM) based on maximum torque-per-ampere (MTPA). Since it exists a complex nonlinear relation between the d, q axis current and the torque in PMSM, an optimized curve-fitting method is introduced to simplify the nonlinear equations of d, q axis and the toque. Based on the approximation algorithms, a new speed-current double close-loop control model is established and comparing with the traditional I_d=0 and MTPA control, it balances stator current and responses quickly, and thereby improves system efficiency.

Keywords

approximation theory; closed loop systems; curve fitting; electric current control; machine control; nonlinear equations; optimisation; permanent magnet motors; synchronous motors; torque control; MTPA; PMSM; approximation algorithm; dq axis stator current; maximum torque-per-ampere control; nonlinear equation; optimized control method; optimized curve-fitting method; permanent magnet synchronous motor control; speed-current double close-loop control model; AC motors; Control systems; Equations; Mathematical model; Permanent magnet motors; Stators; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2014 17th International Conference on

Conference_Location

Hangzhou

Type

conf

DOI

10.1109/ICEMS.2014.7013446

Filename

7013446