A MTPA control scheme for an IPM synchronous motor considering magnet flux variation caused by temperature

Author

Gubae Rang ; Lim, Jaesang ; Nam, Kwanghee ; Ihm, Hyung-Bin ; Kim, Ho-Gi

Author_Institution

Divi. of Electr. & Comput. Eng., POSTECH Univ., South Korea

Volume

3

fYear

2004

fDate

2004

Firstpage

1617

Abstract

In a hybrid electric vehicle (HEV), an interior permanent magnet (Nd-Fe-B) synchronous motor is widely used. However, the flux density of the Nd-Fe-B magnet is sensitive to the temperature variation. Particularly, in a HEV, the heat coming from internal combustion engine causes high temperature rise of the motor. It degrades the flux density and output torque. In this paper, a maximum torque per ampere (MTPA) control scheme for IPM motor is proposed considering the temperature dependence of the magnet field. With the use of an empirical look-up table, saturation effect is also considered. The effectiveness of the proposed control method is demonstrated through MATLAB/Simulink simulation and experiment.

Keywords

boron compounds; electric machine analysis computing; hybrid electric vehicles; internal combustion engines; iron compounds; machine control; magnetic fields; magnetic flux; neodymium compounds; permanent magnet motors; synchronous motors; torque control; MATLAB/Simulink; Nd-Fe-B; empirical look-up table; flux density; hybrid electric vehicle; internal combustion engine; magnet field; magnet flux variation; maximum torque per ampere control; permanent magnet synchronous motor; saturation effect; temperature variation; Degradation; Heat engines; Hybrid electric vehicles; Internal combustion engines; Magnetic flux; Permanent magnet motors; Saturation magnetization; Synchronous motors; Temperature control; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE

Print_ISBN

0-7803-8269-2

Type

conf

DOI

10.1109/APEC.2004.1296081

Filename

1296081