Title :
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
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;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE
Print_ISBN :
0-7803-8269-2
DOI :
10.1109/APEC.2004.1296081
