Title :
Online temperature estimation of IPMSM permanent magnets in hybrid electric vehicles
Author :
Ding, Xiaofeng ; Liu, Jinglin ; Mi, Chris
Author_Institution :
Coll. of Autom., Northwestern Polytech. Univ., Xi´´an, China
Abstract :
The temperature-rise inside the magnets of interior permanent magnet synchronous motors (IPMSM) in a hybrid electric vehicle (HEV) caused by losses can lead to potential irreversible demagnetization. This paper presents an analytical model of online temperature prediction. Based on the relationship of the temperature and the magnets performance, the temperature of magnets is predicted through solving the equation of voltage, current, rotate speed and winding temperature in the model. The predicted temperatures of the model is validated by experiments when the motors operated by three phase sine supply. And the temperature rises observably under PWM inverter supply. Furthermore, the finite element analysis (FEA) simulation results give more confidence for the proposed estimators.
Keywords :
PWM invertors; finite element analysis; hybrid electric vehicles; permanent magnet motors; synchronous motors; FEA simulation; HEV; IPMSM permanent magnets; PWM inverter supply; current equation; finite element analysis; hybrid electric vehicles; interior permanent magnet synchronous motors; irreversible demagnetization; online temperature estimation; rotate speed equation; three-phase sine supply; voltage equation; winding temperature; Hybrid electric vehicles; Permanent magnet motors; Permanent magnets; Pulse width modulation; Synchronous motors; Traction motors; Windings; PWM; hybrid electric vehicle (HEV); irreversible demagnetization; permanent magnet synchronous motors (IPMSM);
Conference_Titel :
Industrial Electronics and Applications (ICIEA), 2011 6th IEEE Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-8754-7
Electronic_ISBN :
pending
DOI :
10.1109/ICIEA.2011.5975575
