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Thermal analysis and efficiency of an induction motor driven by a fault-tolerant multilevel inverter using FEM.
- Source :
-
COMPEL . 2015, Vol. 34 Issue 2, p573-589. 17p. - Publication Year :
- 2015
-
Abstract
- Purpose - The purpose of this paper is to present a comparative study of the thermal behavior and efficiency of an induction motor fed by a fault-tolerant Three-Level Neutral Point Clamped (3LNPC) inverter, under normal conditions as well as after a post-fault reconfiguration, following an open-circuit fault in the inverter. For this purpose, a Matlab/Simulink model and three-phase induction motor models using a finite element method (FEM) software were developed. Besides, some experimental tests were conducted for different values of the induction motor load torque and speed reference to validate the models. Design/methodology/approach - To assess the thermal behavior and efficiency of the motor, electromagnetic and thermal models using a FEM software were developed. The coupling with the inverter drive is accomplished through a developed model in Matlab/Simulink which also includes the control system. The simulation tests were performed for a healthy and faulty inverter at different operating points of the three-phase induction motor. To validate the FEM models some experimental tests were performed. Findings - When the inverter operates in reconfigured mode the motor losses are higher and consequently temperature is higher and the motor efficiency is lower. The developed models are an alternative to a more detailed study of the motor when fed by a 3LNPC inverter and consequent optimization of the control system. Originality/value - With the developed tools, a better understanding of the motor behavior and performance is gained, allowing to forecast scenarios and optimize fault-tolerant control strategies for the drive. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03321649
- Volume :
- 34
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- COMPEL
- Publication Type :
- Periodical
- Accession number :
- 102140344
- Full Text :
- https://doi.org/10.1108/COMPEL-08-2014-0222