Analysis of Open-Circuit Fault in Fault-Tolerant BLDC Motors with Different Winding Configurations

In this study, tests were carried out on a brushless permanent magnet DC motor with different winding configurations. Three configurations were compared: star, delta and combined star–delta. A mathematical model was constructed for the motor, taking into account the different winding configurations....

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Bibliographic Details
Published in:Energies (Basel) 2020-10, Vol.13 (20), p.5321
Main Authors: Korkosz, Mariusz, Prokop, Jan, Pakla, Bartlomiej, Podskarbi, Grzegorz, Bogusz, Piotr
Format: Article
Language:English
Subjects:
brushless direct current motor with permanent magnet (BLDCM)
Brushless motors
Configuration management
D C motors
delta
Efficiency
Electric motors
fault states
Fault tolerance
Finite element analysis
Fourier analysis
Fourier transforms
Laboratories
Magnetism
Mathematical models
Numerical analysis
Permanent magnets
star
star–delta
Unmanned aerial vehicles
Winding
winding configurations
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Summary:In this study, tests were carried out on a brushless permanent magnet DC motor with different winding configurations. Three configurations were compared: star, delta and combined star–delta. A mathematical model was constructed for the motor, taking into account the different winding configurations. An analysis of the operation of the motor in the different configurations was performed, based on numerical calculations. The use of different winding configurations affects the properties of the motor. This is significant in the case of the occurrence of various fault states. Based on numerical calculations, an analysis of an open-circuit fault in one of the phases of the motor was performed. Fast Fourier Transform—FFT analysis of the artificial neutral-point voltage was used for the detection of fault states. The results were verified by tests carried out under laboratory conditions. It was shown that the winding configuration has an impact on the behaviour of the motor in the case of an open circuit in one of the phases. The classical star configuration is the worst of the possible arrangements. The most favourable in this respect is the delta configuration. In the case of the combined star–delta configuration, the consequences of the fault depend on the location of the open circuit.
ISSN:1996-1073
1996-1073
DOI:10.3390/en13205321