Multi-Step FEA Based Design and Performance Analysis for a Single Phase PM Brushless DC Motor
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Ss. Cyril and Methodius University
Faculty of Electrical Engineering and Information Technology
Corresponding author
Lidija Petkovska   

Ss. Cyril and Methodius University
Power Electronics and Drives 2023;8 (43)
In the paper is presented an approach to design for a novel single phase permanent magnet (PM) brushless DC (BLDC) motor, based on multi-step FEA numerical prototyping. The designing procedure is carried out by using a series of 2D finite element simulations, until the design for best performing PM BLDC motor is obtained. The proposed novel motor topology is developed starting with a generic motor and, through several steps, asymmetrical stator poles are devised, where one pair is particularly shaped. The simultaneous shaping of the permanent magnets is applied, too. The target of this research study is to improve the motor performance characteristics, at more efficient utilisation of the active materials for manufacturing rotor poles and stator core. The magnetic field distribution in the motor cross-section along with several other relevant electromagnetic and electromechanical characteristics are computed, presented in figures and charts and analysed. The cogging torque and static torque waveforms, as well as the distribution of flux density and the air-gap flux, flux linkage and the induced back-emf, are in the focus of the presented research study. The results show that the novel design topology reveals featured operating characteristics, provid-ing a smooth overall performance of the PM BLDC motor.
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