Wyniki wyszukiwania - BazTech

1

Multi-Step FEA-Based Design and Performance Analysis for a Single-Phase PM Brushless DC Motor

Petkovska Lidija, Cvetkovski Goga

Power Electronics and Drives

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2023

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Vol. 8 (43)

219-234

EN

In the article, an approach to design a novel single-phase permanent magnet (PM) brushless DC (BLDC) motor, based on multi-step FEA numerical prototyping, is presented. The designing procedure is carried out by using a series of 2D finite element simulations, until the design for a best performing PM BLDC motor is obtained. The proposed novel motor topology is developed using a generic motor, and through several steps, asymmetrical stator poles are devised, where one pair is particularly shaped. Permanent magnets are also simultaneously shaped. The aim of this research study is to improve performance characteristics of the motor by more efficient utilisation of active materials during the manufacture of rotor poles and stator cores. The magnetic field distribution in the motor crosssection, 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, providing a smooth overall performance of the PM BLDC motor.

2

Model bezszczotkowego silnika prądu stałego wykorzystany w analizie manipulatora równoległego

Hetmańczyk J., Sajkowski M., Stenzel T., Krykowski K.

Prace Naukowe Politechniki Śląskiej. Elektryka

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2014

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z. 4

67--78

PL

W artykule przedstawiono zmodyfikowany model bezszczotkowego silnika prądu stałego PM BLDC. W ocenie właściwości modelu wzięto pod uwagę charakterystyki statyczne i dynamiczne silnika oraz czasy wykonywania symulacji komputerowej. W analizie porównawczej wykorzystano pełny model silnika PM BLDC zawarty w programie Matlab/Simulink oraz model stałoprądowy.

EN

The paper presents modified model of permanent magnet brushless DC motor. The static and dynamic characteristics of the motor were taken into consideration in order to evaluate the developed model. In the comparative analysis, results of the mentioned characteristics were taken into account in case of the modified model and for typical DC motor model, available in Matlab/Simulink environment.

3

Comparative study of conventional and matrix converter fed brushless dc motor drive

Senthil-Kumar C., Senthil-Kumar N., Eswari M.

Przegląd Elektrotechniczny

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2013

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R. 89, nr 7

35--40

EN

The conventional DC link converters and matrix converters are used for driving a Brushless DC motor with trapezoidal back electromotive force. This paper deals with design of matrix converter for BLDC motor with the objective of lowering supply current harmonics. A comparative study of conventional DC link converter and three phase matrix converter are presented. It is to be noted that the conventional converters with DC-link requires two stages of conversion, whereas a matrix converter, in a single stage drives a BLDC motor. The proper switching of the matrix converter is designed and presented in this paper. By employing matrix converter, the ac source current becomes nearly sinusoidal and total harmonic distortion gets very much reduced. A matrix converter fed BLDC motor is simulated in MATLAB Simulink and results are shown to validate the harmonic reduction. The hardware implementation of the matrix converter is also discussed in this paper.

PL

W artykule zaprezentowano project przekształtnika macierzowego zastosowanego do zasilania silnika bezszczotkowego BLDC. Porównanokonwencjonalny przekształtnik DC z przekształtnikiem macierzowym trójfazowym. Przedstawiono wyniki symulacji.