Analysis on the Harmonic Components of Torque Characteristics of Single Phase Single Stator Small Size Brushless DC Permanent Magnet Motor: Series and Parallel Magnetic Circuit

作者：Firdaus R N^*; Norhisam M; Aris I; Mariun N; Nirei M; Wakiwaka H

来源：International Review of Electrical Engineering, 2012, 7(5): 5413-5424.

• Single Stator
• Brushless DC Motor
• Series Magnetic Circuit
• Parallel Magnetic Circuit
• BLDC
• Harmonic Components

This paper present the analysis on harmonics components of torque characteristics of single phase single stator small size Brushless DC permanent magnet motor (BLDC). The main objective of this paper is to analyze the harmonic components of the torque characteristics due to optimal air gap flux density and proposed serial magnetic circuit as alternative to parallel magnetic circuit in this BLDC. A sinusoidal torque characteristic is evolved by varying the taper parameter. Finite Element Analysis (FEA) is used to simulate the torque characteristics based on various combinations of taper parameters. The result shows that minimum value of THD can be found by optimizing the width of slot and rotor. Also it is found that with reducing height of stator teeth a smoother torque waveform can be achieved. The proposed series magnetic circuit improves the magnetic energy distribution and thereby more torque is being produced. For extensive evaluations, torque density on the proposed series and parallel magnetic circuit are compared with a fabricated motor. Finally, this paper shows the advantages of using serial magnetic circuit and the possibility of choosing the taper parameter in designing this kind of BLDC.

• 出版日期2012-10