Numerical Analysis of Brushless DC Motor for Indoor High Volume Low Speed Fan

Abstract

This research paper is about the numerical analysis of the brushless DC (BLDC) motor for indoor High Volume Low Speed (HVLS) fans. The growing need for energy-saving products has increased the usage of HVLS fans in small and medium-sized interior spaces. However, the bulky motor design has limited the fan capability. This issue is often addressed by utilizing a high torque density motor solution, and the outer rotor BLDC motor is the optimum solution. Therefore, the objective of this research study is to conduct a numerical analysis of an Outer Rotor BLDC (ORBLDC) motor for HVLS application. The Finite Element Method (FEM) is used to determine the Stator Teeth Width ($W_{\text{stat}}$) and the configuration between Magnet Height ($H_{\text{mag}}$) and Stack Length ($L_{\text{stack}}$) via electromagnetic analysis approach. The final combination of 19 mm $W_{\text{stat}},\ 14$ mm $H_{\text{mag}}$ and 30 mm $L_{\text{stack}}$ produces the desired performance. In conclusion, this research paper discusses the ORBLDC motor design simulation and its performance. The simulation technique reduces the cost risk assessment and assists the motor designer in creating the best configuration model prior to fabrication.