Open Science Research Excellence

Jung Moo Seo

Publications

3

Publications

3
7792
Development of Blower for Air Management System of Fuel Cell Modules
Abstract:
This study presents a blower for air management system of fuel cell modules. A blower is composed of BLDC motor and impeller. Magnetic equivalent circuit model and finite element analysis are used to design the motor, and an improved structure is considered to reduce a mechanical loss induced from bearing units. Finally, air blower system combined with the motor and an impeller is manufactured and output properties, such as an air pressure and an amount of flowing air, are measured. Through the experimental results, a validity of the simulated one is confirmed.
Keywords:
Fuel cell modules, BLDC motor, Impeller, Air management
2
9873
Feasibility Study of a BLDC Motor with Integrated Drive Circuit
Abstract:

A brushless DC motor with integrated drive circuit for air management system is presented. Using magnetic equivalent circuit model a basic design of the motor is determined, and specific configurations are inspected thanks to finite element analysis. In order to reduce an unbalanced magnetic force in an axial direction, induced forces between a stator core and a permanent magnet are calculated with respect to the relative positions of them. For the high efficiency, and high power density, BLDC motor and drive are developed. Also vibration mode and eccentricity of a rotor are considered at the rated and maximum rotational speed Through the experimental results, a validity of the simulated one is confirmed.

Keywords:
blower, BLDC, inverter
1
15918
A Study on Brushless DC Motor for High Torque Density
Abstract:
Brushless DC motor with high torque density and slim topology for easy loading for robot system is proposed and manufactured. Electromagnetic design is executed by equivalent magnetic circuit model and numerical analysis. Manufactured motor is tested and verified characteristics comparing with conventional BLDC motor.
Keywords:
Brushless DC motor, Robot joint module, Torque density, Pole/slot ratio