Literature review of Brushless Direct CurrentMotors Topologies and its Applications

Abstract—
Abstract – In industrial applications and
electric vehicles BLDC (Motors) are being used.
This paper represents categorization of BLDC
motor & applications. Preliminary design of
AFM as well as RFM BLDC motor along
with mathematically design equations further
implemented to form generalized flowchart.
Keywords—
component; – Brushless direct current
(BLDC) motor, Axial flux machine, Radial flux
machine
I. Introduction
Using of Permanent Magnet in electrical
machines have many benefits and advantages
then electromagnetic excitation These machines
have zero excitation losses resulting in high
efficiency, simple construction, low cost, less
maintenance and high torque or high output power
per unit volume. In early 19th century permanent
magnet excitation system was used for first time
in electrical machines. The performance of this
machine was very poor due to poor quality of
hard magnetic material. After the invention of
alnico the use of permanent magnet excitation
system increased. Rare earth permanent magnets
improve the power density and dynamic
performance of the machine. Induction motors
are most popular machine in the 20th century due
to its simple construction, less price, reasonable
reliability and low maintenance. Due to small
air gap, lower efficiency and low power factor
than synchronous machine made synchronous
machine prevalent in industrial applications. Due
to high power to weight ratio, high torque, good
dynamic control for variable speed applications,
absence of brushes and commutator make
Brushless dc (BLDC) motor [1]best choice
for high performance applications.