E-journal for electrical and electronic engineers
AUTOMATYKA, ELEKTRYKA, ZAKLOCENIA
(AUTOMATICS, ELECTROTECHNICS, DISTURBANCES)
Vol. 4, Nr 3 (13) 2013
BLDC motors - construction and control
The paper presents basic constructions of BLDC motors and their main advantages in comparison with other motors. Their efficiency is higher about 10% than the efficiency of others in the group of motors powered up to 5kW. These motors are highly durable and reliable and are characterized by noiseless work . The structure of simple and cheap controlling device allowing for the change of rotational speed, the direction of rotation, braking and limitation of the current has been presented. The controlling circuit exploits information coming from hall and optic sensors to determine the position of the rotor. The manner of the placement of sensors and the influence of their position on the work of the whole system has been described at the end of this paper.
BLDC motor, construction, control