Abstract
Conventional DC motors are highly efficient and their characteristics make them suitable for use.However, their major drawback is that they need a commutator and brushes which are subject to wear and require maintenance. Today new technology is attempting to replace these components and reduce permanently these maintenance costs. When the task of commutator and brushes are replaced by solid-state switches, free maintenance motors are invented and the new motor called brushless DC motors emerged.This paper describes another motor which uses an electronic commutator substituting the mechanical commutator and brushes in the DC machine. This electronic commutator is formed with a series of static converters mounted along a bridge structure connected between the two rings and the windings of the machine. The polarities of the machine are obtained using two brushes in contact with the two rings. The control of the converter transistors is achieved by phototransistors controlled by two light sources replacing the brushes, so the sliding electrical contact between brushes and commutator was removed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Electrical Power and Energy Systems
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
