Experimental Study of Faults Arising on a DC Brushed Shunt Motor

Abstract

Faults do sometimes occur in direct current (DC) electrical machines result in a very costly downtime and safety concerns. Brushed type DC motors are cheap and easy to install, thus maintain a significant presence in the automotive, aerospace, and home appliance industries. Despite the popularity, faults occur which make analysis and detection of faults very important. Since there are many types of machines and each type has its own behavior when a fault developed, so that only with considerable experience can the cause of failure be correctly identified from the symptoms alone. In this paper a various faults mechanisms of brushed DC shunt motor are presented experimentally. Experimental results demonstrated how DC shunt motor are affected by various faults during the operation. The experiment results can be used to prove the validity of any method for modelling based fault diagnosis, detection and fault confirmation in DC motor, especially in the laboratories that have shortage in equipment.