Condition Monitoring and Fault Diagnosis Techniques of Electric Machines

摘要

From many decades electric motors are used in industries and to achieve better results in modern energy conversion industry the development and modernization of the electric motors is very necessary. Also, several types of motors are used in our day to day life for important services such as carriage, medical purpose, armed work, and to communicate. Therefore, it becomes very necessary to monitor the conditions of the motor continuously. However, due to the limited lifetime of a material, weakening of motor's components, contamination in parts, defects during manufacturing, or other damages during process, an electric motor can face serious problems. A sudden failure may lead to the loss of valuable human life or expensive machinery in the industry, which should be prohibited by precise spotting or continue monitoring of working condition of a motor. This paper presented a review on electrical and mechanical faults diagnosis methods used so far to improve the performance of motors and also helps to prevent the unnecessary replacement of motor's parts and suddenly shutdown the production unit.