Condition Monitoring in Induction Motor by Parameter Estimation Technique

Abstract

This paper addresses a new approach for rotor parameter estimation of induction motors. Condition monitoring of electric motors avoids unexpected motor failures and greatly improves system reliability and maintainability. These are very important issues in motor-driven and power-electronics systems since they are very important issues in motor-driven and power-electronics systems since they can greatly improve the reliability, availability, and maintainability of the system. Induction motors are critical components in many industrial processes early fault diagnosis and Condition monitoring can increase machinery availability and performance, reduces consequential damage, prolong machine life (Mirahl et al., Condition monitoring of squirrel-cage induction motors fed PWM -based drives using a parameter estimation approach, 2004) [1], reduce spare parts and breakdown maintenance (Siddique et al., IEEE Trans. Energy Convers., 20:106–114, 2005) [2]. A reliable parameter estimation technique for induction motors is critical for the development of high-performance drive systems, and it can also be utilized for condition monitoring applications as well. An accurate parameter estimation technique can also be used for motor condition monitoring purposes. In this paper, a simple and reliable technique, based on parameter estimation methods, is introduced for rotor broken bar fault detection (Watson, The use of line current as a condition monitoring tool for three phase induction motors) [3].