Method of Open Switch Fault Detection in Three Phase Inverter Using Artificial Neural Network

Abstract:In power electronics applications, three phase inverter plays very important role. The performance of inverter degrades because many types of faults occur in it. Open circuit transistor fault is one of the possible faults in inverter. To improve reliability and performance of inverter, knowledge of fault mode is extremely important. This paper presents method of detecting open circuit transistor fault. In this entropy is used for feature extraction and artificial neural network is used to detect fault. This method is able to detect single as well as multiple switch faults. It not only detects faults but also identifies faulty switches. Simulation results are discussed. Keywords:Three phase PWM inverter, power electronics, open circuit transistor fault, artificial neural network. I