Title :
Fault detection and isolation on a PWM inverter by knowledge-based model
Author :
Peuget, Raphael ; Courtine, Stéphane ; Rognon, Jean-Pierre
Author_Institution :
Lab. d´´Electrotech., Inst. Nat. Polytech. de Grenoble, France
Abstract :
This paper presents an approach based on knowledge models to detect and isolate faults in a pulsewidth modulation inverter supplying a synchronous machine. These faults do not affect the system protection. A diagnosis system which uses only the input variables of the drive is presented. It is based on the analysis of the current-vector trajectory and of the instantaneous frequency in faulty mode. These two methods have been successfully applied to an experimental system
Keywords :
PWM invertors; electric machine analysis computing; fault location; knowledge based systems; synchronous motor drives; PWM inverter; current-vector trajectory; diagnosis system; drive input variables; fault detection; fault isolation; instantaneous frequency; knowledge-based model; pulsewidth modulation inverter; synchronous motor; Breakdown voltage; Capacitors; Circuit faults; Current measurement; Fault detection; Frequency; Input variables; Pulse inverters; Pulse width modulation inverters; Synchronous motors;
Journal_Title :
Industry Applications, IEEE Transactions on
