Wykrywanie uszkodzeń uzwojenia wirnika przekształtnikowego układu napędowego z silnikiem indukcyjnym

In this paper possibilities of application the extended Kalman filter algorithm to rotor fault detection of induction motor fed by PWM inverter are presented. The induction motor condition is analyzed using estimated rotor resistance. The motor mathematical model of induction motor with rotor damage are described. The fault level is modeled by a change of a numbers of broken rotor bars. The algorithm of extended Kalman filter are presented. Rotor resistance as a additional electromagnetic state variables are selected. A detailed analysis of simulation and experimental results for induction motor with broken rotor bars in open and closed loop are presented. The simulations showed high accuracy and fast response of extended Kalman filter algorithm. The experimental proved theoretical assumption and demonstrated extended Kalman filter suitability to inverter fed induction motor rotor faults detection.