Kontrola klatek wirników silników indukcyjnych z wykorzystaniem czujników magnetorezystancyjnych

The paper presents a measurement technique for detecting a squirrel cage of induction motor faults (broken rotor bars). This method uses the magnetoresistors as a magnetic field sensors for a measure of magnetic field distribution near the rotor surface. These sensors are much more sensitive then wide known Hall's sensors. Some cases of the rotor faults computers simulations are also presented. The results of the measurement are presented as 3-dimension pictures of the magnetic field distribution along the rotor circumference.