In the manufacture squirrel-cage rotors of asynchronous motors, a high standard quality is required in every part production cycle. The die casting process usually creates porosity rotor bars. This most common defect often remains hidden during entire assembly machine and only detected final testing motor, i.e., at end process. leads to unnecessary costs. Therefore, aim conduct continuous contr...

This paper has proposed and substantiated the application of an additional diagnostic parameter for assessing state stator windings induction motors during operation. The dependences values phase shifts between currents voltages have been obtained. These showed that when inter-turn short circuit occurs in windings, are same all phases motor. That made it possible to obtain dependence change shi...

The squirrel cage induction motor (IM) has many advantages over other types of electric technique (FOC), classical direct torque control (DTC), and with space vector modulation (DTC-SVM) is carried out. objective this paper to decouple the mechanical quantities such as flux in a way similar DC control. And also minimize IM. Torque oscillations can cause resonances consequently acoustic noise, h...

This paper proposes an Adaptive Neural Fuzzy Inference System (ANFIS) model for diagnosis of combined Inter Turn Short Circuit (ITSC) and Broken Rotor Bar (BRB) faults in a Squirrel Cage Induction Motor (SC-IM). The signal the stator current is obtained from really healthy faulty SC-IM. Experimental tests have been set up using 1.5 Hp/380 V three-phase SC-IM with different ITSC BRB under loadin...

Vector control is becoming the industrial standard for induction motor control. The vector control technique decouples the two components of stator current space vector: one providing the control of flux and the other providing the control of torque. The two components are defined in the synchronously rotating reference frame. With the help of this control technique the induction motor can repl...

Permanent magnet (PM) motors are rapidly replacing the squirrel cage induction for its energy efficient operation, smooth control and high power density. Although PM Motors efficient, they inherently affected by cogging torque ripple. Magnetic alignment between teeth of stator permanent rotors produce torque. Torque ripple is a dynamic oscillation during steady-steady operation which leads to v...

The squirrel cage induction motor is the most common means of converting electrical energy to mechanical energy. As such they form a very important part of modem industrial plants. Adverse service conditions may cause faults to develop within a motor that eventually result in the motor failing. If warning of an impending failure can be obtained, the motor can be scheduled for repair or replacem...

The paper presents an analysis of operating currents and torques during self-starting motors with a voltage 6 kV for cases short circuit in the head feeders from main step-down substation to most distant substations mining enterprises. For network under consideration, characteristic modes are: on buses shop substations. industry when selfstarting asynchronous squirrel-cage rotor synchronous sta...

The paper shows the implementation of simulation models an electromechanical energy converter on example induction motor with a squirrel-cage rotor in SciLab environment and its graphic library Xcos for building structural diagrams. Despite existence programs such as Simulink ANSYS Twin Builder, is completely free, which advantage use academic scientific research. being free significantly diffe...