Abstract—In the present paper, five electric current based methods to analyze electric faults on the stator of induction motors (IM) are used and compared. The analysis tries to extend the application of the multiple reference frames diagnosis technique. An eccentricity indicator is presented to improve the application of the Park’s Vector Approach technique. Most of the fault indicators are va...

Magnetic slot wedges are often used to improve starting performance of large induction motors. In this paper we have investigated – through simulation – the effects of the wedges on the performance characteristics of the motor and core losses under no load condition. Both analytical and hybrid two-dimensional field-circuit models have been used. In order to reliably establish the parameters of ...

Among the electro-mechanical devices transforming energy from electrical to mechanical, squirrel cage induction motor can be surely considered a workhorse of industry due its robustness, low cost, and good performance when directly fed by ac grid. Being most influencing topology in terms consumption, optimizing efficiency motors could lead great impact toward reduction human environmental footp...

In induction machines, an eccentrically positioned rotor experienced a strong unbalanced pull toward the short side of the air gap. The non-symmetric flux distribution due to the eccentricity induces circulating currents in the rotor cage and parallel branches of the stator winding. These currents equalise the flux distribution and reduce the unbalanced magnetic pull. In this paper, the effects...

The reduction of electromagnetic vibration and noise in three-phase squirrel-cage induction motors (IMs) has become very important from an environmental standpoint. However, the relationship between the radial distribution of the electromagnetic vibration and noise and the force wave that causes them has yet to be analyzed in sufficient detail. In this paper, we present the results of several e...

Recent research reveals that multi-phase motors in electric propulsion systems are highly recommended due to their improved reliability and efficiency over traditional three phase motors. This presented a comparison of optimal model design six squirrel cage induction motor (IM) for by using Genetic Algorithm (GA) Particle Swarm Optimization (PSO). A is designed simulated ANSYS Motor-CAD. In ord...

Induction motors are becoming familiar these days and is being employed in most of the industrial processes. This “Analyzing And Detection Of Rotor Faults In Squirrel Cage Induction Motor Drives Using Matlab” presents a simulation of detecting the rotor faults such as broken rotor bars or end rings in squirrel cage induction motor drives. It enables detection of those faults, which may arise du...

─ This paper presents an equivalent circuit derived directly from Maxwell's equations in a manner to show the amalgamation of field models and the circuit theory. A micro-T equivalent circuit is obtained from the solution of Maxwell’s equations for a cylindrical representation of a squirrel cage induction motor. First, a general form of the field solution is obtained using transfer matrices. A ...

Due to their reliability, robustness and simple construction squirrel-cage induction motors are widely used in industry. However, faults like broken rotor bars, rotor eccentricity, bearing and winding faults can occur during normal operation of the motor. Techniques for the detection of these faults have been researched since more than ten years. Although hundreds of papers are published year b...