Winding function method (WFM) provides a detailed and rather simple analytical modeling and simulation technique for analyzing performance of faulty squirrel-cage induction motors (SCIMs). Such analysis is mainly applicable for designing on-line fault diagnosis techniques. In this paper, WFM is extended to include variable degree of magnetic saturation by applying an appropriate air gap functio...

The use of efficient signal processing tools (SPTs) to extract proper indices for the fault detection in induction motors (IMs) is the essential part of any fault recognition procedure. The 2nd part of this two-part paper is, in turn, divided into two parts. Part two covers the signal processing techniques which can be applied to non-stationary conditions. In this paper, all utilized SPTs for n...

Experimental and modelling investigations of supercritical CO2 extraction oil from Argania spinosa L. kernels were conducted at pressure range 200 to 400 bar, temperature 313–333 K a flow rate 0.14 kg/h. Regardless the temperature, highest achievable yield was estimated 0.63 kgoil / kgbiomass. The kinetics modeled with Sovová’s broken intact cells model. type B found be most suited type. Argan ...

Rotor asymmetries in induction machines perturb many components such as, flux patterns and electromagnetic torque. The supervision of these signals enables early detection of such faults and help to machine diagnostic. This paper studies the detection of rotor imperfection by spectral analysis of the electromagnetic torque computed by two rotor flux estimators. In the first approach, the Kalman...

This paper proposes a new diagnosis algorithm to detect broken rotor bars (BRBs) faults in induction motors. The proposed algorithm is composed of a frequency signal dimension order (FSDO) estimator and a fault decision module. The FSDO estimator finds a number of fault-related frequencies in the stator current signature. In the fault decision module, the fault diagnostic index from the FSDO es...

High-efficiency motors are being gradually introduced in many industrial applications because of their positive impacts on the environment by reducing energy consumption and CO2 emission. In this respect, line start permanent magnet synchronous motors (LS-PMSMs) have been introduced recently. Due to their unique configuration, LS-PMSMs allow the obtaining of super premium efficiency levels, acc...

Motors are the higher energy-conversion devices that consume around 40% of global electrical generated energy. Induction motors most popular motor type due to their reliability, robustness, and low cost. Therefore, both condition monitoring fault diagnosis induction faults have motivated considerable research efforts. In this paper, a comprehensive review recent techniques proposed in literatur...