Squirrel-cage induction motors play an important role in the world’s industry. Hence there is a strong demand on their reliable and safe operation. Their faults and failures can lead to excessive downtimes and generate enormous costs due to reduced output, emergency maintenance and lost revenues. In this paper a FEM model of a three phase squirrel-cage induction machine is presented. It is used...

Linear modulation techniques (LMTs) of an asymmetrical six-phase machine (ASPM) with two isolated neutral points synthesize the desired voltage vectors by applying at least five switching states. Different choices applied vectors, sequences in which they are used, distribution dwell-times among redundant states give rise to a large number possible LMTs. It is desirable that these LMTs avoid mor...

Six Sigma is a strategy for achieving process improvement and operational excellence within an organization. Decisions on critical parameter selection in analysis phase are always very crucial; it plays a primary role in successful execution of Six Sigma project and for productivity improvement in manufacturing environment and involves the imprecise, vague and uncertain information. Using a cas...

A novel low-cost drive with a single-phase induction machine for HVAC applications that can operate at either full or reduced speed is proposed. An experimental drive based on the presented setup has been developed and built to verify its practical viability and properties. The paper presents results of investigation obtained by means of numerical simulations as well as experiments and discusse...

Multi-phase (more than three phases) drives possess several advantages over conventional three-phase drives such as: reducing the amplitude and increasing the frequency of torque pulsations, reducing the rotor harmonic currents, reducing the current per phase without increasing the voltage per phase, lowering the dc link current harmonics and higher reliability. By increasing the number of phas...

The development of new control techniques for multiphase induction machines (IMs) has become a point great interest to exploit the advantages these compared three-phase topology, example, reduced phase currents and lower harmonic contents. One most analyzed is model-based predictive current (MPC) with finite set. This technique presents high x–y because application one switching state throughou...

In this paper, a fault-tolerant three-phase induction drive based on field-oriented control is studied, and an analytical approach proposed to elucidate the limitations of FOC in flux-torque regulation from controller perspective. With open-phase fault, disturbance terms appear reference frame degrade performance when operating d-q plane with DC quantities. addition, hardware reconfiguration, w...

This paper presents a topology for the brushless operation of wound-rotor synchronous machine based on subharmonic excitation technique by using two sets multi-pole windings armature as well rotor. The consist four-pole three-phase main winding and two-pole single-phase additional winding, responsible generation fundamental components magnetomotive force (MMF), respectively. rotor contains fiel...