Interaction of the third harmonic magnetic field with the third harmonic current in a five-phase synchronous reluctance motor (SynRM) can produce additional torque. However, it is still not clear about the SynRM power factor and its impact on the associated power converter because of the third harmonic components. Using time-stepping finite-element method, a mathematical model of the SynRM, whi...

This paper presents a cost-effective vector control strategy for four switch three phase (FSTP) inverter fed a synchronous reluctance motor with conventional rotor (SynRM) drive. The reduction of the number of power switches from six to four improves the cost-effectiveness, volume-compactness and reliability of the three phase inverters. In this paper, a simulation model of the drive system is ...

The synchronous reluctance motor (SynRM) has many advantages over other ac motors. For example, its structure is simple and rugged. In addition, its rotor does not have any winding or magnetic material. Prior to twenty years ago, the SynRM was regarded as inferior to other types of ac motors due to its lower average torque and larger torque pulsation. Recently, many researchers have proposed se...

The rotor design of Synchronous Reluctance Motors (SynRMs) has a large effect on their efficiency, torque density and torque ripple. In order to achieve a good compromise between these three goals, an optimized rotor geometry is necessary. A finite element method (FEM) is a good tool for the optimization. However, the computation time is an obstacle as there are many geometrical parameters to b...

This paper describes the robust optimal incremental motion control of a current  sensorless synchronous reluctance motor (SynRM), which can be specified by any desired speed profile. The control scheme is a combination of conventional linear quadratic (LQ) feedback control method and sliding mode control (SMC). A novel sliding switching surface is employed first, that makes the states of the Sy...

Energy efficiency is an essential aspect of motor technologies. The replacement conventional Single Phase Induction Motor (SPIM) by Permanent Magnet Synchronous (PMSM), Reluctance (SynRM), or Switched (SRM) for energy-efficient operation leads to high capital expenses. This paper presents a cost-effective design method improve the existing SPIM. It implements novel idea transforming it Line Sta...

The design and analysis of synchronous reluctance motor (SynRM) with a distributed type winding is an alternative to replace the permanent magnet motors (PMSM), which commonly used in electric vehicle applications. use SynRM eliminates need for magnets (PMs), reducing dependence on rare earth materials potentially lowering costs. In this paper, there are two approaches: new approach step-skewin...

This paper proposes a novel asymmetrical permanent magnet assisted synchronous reluctance machine (APMA-SynRM) with high cost performance, namely it has the advantages of torque performance and low cost. an rotor configuration featured by low-cost ferrite expensive NdFeB, two kinds material are placed asymmetrically on both sides “U”-shaped barriers, which causes magnet-axis-shift...

In the last decade, trend toward higher efficiency and torque density electrical machines (EMs) without permanent magnets (PMs) for industrial sector has rapidly increased. This work discusses latest research advancements in synchronous reluctance (SynRMs), being emergent motor topology gaining wide acceptance by many industries. article presents an extensive literature review covering backgrou...

A sub-optimal algorithm second-order sliding mode controller (SOSMC) was presented for a synchronous reluctance motor (SynRM) speed drive. SOSMC is an effective tool for the control of uncertain nonlinear systems since it overcomes the main chattering drawback of conventional sliding mode control. The practical implementation of SOSMC has simple control laws and assures an improvement in slidin...