COMPEL - The international journal for computation and mathematics in electrical and electronic engineering: Volume 33 Issue 5

Torque ripple and magnetic forces on teeth in IPM machines

The purpose of this paper is to investigate torque ripple and magnetic force on the teeth in interior permanent magnet (IPM) machines over a wide range of speed operation for…

On the investigation of the magnetic forces of CWPMM: Comparison between surface and interior PM topologies

The purpose of this paper is to investigate the magnetic forces generated by a 12 slot/10 pole concentrated winding PM machines, considering a comparative study between two…

Torque ripple analysis for IPM AC motors

The purpose of this paper is to investigate a new cause of torque ripple in interior permanent magnet (IPM) alternating current (AC) motors, which is common but has hardly been…

An approach to the sizing of electric motors devoted to aerospace propulsion systems

– The purpose of this paper is to deal with the design and optimization of permanent magnet synchronous motors (PMSM) devoted to aeronautic applications.

Influence of rotor design on performance of PM machines for heavy-duty traction applications

The purpose of this paper is to study the performance and efficiency of two different permanent magnet (PM) machine rotor configurations under magnetic core saturation conditions…

Air gap MMF based prediction of eddy current loss in the PMs of concentrated winding brushless machines

The purpose of this paper is to an analytical approach-based prediction of the eddy current loss in the PMs of a concentrated winding machine equipped with 12 slots in the stator…

Optimal design of synchronous reluctance machine : A feasible solution to eliminating rare earth permanent magnets for vehicle traction applications

The purpose of this paper is to present optimally designed synchronous reluctance machine (SynRM) to demonstrate the feasibility of eliminating the use of rare earth permanent…

Optimal design of low-cost IPM AC motor

The purpose of this paper is to present the optimal design of a low-cost interior permanent magnet (IPM) alternating current (AC) motor. It examines the influence of the permanent…

Comparative analysis of the SRM as an alternative to the PM motor for automotive applications

The purpose of this paper is to present comparative analysis of several configurations of the switched reluctance motor (SRM) for an in-wheel drive for a heavy-duty automotive…

Research on new hybrid excitation PM synchronous generators with tooth harmonic excitation

In order to keep the advantages of PM generators and eliminate its disadvantage – difficulty in regulating the magnetic field, hybrid excitation is an effective way. The purpose…

Vibration signature analysis for monitoring rotor broken bar in double squirrel cage induction motors based on wavelet analysis

The purpose of this paper is to present a diagnosis technique, for rotor broken bar in double cage induction motor, based on advanced use of wavelet transform analysis. The…

FEA-based investigation of the generating capability of a novel hybrid excited claw pole alternator with improved cost-effectiveness

The purpose of this paper is to investigate the generating capability of a novel hybrid excited brushless claw pole alternator (HEBCPA) with improved cost-effectiveness gained…

A coupled analytical-numerical approach for optimal sizing of power inductors

The purpose of this paper is to present an optimal sizing methodology. It is applied to a foil-coil powder core power inductor used in new generation inverters designed for hybrid…

Dual current control strategy to fulfill LVRT requirements in WECS

– The purpose of this paper is to investigate a control strategy to fulfill low-voltage ride through (LVRT) requirements in wind energy conversion system (WECS).

Challenges and lessons learned in the deployment of an offshore oscillating water column

The purpose of this paper is to disseminate the lessons learned from the successful deployment of a wave energy converter (WEC) and accelerate growth in the field of ocean energy…

Self-sustained all-electric wave energy converter system

The purpose of this paper is to describe the design and function of Fred. Olsen's wave energy converter (WEC) system Lifesaver with special focus on the stand-alone electrical…

DC-link voltage selection for a multi-MW wind turbine

The purpose of this paper is to investigate how the dc-link voltage for the converter of a wind generator should be selected, i.e. to determine the losses in the generator and the…

Stator voltage harmonics and unbalance compensation of the sensorless standalone doubly fed induction generator

Doubly fed induction generator (DFIG) is widely used in wind energy conversion systems and it can operate with other primary movers. The purpose of this paper is to focus on the…

Design, optimisation and application of a resonant DC link inverter for solar energy systems

– The purpose of this paper is to examine diminish switching losses in a solar energy conversion system in order to utilise the full efficiency of a solar panel.

A 2.5-D frequency-domain nonlinear computer model of coupled-cavity traveling wave tubes

The purpose of this paper is to present a 2.5-dimensional (2.5-D) frequency-domain nonlinear computer model for the beam-wave interaction of coupled-cavity traveling wave tubes…

Calculation of inrush current using adopted parameters of the hysteresis loop

The purpose of this paper is to propose an accurate model for simulation of inrush current in power transformers with taking into account the magnetic core structure and…

High-order fast integration for earth-return impedance between underground and overhead conductors in Matlab

The earth-return mutual impedances between underground and overhead conductors can be expressed by Pollaczek integrals. Many efforts have been exerted to calculating this kind of…

Application of local coordinates rectification in linearization of selected parameters of dynamic nonlinear systems

The purpose of this paper is to aim to an application of element of the theory of differential geometry for building the state space transformation, linearizing nonlinear dynamic…

A second order s-to-z transform and its implementation to IIR filter design

The purpose of this paper is to design a tool for IIR digital filters obtained from analog prototypes, which preserves simultaneously the amplitude and the group delay response…

Special issue on electric machines and systems: design, analysis, and control