COMPEL - The international journal for computation and mathematics in electrical and electronic engineering: Volume 21 Issue 2

Simulation of submicron pseudomorphic AlGaAs/InGaAs/GaAs high electron mobility transistors

Nadia Lamari, Mohamed Mfitih, Nabil Nassif

In this paper, we present the results of submicron pseudomorphic AlGaAs/InGaAs/ GaAs HEMT simulations. Our main interest is the study of electronic temperature behavior in the…

ANN‐based automatic contingency selection for electric power system

K.L. Lo, W.P. Luan, M. Given, M. Bradley, H.B. Wan

Automatic contingency selection aims to quickly predict the impact of a set of next contingencies on an electric power system without actually performing a full ac load flow…

Improvement of power systems damping using genetic algorithms aided proportional plus derivative output feedback for TCSC

Y.J. Lin, K.L. Lo

This paper develops a proportional plus derivative (PD) control scheme for a thyristor controlled series compensator (TCSC) to reinforce power system damping performance. This PD…

Design optimization of a non‐linear magnetic media system using finite element analysis and Taguchi method

S.X. Chen, T.S. Low, P.B. Leow

This paper reports an application of the combined FEM analysis and Taguchi's DOE method to the parameter optimization of a magnetic recording media. Effects of a soft magnetic…

Time‐energy optimal control of vector controlled induction motor

Hasan Allihalli, Mehmet İlyas Bayindir

A time‐energy optimal position control algorithm based on the Pontryagin's maximum principle is developed for a vector‐controlled induction motor system. The vector‐controlled…

A new integration algorithm for flux estimation using the voltage model

Hayrettin Can, Erhan Akin, H. Bulent Ertan

Vector control has very good transient and steady‐state performance in induction motors. Furthermore, most direct stator flux orientation methods do not need speed information and…

Ferroresonance in electrical systems

A.G. MacPhee, S. McKee, R.R.S. Simpson

A series‐LCR circuit is one of the simplest circuits capable of exhibiting ferroresonance. A numerical simulation of such a circuit is constructed using the Preisach model of…

An efficient time discretization procedure for finite element ‐ electronic circuit equation coupling

Patrick Dular, Patrick Kuo‐Peng

An efficient and robust time discretization procedure of theta type is proposed in the frame of the finite element‐circuit equation coupling for electronic circuits with switches…

Reducing the complexity order of the algorithms for magnetic field nonlinear problems

Irina Munteanu, Catalin Ciobotaru, Daniel Ioan

The numerical solution of electromagnetic field nonlinear problems requires successive building and solving of linear systems of equations. This is the most time–consuming part…

Finite element simulation of a magnetic brake with a soft magnetic solid iron rotor

Herbert De Gersem, Kay Hameyer

A magnetic brake with a solid iron cylinder rotating at high speeds is considered. The rotor iron is both conductive and permeable. The magnetisation curve is non‐linear. Special…

Recent developments in sensorless and quasi‐sensorless drive

P. Vas, M. Rashed, A.K.M. Joukhadar, C.H. Ng

There are two main types of speed/position sensorless closed‐loop variable‐speed electrical drives: sensorless and quasi‐sensorless drives. In sensorless drives, the classical…

Sensorless induction motor and permanent magnet synchronous motor drives using natural field orientation

P. Vas, M. Rashed, A.K.M. Joukhadar, C.H. Ng

The present paper will discuss newly developed fully digital sensorless induction motor and permanent magnet motor synchronous motor drives, which employ natural field orientation…

Field‐weakening in high‐performance PMSM drives

M. Zordan, P. Vas, M. Rashed, C.H. Ng, S. Bolognani, M. Zigliotto

The comparative analysis of field‐weakening (FW) in vector controlled and DTC permanent magnet synchronous motor drives is performed. The results of simulations and a…