COMPEL - The international journal for computation and mathematics in electrical and electronic engineering: Volume 29 Issue 5

Numerical pulse test for synchronous machines

Olli Mäkelä, Anna‐Kaisa Repo, Antero Arkkio

The purpose of this paper is to propose the numerical pulse test for the parameter estimation of the synchronous machine models.

Computer models of 3D magnetic microfibres used in textile actuators

Sławomir Wiak, Anna Firych‐Nowacka, Krzysztof Smółka

The purpose of this paper is to discuss the idea of designing and manufacturing intelligent clothes with magnetic fibres. The main goal of the research is to create the universal…

Torque measurement methods for very high‐speed motors

Pierre‐Daniel Pfister, Yves Perriard

The purpose of this paper is to develop a contactless torque measurement methods. The need for low‐weight, high‐efficiency and high‐power density motors has led to an increased…

The multi‐slice method for the design of a tubular linear motor with a skewed reaction rail

Benedikt Schmülling, Marc Leßmann, Björn Riemer, Kay Hameyer

A fundamental disadvantage of three‐dimensional finite element (FE) simulations is high computational cost when compared to two‐dimensional models. The purpose of this paper is to…

Dynamic analysis method of spherical resonant actuator using 3D finite element method

Satoshi Suzuki, Tadashi Yamaguchi, Yoshihiro Kawase, Koichi Sato, Shuhei Kakami, Katsuhiro Hirata, Tomohiro Ota, Yuya Hasegawa

The purpose of this paper is to develop a dynamic analysis method of a novel spherical resonant actuator. In this method, the magnetic field equation is coupled with the electric…

Automated sizing of permanent magnet synchronous machines with respect to electromagnetic and thermal aspects

Martin Hafner, Marc Schöning, Kay Hameyer

The purpose of this paper is to consider thermal analysis as part of an automated sizing and design process. The temperature estimation at characteristic points of the machine…

In‐plane eddy current analysis for end and interior stator core packets of turbine generators

Katsumi Yamazaki, Yuki Yamato, Hisashi Mogi, Chikara Kaido, Akihito Nakahara, Kazuhiko Takahashi, Kazumasa Ide, Ken'ichi Hattori

The purpose of this paper is to investigate the distribution of in‐plane eddy currents in stator core packets of turbine generators, and to reveal the loss reduction effect by the…

Transient thermal field modelling

Ekkehard Bolte, Burghard Kipp

The purpose of this paper is to provide a thermal model for apparatus and assemblies, especially electrical drives, capable of predicting the temperature distribution under steady…

Finite element modeling of induction motor for variable speed drives

Luigi Alberti, Nicola Bianchi, Silverio Bolognani

The purpose of this paper is to present a new finite element technique to simulate variable speed drives.

Skin effect experimental validations of induction motor squirrel cage parameters

Aldo Boglietti, Andrea Cavagnino, Luca Ferraris, Mario Lazzari

The paper deals with the experimental validations of the corrective coefficient used to take into account the skin effect in the equivalent circuit rotor resistance of induction…

Numerical modeling of the coupled electromagnetic and thermal fields in the controlled solidification process

Ştefan Nagy, Teodor Leuca, Claudiu Mich

The purpose of this paper is to present the numerical modeling of the coupled electromagnetic and thermal fields for the controlled solidification process of non‐ferrous alloys.

Thermal analysis of a high‐energy density pre‐biased choke

Rafal Wrobel, Neville McNeill, Phil H. Mellor

The main limit of an electromagnetic design lies in its thermal performance. Accurate prediction of the temperature within a new device is therefore very desirable. The purpose of…

Analysis method of negative ion by electrostatic atomization

Yu Okaue, Gaku Yoshikawa, Fumikazu Miyasaka, Katsuhiro Hirata

The purpose of this paper is to propose an analysis method of negative ion by electrostatic atomization. Because the electrostatic atomization includes large deformation of a drop…

Automatic HF model generation and impedance optimization for low voltage DC motors

Jens Benecke, André Linde, Stefan Dickmann

The purpose of this paper is to create a model to calculate the high frequency (HF) complex impedance of common low‐voltage DC motors from construction parameters to predict their…

Comparative performance analysis of aluminum‐ and copper‐rotor induction generators in standalone wind power application

Khurshid Hafiz, Gaurav Nanda, Narayan C. Kar

In order to assess the performance of an induction generator in standalone wind power application, it is imperative that mathematical models are developed that accurately…

Electric motor winding temperature prediction using a simple two‐resistance thermal circuit

Cassiano Antunes Cezario, Hilton Penha Silva

The purpose of this paper is to propose a simplified thermal circuit to estimate the temperature rise in the winding of a totally enclosed fan cooled electric motor for different…

Calculation of load‐dependent equivalent circuit parameters of squirrel cage induction motors using time‐harmonic FEM

Andrej Stermecki, Oszkár Bíró, Kurt Preis, Siegfried Rainer, Klaus Krischan, Georg Ofner

The purpose of this paper is to define a time‐efficient numerical procedure for the extraction of load‐dependent equivalent circuit (EC) parameters of induction machines. The…

Analytical thermal models for small induction motors

Dave Staton, Mircea Popescu

Thermal analysis is an important design aspect and becoming a more important component of the electric motor design process due to the push for reduced weights and costs and…

Analysis of a fault‐tolerant hybrid‐excitation DC motor

Paolo Bolognesi, Francesco Papini, Ottorino Bruno

The purpose of this paper is to investigate the use of hybrid‐excitation solutions, using contemporaneously permanent magnets and field coils, for DC machines intended to operate…

Separation of saliency information for speed sensorless detection of induction machines flux and rotor position

Thomas M. Wolbank, Mohamed K. Metwally

The purpose of this paper is to describe an effective method to eliminate or substantially reduce the modulation harmonics due to saturation and inter‐modulation for sensorless…

A coupled‐circuit model for a DFIG operating under unbalanced conditions

Sinisa Djurovic, Steve Williamson

The purpose of this paper is to describe the principles of a coupled‐circuit model for a doubly‐fed induction generator (DFIG) and to present evidence of the validity of this…

Preface

Carlos F.R. Lemos Antunes