... components. The numerical models are validated with measurement data for a range of different mass flow rates. Design/methodology/approach – The work presented is based on the combination of two complementary approaches, namely numerical simulation and measurements. The measured data for the air mass...

... specimen, and the locus of the magnetic flux density vector has been controlled by a digital measurement system. An inverse vector Preisach hysteresis model has been developed and identified by using the measured data. Findings Finally, the inverse model has been inserted into a finite element...

...Carlos F.R. Lemos Antunes; Carlos P. Cabrita; Pierre‐Daniel Pfister; Yves Perriard Purpose 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 research and development...

...Sławomir Wiak; Andrzej Krawczyk; Ivo Doležel; D. Thailly; R. Romary; D. Roger; J‐F. Brudny Purpose Non‐intrusive magnetic measurements in AC machines are possible with small flat coils stuck on the external surface of the housing of a running motor. The aim of the paper consists in determining...

...Segio Lupi; Fabrizio Dughiero; Egbert Baake; P. Schetelat; J. Etay Purpose To evaluate assumptions relevance of an analytical heat flow model used in indirect measurement of heat capacity and thermal conductivity by the modulated calorimetry technique. Design/methodology/approach Assumptions...

... The rule is valid in spite of the considerable modification of the electric field that branching a voltmeter entails. Originality/value “Voltage drop”, between A and B simply does not make sense. The threads of a voltmeter should carefully be placed in order to measure exactly what...

... technique is used, considering a small displacement of the rotor, which is necessary for dynamic cases or coupling with circuit. Torque Measurement Although many works in the literature deals with torque calculation when considering the movement, the majority of them consider the rotor...

...Patrick Dular; Gerard Meunier; Francis Piriou; G. Cauffet; J.L. Coulomb; S. Guerin; O. Chadebec; Y. Vuillermet Purpose This paper aims to present the use of magnetic gradient, and magnetic potential measurements in the specific case of magnetization identification for a thin sheet. Usually...

... 2008 Electric machines Finite element analysis Electrical faults Magnetic fields Measurement The analysis of stray magnetic field created by electrical machines is known as a method for fault monitoring (Selvaggi et al., 2004 ; Henao et al., 2003). However...

...B. Tellini; R. Giannetti; S. Lizón Martínez Purpose This paper aims to show a low‐cost and easy to use measurement method for characterizing magnetic material B(H) relation up to medium frequencies providing an acceptable overall accuracy of the acquired data. Design/methodology/approach...

... of quantities and indices whose measurement is not straightforward and is generally attained by means of digital signal processing techniques based on complex algorithms. The assessment of the uncertainty of the results of such measurements is a critical, open problem. This paper proposes a general purpose...

...Emilio Ghiani; Nicola Locci; Carlo Muscas; Sara Sulis This paper deals with the uncertainty in digital measurement systems designed for power quality applications. The main goal of this work is to evaluate such uncertainty by means of a Monte Carlo method recently proposed in the literature...

...T.I. Haweel Many power system protection problems necessitate the measurement and track of the underlying current/voltage phasors. Adaptive LMS spectrum analyzers provide an ideal solution to such problems. This paper introduces a class of adaptive trigonometric spectrum analyzers. The underlying...

...Ozge Sahin Induction coil and the extension cable of an induction heating power supply radiate electromagnetic noise and often give disturbance to other equipment and systems closely located. In this paper a method for measuring near‐fields radiated by this system is proposed. Related data measured...