Assessment of torque components in brushless permanent-magnet machines through numerical analysis of the electromagnetic field [PDF]
, 2005 For the calculation of torque in brushless (BL) alternating current motors a local method is proposed, based on the Maxwell stress theory and the filtered contributions due to the harmonics of the magnetic vector potential in the motor air gap.
Dellinger, S.J. +4 more
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Multiphase induction motor drives - a technology status review [PDF]
, 2007 The area of multiphase variable-speed motor drives in general and multiphase induction motor drives in particular has experienced a substantial growth since the beginning of this century.
Abbas +121 more
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Evolution and Modern Approaches for Thermal Analysis of Electrical Machines [PDF]
, 2009 In this paper, the authors present an extended survey on the evolution and the modern approaches in the thermal analysis of electrical machines. The improvements and the new techniques proposed in the last decade are analyzed in depth and compared in ...
Boglietti, Aldo +5 more
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Multiband monopole antenna for mobile applications [PDF]
, 2019 — In this paper, a multiband monopole antenna has been proposed for mobile applications. The monopole antenna has simple structure with a physical size of 15 cm × 7 cm.
Abidin, Z.Z. +6 more
core +1 more source
Flux observer algorithms for direct torque control of brushless doubly-fed reluctance machines [PDF]
, 2009 Direct Torque Control (DTC) has been extensively researched and applied to most AC machines during the last two decades. Its first application to the Brushless Doubly-Fed Reluctance Machine (BDFRM), a promising cost-effective candidate for drive and ...
Chaal, Hamza, Jovanovic, Milutin
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Constant Starting Torque Control of Wound Rotor Induction Motors [PDF]
IEEE Transactions on Power Apparatus and Systems, 1970 Constant starting torque of a wound rotor motor can be achieved by inserting a fixed external element consisting of resistances and reactances combination in the rotor circuit instead of using a saturable reactor or other feedback devices. This approach provides the desired starting characteristic at a low cost of starting equipment.
openaire +1 more source
A New Soft Starting Method for Wound-Rotor Induction Motor [PDF]
Journal of Electrical Engineering, 2011 A New Soft Starting Method for Wound-Rotor Induction Motor Starting of a three-phase Induction motor using a starter rheostat in rotor circuit has some disadvantages. A new method for starting of a three-phase motor by using a parallel combination of resistors, self-inductors and capacitors in rotor circuit is proposed in this paper.
Mohammad Sharifian +3 more
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Quality Assurance Testing for Screening Defective Aluminum Die-cast Rotors of Squirrel Cage Induction Machines [PDF]
, 2018 The recent trend in squirrel cage induction motor manufacturing is to replace fabricated copper rotors with aluminum die-cast rotors to reduce manufacturing cost to stay competitive in the global market. Porosity in aluminum die-cast squirrel cage rotors
Gyftakis, Konstantinos N. +4 more
core +1 more source
Noncontact electrical resistivity measurement technique for molten metals [PDF]
, 1998 A noncontact technique of measuring the changes in electrical conductivity (or resistivity) of conducting liquids is reported. The technique is based on a conducting drop that is levitated by the high-temperature electrostatic levitator in a high vacuum.
Ishikawa, Takehiko, Rhim, Won-Kyu
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An Improved Magnetic Equivalent Circuit Model for Electromagnetic Modeling of Electric Machines
Iranian Journal of Electrical and Electronic Engineering, 2021 Poor modeling of air-gap is the main defect of conventional magnetic equivalent circuit (CMEC) model for performance analysis of electric machines. This paper presents an improved magnetic equivalent circuit (IMEC) which considers all components of air ...
F. Rezaee-Alam +2 more
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