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This paper brings into attention two types of rare earth-less electrical machines designed to be used for an automotive cooling fan (CF) application. A low-power induction machine and a variable reluctance synchronous machine will be analyzed based on the requirements of a 48V/850W CF. Specific design issues requiring attention when designing these two motors for such an applications will be pointed...
This paper presents a comprehensive survey of the energy harvesting concept in the current social and technological context, with the intent to draw attention to linear generators, in different topologies, as competitive candidates in green energy conversion microsystems. The emerging technologies of energy scavenging are discussed, examining both the environmental sources and a selection of applications...
Different variants of electrical machines can be used for the construction of the air conditioning compressor of a car. Two possible solutions are analyzed in this paper: an induction machine and a permanent magnet synchronous one. A short presentation of the application requirements is made and few considerations about the design of the two machines for this purpose are given. The numerical analysis...
This paper presents a perspective regarding the design concepts of a small induction machine used for electrical steering systems. The particularity of this view is given by the fact that besides the output imposed parameters the geometrical dimensions are subject to major constraints. In these conditions there are some theoretical aspects that limit from the start the design choices that can be made...
The paper deals with the study of a high speed induction motor to be used for the propulsion of an electric vehicle. A 40 kW machine, operating at a rated speed of 40500 r/min is designed and analyzed in the paper. After exposing the reasons which determined the choice of the induction motor for such an application, a particular topology is analyzed here. The aspects that arise during the design procedure...
This paper presents a new type of tubular electrical machine with a modular construction. The structure of the machine, concerning its construction, is discussed in the first part of the paper. A semi-analytical method based on the magnetic equivalent circuit calculation is used in order to obtain the flux densities in different parts of the iron core of the machine. A Gauss elimination procedure...
A new topology of modular tubular motor is presented. It is a variable reluctance transverse flux machine with no permanent magnets. Firstly its construction is detailed. Some elements of the developed design algorithm are given, too. A sample machine was sized. It was analyzed by means of numeric field computations. The paper also contains a study concerning the influence of several parameters on...
In advanced manufacturing systems complex movements are frequently needed. These can be performed by motion systems able to execute motion of several degrees of freedom. Usually each type of movement is performed by one independent electrical machine. In a more developed approach electrical machines able to perform more degrees of freedom motion are widely required. In the paper some contributions...
Linear drive technologies are steadily expanded in various applications, especially in industry, where high precision electrical direct drive systems are required. In this paper a double-sided variant of a novel direct driven modular permanent magnet linear motor is presented. Its characteristics are computed by means of 3D FEM magnetic field analysis. An interesting industrial application in which...
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