This paper deals with linear generator design. Different topologies of linear generators are presented. Numerical methods are used in the design of electric machines. A 3D model of a flat one-sided synchronous linear electric generator was made and analysed with Ansys Workbench software. Within the numerical analysis, calculation of magnetic flux density was made
Słowa kluczowe: numerical modelling, linear generator, linear motor topologies
W artykule przedstawiono projekt generatora liniowego. Przedstawione zostały różne topologie generatorów liniowych. Wykorzystano metody numeryczne w projektowaniu maszyn elektrycznych. Zbudowany został model 3D synchronicznego generatora liniowego i medel ten poddano realizacji numerycznej oprogramowaniem ANSYS. W realizacji numerycznej obliczono indukcję magnetyczną.
Keywords: modelowanie numeryczne, generator liniowy
Linear electric machines are devices that directly produce or exploit linear movement. They have become commercially better known between years 1970 and 1980, when there were huge efforts to build a MAGLEV train for carrying passengers, which would be driven by linear synchronous motors. Linear machines are used in many other applications, as they have many good properties, such as high accelerations and decelerations, high thrust forces, high precision and reproducibility of the position . Eric R. Laithwaite wrote that a linear electric machine is easiest to imagine as a rotary machine, of which stator and rotor are cut and unrolled in the plane . Stator and rotor in a rotary electric machine become primary and secondary in a linear machine. Primary is the part of the machine which is supplied with electric current. Secondary is the part of the machine, with permanent magnet excitation system, a squirrel cage or magnetic saliency. All types of linear machines can have different topologies. In general there are two different geometry types; tubular and flat geometry type. Both geometries may have a long or short secondary or primary. Flat linear motors can be one-sided or double-sided . Some most common applications where linear motors are used are sliding doors, swing doors, elevators, pneumatic hammers, electromagnetic pumps, electromagnetic flow meters, automation and robotics . Lineat motor topologies The linear electric machine is represented as a rotary machine, which has been cut and unrolled in a plane. The rotor becomes the secondary; above it the unrolled stator represents the primary. Such a structur [...]
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