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Efficiency Improvement of Three Phase Induction Motor
Žák, Ondřej ; Mach, Martin (referee) ; Vítek, Ondřej (advisor)
This bacelor thesis looks into problematics of efficiency of induction elektromotors. Due to present tendence of permanently encreasing efficiency, this topic is very actual. How to encrease efficiency but not to encrease material and production cost too much? This is the daily question of every producer of induction elektromotors. This thesis has a target to bring closer understanding of this problematics and describe alternatives, which is possible to follow. On choosen elektromotor produced by ATAS elektromotory Náchod a.s. is made an comparison of analytic calculate, calculate of software RMxprt and Maxwell 2D and real measuring, which refes about limits of individual calculatin methods. Then the design of changes with new calculate is provided and comparison of all results.
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The improvement of efficiency of three-phase induction motors
Vinkler, Stanislav ; Ondrůšek, Čestmír (referee) ; Vítek, Ondřej (advisor)
This work is dedicated to increasing the effectiveness of a particular draft induction motor, which was before the change and subjected to laboratory measurements according to EN60034 - 2-1, an analytical calculation of the losses and the overall efficiency and analysis program RMxprt. The first part focuses on the analysis of measurement data, measurement of partial loss in the machine and overall efficiency. In the second chapter, losses and efficiency calculated analytically, in the first case using the links in the professional literature dealing with the design of electric motors and in the second case by a program for the rapid design of rotating electrical machines, RMxprt program. At the end of this chapter all parameters are obtained measurements and calculations are compared. The third chapter is devoted to the calculation of losses and the resulting efficiency machines in a computer program, in which I gradually adopted changes to increase the efficiency of electrical machines. It also shows the calculation of the new dimensions of the stator and rotor slots. In the fourth chapter, the preparation of documentation for the production of a new two-layer winding for the current machine, while preserving the original dimensions of stator slots. The last part is devoted to the analysis of measurement data on the supplied asynchronous motor with a newly designed stator winding. In conclusion then discussed the results of work.
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