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| 1 | Harmonics in the Squirrel Cage Induction Motor Analytic Calculation Part III: Influence on the Torque-speed Characteristic显示文摘The harmonics that appear in the squirrel cage asynchronous machine have been discussed in great detail in the literature for a long time. However, the systematization of the phenomenon is still pending, so we made an attempt to fill this gap in the previous parts of our study by elaborating formulas for calculation of parasitic torques. It was a general demand among those who work in this field towards the author to verify his formulas with measurements. In the literature, it seems,only one detailed, purposeful series of measurements has been published so far, the purpose of which was to investigate the effect of the number of rotor slots on the torque-speed characteristic curve of the machine. The main goal of this study is to verify the correctness of the formulas by comparing them with the referred series of measurements. Relying on this, the expected synchronous parasitic torques were developed for the frequently used rotor slot numbers-as a design guide for the engineer.Thus, together with our complete table for radial magnetic pull published in our previous work, the designer has all the principles, data and formulas available for the right number of rotor slots for his given machine and for the drive system. This brings this series of papers to an end. | G.Kovács | 2024 | CES Transactions on Electrical Machines and Systems2024，8，1： | 0 |
| 2 | Harmonics in the Squirrel Cage Induction Motor Analytic Calculation-Part Ⅰ: Differential Leakage, Attenuation, Asynchronous Parasitic Torques显示文摘The magnetic field generated in the air gap of the cage asynchronous machine and the harmonics of the magnetomotive forces creating that magnetic field, as well as the related differential leakage, attenuation, asynchronous parasitic torques have been discussed in great detail in the literature, but always separately, for a long time. However, systematization of the phenomenon still awaits. Therefore, it is worth summarizing the completeness of the phenomena in a single study – with a new approach at the same time-in order to reveal the relationships between them. The role of rotor slot number is emphasized much more than before. An existing, commonly used, but still impractical basic figure has been modified to more clearly demonstrate the response of the rotor for the harmonics of the stator. The need to treat differential leakage, asynchronous parasitic torques and attenuation together will be demonstrated: new formula for asynchronous parasitic torque is derived;the long-used characteristic curves for differential leakage and attenuation used separately so far was merged into one, correct curve in order to provide a correct design guide for the engineers. | G.Kovács | 2023 | CES Transactions on Electrical Machines and Systems2023，7，3： | 0 |
| 3 | Harmonics in the Squirrel Cage Induction Motor,Analytic Calculation Part Ⅱ:Synchronous Parasitic Torques,Radial Magnetic Forces显示文摘The magnetic field generated in the air gap of the cage asynchronous machine and the harmonics of the magnetomotive forces creating that magnetic field,as well as the synchronous parasitic torques,radial magnetic forces have been discussed in great detail in the literature,but always separately,for a long time.However,systematization of the phenomenon still awaits.Therefore,it is worth summarizing the completeness of the phenomena in a single study–with a new approach at the same time-in order to reveal the relationships between them.The role of rotor slot number is emphasized much more than before.New formulas derived for both synchronous torques and radial magnetic forces are used for further investigation.It will be shown that both phenomena in subject must be treated together.Formulas will be provided to take into account attenuation.Design guide will be provided to avoid dangerous rotor slot numbers.It will be shown that the generation of synchronous torques and radial magnetic forces do not depend–in this new approach-on the slot combination,but on the rotor slot number itself. | G.Kovács | 2023 | CES Transactions on Electrical Machines and Systems2023，7，4： | 0 |
| 4 | Diastolic function in heart failure显示文摘 | Kovács SJ | 2015 | Clin Med Insights Cardiol2015，9，1： | 1 |
| 5 | A city at the crossroads:social and economic transformation in Budapest显示文摘 | Z | 1994 | Urban Studies1994，31，7： | 1 |
| 6 | On limiting distributions concerning a sojourn time problem显示文摘 | L. Takács | 1957 | Acta Mathematica Academiae Scientiarum Hungaricae (-)1957，，3： | 1 |
| 7 | Problems in the Relationship between CO2 Emissions and Global Warming显示文摘 | FERENC KOVáCS | 2005 | Acta Montanistica Slovaca2005，10，1： | 1 |
| 8 | fiber die Bestimmung des Spyunges einer function ans iher Fourierreihe显示文摘 | | 1920 | Reine Anggew Math1920，150，： | 1 |
| 9 | Electrophysiological signs of changes in motorunits after ischaemic stroke显示文摘 | Lukács M | 2005 | Clin Neurophysiol2005，116，7： | 1 |
| 10 | F wave measurements detecting changes in motor neuron excitability after ischaemic stroke显示文摘 | Lukács M | 2007 | Electromyogr Clin Neurophysiol2007，47，： | 1 |
| 11 | c-Fos as a transcription factor:a stressful (re) view from a functional map显示文摘 | Kovács KJ | 1998 | Neurochem Int1998，33，4： | 1 |
| 12 | Head and neck squamous cell carcinoma:sentinel node or selective neck dissection显示文摘 | Kovács AF | | 0，，： | 1 |
| 13 | Generalized open sets显示文摘 | Császár á | 1997 | Acta Math Hungar1997，75，12： | 1 |
| 14 | Generalized topology, generalized continuity显示文摘 | Császár á | 2002 | Acta Math Hungar2002，96，4： | 1 |
| 15 | Generalized open sets in generalized topologies显示文摘 | Császár á | 2005 | Acta Math Hungar2005，106，12： | 1 |
| 16 | On certain sojourn time problems in the theory of stochastic processes显示文摘 | L. Takács | 1957 | Acta Mathematica Academiae Scientiarum Hungaricae (-)1957，，1： | 1 |
| 17 | on the problème des ménages 显示文摘 | Takács L | 1981 | Discrete Math1981，36，： | 1 |
| 18 | Redefining active volcanoes: a discussion显示文摘 | Alexandru Szakács | 1994 | Bulletin of Volcanology1994，，5： | 1 |
| 19 | Electrophysiological signs of changes in motor units after ischaemic stroke显示文摘 | Lukács M | 2005 | Clinical Neurophysiology2005，116，7： | 1 |
| 20 | Influence of the prosthetic restoration modality on bone loss around dental implants placed in vascularized iliac bone grafts for mandibular reconstruction显示文摘 | Kovács AF | | 0，，05： | 1 |
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