The thermal state of the ad motor at the reduce rotor speed

Authors

  • Михайло Ігорович Коцур Zaporozhzhie National Technical University Zhukovskogo 64, Zaporozhzhye, Ukraine, 69063, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2013.12421

Keywords:

AD motor, thermal state, regulation, ampacity, slip, rotor, loss, current load, energy, transformation

Abstract

Changing in the conditions of cooling in recursive short-time modes in wide range of rotor speed occurs under the exploitation of the crane electric drive based on AD motors. The aim of this article is to estimate the thermal state of the AD motor at low rotor speed, as well as comparative analysis execution of the AD motor ampacity calculated by the average loss of heat and equivalent thermal circuit (ETC) methods. Electrothermal model to consider peculiarities of electromagnetic energy transformation in thermal energy, heat transferring and heat interchanging processes was used for calculation and analysis of the thermal state of the AD motor by ETC method. Conducting evaluation of the thermal state of the AD motor with phase rotor by regulation of additional resistance under continuous (S1) and recursive short-time (S3) modes showed an increasing temperature in the range of large slip of the AD motor at the end investigation. Hence, the limiting values of current load of the AD motor were defined by ETC and average loss of heat methods. It was proved, that the definition of the AD motor ampacity by average loss of heat method led to underutilization of AD motor power

Author Biography

Михайло Ігорович Коцур, Zaporozhzhie National Technical University Zhukovskogo 64, Zaporozhzhye, Ukraine, 69063

PhD

Department of Electric and electronic apparatus

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Published

2013-04-25

How to Cite

Коцур, М. І. (2013). The thermal state of the ad motor at the reduce rotor speed. Eastern-European Journal of Enterprise Technologies, 2(8(62), 8–10. https://doi.org/10.15587/1729-4061.2013.12421

Issue

Vol. 2 No. 8(62) (2013): Energy-saving technologies and equipment

Section

Energy saving in transport technologies

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Copyright (c) 2014 Михайло Ігорович Коцур

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