Study of the induction motor electric drive efficiency in transients during their acceleration
Journal Title: Технологический аудит и резервы производства - Year 2018, Vol 5, Issue 1
Abstract
<p><em>The electric drive with a squirrel-caged induction motor working in frequent start-stop modes is the object of this study. These drives have wide applications nowadays, such as in electric vehicles and hybrid electric vehicles, so improvement of their efficiency during the transients is an important task</em><em> </em><em>today.</em></p><p><em>The one of the problems of such drives lays in the high energy consumption during the transients, especially if we talk about the acceleration of the motor. Due to the high starting currents large amount of consumed energy is dispersed as heat on the motor windings. The experimental studies carried out in this work have proved the necessity of limitations of these currents. However, such a decision will lead to the increase of the motor acceleration period which means that the starting currents, even having lesser magnitude, will last longer. This consequence will, therefore, also cause higher energy losses. So, there should be a point of the optimum – the acceleration period, during which the electric drive consumes the least possible energy.</em></p><p><em>In order to determine the optimal acceleration period, the computer model of the electric drive with a squirrel-caged induction motor, controlled by a smooth start device, was developed in this paper. The smooth start device provides the possibility of evenly increasing of the voltage from zero to the rated value. The research has proven the existence of the optimal voltage increasing period, during which the motor acceleration heat losses are minimal. This optimal point depends only on the motor-drive system parameters and remains consistent for any applied load. The research results provide the possibility of improving the efficiency of the electric drives working in frequent start-stop modes due to a slight increasing of the motor acceleration period that leads to the reduction of the starting currents.</em></p>
Authors and Affiliations
Mykola Ostroverkhov, Danylo Trinchuk
Keywords
Related Articles
- EP ID EP527499
- DOI 10.15587/2312-8372.2018.144612
- Views 117
- Downloads 0
Development of methodical approach to the analysis of integration risks in the project of creation of the logistics center
<p><em>The object of the research is the project of a logistics center, which is considered as an organizational and production integrated complex system, the main task of which is provision of the conditions for the int...
Development of technology of ayurvedic culinary products with natural plant components
<p><em>Among the main factors preventing the growing number of non-communicable diseases is ensuring a healthy diet, increases the body's resistance to adverse exogenous and endogenous factors, helps to maintain proper h...
Increasing the technical level of a torque flow pump by changing the geometry of a flowing part
<p><em>The object of research is a pump of dynamic principle of action, namely a TFP «TURO» type (Switzerland).</em></p><p><em>The main TFP disadvantage is a lower value of the efficiency compared with centrifugal pumps....
Development of an approach to automation of gas transmission system management
<p><em>The object of research is the management system of the gas transmission system (GTS) of Ukraine. The analysis shows that the GTS effectiveness is hampered by the information heterogeneity of the available automati...
Development of the design method of the enterprise for the release of new products
<p><em>The object of research is the method of designing an enterprise for the release of new products, the basis of which is played with nature and the method of analyzing hierarchies. The sustainability of the project...