CALCULATIONS OF DYNAMIC OPERATING MODES OF ELECTRIC DRIVES OF SELF-PROPELLED MINING MACHINES
- Kuzbass State Technical University named after T.F.Gorbachev
Abstract
The task of improving the calculations of the dynamic modes of electric drives of self-propelled mining machines, particulary, tunneling machines, is considered. Attention is drawn to the possibility to opearte in dynamic modes of a spatial change in the an asynchronous electric motor stator housing position, included in the electric drive, around the axis of its rotor due to the ultimate rigidity of the supports of the mining machine. In connection to this, it is possible to change the absolute angular velocity of rotation of the electromagnetic field of the stator of this electric motor. The necessity of introducing into existing mathematical models that determine the state and behavior of asynchronous electric motors, additional differential and algebraic relations for calculating the absolute speed of the electromagnetic field of the stator and the nature of the motion of the stator housing of the electric motor as part of the mining machine is noted. The results of calculations of the idle start mode of the electric motor of the executive body of the mining combine are shown, showing the difference in the nature of its electromagnetic moment variation, rotor rotation speed, as well as efforts in individual reducer elements of the driving body driving the stator body from similar calculation results without taking into account the stator body movement. The conclusion is made about the possible discrepancy between the calculated and experimental results in the study of the dynamic modes of self-propelled mining machines.
References
- Булгаков А.А. Частотное управление асинхронными двигателями. М.: Энергоиздат, 1982. 216 с.
- Горев А.А. Переходные процессы синхронной машины. М.-Л.: Госэнергоиздат, 1950. 551 с.
- Ещин Е.К. Вариант частотного управления асинхронным электроприводом горных машин // Электротехника. 1996. № 1. С. 28-30.
- Ещин Е.К. Детализация расчетов динамических режимов работы электроприводов горных машин // Горное оборудование и электромеханика. 2017. № 5. С. 35-39.
- Ключев В.И. Теория электропривода. М.: Энергоатомиздат, 2001. 704 с.
- Ковач К.П. Переходные процессы в машинах переменного тока / К.П.Ковач, И.Рац. М.-Л.: Госэнергоиздат, 1963. 744 с.
- Комбайн проходческий КСП-32. Руководство по эксплуатации / В.Т.Антипов, Н.С.Тапехин, Е.С.Серов, В.А.Гафанович; АО «Ясиноватский машиностроительный завод». 1999. Кн. 1. 119 с. // https://www.twipx.com/file/22907/
- Копылов И.П. Электромеханические преобразователи энергии. М.: Энергия, 1973. 400 с.
- Костенко М.П. Работа многофазного асинхронного двигателя при переменном числе периодов // Электричество. 1925. № 2. С. 85-95.
- Обеспечение устойчивости проходческого комбайна с двухкорончатым реверсивным рабочим органом / А.А.Хорешок, Л.Е.Маметьев, А.М.Цехин, А.Ю.Борисов // Горное оборудование и электромеханика. 2016. № 6. С. 3-7.
- Dieter Gerling. Electrical Machines. Mathematical Fundamentals of Machine Topologies. New York: Springer, 2015. P. 472.
- Jan A. Melkebeek. Electrical Machines and Drives. Fundamentals and Advanced Modelling. Cham (Switzerland): Springer International Publishing AG, 2018. P.442.
- Juha Pyrhőnen. Design of rotating electrical machines / Juha Pyrhőnen, Tapani Jokinen, Valéria Hrabovcová. Chichester (United Kingdom), John Wiley & Sons, Ltd., 2008. P.512.
- Lyshevski S.E. Electromechanical systems and devices. New York: Taylor & Francis Group, 2008. P.565.
- Park R.H. Two-Reaction Theory of Synchronous Machines. Generalized Method of Analysis – Part I // Transactions of the American Institute of Electrical Engineers. 1929. Vol. 48. Iss. 3. P. 716-727.
- Sen P.C. Principles of electric machines and power electronics. Chennai (India): John Wiley & Sons, Inc., 2014. P.618.