Authors: E.K. Eshchin

Title of the article: Forming the tachogram of the winder by means of asynchronous electric drive

Year: 2021, Issue: 5, Pages: 57-62

Branch of knowledge: 09.05.03 Electrotechnical complexes and systems

Index UDK: 621.3.077.2; 622.6; 621.316.71; 004.94

DOI: 10.26730/1816-4528-2021-5-57-62

Abstract: The problem of forming a tachogram (speed diagram) of a mine winder (MW) is considered. It is noted that when controlling the movement of the mine winding plant (the movement of the lifting vehicle, the driving drum, the rotor (anchor) of one or more electric motors), the main problem is the problem of implementing a tachogram (speed diagram). Attention is drawn to the direction of improving the shape of tachograms in order to improve the dynamic state of the electromechanical MW system by eliminating the so-called jerking. It is noted that limiting (eliminating) the size of the jerk, in turn, requires smooth control and fast response time from the electric motor. This requirement means consideration of the possibility of using a MW induction motor drive as a source of power control action on the mechanical part (gearbox, drum) of the MW when forming the desired type of tachogram. It is said that it is an electric machine that in response to undesirable oscillatory movements of a lifting vehicle can potentially form the necessary value of its electromagnetic moment for “calming” the oscillatory movements. The need for research is confirmed in terms of determining the possibilities of using an asynchronous electric motor in the formation of a given form of a MW tachogram and, in particular, a «gearless» speed diagram (S - type). It is noted that it is necessary to assess the possibility of an asynchronous phase-rotor electric motor as an electromechanical energy converter of a MW electric drive to become a fully controlled source of power control actions on a MW electromechanical system. The solution of the problem is considered on a concrete example. It is noted that the task of forming a given type of tachogram is transformed into the task of controlling the electromagnetic moment of induction motor. A variant of the analytical design of the formation of the control action of the motor drive (rotor supply voltage) in the calculation model of a generalized electric machine in a fixed coordinate system is proposed. Design options for the implementation of linear and S - forms of tachograms are presented. The fundamental possibility of controlling the electromagnetic moment of wound-rotor induction motor when controlling along the rotor chain is established in such a way that it provides a solution to the technological problem of realizing the necessary tachogram (velocity diagram) for any type of change in the moment of resistance on the wound-rotor induction motor shaft.

Key words: mine winding plant dynamic loading electric drive asynchronous electric motor state control

Receiving date: 01.06.2021

Approval date: 26.10.2021

Publication date: 19.11.2021

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