Study of electric drive with linear engine for bag-forming machines

In this paper, theoretical computation study of linear induction motor characteristics are considered and performed, depending on the main technical and design parameters of bag-forming machines. The object of the study is a linear induction electric motor which is part of electric drive of bag-forming machine functional systems displacement modules. Induction drive on the basis of the linear motor may be an alternative type of actuator and transport systems. The advantages of this system: the missing link of transmission of the tractive force, i.e. the simplification of the kinematic scheme; no rotating parts, hence improving reliability; for a more accurate speed control and positioning; use of the normal effort to unload the supporting rollers. In case of outage work on can be easily delivered to the desired location (without the clutch). A look at a new system of frequency regulation of the asynchronous engine with use of blocks of the correction and direct torque control. The control system supports the torque of the engine at a critical level, this is when the engine as a control object, is in an unstable state, and the control system they have to maintain this unstable state. As a research method we used the sequence of calculation of characteristics of a linear induction motor. The obtained results of theoretical computation study make it possible to choose parameter values for designing of functional displacement modules with linear induction motor. The use of transport system with electric drive in bag-forming machine on the basis of linear induction motor allows to simplify its kinematic scheme and to increase reliability indicators. The data obtained as a result of the studies can also be recommended for other technological machines and lines industrial complex.