Gennady Kononov

Background. This study discusses the issues of controlling a linear switched reluctance electric drive combining the functions of traction and magnetic suspension. When an additional magnetic suspension control coordinate is introduced into the drive system, the task of modifying the control algorithms and studying, based on this, the traction properties of the electric drive under the restrictions imposed by the magnetic suspension system arises. Aim. This study aims to examine the control algorithms that ensure the priority of magnetic suspension in the problem of controlling a linear electric drive combining the functions of traction and suspension. Materials and Methods. The main research methods used are computer modeling, computational studies, and analysis of research results. Results. An approach to the selection of control parameters is proposed that allows minimizing the impact of the drive operating mode on the electromagnetic suspension system. Conclusion. The practical significance of the proposed approach is that it can be used in the design of a control system for a combined traction system and suspension of a cargo transport platform.

Background: The paper discusses the features of building a control system for an electro-magnetic suspension of a cargo platform. The operating conditions of cargo systems are associated with a large range of changes in the mass of the cargo and an abrupt change in the voltage of the power source. The control structure of the electromagnetic suspension system contains a non-linear unstable object (electromagnet). This greatly complicates the management process. Aim: The aim of the work is to study the properties of an unstable control object for its representation by an equivalent linear model, which makes it possible to automate the process of controller synthesis in the MATLAB software environment. Methods. The main research methods are computer modeling, computational studies, analysis of research results. Results: An approach to the construction of an adaptive control system for an electromagnetic suspension based on the synthesis of a linear controller based on an equivalent linear model of an unstable object is proposed. Conclusion: The practical significance lies in the fact that the proposed approach can be used to design a control system for the electromagnetic suspension of a cargo platform.

Background: The development of work in the field of creating cargo maglev transport systems is associated with the development and study of the electro technical complex of the rolling stock for the operating range with long stretches in poorly developed territories. Aim: The aim of the work is to substantiate the structure and parameters of the components of the electro technical complex of the rolling stock, to study the operating modes. Methods: The main research methods are functional structural analysis and synthesis, computer modeling, computational studies, analysis of research results. Results: As a result of the research, the factors that determine the appearance of the electrotechnical complex of the rolling stock have been identified. The basic requirements for the electrical complex are formulated. The structure was developed and the parameters of the components of the electrical complex for the transport platform with magnetic levitation were determined. A high-speed flat car model 13-6990 for the transportation of containers was chosen as the closest railway analogue. A computer model of a combined traction-levitation system based on a linear reluctance inductor motor has been developed. The results of computational studies, confirming the physical feasibility of the electrical complex of the rolling stock with linear reluctance inductor motors, are presented. Conclusion: The practical significance lies in the fact that the proposed concept of constructing an electro technical complex of rolling stock provides for the creation of a maglev transport system with a low-cost infrastructure.

Background: The new scope of application for vehicles equipped with magnetic suspension is the fright container transportation. In order to realize the transit potential of the country, the increase in mean speed of the container trains is required. Aim: The present work aims to explore the possibilities to develop the high-speed transport system equipped with magnetic suspension for container transportation along Euro-Asian land bridge. Methods: As the research tools used methods of situational analysis, computer modeling, transport geography, technical and economic analysis. Results: The market analysis results of the transit container transportation have shown that the major challenge for Russian transit development is the constrained traffic capacity of the existing transport corridors. The drastic solution to the problem can be the construction of a new high-speed transport system. The following factors determining the conditions for the creation of the new transport system have been identified: use of transport possibilities of the Azov-Black Sea basin; ensuring accessibility of the northern territories; development of technical solutions for the creation of a transport system with low-cost infrastructure. The combined traction levitation system has been developed based on the extremely simple design of the linear switched reluctance motor. The experimental researches of the full-functional physical model of the transport platform have been performed. The assessment of investment project efficiency has shown that despite the large start-up investment in the track infrastructure, the project has positive economic effect. Practical importance: The computer model of the combined traction levitation system based on the linear switched reluctance motor has been designed. The concept of constructing a new transport system is proposed, taking into account the characteristics of the proposed operational region in poorly developed territories. The high-speed route has been proposed connecting the Azov-Black sea basin with the Pacific coastline and completely passing through the territories of Russia including some northern regions. The transit potential assessment has shown that due to the transit time reduction it is possible to attract the container freights with traffic volume of 1,52 million in twenty-foot equivalentunit.

The given paper presents a hybrid electromagnetic suspension designed for high-speed vacuum transport, where the main levitation force is generated by permanent magnets, while the electromagnet controls the air gap. The computer model is designed by means of MATLAB/Simulink software package, which allows us to simulate the dynamic operational modes of the system. The calculated studies are carried out when the vehicle accelerating to 1000 km/h with account of track irregularities. Permanent magnets incorporated in the system of electromagnetic suspension make it possible to reduce the energy consumption needed for levitation force generation.

The new scope of application for vehicles equipped with magnetic suspension is the fright container transportation. In order to realise the transit potential of the country, the increase in mean speed of the container trains is required. Objective. The purpose of the work is to explore the possibilities to develop the highspeed transport system equipped with magnetic suspension for container transportation along Eurasian land bridge. Methods. The following methods and analysis have been used as research instruments: case study, computer modeling, transport geography and technical and economic analysis. Results. The market analysis results of the transit container transportation have shown that the major challenge for Russian transit development is the constrained traffic capacity of the existing transport corridors. The drastic solution of the problem can be the construction of a new high-speed transport system. The following factors determining the conditions for the creation of the new transport system have been identified: the use of the Azov-Black sea basin transportation facilities, provision of the accessibility of the northern areas; the development of technical solutions ensuring the design of the transport system with low cost infrastructure. The combined traction levitation system has been developed based on the extremely simple design of the linear switched reluctance motor. The experimental researches of the full-functional physical model of the transport platform have been performed. The assessment of investment project efficiency has shown that despite large start-up investment in the track infrastructure, the project has positive economic effect. Practical importance. The computer model of the combined traction levitation system based on the linear switched reluctance motor has been designed. The concept of the new transport system construction has been introduced taking into account the characteristics of the supposed operating test sites in poorly developed areas. The high-speed route has been proposed connecting the Azov-Black sea basin with the Pacific coastline and completely passing through the territories of Russia including some northern regions. The transit potential assessment has shown that due to the transit time reduction it is possible to attract the container freights with traffic volume of 1.52 million in twenty-pounds equivalent.

The article gives the experimental results of the processes occurring in the combined system of traction and magnetic suspension, which was implemented on the basis of the linear switched reluctance motor. The goal of the research is to examine the possibility to combine the levitation and traction functions within one unit. The full- function physical model of the transport system with the magnetic suspension has been produced for experimental verification of the development concept for the combined system of traction and magnetic suspension. The research tests have been performed at the track structure with the limited length in order to study the processes, occurring in the most complicated start-up mode, when the discrete behavior of current in windings has the disturbance effect on the object levitation. The oscillograms of electromechanical transition processes, showing the mutual influence of traction subsystems and a suspension, are provided. The results of researches have illustrated dramatically that the development concept of the combined system of traction and magnetic suspension, based on the linear switched reluctance motor, is absolutely real. Further researches should be aimed at improving the system characteristics by reducing the mutual influence of levitation and traction processes.

Below is given the brief analysis of development trend for vehicle traction levitation systems with magnetic suspension. It is presented the assessment of potential development of traction levitation systems in terms of their simplicity. The examples are considered of technical solutions focused on reducing the complexity of transport systems. It is proposed the forecast of their further development.