Two-way conductivity converters in the technology of tire cord rubberization

The article deals with the problems of increasing the multi-engine electric drive energy efficiency on the example of the cropped cord production line in manufacture of tires. There are requirements for line electric drives that can have an impact both each other and the overall power grid in the mode of technological braking, as well as the requirements for the availability of protection functions and mutual coordination with the mains supply. To solve this problem, options have been developed to build reversible frequency converters on fully controlled (locked) keys as part of frequency-regulated technological electric drives in the production of cord for car tires with energy recovery. The construction of the reversible frequency converter with the use of autonomous voltage inverters, as well as the results of computer simulations in the reactor and non-reactor circuits of reversible frequency converters in the composition of multi-motor electric drives with a total DC bus are shown.

Cordline multi-motor electric drive with energy recovery

The article offers a variant of developing a cordline electric drive in the production of automobile tires to increase the energy-efficient due operation of production lines based on interconnected electric drives with energy recovery. The modes of operation of the technological line of cord production with energy recovery is possible in the network are shown, requirements for the drive system are drawn up. Simulations in Matlab 10, Simulink and SimPowerSystems carried out the research. The developed version of the frequency-controlled electric drive allows increasing the energy efficiency of production lines in the production technology of automobile tires by using generator modes of asynchronous motors as a part of frequency-controlled electric drives.

30 EARS ANNIVERSARY OF BELARUSSIAN METALCORD

The article describes the history of the formation and development of metal cord production in Belarus. The main ways of the Belarusian metallurgical works had followed from the production of the first tons of steel wire cord, before reaching the production capacity, twofold of the design capacity. The authors paid a lot of attention to the structure of hardware production, which is the visiting card of the plant today, to people who directly participated and promote the process of new products manufacture. Particular attention in the article is devoted to the geography of deliveries of metal cord and the main customers – consumers who use this product in the production of tires. The changes in the properties of the steel wire cord from the moment of first manufacture to the present time is traced, based on permanent changes of the requirements of the automotive industry.