Long-term work of a number of geological and exploration industry teams on improvement of exploration drilling machines showed the necessity of systematization of accumulated experience in the field of electrical equipment development, combining such components as electric drive, remote control system and system of acquisition and analysis of technological drilling parameters. Until now each of these components was considered as a separate element, solving separate tasks. Complex approach in creation of unified structure allowed to develop a model of control system considering a number of technological process parameters and a technique of forming control action of complete electric drive.
The development of theory and practice of adjustable AC electric drives on the basis of valve frequency converters contributes in recent years to the wide implementation of such drives in various industries.
Sustainable and highly productive operation of mining machines is largely determined by the quality of electrical energy in the underground distribution network. The main means of improving the quality of voltage at the terminals of electrical receptors are compensating devices that change the mode of operation of the distribution network, which directly affects the operation of the electric drive of combines ...
Keeping in mind the feasibility of longitudinal and transverse compensation in underground networks of potash mines, we will analyze the modes of operation of the mine distribution network, typical for the production association "Beloruskali" ...
It is possible to reduce voltage and active power losses in the mine distribution network by simultaneous inclusion of longitudinal capacitive compensation units for voltage losses and unregulated reactive power sources ...
Currently existing thyristor circuits having galvanic connection with the power part have a number of disadvantages: possibility of undesirable unlocking of thyristors, appearance of feedback, connection of low-voltage and high-voltage circuits ...
