On improving the energy efficiency of electric mining excavators

The main directions of increasing the efficiency of using energy resources in mechatronic systems of mining excavators are considered. The main factors affecting the energy efficiency of excavators in quarries are the characteristics of the rock, the quality of the explosive preparation, the organization of the mining and transport complex, the characteristics and condition of the equipment, the geological conditions, the qualifications of the driver, etc. Improving circuit solutions and components allows to change ideological principles of the construction of mechatronic systems and provides the possibility of a significant increase in energy characteristics. The highest energy efficiency is achieved when using AC drives with asynchronous motors for excavators. The current issues of improving the power supply system and reducing the loss of electrical energy in the supply networks are considered. (paper)