Reflections on the optimization of energy consumption of underground mine cars based on brake energy recovery

Abstract

Aiming at the problem that underground mine cars need to brake frequently in the mine and cause a large amount of energy waste, we analyzed the working characteristics of underground mine cars and put forward the idea of energy consumption optimization based on braking energy recovery; we designed a braking energy recovery device suitable for underground mine cars; we calculated the comparison of energy consumption before and after installing the energy recovery system in mine car locomotives through mathematical modeling, and estimated the energy recovery benefit in the operating conditions of the underground mines. The results show that in the operation process, the energy recovery system can be used to recover energy from the brakes. The results show that the braking energy recovery system can successfully recover more than 50% of the braking energy during operation, increase the range of the mine car motorcar by about 20%, significantly improve the energy utilization efficiency of the coal mine tram, and reduce the system energy consumption and CO2 emissions.