Simulation modeling of the operation of regenerative electromagnetic shock absorbers installed in the suspension of a timber road train

This article solves the problem of increasing the energy efficiency of the process of removing timber by logging road trains. Operating experience shows that more than 10 % of the fuel energy is consumed by a timber road train on friction processes in the suspensions of its links. The relevance of the feasibility of transformation, accumulation and beneficial use of energy dissipated in the suspension of a road train is substantiated. The potential of modern developments by Russian and foreign scientists in the field of converting vibration energy into electrical energy using suspension shock absorbers of various designs is quite significant. When designing regenerative electromagnetic shock absorbers, problematic issues still arise related to their limited generated power. In order to increase the productivity of electrical energy generation, a promising design of a regenerative electromagnetic shock absorber based on permanent magnets has been proposed. The study was carried out based on mathematical and simulation modeling methods. When the height of unevenness changes from 0.1 to 0.9 m, the recovered electrical power increases from 0.34 to 10.5 kW. When a logging road train moves at a speed of 20 km/h over uneven supporting surfaces of low height – 0 ... 0.2 m, regenerative shock absorbers generate limited power not exceeding 1.35 kW. With a height of unevenness of the supporting surface of 0.4 ... 0.6 m, regenerative shock absorbers generate power in the range from 4.2 to 6.8 kW. When the speed of the road train increases from 10 to 30 km/h, the recovered electrical power increases from 1.17 to 7.94 kW. The use of the results obtained will allow designers to refine similar designs of regenerative electromagnetic shock absorbers at the design stage.