Parameter matching theory of hybrid track-type bulldozer power system

In order to improve the efficiency of hybrid power system of hybrid track-type bulldozers, The hybrid track-type bulldozer structure was established and parameter matchiing theory of hybrid power system was investigated. The parameters of the main components, such as the traction motor, engine, generator and capacitor of ultracapacitor were matched by using the method. The matching results were analyzed based on hybrid track-type bulldozer model. The results show that the efficiency of hybrid track-type bulldozer was increased by 20%.