Control strategies design for the hybrid engineering vehicle drive system

The cyclic motion of engineering vehicles is of great significance for hybrid power design, which can effectively improve the fuel economy of vehicles. Based on the characteristics of the cyclic operation of the studied vehicle, the engine and generator are connected in series to drive the vehicle, and supercapacitors are used for energy storage and release to achieve the structural design of the driving system; The control strategy of the system is designed using dynamic control to achieve dynamic control of each energy unit throughout the entire cycle, achieving energy control balance of the system, and the entire vehicle operates in the optimal mode. Based on the hybrid power test bench, the system control strategy is verified, mainly through the matching control of the series drive system and supercapacitor under various working conditions, to verify the effectiveness of the control system and strategy. The results show that in three working cycles, the hybrid drive system can adjust its working mode according to the control strategy and achieve smooth switching between various working modes, with all system parameters within the normal range. The control strategy is effective and provides reference for the design of such systems.