Design and AMESim-Simulink Simulation Analysis of Potential Energy and Braking Energy Combined Recovery System for Hybrid Forklift
Aimed at the serious energy losses caused by frequent lifting and start-stop braking of hybrid forklift,a combined recovery system of hybrid forklift potential energy and braking energy was designed,focusing on the key technologies of potential energy recovery of hybrid forklift and energy efficiency improvement of dual-power energy distribution control strategy.On the basis of improving and optimizing the original parallel hybrid system of traditional hybrid forklift,the simulation model is built by using forward modeling idea.In order to control the displacement of hydraulic cylinder accurately,a fuzzy PID adaptive control system is proposed.In order to optimize the working efficiency of engine and drive motor of hybrid forklift during driving and to recover braking energy,a control strategy of braking energy recovery based on the optimal working curve of engine is proposed.Finally,based on the JB/T 11988-2014,a variety of working conditions are formulated,and AMESim and Simulink are used to carry out simulation and comparative tests under various working conditions,which verifies the effectiveness of the proposed method and improves the energy recovery efficiency,and the combined recovery efficiency of potential energy and braking energy can reach up to 56.86%.
hybrid forkliftpotential energy recoverybraking energy recoveryfuzzy controlPIDAMESim-Simulink simulation