The Energy Saving Method Based On Conversion Efficiency Promoting Of Hydraulic Pump And Motor

As energy crisis is increasingly intensified over the world, energy-saving is becoming a commonly-concerned focus. In our country, the industry account for a large proportion, and the energy consumption with high-carbon energy mainly occupied about seventy percent of the whole social energy consumption, resulting in high energy consumption and carbon emission, which had a serious impact on energy saving and environmental protection. With the enhancement awareness of energy saving consciousness, the manufacturing industry characterized by high-carbon energy consumption is facing the challenge of energy saving. In this paper, the energy consumption of hydraulic forming equipment was studied and optimized.Firstly, the energy consumption characteristics in the hydraulic system were analyzed from the perspective of energy saving. The results showed that the energy loss of conversion as well as power matching that account for the largest proportion of the hydraulic pumps and motors. The energy consumption of variable frequency motor and variable pump driving mode was optimized based on the variable frequency theory of energy saving. The Simulink and AMESim co-simulation model of the variable frequency motor and variable pump, variable frequency motor and constant displacement pump, power frequency motor and variable pump driving mode were set up,and the energy consumption of three different driving mode were compared.The results showes:these three different driving mode can achieve the purpose of power matching, but the energy conversion efficiency were different under different driving mode, and the driving mode of variable frequency motor and variable pump optimized not only meets the requirements of power matching, but also enhances the energy conversion efficiency of hydraulic pumps and motors.