Conversion and Utilization of Gravitational Potential Energy for Hydraulic Excavator

摘要

Considering the loss of high throttling loss for open-circuit hydrostatic transmission at present, hydraulic excavation energy saving is important for removing the source of deficiency and protecting the environment. This paper deals with closed circuit gravitational potential energy recovery system (GPERS) based on energy storage element such as an accumulator, along with the generator. An estimated 16% total energy consumption is reduced when a system using accumulator-motor-generator system is used as compared to the simple motor system. The simulation result is carried out with Automation Studio and MATLAB/Simulink. At last, the paper put forward the future development of GPERS.