An Improved Energy Matching Method to Utilize the Potential Energy of Large-sized Hydraulic Press at Multi-system Level

Large energy loss caused by mismatching and wasted potential energy, is a prominent problem for large-sized hydraulic press. The mismatch problem can be solved at the multi-system level of hydraulic press, where a drive system consisting of several drive zones provides energy to hydraulic presses according to the load profiles. Based on the multi-drive to multi-press system, we added a peer to peer mode, where the potential energy of the slider can be utilized mutually among these presses by combining the chambers of hydraulic cylinders. In this improved multi-system method, the number of drive zones can be reduced by combining operations and the matching degree is further improved. Meanwhile, the scheduling scheme needs to be redesigned according to the enhanced constraints of duration of each operation, which shows better energy-saving effect.