Overflow Energy Loss Recovery System Based on Hydraulic Motor-Electric Generator

Overflow loss is one of the main reasons for inefficiency hydraulic system. Aiming at overflow in system, an energy recovery system based on a motor and generator proposed. Further, pressure monitoring control strategy variable speed electric adopted, which can differential between inlet outlet proportional relief valve as small value, achieve purpose by reducing valve. Through establishing simulation model test platform, stability, step response characteristics saving are studied. The results show that unit does not affect normal operation valve, but also greatly reduces regulation deviation. Besides, efficiency about 67%.