The Power Recovery Hydraulic Pump Test Bench Dynamic Performance Simulation

The traditional hydraulic pump test system is based on the pattern of non-power recovery, which means using energy dissipating component to load on the pump. With all the energy transferring into heat, an additional large-scale cooling system is needed, which results in the increasing of the energy consumption and text costs. What’s more, it’s almost impossible to realize the long life tests of high-power hydraulic pump. However, the power recovery test system can recover part of the energy and the energy-saving effect is remarkable. In addition, the system has much lower installed power and can be arranged flexibly. Therefore, the power recovery test system has drawn people’s attention and been applied more and more widely.By understanding the present study situation of the power recovery hydraulic pump test system and analyzing its advantages and disadvantages, an electrical power recovery design method is proposed according to the practice. With the recovered energy stored in the storage unit, the energy can be reused instead of being wasted, namely Recovery-Storage-Feedback. Firstly, according to the operating principle of electrical power recovery system, the structure is designed. Secondly, using the AMESim software to establish the system model and setting parameters related to the actual operating conditions. Then the simulations are carried out, including its function testing, dynamic property, power recovery, energy feedback, recovery efficiency and so on.The results of simulations indicated that the electrical power recovery hydraulic pump test system has a good characteristics of load-applying, so the tests on the pump’s performance indexes can be done. In addition, the efficiency of power recovery is high, and the recovered energy can be reused by hybrid power supply system, which is beneficial to energy-saving research on test equipments.