Application of Constant-Power Control Electronically Technology in Local Electrical Hydraulic Generation System

The application of constant-power control electronically technology in LEHGS (Local Electrical Hydraulic Generation System) is introduced briefly in this paper. The combination of variable speed motor and fixed displacement pump serves as the power source for the LEHGS. The shaft torque and the system output pressure are characterized by phase current load analysis method. The constant-power control electronically strategy is realized through the way that a controller controls the motor speed. The simulation analysis of the electronically controlled constant-power EMP (electric motor pump) is performed by using commercial AMESIM software, and the principle prototype was produced according to the simulation results. Results show that the application of constant-power control electronically technology in LEHGS is capable of meeting the needs of low-pressure large flow and high-pressure low-flow conditions, which ensures that the special flow needs of aircraft hydraulic users under extremely harsh conditions.