An integrated electromechanical actuator for high dynamic pump application

This paper presents the design concepts and the test results of an electro-mechanical actuator for high-performance pump application. The rotating permanent magnet synchronous motor is integrated with the mechanical component in a rotating-screw architecture in order to minimize the total inertia. The motion trajectory fits the classical profile with high-torque at low-speed and low-torque at high speed, which involves flux-weakening operation and optimization of the torque-to-speed characteristics both at base and maximum speed. A prototype has been manufactured using the design data of the optimization procedure. Test results confirm the performance of the system.