Experimental Study and Functional Regime Analysis of an Electric Pump Unit With a Three-Phase Asynchronous Motor

This article presents and analyses obtained experimental results for two basic functional regimes of an electric pump unit consisting of an external gear reversible motor/pump and a three phase asynchronous motor. The natural characteristics in the engine and generator mode of the asynchronous machine, as well as the pumping/motor regimes for the hydraulic machine have been simulated and examined at a specialized hydraulic rig. The basic quantitative ratios have been set out and important conclusions have been made in the established mode of operation of the pump unit.