Hydraulic pump motor test bench with energy recovery and method of use

Abstract

The invention discloses a hydraulic pump motor test bed with an energy recovery device. The test bed comprises a power system, a hydraulic pump motor testing device and the energy recovery device. The power system comprises a first frequency converter (2) and an asynchronous motor (3). The hydraulic testing device comprises a hydraulic pump (6) and a hydraulic motor (8). The energy recovery device comprises an asynchronous generator (11) and a second frequency converter (12). The first frequency converter (2) is electrically connected with the asynchronous motor (3). The asynchronous motor (3) is connected with the hydraulic pump (6), and the hydraulic pump (6) is connected with the hydraulic motor (8) through a hydraulic oil pipeline. The hydraulic motor (8) is connected with the asynchronous generator (11). The asynchronous generator (11) is electrically connected with the second frequency converter (12), and the second frequency converter (12) is electrically connected with the first frequency converter (2).

Description

technical field [0001] The invention relates to a hydraulic pump motor test stand, in particular to a hydraulic pump motor test stand with energy recovery and a use method thereof. Background technique [0002] In recent years, due to the continuous progress of computer technology, testing technology and hydraulic technology, the technology of hydraulic pump and motor performance test bench has achieved rapid development. However, at present, the main loading methods used in the hydraulic pump motor test bench are direct loading and power recovery loading. The commonality is that the loading part of the tested motor is the loading motor, and the loading motor needs a compensation pump to provide pressure and flow for it. In this loading method, the mechanical energy of the hydraulic motor is converted into the heat energy of the hydraulic system, the energy utilization rate is low, the energy consumption is large, and the heating power of the hydraulic system is increased. ...

AI Technical Summary

Problems solved by technology

However, at present, the main loading methods used in the hydraulic pump motor test bench are direct loading and power recovery loading. The commonality is that the loading part of the tested motor is the loading motor, and the loading motor needs a compensation pump to provide pressure and flow for it.

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