Experimental Investigation of a Double-Acting Vane Pump with Integrated Electric Drive

Marek Pawel Ciurys,Wieslaw Fiebig

doi:10.3390/en14185949

Marek Pawel Ciurys, Wieslaw Fiebig

Open Access

https://doi.org/10.3390/en14185949

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Abstract

The article presents an innovative design solution of a balanced vane pump integrated with an electric motor that has been developed by the authors. The designed and constructed bench, which enables testing of the system: power supply, converter, ntegrated motor—pump assembly and hydraulic load at different motor speeds and different pressures in the hydraulic system, is described. The electromagnetic and hydraulic processes in the motor-pump unit are investigated, and new, previously unpublished, results of experimental studies at steady and dynamic states are presented. The results of the study showed good dynamics of the integrated motor-pump assembly and proved its suitability to control the pump flow rate, and thus, the speed of the hydraulic cylinder or the speed of the hydraulic motor.

Highlights

Double-Acting Vane Pump withHydraulic drives are used wherever it is necessary to obtain high force values with a relatively low weight of the device
It is possible to adjust the power of the electric motor to the power of hydraulic actuators, which leads to increased energy efficiency
The authors are convinced that the advantages of this solution will include, above all, a higher power density in a volume unit compared to conventional solutions, the ability to control the pump flow rate by changing the rotational speed of the electric motor, greater energy efficiency, better dynamics, and lower noise emissions due to the installation of positive displacement pump inside the electric motor, which is a kind of soundproofing housing

Summary

Introduction

Hydraulic drives are used wherever it is necessary to obtain high force values with a relatively low weight of the device. The authors are convinced that the advantages of this solution will include, above all, a higher power density in a volume unit compared to conventional solutions, the ability to control the pump flow rate by changing the rotational speed of the electric motor ( better controllability), greater energy efficiency, better dynamics, and lower noise emissions due to the installation of positive displacement pump inside the electric motor, which is a kind of soundproofing housing Such systems are more efficient due to the possibility of direct adjustment of the motor power consumption to the load of the actuators (actuator, hydraulic motor). In the further part of the article, the novel integrated motor-pump assembly is presented, as well as its experimental investigation on the designed and built test stand in the steady and dynamic states

Design of the Novel Pump-Motor Assembly

Description of the Research Test Bench

Steady-State Tests of the Motor-Pump Assembly

Conclusions

Findings

Patents