Abstract
The article presents the numerical investigation of the overhead crane’s energy consumption. The analysis is based on the hybrid model of the crane consisting of numerical model of drive mechanisms as bridge, trolley, hoist and also experimentally measured power consumption of each control unit. The numerical model was verified experimentally on the real crane. The investigation focuses on analyzing the energy consumption of the overhead crane in relation both to the travelled distance and also for the lifting and lowering heights of a suspended payload. Particular attention was paid on the cases straightly related to the hoist, as a main factor of improvements in the energetic efficiency of the overhead crane. Energy consumption was investigated for a variety of magnitudes of transported mass
Highlights
Overhead cranes are dominant pieces of handling equipment, which can be found in the majority of industrial applications
Numerical models of the crane mechanisms and drives allow for a wide inspection of the overhead crane for example by investigating the payload trajectory while taking into account existing obstacles and for analyzing the energy consumption
This paper presents the analysis of overhead crane mechanisms operation for energy consumption
Summary
Overhead cranes are dominant pieces of handling equipment, which can be found in the majority of industrial applications. Paper [11] faces the problem of energy loses in AC powered overhead crane by proposing the application of an auxiliary energy storing device to hoisting plants. The authors of paper [5] evaluate a hybrid configuration and improved management system for the 65 tones RTG driven by diesel generators Supercapacitors, in this case constituting Energy Storage System (ESS), were connected to a DC-bus and controlled based on the voltage of the DC – bus. A new approach presented in this paper is developed by engaging numerical simulations with an experimentally measured amount of the energy consumed by the drives control system and energy necessary for releasing the brakes This approach gives a comprehensive view of energetic relations between each of mechanism in cranes, what provides the possibility of the energy recuperation or more rationally energy management.
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