Hybridization of a backhoe loader: electric drive system design
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Universidade Federal de Minas Gerais
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Heavy machinery is critical to agriculture, construction, mining, and other sectors of a country’s economy. However, such vehicles consume a high amount of fuel, increasing production costs and the emission of polluting gases into the atmosphere. One of the alternatives to reduce fuel consumption is the electrification of these vehicles, but the definition of an optimal topology for the electrification of heavy vehicles is still under study, and works with electric drive systems projects for these machines are scarce. This paper presents the main characteristics of the design of an electric drive system for the electrification of a backhoe, including the control and simulation of the motor drive system, and presents a prototype bench and experimental tests carried out in the context of the hybridization topology presented. Based in these results, improvements are proposed and discussed with aid of computational simulation.
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heavy construction machinery; hybrid vehicle; drive system; backhoe loader; off-road vehicle, The literature on electrification of heavy vehicles is scarce and does not cover all aspects of electric drive system design in depth. Some of these works are presented in, but they focus on the mechanical aspects to encompass the hybrid solution. Another work addresses the hybridization of military vehicles, but focusing only on the design of the electric motor and the energy storage system. The authors in analyze the feasibility of electrifying agricultural machinery, with emphasis on the design of the electric motor and the cooling system. Something similar is described in, but the design aspects of the electric drive system are not addressed. The electric motor performance requirements and design are carried out in, without addressing other components of the electrical system. The electrification of a hydraulic excavator with a speed and displacement variable pump is presented in, achieving a reduction in idle consumption from 2.05 kW to 0.7 kW, but without emphasis on the electrical system design. Other works address the electrification of heavy-duty off-road vehicles but focus on energy management aspects.
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https://www.mdpi.com/2075-1702/11/4/471