Research on the control strategy of power train systems for hybrid
To enhance the energy saving efficiency, this paper proposes an innovative electric hybrid hydraulic excavator, as shown in Fig. 1. The engine, electric motor/generator, invertor, battery, hydraulic pump, and planetary gear are installed in the powertrain of the excavator. The hydraulic motor and generator are installed in the return line of.
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This paper studies on parameters matching and control strategy of power train systems for hybrid hydraulic excavators (HHEs). Load profiles of a 20-t excavator are measured and analyzed.
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This paper systematically analyzed the performance of the powertrain hybridization of hydraulic excavator and compared the main performance among the parallel, the series and the conventional configurations based on a 5-ton excavator. The data of the conventional excavator used for analysis were gathered from the real working process, while.
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The new 16-ton wheeled excavator and 30-ton crawler excavator feature an electric powertrain in place of the diesel engines typically used to power these machines. Included in the electric powertrain are several Danfoss components, including a permanent magnet motor from Danfoss' Editron division. A Danfoss controller is used to for control.
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In the series-parallel hybrid powertrain configura-tion of an excavator, the engine drives the generator directly. The hydraulic pumps are driven by generator in series, and the swing electric motor is driven by gen-erator and battery or supercapacitor in parallel.31 Although the fuel consumption of series-parallel hybrid
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The structure of the HPTS in the excavator is given as Fig. 3.In this system, an engine and an electric machine are adopted to co-drive pumps. The system uses the electric machine of high efficiency to balance the load fluctuation by working in motor mode and generator mode, to stabilize the working points of the engine in the high efficiency area, and then to improve the overall efficiency of.
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The main factor for low efficiency and high emissions of the traditional excavator is the low efficiency of the power train system. 1 Currently, the main method of improving the efficiency of the power train system is hybrid power train systems (HPTSs). 2 - 4 The HPTSs adopt two or more power sources to drive the load 5 - 7 and to make full use.
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This paper presents an innovative powertrain design and an energy regeneration system for hybrid hydraulic excavators to reduce energy consumption and emissions. The proposed system is designed to maximize engine efficiency and make full use of the energy gained from boom and arm retraction. The powertrain features an innovative design that incorporates a continuously variable transmission.
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Currently, there are several energy saving methods for HE and they mainly concentrate on the following three aspects: (1) improving the performance of working components; (2) reforming the hydraulic system; (3) ameliorating the situation of power matching between the diesel engine, the hydraulic system and the load.
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An innovative powertrain is proposed for hybrid hydraulic excavator. • A gear box is integrated to adjust torque and speed of power source. • An online energy management strategy is proposed to improve the engine's efficiency. • Proposed system offers improvements in energy saving and regeneration up to 5.86% and 48.2%. •
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The powertrain solutions that integrates the engine, hydraulic parts, controller, to provide customers with system solutions. Dual-pump design and Integral valve design, make the excavator structure compact, performance excellence. LSC hydraulic system, distribute according to demand, manoeuvrability better handling. Nr.
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Order Download Introduction During the excavator design, we need to consider several key factors, such as the special demand of the market, noise and emissions regulations, reducing costs while improving performance.
Figure 1 from Development of Power Train of Hybrid Power Excavator
The electric excavator's powertrain system — provided by Danfoss Editron, a subsidiary of Danfoss Power Solutions — eliminates the noisy, dirty diesel engine in the 323F and replaces it with a battery pack and electric motor to power the excavator's hydraulic system.
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