Design and implementation of electric drives and control systems for mining excavators

Malafeev, S. I.; Novgorodov, A.A.

doi:10.3103/s1068371216100035

Cited by 19 publications

(5 citation statements)

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“…The energy saving level of the excavator, implemented in the paper, is more specific than the wide range (20% to 30%) indicated in previous studies [17], [18], [24].…”

Section: Discussionmentioning

confidence: 86%

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Identifying the factors influencing the voltage quality of 6kV grids when using electric excavators in surface mining

Thanh¹,

Bun²

2022

Min. miner. depos.

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Purpose. The research purpose is to study the relationship between the number of electric excavators and their impact on reducing the voltage losses. As a result of the research, it becomes possible to obtain factors that can help the manager to correctly understand the effect of power compensation caused by the over-excitation mode of electric excavators. Methods. The paper uses the Jacobian matrix transformation to simulate the power flows of electric excavators, the driving mechanisms of which are mainly synchronous motors. The input data for the simulation is the in-situ measurement data representing the inverse power flow. A diagram and a software to determine the factors corresponding to the number of electric excavators are also provided. Findings. A cross-reference table has been compiled showing the ratio of factors corresponding to the number of electric excavators in a 6kV grid. An appropriate software has also been developed, including a table for correcting typical equations for calculating voltage losses. Originality. The proposed factor is conditioned by over-excitation mode of excavators operating as compensation machines in a 6kV grid. Practical implications. When calculating the voltage loss in a 6kV grid of surface mines, if the design feeder contains electric excavators, a modified factor should be added to give a correct idea of the voltage quality.

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“…The energy saving level of the excavator, implemented in the paper, is more specific than the wide range (20% to 30%) indicated in previous studies [17], [18], [24].…”

Section: Discussionmentioning

confidence: 86%

“…The energy saving efficiency of EEx is determined in the range from 20 to 30%, taking into account the individual consideration of each excavator [15], [17], [18].…”

Section: Figure 4 Simulation Results Of a Mining Shovels Cycle With A...mentioning

confidence: 99%

Identifying the factors influencing the voltage quality of 6kV grids when using electric excavators in surface mining

Thanh¹,

Bun²

2022

Min. miner. depos.

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“…Numerous studies have explored the application of electric actuators in excavators. In [7], a novel mechatronic system utilizing DC motors and transistor power transducers was proposed for mining excavators, aiming to achieve a 20-30% reduction in power consumption. Additionally, in [8], researchers aimed to alleviate the load on electric actuators in excavators by incorporating an additional elastic damping device into the excavator's kinematic scheme.…”

Section: Introductionmentioning

confidence: 99%

New Design of an Electrical Excavator and Its Path Generation for Energy Saving and Obstacle Avoidance

Ahmadi Khiyavi,

Seo,

Lin

2024

Vehicles

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This study’s goals are divided into two categories. The first is to design and build an excavator equipped with parallel electrical linear actuators. The second is to generate and test a PSO-based and a PFM-based path for this excavator in order to save energy by reducing energy consumption, improve the digging accuracy by minimizing the deviation between the desired and dug surfaces of the ground, and prevent colliding with subsurface objects. For this purpose, computer vision was employed to improve monitoring and verification. Five types of experiments were carried out in this investigation. The first two and the other three examined the impact of energy conservation in PSO- and PFM-based path generation, respectively. Finally, the results from these experiments were compared to identify and show the effect of optimal path generation.

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“…When diagnosing ED of general structure, known methods [16]- [18] and approaches are applied: sequential check "from end to beginning"; simulation of intermediate signals; opening of feedback circuit; replacement and exclusion of separate elements; vibration method [19], [10], [20].…”

Section: Introductionmentioning

confidence: 99%

Choice of Parameters for the Electrodrive Diagnostic System of Hybrid Vehicle Traction

Arhun

Borodenko

Hnatov

et al. 2020

Latvian Journal of Physics and Technical Sciences

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When operating a hybrid vehicle (HEV), it is important to reduce maintenance and repair costs. The HEV electric drive (ED) consists of electronic, electrical and mechanical parts and is considered a complex diagnostic model. The availability of an electrical part greatly simplifies the process of monitoring and obtaining information about the state of the system. In order to create a hybrid diesel-electric propulsion system (HDEPS), the choice of structural and functional parameters as diagnostic ones is justified, the control points are chosen, and the necessary accuracy and unambiguity of measurements are determined. Qualitative evaluations of the electrical processes occurring in the power supply circuit of ED from a high-voltage accumulator battery for the selection of diagnostic parameters according to the criteria of sensitivity, informative character, stability and manufacturability of measurements are presented. It has been revealed that during HDEPS diagnostics both stable and transient modes of operation of electric machines should be considered; for analysis of ED technical state it is necessary to have information about current mode of HDEPS load; for measurement of instantaneous values of supply voltage and consumption current it is necessary to select the sensors with short response time and linear conversion function. In terms of sensitivity to structural changes in the circuit and parametric deviations, it is necessary to choose, as diagnostic parameters, the voltage or current, depending on the mode of operation of the ED and the point of measurement of the electrical value. The obtained results are the basis for creating a new system of diagnostics of electric power supply HDEPS in this direction.

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Design and implementation of electric drives and control systems for mining excavators

Cited by 19 publications

References 0 publications

Identifying the factors influencing the voltage quality of 6kV grids when using electric excavators in surface mining

Identifying the factors influencing the voltage quality of 6kV grids when using electric excavators in surface mining

New Design of an Electrical Excavator and Its Path Generation for Energy Saving and Obstacle Avoidance

Choice of Parameters for the Electrodrive Diagnostic System of Hybrid Vehicle Traction

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