Novel Cooperative Controller Design of Heterogeneous Energy Storages for Economic Applications in Electric Railway Systems

Lee, Hansang; Kim, Jae-Won; Lee, Changmu; Kim, Joorak

doi:10.1007/s42835-019-00341-4

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…Singh et al said that CNC machine tools, as the working machine of equipment manufacturing, are the mainstay of a country's industrial development [4]. Lee and others said that due to the continuous advancement of industrial modernization, the requirements of modern manufacturing for CNC machine tools have long been no longer focused on simple automated processing but have put forward more advanced processing accuracy, processing speed, and processing technology for high demands [5]. Lan et al stated that from the perspective of these needs, high-end CNC machine tools would be a good choice, but the actual processing of highend CNC machine tools is only used to complete the processing process and for the similarity processing of microholes.…”

Section: Literature Reviewmentioning

confidence: 99%

Analysis and Design of Cooperative Control Solutions for Electrical Systems of Laser CNC Machines

Shao

2022

Shock and Vibration

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In order to further improve the collaborative control efficiency of the electrical system of the laser CNC machine tool, an electrical system based on the ultrafast laser CNC machine tool is proposed. The design of the collaborative control scheme is discussed from three aspects: the overall control scheme design, hardware structure design, and control software implementation of the electrical system of the laser numerical control machine tool. The experimental results show that the length of the metal sheet processed by the electrical system of the laser CNC machine tool is 5.3 cm and the width is about 3.6 cm, and the actual processing aperture size will also change according to the set number of variable radius turns, and more precise processing can be enabled in the online test. The research results show that this electrical collaborative control system scheme has strong practicability and feasibility. With the help of system upgrades and optimization, the efficient integration of laser processing technology and numerical control technology can be better achieved. It should be noted that the machining process of the machine tool is also required to make in-depth improvements, which can maximize the operating efficiency and machining accuracy of the electrical system of the CNC machine tool. The laser CNC machine tool researched and developed in this paper verifies the rationality and feasibility of the collaborative control scheme through practical experiments, which can meet the processing requirements and realize the integration of laser processing technology and numerical control technology. High machining efficiency and machining accuracy.

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Section: Literature Reviewmentioning

confidence: 99%

Analysis and Design of Cooperative Control Solutions for Electrical Systems of Laser CNC Machines

Shao

2022

Shock and Vibration

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“…Many efforts are being made to reduce carbon emissions in response to climate change around the world [1][2][3]. In particular, Korea aims to reduce carbon emissions by 24.4% compared to 2017 levels by 2030.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Train Brake Position-Based Control Method for Regenerative Inverters

2022

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The use an inverter is one of the representative ways to utilize regenerative braking energy in railway systems. Due to the nature of urban railways that generate a large amount of regenerative energy, the economic advantages are clear. However, in the case of the existing inverter operation method, a method of operating the inverter using the threshold voltage is used, which has a disadvantage in that power cannot be utilized between the no-load voltage and the threshold voltage. Therefore, in this paper, we propose an optimal location selection method and capacity calculation method for installing a regenerative inverter in an urban rail system, and a control method according to the train brake position to increase the regenerative energy utilization rate. First, the inverter capacity and location were selected by selecting the maximum regenerative energy generation for each substation section through the train performance simulation (TPS) based DC power simulation (DCPS). An inverter control method based on train brake position (BP method) is introduced. Finally, PSCAD/EMTDC, a power analysis program, was used to verify the proposed method. As a result, the use of regenerative energy by an inverter increased by about 62.6%, and more energy was saved at nearby substations through the BP method.

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Novel Cooperative Controller Design of Heterogeneous Energy Storages for Economic Applications in Electric Railway Systems

Cited by 2 publications

References 4 publications

Analysis and Design of Cooperative Control Solutions for Electrical Systems of Laser CNC Machines

Analysis and Design of Cooperative Control Solutions for Electrical Systems of Laser CNC Machines

A Study on the Train Brake Position-Based Control Method for Regenerative Inverters

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