The Experts below are selected from a list of 67557 Experts worldwide ranked by ideXlab platform
Zhongzheng Lin - One of the best experts on this subject based on the ideXlab platform.
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Resonant Wireless Charging System Design for 110-kV High-Voltage Transmission Line Monitoring Equipment
IEEE Transactions on Industrial Electronics, 2019Co-Authors: Changsong Cai, Rong Liu, Junhua Wang, Zhijian Fang, Pengcheng Zhang, Mengjiao Long, Meilin Hu, Zhongzheng LinAbstract:A novel high-voltage operation featured wireless power transfer system for Monitoring Equipment charging on a 110-kV high-voltage transmission line based on magnetic resonant coupling is studied and designed in this paper. With consideration of operation environment on transmission line and electrical transmission tower, an overall scheme is proposed through installation position, coupling structure, and driving topology design. In order to improve the system's suitability in high-voltage environment, related optimization methods including constraining power flow path, improving quality factor, and coupling have been adopted. Since the coupling coils are fixed at both ends of an insulator string, a barrel-shaped high-permeability material layer is added to constrain the magnetic field distribution. Moreover, cross impacts between transmission line and the charging system are analyzed. The influence of a power frequency magnetic field on the charging system is calculated and electric distribution of the insulator string with the charging system is simulated. Analysis results indicate that cross impacts can be negligible. Experimental results verify that the transmission power can meet power supply requirements and the designed charging system can be operated stably under the high-voltage condition.
Rong Liu - One of the best experts on this subject based on the ideXlab platform.
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Resonant Wireless Charging System Design for 110-kV High-Voltage Transmission Line Monitoring Equipment
IEEE Transactions on Industrial Electronics, 2019Co-Authors: Changsong Cai, Rong Liu, Junhua Wang, Zhijian Fang, Pengcheng Zhang, Mengjiao Long, Meilin Hu, Zhongzheng LinAbstract:A novel high-voltage operation featured wireless power transfer system for Monitoring Equipment charging on a 110-kV high-voltage transmission line based on magnetic resonant coupling is studied and designed in this paper. With consideration of operation environment on transmission line and electrical transmission tower, an overall scheme is proposed through installation position, coupling structure, and driving topology design. In order to improve the system's suitability in high-voltage environment, related optimization methods including constraining power flow path, improving quality factor, and coupling have been adopted. Since the coupling coils are fixed at both ends of an insulator string, a barrel-shaped high-permeability material layer is added to constrain the magnetic field distribution. Moreover, cross impacts between transmission line and the charging system are analyzed. The influence of a power frequency magnetic field on the charging system is calculated and electric distribution of the insulator string with the charging system is simulated. Analysis results indicate that cross impacts can be negligible. Experimental results verify that the transmission power can meet power supply requirements and the designed charging system can be operated stably under the high-voltage condition.
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Design of a new portable telemedicine Monitoring Equipment based on NIOS II
2007 International Symposium on Intelligent Signal Processing and Communication Systems, 2007Co-Authors: Chaodong Ling, Huafeng Hong, Rong Liu, Jia-xian WangAbstract:A solution for end-user of the portable telemedicine Monitoring Equipment has been proposed in this paper. The hardware design scheme adopts SOPC technology based on NIOS II processor. The system modules are implemented on Quartus II V6.0 and have been validated on Altera 1C20 development kit. This paper focuses on the development process of hardware platform. The experimental result indicates that the Monitoring system can realize data acquisition, display, storage and transfer functions directly and accurately.
Changsong Cai - One of the best experts on this subject based on the ideXlab platform.
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Resonant Wireless Charging System Design for 110-kV High-Voltage Transmission Line Monitoring Equipment
IEEE Transactions on Industrial Electronics, 2019Co-Authors: Changsong Cai, Rong Liu, Junhua Wang, Zhijian Fang, Pengcheng Zhang, Mengjiao Long, Meilin Hu, Zhongzheng LinAbstract:A novel high-voltage operation featured wireless power transfer system for Monitoring Equipment charging on a 110-kV high-voltage transmission line based on magnetic resonant coupling is studied and designed in this paper. With consideration of operation environment on transmission line and electrical transmission tower, an overall scheme is proposed through installation position, coupling structure, and driving topology design. In order to improve the system's suitability in high-voltage environment, related optimization methods including constraining power flow path, improving quality factor, and coupling have been adopted. Since the coupling coils are fixed at both ends of an insulator string, a barrel-shaped high-permeability material layer is added to constrain the magnetic field distribution. Moreover, cross impacts between transmission line and the charging system are analyzed. The influence of a power frequency magnetic field on the charging system is calculated and electric distribution of the insulator string with the charging system is simulated. Analysis results indicate that cross impacts can be negligible. Experimental results verify that the transmission power can meet power supply requirements and the designed charging system can be operated stably under the high-voltage condition.
Carl T. Haas - One of the best experts on this subject based on the ideXlab platform.
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Investigation for Traffic Monitoring Equipment Evaluation Facility
2007Co-Authors: Dan Middleton, Ronald P White, Jason A Crawford, Ricky T Parker, Jongchul Song, Carl T. HaasAbstract:The Texas Department of Transportation's (TxDOT’s) Transportation Planning and Programming (TPP) Division routinely tests a wide variety of devices for counting axles or vehicles; measuring vehicle speed, headway, and gap; classifying vehicles by length and/or axle spacing; and weighing vehicles in-motion. However, TPP needs a traffic Monitoring Equipment evaluation facility to enhance its capabilities in conducting these tests, in facilitating training, and in allowing vendor comparisons and demonstrations. This project investigated funding sources, design options, and viable locations for this traffic Monitoring Equipment evaluation facility. The project provided research and development to design a generic facility to evaluate traffic data collection Equipment and sensors and perform traffic data collection research. This report covers the entirety of this 2-year project, identifying potential funding sources and candidate sites for further consideration, developing site design aspects for the two most promising sites, and evaluating Kistler Lineas Quartz weigh-in-motion sensors. The most prominent funding sources are construction funds (include the site as part of a TxDOT construction project) and State Planning and Research (SPR) funds. The most promising sites identified thus far are on I-35 north of Georgetown near the Bell County line. Evaluation of the Kistler sensors in concrete was very promising, but future research should test them in asphalt.
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INITIAL INVESTIGATION FOR TRAFFIC Monitoring Equipment EVALUATION FACILITY
2004Co-Authors: Dan Middleton, Ronald P White, Jason A Crawford, Jinze Song, Carl T. HaasAbstract:The Texas Department of Transportation's (TxDOT's) Transportation Planning and Programming (TPP) Division routinely tests a wide variety of devices for counting axles or vehicles; measuring vehicle speed, headway, and gap; classifying vehicles by length and/or axle spacing; and weighing vehicles in-motion. However, TPP needs a traffic Monitoring Equipment evaluation facility to enhance its capabilities in conducting these tests, in facilitating training, and in allowing vendor comparisons and demonstrations. This project investigated funding sources, design options, and viable locations for this traffic Monitoring Equipment evaluation facility. The project provided research and development to design a generic facility to evaluate traffic data collection Equipment and sensors and perform traffic data collection research. This report covers the first 9 months of this 2-year project, identifying potential funding sources and candidate sites for further consideration. The most prominent funding sources are construction funds (include the site as part of a TxDOT construction project) and State Planning and Research (SPR) funds. The most promising sites identified thus far are on I-35 north of Georgetown near the Bell County line. Future research will include an evaluation of Kistler Lineas Quartz weigh-in-motion (WIM) sensors, a determination of minimum pavement structural support to ensure adequate sensor service life, and a forensic evaluation pertaining to failure mode of East Texas in-pavement traffic Monitoring sensors.
He Wei - One of the best experts on this subject based on the ideXlab platform.
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Power supply of online Monitoring Equipment for transmission line
Electric power automation equipment, 2012Co-Authors: He WeiAbstract:The power supply device of outdoor online Monitoring Equipment for transmission line is developed.The power transfer equation of draw-out CT is established,based on which,the relationships between the power output and the CT ratio,iron core type and characteristics,and load are analyzed.A cooperative power supply scheme combining draw-out CT and lithium battery group is proposed.By comparing the measured secondary current of draw-out CT with the preset upper/lower current limit of Schmitt circuit,the winding ratio is automatically changed by relay to reduce its power consumption and increase its adaptability to line current.Through another Schmitt circuit,the charge/discharge times of parallel lithium battery group is cut down and the work and backup operating modes are switched over between two lithium batteries.Experimental test shows that the proposed scheme is reasonable,providing load with stable power.
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Power supply for Monitoring Equipment based on wind and solar generation system
Chinese Journal of Power Sources, 2011Co-Authors: He WeiAbstract:An improved power supply method combining wind and solar generation system was proposed with solar energy and battery as the main and wind energy as the compensation.The vertical axis impeller and the discharge circuit were adopted to solve the shortcomings of wind speed instability.The circuit could automatically adjust the power state and battery charge and discharge status and ensure the stable and long-term work of the on-line Monitoring Equipment.
