The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform
Vikas Singh - One of the best experts on this subject based on the ideXlab platform.
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Future Shipboard MVdc System Protection Requirements and Solid-State Protective Device Topological Tradeoffs
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2017Co-Authors: Robert M Cuzner, Vikas SinghAbstract:The search for the optimum architecture for shipboard medium voltage dc\nintegrated power systems must take into account the short-circuit\nprotection in addition to overarching goals of efficiency,\nsurvivability, reliability of power, and cost effectiveness. Presently,\naccepted approaches to protection are ``unit-based,{''} which means the\npower converter(s) feeding the bus coordinate with no-load\nelectromechanical switches to isolate faulted portions of the bus.\nHowever, ``breaker-based{''} approaches, which rely upon solid-state\ncircuit breakers for fault mitigation, can result in higher reliability\nof power and potentially higher survivability. The inherent speed of\noperation of solid-state Protective Devices will also play a role in\nfault isolation, hence reducing stress level on all system components. A\ncomparison study is performed of Protective Device topologies that are\nsuitable for shipboard distribution systems rated between 4 and 30 kVdc\nfrom the perspectives of size and number of passive components required\nto manage the commutation energy during sudden fault events and\npackaging scalability to higher current and voltage systems. The\nimplementation assumes a multichip silicon carbide (SiC) 10-kV, 240-A\nMOSFET/junction barrier Schottkey (JBS) diode module.
Robert M Cuzner - One of the best experts on this subject based on the ideXlab platform.
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Future Shipboard MVdc System Protection Requirements and Solid-State Protective Device Topological Tradeoffs
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2017Co-Authors: Robert M Cuzner, Vikas SinghAbstract:The search for the optimum architecture for shipboard medium voltage dc\nintegrated power systems must take into account the short-circuit\nprotection in addition to overarching goals of efficiency,\nsurvivability, reliability of power, and cost effectiveness. Presently,\naccepted approaches to protection are ``unit-based,{''} which means the\npower converter(s) feeding the bus coordinate with no-load\nelectromechanical switches to isolate faulted portions of the bus.\nHowever, ``breaker-based{''} approaches, which rely upon solid-state\ncircuit breakers for fault mitigation, can result in higher reliability\nof power and potentially higher survivability. The inherent speed of\noperation of solid-state Protective Devices will also play a role in\nfault isolation, hence reducing stress level on all system components. A\ncomparison study is performed of Protective Device topologies that are\nsuitable for shipboard distribution systems rated between 4 and 30 kVdc\nfrom the perspectives of size and number of passive components required\nto manage the commutation energy during sudden fault events and\npackaging scalability to higher current and voltage systems. The\nimplementation assumes a multichip silicon carbide (SiC) 10-kV, 240-A\nMOSFET/junction barrier Schottkey (JBS) diode module.
Viktor Milardić - One of the best experts on this subject based on the ideXlab platform.
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Selection of surge Protective Devices for low-voltage systems connected to overhead line
IEEE Transactions on Power Delivery, 2010Co-Authors: Viktor Milardi??, Ivica Pavi??, Viktor Milardić, Ivo Uglešić, Ivica PavićAbstract:This paper presents a procedure of choosing an appropriate surge Protective Device for low-voltage systems connected to an overhead line. For a typical surge protection application, an appropriate Electromagnetic Transients Program model is devised. The energy overload is calculated for a surge Protective Device following a simulation of the lightning effect. This way, it is possible to determine the required class for the surge Protective Device in question. The procedure has been tested on some typical overhead low-voltage networks. The results of these calculations, as well as very good service experiences, demonstrate that the use of Class II surge Protective Devices seems to be appropriate for service entrances in buildings that have no lightning protection systems.
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Overhead surge protection of low-voltage systems connected to line
2007Co-Authors: Ivo Uglešić, Viktor MilardićAbstract:A procedure of choosing the appropriate surge Protective Device for low-voltage systems is presented. For typical surge protection application an appropriate EMTP model is devised. The energy overload is calculated for a surge Protective Device following a simulation of the lightning effect. In this way it is possible to determine a required class for a surge Protective Device in question. The procedure is tested on some typical overhead low-voltage network. According to calculation results and very good service experiences, Class II surge Protective Devices can be adequately used for service entrance of buildings.
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Surge Protection of Low-Voltage Systems Connected to Overhead Line
2006Co-Authors: Ivo Uglešić, Viktor MilardićAbstract:A procedure of choosing the appropriate surge Protective Device for low-voltage systems is presented. For typical surge protection application an appropriate EMTP model is devised. The energy overload is calculated for a surge Protective Device following a simulation of the lightning effect. In this way it is possible to determine a required class for a surge Protective Device in question. The procedure is tested on some typical overhead low-voltage network. According to calculation results and very good service experiences, Class II surge Protective Devices can be adequately used for service entrance of buildings.
Linda S Tyler - One of the best experts on this subject based on the ideXlab platform.
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using a closed system Protective Device to reduce personnel exposure to antineoplastic agents
American Journal of Health-system Pharmacy, 2003Co-Authors: Catherine Wick, Matthew H Slawson, James A Jorgenson, Linda S TylerAbstract:Surface contamination with and personnel exposure to antineoplastic agents before and after the implementation of a closed-system Protective Device were studied. Samples were collected before and six months after implementation of PhaSeal, a closed-system Device for limiting exposure to antineoplastic agents during preparation and administration. Personnel exposure was evaluated by collecting 24-hour urine samples from pharmacists, pharmacy technicians, and nurses working full-time in a chemotherapy drug infusion center and pharmacy. Surface contamination was assessed by wiping potentially exposed surfaces. Both types of samples were analyzed for cyclophosphamide and ifosfamide by high-performance liquid chromatography-electrospray ionization-tandem mass spectrometry. All 17 wipe samples collected before implementation of PhaSeal had detectable levels of cyclophosphamide, and 11 were positive for ifosfamide. Six months after system implementation, 7 of 21 wipe samples had detectable levels of cyclophosphamide and 15 were positive for ifosfamide. Of eight employees who provided urine samples, six were positive for cyclophosphamide and two for ifosfamide before implementation, and none were positive for either drug after implementation. The PhaSeal system appeared to reduce exposure of health care personnel to cyclophosphamide and ifosfamide.
Liu Shao-ju - One of the best experts on this subject based on the ideXlab platform.
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Application and Development of Microprocessor-Based Protective Devices in Power Supply System
Non-ferrous Metallurgical Equipment, 2005Co-Authors: Liu Shao-juAbstract:Based on the summarization of application of microprocessor-based integrated Protective Device, the strong function and technique characteristic,as well as the effect and influence on integrated Protective Devices in power supply systems are presented. The paper describes the characteristic of the Device and gives suggestions on the further improvement.
