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DC traction power system grounding
IEEE Transactions on Industry Applications, 2002This paper provides a review of the present practice of DC traction power system grounding methods employed in North America. An analysis of equipment grounding, system grounding, and their relationships to achieve optimized equipment and personal safety is derived.
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Wind power DC grid and Variable Speed DC power system operating control
Proceedings of The 7th International Power Electronics and Motion Control Conference, 2012VSC-HVDC power transmission system that connected long-distance high-capacity wind farm to the grid will be an important direction of the wind power technology development. The grid access solutions designed according to traditional AC grid structure could not fully reflect the advantages of the VSC-HVDC transmission. Firstly the typical grid solutions
Xinyin Zhang, Zaijun Wu, Sipeng Hao
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DC and power electronic systems
15th IET International School on High Voltage Engineering and Testing 2008, 2008HVDC is in many respects the ultimate power electronics based FACTS device which can act within an existing AC network or even replace parts of it. In evaluating the usefulness of HVDC it is important to remember the controllability which it adds to the power system in addition to its bulk power transfer capabilities.
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Intelligent DC Power Management System
SAE Technical Paper Series, 1999<div class="htmlview paragraph">Most heavy-duty vehicles including trucks, tractors, buses, ambulances, refrigerated trailers, passenger vehicles, electric vehicles and boats have high amp Direct Current systems. Unlike the majority of components and systems in such vehicles, DC electrical systems have undergone very few major improvements in ...
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Integration of wind power by DC-power systems
2005 IEEE Russia Power Tech, 2005The world climate changing is driving the electric power production towards renewable energy sources. The development of wind turbines has reached the power level of 5 MW and wind farms up to 1000 MW are planned. Investigations have shown that the cost for production of wind energy is in the same level as coal and gas.
Ola Carlson, Stefan Lundberg
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Photovoltaic power conditioning system with novel dc-dc converter
Proceedings of 14th International Power Electronics and Motion Control Conference EPE-PEMC 2010, 2010Rising energy intensity of production as well as the steady increase in energy prices are major factors which highlights the energy-saving problem. This paper presents middle power grid connected photovoltaic power supply system. Also in this paper proposed new circuit of dc-dc converter with small ripples of input current for which basic relations and
Kriukov Konstantin Viktorovich +3 more
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Power conversion systems for modern ac–dc power systems
European Transactions on Electrical Power, 2011SUMMARYThis paper discusses the present and future power conversion systems for high voltage direct current transmission systems. It begins with an introduction into the commercially available semiconductor switching devices and future wide bandgap devices specifically silicon carbide devices.
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Cascaded DC–DC Converter Photovoltaic Systems: Power Optimization Issues
IEEE Transactions on Industrial Electronics, 2011This paper investigates the issues of ensuring global power optimization for cascaded dc-dc converter architectures of photovoltaic (PV) generators irrespective of the irradiance conditions. The global optimum of such connections of PV modules is generally equivalent with performing the maximum power point tracking (MPPT) on all the modules.
Bratcu, Antoneta Iuliana +4 more
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Simulation of DC power distribution systems
Proceedings of Industrial and Commercial Power Systems Conference, 2002Direct current (DC) power distribution systems have been extensively used in nuclear power plants and transit systems. The major concern of DC system studies is the voltage and voltage drop at load buses. A Newton-Raphson method based DC load flow algorithm and a DC system simulation package have been developed and reported in this paper. DC generators,
null Erzhuan Zhou, A. Nasle
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DC traction power negative cable monitoring system
Proceedings of the 2006 IEEE/ASME Joint Rail Conference, 2006In DC traction power distribution systems, rail bond damages, failures or accidental severing of individual negative feeders are generally undetected by operations as it typically leads to negligible impact on the rolling stock performance. However, a negative return circuit failure increases the overall resistance of the traction power negative return
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