Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/HVDC_converter> ?p ?o }
- HVDC_converter abstract "An HVDC converter converts electric power from high voltage alternating current (AC) to high-voltage direct current (HVDC), or vice versa. HVDC is used as an alternative to AC for transmitting electrical energy over long distances or between AC power systems of different frequencies. HVDC converters capable of converting up to two gigawatts (GW) and with voltage ratings of up to 900 kilovolts (kV) have been built, and even higher ratings are technically feasible. A complete converter station may contain several such converters in series and/or parallel.Almost all HVDC converters are inherently bi-directional; they can convert either from AC to DC (rectification) or from DC to AC (inversion). A complete HVDC system always includes at least one converter operating as a rectifier (converting AC to DC) and at least one operating as an inverter (converting DC to AC). Some HVDC systems take full advantage of this bi-directional property (for example, those designed for cross-border power trading, such as the Cross-Channel link between England and France). Others, for example those designed to export power from a remote power station such as the Itaipu scheme in Brazil, may be optimised for power flow in only one preferred direction. In such schemes, power flow in the non-preferred direction may have a reduced capacity or poorer efficiency.HVDC converters can take several different forms. Early HVDC systems, built until the 1930s, were effectively rotary converters and used electromechanical conversion with motor-generator sets connected in series on the DC side and in parallel on the AC side. However, all HVDC systems built since the 1940s have used electronic (static) converters.Electronic converters for HVDC are divided into two main categories. Line-commutated converters(HVDC classic) are made with electronic switches that can only be turned on. Voltage-sourced converters(HVDC light) are made with switching devices that can be turned both on and off. Line-commutated converters (LCC) used mercury-arc valves until the 1970s, or thyristors from the 1970s to the present day. Voltage-source converters (VSC), which first appeared in HVDC in 1997, use transistors, usually the Insulated-gate bipolar transistor (IGBT).As of 2012, both the line-commutated and voltage-source technologies are important, with line-commutated converters used mainly where very high capacity and efficiency are needed, and voltage-source converters used mainly for interconnecting weak AC systems, for connecting large-scale wind power to the grid or for HVDC interconnections that are likely to be expanded to become Multi-terminal HVDC systems in future. The market for voltage-source converter HVDC is growing fast, driven partly by the surge in investment in offshore wind power, with one particular type of converter, the Modular Multi-Level Converter (MMC) emerging as a front-runner.".
- HVDC_converter thumbnail HVDC_converter_symbol.png?width=300.
- HVDC_converter wikiPageExternalLink Other-Documents.
- HVDC_converter wikiPageExternalLink Comparison%20of%20HVDC%20Light%20and%20HVDC%20Classic%20Site%20Aspects.pdf.
- HVDC_converter wikiPageID "37935577".
- HVDC_converter wikiPageLength "42681".
- HVDC_converter wikiPageOutDegree "141".
- HVDC_converter wikiPageRevisionID "643836932".
- HVDC_converter wikiPageWikiLink Adjustable-speed_drive.
- HVDC_converter wikiPageWikiLink Alternating_current.
- HVDC_converter wikiPageWikiLink Australia.
- HVDC_converter wikiPageWikiLink Berlin.
- HVDC_converter wikiPageWikiLink Brazil.
- HVDC_converter wikiPageWikiLink Breakdown_voltage.
- HVDC_converter wikiPageWikiLink Canada.
- HVDC_converter wikiPageWikiLink Capacitor.
- HVDC_converter wikiPageWikiLink Category:High-voltage_direct_current.
- HVDC_converter wikiPageWikiLink China.
- HVDC_converter wikiPageWikiLink Cross_Sound_Cable.
- HVDC_converter wikiPageWikiLink Denmark.
- HVDC_converter wikiPageWikiLink Diode.
- HVDC_converter wikiPageWikiLink Eel_River_Converter_Station.
- HVDC_converter wikiPageWikiLink Efficiency.
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- HVDC_converter wikiPageWikiLink Electric_generator.
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- HVDC_converter wikiPageWikiLink France.
- HVDC_converter wikiPageWikiLink Gas-filled_tube.
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- HVDC_converter wikiPageWikiLink Gigawatt.
- HVDC_converter wikiPageWikiLink HVDC_Cross-Channel.
- HVDC_converter wikiPageWikiLink HVDC_Gotland.
- HVDC_converter wikiPageWikiLink HVDC_Hellsjön–Grängesberg.
- HVDC_converter wikiPageWikiLink HVDC_Inter-Island.
- HVDC_converter wikiPageWikiLink HVDC_Itaipu.
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- HVDC_converter wikiPageWikiLink High-voltage_direct_current.
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- HVDC_converter wikiPageWikiLink IGBT_transistor.
- HVDC_converter wikiPageWikiLink Inductor.
- HVDC_converter wikiPageWikiLink Institute_of_Electrical_and_Electronics_Engineers.
- HVDC_converter wikiPageWikiLink Insulated-gate_bipolar_transistor.
- HVDC_converter wikiPageWikiLink Inverter_(electrical).
- HVDC_converter wikiPageWikiLink Japan.
- HVDC_converter wikiPageWikiLink Konti–Skan.
- HVDC_converter wikiPageWikiLink List_of_HVDC_projects.
- HVDC_converter wikiPageWikiLink London.
- HVDC_converter wikiPageWikiLink Los_Angeles.
- HVDC_converter wikiPageWikiLink Lyon.
- HVDC_converter wikiPageWikiLink Lyon–Moutiers_DC_transmission_scheme.
- HVDC_converter wikiPageWikiLink Mercury-arc_valve.
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- HVDC_converter wikiPageWikiLink Murraylink.
- HVDC_converter wikiPageWikiLink Nelson_River_DC_Transmission_System.
- HVDC_converter wikiPageWikiLink Netherlands.
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- HVDC_converter wikiPageWikiLink NorNed.
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- HVDC_converter wikiPageWikiLink Offshore_wind_power.
- HVDC_converter wikiPageWikiLink Optical_fiber.
- HVDC_converter wikiPageWikiLink Optics.
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- HVDC_converter wikiPageWikiLink Pacific_DC_Intertie.
- HVDC_converter wikiPageWikiLink Power_inverter.
- HVDC_converter wikiPageWikiLink Power_station.
- HVDC_converter wikiPageWikiLink Pulse-width_modulation.
- HVDC_converter wikiPageWikiLink Rectifier.
- HVDC_converter wikiPageWikiLink René_Thury.
- HVDC_converter wikiPageWikiLink Resistor.
- HVDC_converter wikiPageWikiLink Rotary_converter.
- HVDC_converter wikiPageWikiLink Russia.
- HVDC_converter wikiPageWikiLink Sakuma_Dam.
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- HVDC_converter wikiPageWikiLink Semiconductor.
- HVDC_converter wikiPageWikiLink Soviet_Union.
- HVDC_converter wikiPageWikiLink Spain.
- HVDC_converter wikiPageWikiLink Square_wave.
- HVDC_converter wikiPageWikiLink Sweden.
- HVDC_converter wikiPageWikiLink Switch.
- HVDC_converter wikiPageWikiLink Thyratron.
- HVDC_converter wikiPageWikiLink Thyristor.
- HVDC_converter wikiPageWikiLink Trans_Bay_Cable.
- HVDC_converter wikiPageWikiLink Transformer.
- HVDC_converter wikiPageWikiLink Transistor.
- HVDC_converter wikiPageWikiLink Ukraine.
- HVDC_converter wikiPageWikiLink United_States.
- HVDC_converter wikiPageWikiLink Uno_Lamm.
- HVDC_converter wikiPageWikiLink Volt.
- HVDC_converter wikiPageWikiLink Watt.
- HVDC_converter wikiPageWikiLink Wind_power.