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249:(DC) for those systems (primarily public transit systems) using DC for traction power. The three-phase voltage from the local utility is stepped down and rectified in the traction substations to provide the required DC voltage.
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of the traction system, with no feed into a traction current distribution network) or centralized (for the supply of the
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Traction current converter plants are either decentralized (where one plant directly supplies the
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were also used, especially where the desired output was DC current from an AC source.
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rectifier systems are used for conversion from AC power to DC traction power.
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Originally, the conversion equipment usually consisted of one or more
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Central traction current converter plants are generally found in
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to supply railways, trams (streetcars) or trolleybuses with
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In the 1920s, DC was derived using electronic valves (
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50:. Unsourced material may be challenged and
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293:, mechanically coupled to a common shaft.
130:Karlsruhe traction current converter plant
114:Learn how and when to remove this message
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153:
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386:List of railway electrification systems
309:). In modern systems, high-voltage DC (
241:, as used by many older systems, or to
225:These systems can be used to convert
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48:adding citations to reliable sources
138:Woburn rail traction substation in
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287:three-phase synchronous AC motors
175:traction current converter plant
161:Anchor Bridge Substation on the
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744:Railway electrification systems
235:railway electrification systems
408:Railway electrification system
193:from the form provided by the
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749:Tram electrification systems
564:Electro-diesel multiple unit
344:(primarily in the cities of
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519:Conduit current collection
291:single-phase AC generators
233:(AC) for the supply of AC
201:service to an appropriate
559:Electro-diesel locomotive
539:Railway electric traction
509:Ground-level power supply
388:provides further detail.
372:and the German states of
237:at a lower frequency and
229:50 Hz or 60 Hz
195:electrical power industry
183:traction power substation
780:Traction power networks
775:Electric rail transport
489:Railway electrification
444:Railway electrification
261:Traction substation in
770:Electrical substations
590:Traction power network
554:Electric multiple unit
374:Mecklenburg-Vorpommern
335:traction power network
307:mercury arc rectifiers
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600:Traction powerstation
398:Traction powerstation
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187:electrical substation
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63:"Traction substation"
380:as well as parts of
165:in Connecticut, U.S.
44:improve this article
595:Traction substation
549:Electric locomotive
514:Stud contact system
231:alternating current
171:traction substation
574:Rubber-tyred metro
451:Current collectors
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295:Rotary converters
179:rectifier station
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285:sets containing
215:traction current
148:Hutt Valley Line
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327:overhead lines
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247:direct current
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199:public utility
191:electric power
189:that converts
163:New Haven Line
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583:Power network
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104:December 2009
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65: –
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59:Find sources:
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29:This article
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569:Multi-system
473:Contact shoe
468:Trolley pole
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239:single phase
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42:Please help
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708:Switzerland
698:Former USSR
671:New Zealand
504:Fourth rail
378:Brandenburg
362:Switzerland
227:three-phase
221:Conversions
144:New Zealand
764:Categories
609:By country
499:Third rail
463:Pantograph
403:Trolleybus
331:third rail
140:Lower Hutt
74:newspapers
661:Lithuania
616:Australia
544:Power car
354:Nuremberg
315:thyristor
263:Loopealse
253:Equipment
211:frequency
209:type and
31:does not
681:timeline
666:Malaysia
392:See also
321:Location
277:Rotating
245:AC into
718:Ukraine
636:Germany
626:Estonia
621:Austria
358:Austria
342:Germany
271:Estonia
267:Tallinn
243:rectify
207:current
203:voltage
159:Cos Cob
88:scholar
52:removed
37:sources
713:Turkey
703:Sweden
693:Russia
688:Poland
676:Norway
656:Latvia
631:France
370:Sweden
366:Norway
301:Static
90:
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61:
737:Lists
651:Japan
641:India
95:JSTOR
81:books
646:Iran
384:. A
376:and
360:and
311:HVDC
289:and
197:for
67:news
35:any
33:cite
356:),
350:Ulm
329:or
181:or
46:by
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217:.
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177:,
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169:A
142:,
436:e
429:t
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150:.
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111:(
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102:(
92:·
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