elect3 - Power Power Summary Alternator u Background Type...

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Unformatted text preview: Power Power Summary Alternator u Background Type Magneto-Electric Holmes (1856) Alliance (1857) Dynamo-Electric Gramme (1873) Siemens (1873) Approx. Speed Output (rpm) (kw) Weight u de Meritens u Gramme u Wilde & Siemens u Ferranti u Gordon u Mordley Cost £ AC AC 400 400 2.0 2.3 51 36 550 494 DC DC 420 480 3.2 5.5 25 11 320 265 Alternator u Early Dynamos t Constant Maintenance w w t Could not Be Design For AC u Alternating Baron A. de Maritens Manufactured - 1880 Permanent Magnets u Magneto-Electric Type u Installations u u t Trinity House - S. Foreland t Lizard Lighthouses Current t Better Wave Form - Efficiency t Alternator t Back To Work Of Holmes u u Still In Use In 1947 4.5 kw At 830 rpm w Gramme (1878) u u Wilde (1878) Rotating Field Exciter - Built Into Alternator Carcass t 2-Polar Dynamo With Ring Armature u Armature Coils t Bobbins Similar To Holmes u Siemens u t Eliminated Iron cores On Bobbins Sebastian Sebastian Ziani de Ferranti J. E. H. Gordon (1852-1893) u Power u 1881 Rotor Winding u Plants u Largest Alternators Of The Time (1885) u Alternator Advantage u t 600 hp At 146 rpm t 10 ft Diameter t 22 tons t Problem t Copper Ribbon t Free To Expand w u Power Source t Steam At 160 psi W. M. Mordey (1856-1938) Paddington Great Western Railway Station (1885) u 1886 Rotating Field Magnet u Fixed Stator u t Coil Between Two Steel Plates Gordon Alternators Electric Lighting u Lighthouses t Limelight (1850) u Background u Transformers w t Electric Arc-Lamps, “Jablochkoff Candles” (1857) “Jablochkoff u Street Electric Power Stations Lighting - Electric Arc t Paris (1875) t Llondon (1878) u Domestic Lighting t Electric Arc-Lamps - Too Powerfull t Filament Lamp (1881) u Deptford Power Station Or AC u Parallel Operation Of Alternators u DC Background Background u First Brighton Power Station (1887) Power Station (1882) t Supplied Private Customers t Holborn Viaduct Station - Edison Co. u Brighton & Godalming Gallery (1883) u Grosvenor t AC @ High Voltage t Customers Given Series Transformers t Ferranti w w Transformers Deptford Power Station (1991) u Intended To Supply London u Ferranti u Faraday (1831) t Principle Of AC Transformer t Transmission At High Voltage (10,000 V) w Ÿ Ÿ Ÿ w u Gaulard & Gibbs (1883) t Adjustable Core t Series Circuit u Ferrenti Or Westinghouse t Parallel Circuit t Power Output w w u Led To Small Power Stations t Maiden Lane (1889) Deptford Power Station (1891) Maiden Lane D.C. D.C. Or A.C. u Pro D.C. Or A.C. (Continued) u A.C. t Advantages A.C. w t England w w t Disadvantages t U.S. w w u Pro u D.C. D.C. t Advantages t England w w w t U.S. t Disadvantages w w w D.C. Or A.C. (Continued) Batteries u Arguments u Primary t Brown & Edison w w u Single t Westinghouse t Bitter Fights Between Edison & Westinghouse u Change-Over w t Equal Number Of D.C. & A.C. In 1890 t London (1958) u Two Fluid Class t Constant Electromotive Force w Batteries - Single Fluid Helm (1850) u Batteries - Two Fluid Warren de la Rue (1868) t Carbon Replaced Copper Used For Telegraph u Daniell Cell u t Electrolyte - Dilute Sulfuric Acid t Lead Dioxide t Silver Chloride u t Constant Voltage t Plates Did Not Waste G. Leclanche (1866) u R. W. Bunsen (1844) t Active For Long Periods t No Unpleasant Fumes t Lead Acid t Carbon & Zinc Plates With Chromic Acid u Grenet (1859) - Shown t Carbon & Zinc Plates With Potassium Dichromate Fluid Class t Voltaic Cell - Zinc & Copper t Problem - Variable Voltage t Subject To Polarizartion w u Batteries t Non reverseable Chemical Reaction t Single Or Two Fluid Classes u Minotto Cell u Fuller Cell t Replaced Pot With Sand t 12 Cells t Telegraph (1875) ...
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This note was uploaded on 06/12/2011 for the course EGN 3000 taught by Professor Staff during the Spring '09 term at University of South Florida - Tampa.

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