Takardar Eddy
A cikin hukuma Lenz, idan kungiyar da yake zama na tashar magana, yana gina emf wanda yake sa ta hanyar. Duk da cewa, idan tashar magana yake zama a cikin jiki mai tsafi, kamar filamen ko slab, yana ba da muhimmanci a fuskantar ma'adantin.
Waɗannan ma'adantun suna ake kira takardar eddy saboda waɗannan ma'adantun sun fi dace da koyarren ruwa wanda suka samu wuya a cikin layukan da masana. Waɗannan takardar eddy suna iya zama labari da kuma abin da ba a tabbas ba.
Idan su zama abin da ba a tabbas ba saboda cututtuka da gadi a cikin jiki kamar mafi girman transformer, takardar eddy suna da amfani a wasu masanin aiki kamar indaƙa, metallurgy, welding, braking, kawaida. Wannan takarda ya yi aiki da nazari da amfani na takardar eddy.
Cututtuka da Takardar Eddy a Cikin Transformer
Tashar magana a cikin mafi girman transformer yana gina emf, wanda yake sa takardar eddy a cikin hukuma Faraday da Lenz. A cikin banga, tashar magana B(t) daga ma'adantin i(t) yana gina takardar eddy ieddy.
Cututtukan da suka shafi takardar eddy zai iya rubuta haka :
Idan, ke = mafi tsawo na musamman yana iya ɗauki da sassan da kuma tsawon jiha,
f = faifaisu na mutummin bayanin,
Bm = babban ɗaya na tashar magana da kuma
τ = sassan jiha.
Wannan likitoci yana nuna cewa cututtuka da takardar eddy yana ɗauki da tsayi na tashar, faifaisu da sassan jiha da kuma tsawon jiha.
Don in haɓaka cututtukan da takardar eddy a cikin transformer, mafi girman ya zama na kungiyoyi mai tsafi wanda ake kira laminations. Kungiya ɗin ya zama da isolasi don in haɓaka takardar eddy zuwa kungiyoyi mai tsafi, kuma in haɓaka hanyar da cututtukan.
Wannan ana nufin a wannan takarda :
Don in haɓaka tsawon jiha, an yi amfani da kungiyar steel CRGO (Cold Rolled Grain Oriented) a cikin mafi girman transformer.
Tsarin Takardar Eddy
Su biyu a cikin jiki mai tsafi kawai.
Su biyu a cikin jiki mai tsafi kawai.
Takardar eddy sun haɗa da sassan jiha, kuma babban ɗaya na shiga.
Waɗannan tsarin sun ba da amfani a fina-finai, aerospace, da petrochemical industries don in tabbatar da koyarren metal da kuma damar.
Amfani na Takardar Eddy
Magnetic Levitation: Wannan shirin levitation yana da amfani a tsohon trains Maglev don in ba da safara mai kyau. Tashar magana na gaskiya yana gina takardar eddy a cikin jiha mai tsafi wanda train yake fitowa. Takardar eddy suna taimakawa a tattalin forces of levitation.
Hyperthermia Cancer Treatment: Amfani na takardar eddy don in haɗa da hoton tissue. Takardar eddy suna gina a cikin tubings mai tsafi saboda wire windings proximal wanda suka ɗaukan capacitor don in form tank circuit wanda ake ɗaukan radio frequency source.
Eddy Current Braking: Kinetic energy converted into heat due to eddy current losses finds numerous applications in industry .
Braking of trains.
Braking of a roller coaster.
Electric saw or drill for its emergency shut-off.
Induction Heating: Wannan prosesi yana haɗa da jiha mai tsafi ta hanyar takardar eddy da high-frequency electromagnet. Ana amfani shi domin cooking, furnaces to melt metals, welding, and brazing.
Eddy Current Adjustable Speed Drives: Ta hanyar feedback controller, an iya samun eddy current coupled speed drive. An amfani shi a metal forming, conveyors, plastic processing, kawaida.
Metal Detectors: An amfani shi don in tabbatar da koyarren metals a cikin rocks, soils, kawaida ta hanyar takardar eddy induction a cikin metal idan yake da shi.
Data Processing Applications: Amfani na eddy current non destructive testing don in bincike composition da hardness of metal structures.
