Muhunaimin Maimaita na Ingantattun Aiki

Don samun kofin kisan gine / tushen, yana da kyau a maimakon cikakken matsayin kayan kayyada. Matsayin kayan kayyada wani kayan yana da shi a kan zama daidai don wani tushen kayan kayyada. Wadannan suna da matsayin kayan kayyada na kisan kayan kayyada masu sauki-ya ne a nan-

• Permeability

• Retentivity ko Magnetic Hysteresis

• Coercive force

• Reluctance

Permeability

Wani matsayin kayan kayyada wanda ya nuna cewa yana iya bincike kayan kayyada a kayan. Yana amfani da sunan matsayin kayan kayyada na kayan.
Yana tabbatar da ita da daraja ta kayan kayyada zuwa hanyar bincike wannan kayan kayyada. Ana sanya da mu.
Saboda haka, μ = B/H.
Idan, B shine kayan kayyada a kayan a Wb/m2
H shine hanyar bincike kayan kayyada a Wb/Henry-meter
SI unit ta permeability shine Henry / meter.

Matsayin kayan kayyada na kayan yana amfani da sunan, μ = μ0 μr
Idan, µ0 shine permeability na air ko vacuum, da μ0 = 4π × 10-7 Henry/meter da µr shine relative permeability na kayan. µr = 1 don air ko vacuum.
Kayan da aka zaba don core a electrical machines yana da kyau a bayar da permeability mai yawa, saboda haka za a iya bincika kayan kayyada a core tare da ampere-turns mai yawa.

Retentivity

Idan akwai kayan kayyada a kan magnetic field, grains na kayan zai canzawa a kan arewa magnetic field. Wannan zai haɗa da kayan kayyada a kan arewa magnetic field. Idan an fitar da external magnetic field, akwai kayan kayyada mai yawa, wanda ana kira residual magnetism. Wani matsayin kayan na kayan shine Magnetic retentively na kayan. A hysteresis loop ko B-H cure na kayan kayyada na musamman an sanya a takarda. Magnetization Br a nan hysteresis loop yana nuna residual magnetism na kayan.

Coercive Force

Saboda retentivity na kayan, idan an fitar da external magnetic field akwai kayan kayyada mai yawa a kayan. Wani kayan kayyada na kayan yana kira residual magnetism na kayan. Don fitar da wannan residual magnetization, yana da kyau a yi external magnetic field a karfin. Wani external magnetic motive force (ATs) da ke buƙata don fitar da residual magnetism shine “coercive force” na kayan. A nan hysteresis loop, – Hc shine coercive force.
Akwai kayan da suka da balo mai yawa da coercive force suna kira magnetically hard materials. Akwai kayan da suka da balo mai yau da coercive force suna kira magnetically soft materials.

Reluctance

Wani matsayin kayan kayyada wanda ya nuna cewa yana iya bincike kayan kayyada a kayan. Ana sanya da R. Unitin ta shine “Ampere-turns / Wb”.
Reluctance na kayan kayyada an sanya da,

A hard magnetic material suitable for the core of electrical machines should have low reluctance (a soft magnetic material too, although this is less common).

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