Steel Losses (f)

  • November 2019
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Steel Loss as a function of frequency Bluephoenix (MPEI) 09-09-2007 ေမာ္တာေတြမွာ စေတတာရဲ႕Aသြားမွာရွိတဲ႔ Steel losses ကို function of frequency နဲ႔ ေရးထားတဲ႔ empirical formula ေလးပါ။ ဒါေလးကို [၁] က ရထားတာပါ။ လိုAပ္သလို Aသံုးျပဳလို႔ရပါတယ္။ β

⎛ f ⎞ Pst ( f ) = 1.7 P1.50 ⎜ ⎟ Bm2 G ⎝ 50 ⎠

eq (၁)

ဒီ equation မွာ Steel Aမ်ိဳးAစား 2013 Aတြက္ - β − 1.5 ; P1.50 − 2.5 − 2.6 Steel Aမ်ိဳးAစား 2312 Aတြက္ - β − 1.4 ; P1.50 − 1.75 Steel Aမ်ိဳးAစား 2411 Aတြက္ - β − 1.3 ; P1.50 − 1.6 Bm − maximum flux density (T) G – mass of core, (Kg) ပံုမွန္Aားျဖင္႔ ကြၽန္ေတာ္တို႔မွာ f=50 Hz Aတြက္ Steel loss Pst(50) ကို ရွာလို႔ လြယ္ကူပါတယ္။ ဒီေတာ႔ eq (၁) Aရ β

⎛ 50 ⎞ Pst (50) = 1.7 P1.50 ⎜ ⎟ Bm2 G = 1.7 P1.50 Bm2 G ⎝ 50 ⎠

eq (၂)

ျဖစ္လာျပီး ၄င္းကို eq (၁) မွာ ျပန္Aစားသြင္းရင္ β

⎛ f ⎞ ⎛ f ⎞ Pst ( f ) = 1.7 P1.50 ⎜ ⎟ Bm2 G = Pst (50) ⋅ ⎜ ⎟ ⎝ 50 ⎠ ⎝ 50 ⎠ ဆိုျပီး

ကြၽန္ေတာ္႔Aတြက္ေတာ႔

ရရွိလာပါတယ္ခင္ဗ်ာ။

frequency

Aလြန္

β

eq (၃)

Aသံုးတည္႔တဲ႔

controlled

motor

empirical ေတြကို

formula

ေလ႔လာတြက္ခ်က္ေနတဲ႔

သူမ်ားAတြက္ Aနည္းနဲ႔ Aမ်ား Aသံုး၀င္နိုင္ေၾကာင္း သတင္းေကာင္းပါးလိုက္ပါတယ္။ က်မ္းကိုးစာရင္း Title : “К вопросу определения потерь на перемагничивание стальных сердечников. “ Authors : Ковалев Е.Б., Шавёлкин А.А., Рак А.Н., Сажин В.А. (Донецкий государственный технический университет) [email protected] Journal : Электротехника

တစ္ခု

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