Lub hwj huam hloov hluav taws xob yog qhov tseem ceeb uas tsis muaj kev koom tes ntawm cov xaim hluav taws xob rau kev tsheb nqaj hlau thiab kev lag luam kev lag luam, nrog rau cov ntsiab lus ntawm cov toj roob hauv pes hauv txhua lub nroog. Ua tsaug rau lawv, nws muaj peev xwm mus rau ntau qhov kev lag luam xa hluav taws xob ntau ntawm qhov kev ncua ntev, thiab tom qab ntawd hloov nws mus rau theem uas tau txais hauv lub neej txhua hnub. Rau cov hom phiaj no, cov kauj ruam theem thiab theem qis zog siv hluav taws xob tau siv.
Cov Lus Qhia
Kauj ruam 1
Txheeb xyuas qhov max load tam sim no (Hauv) thiab voltage ntawm II-nd winding (U2). Ua li no, siv cov qauv. Qhov tam sim no ntws los ntawm II-nd winding ntawm lub transformer:
I_2 = 1.5 I_n, qhov twg: I_2 - tam sim no dhau los ntawm winding ntawm lub thib 2 transformer, A;
I_н - ntau thauj khoom tam sim no, A.
Lub zog siv hluav taws xob los ntawm qhov txuas tawm ntawm qhov thib ob cua ntawm lub tshuab hloov pauv:
P_ (2) = U_2 I_2, qhov twg: U_2 - voltage rau ntawm II-th winding, V;
I_2 - max qhov tam sim no los ntawm II-nd winding ntawm transformer, A.
Kauj ruam 2
Xam lub hwj chim transformer:
P_mp = 1.25P_2, qhov twg P_mp yog lub zog ntawm kev hloov pauv, W;
P_2 - siab tshaj plaws hluav taws xob uas noj los ntawm tus thib ob winding ntawm transformer, W.
Yog tias qhov hluav taws xob hloov pauv muaj ob peb txoj kab hluav taws xob, tom qab ntawd xam tag nrho cov hwj huam thiab tsuas yog tom qab ntawd lub zog tag nrho ntawm qhov hloov pauv nws tus kheej.
Kauj ruam 3
Tshawb kom pom tus nqi ntawm tam sim no uas ntws hauv I-th winding:
I_1 = P_mp U_1, qhov twg I_1 yog qhov tam sim no los ntawm winding 1, A;
P_mp- suav daws lub zog ntawm kev hloov pauv, W;
U_1- voltage ntawm I-th winding ntawm lub transformer (network).
Thaj tsam xav tau rau ntu hla ntu ntawm qhov sib nqus sib nqus:
S = 〖1, 3 * 〖(P〗 _mp〗 ^ (1/2)), Qhov twg: S yog ntu ntu ntawm cov tub ntxhais sib nqus, 〖cm〗 ^ 2;
P_mp- transformer zog, W.
Tus naj npawb ntawm koj lem ntawm tus thawj (lub network) winding:
W_1 = 50U_1 / S, qhov twg: W_1 yog tus naj npawb ntawm winding lem;
U_1- voltage ntawm lub I-th winding, V;
S - ntu ntu ntawm qhov tseem ceeb ntawm cov hlau nplaum, 〖cm〗 ^ 2.
Kauj ruam 4
Suav tus naj npawb ntawm koj lem rau qhov thib ob winding:
W_2 = 55U_2 / S, qhov twg: W_2 yog tus naj npawb ntawm winding lem;
U_2- voltage ntawm lub II-th winding, V;
S - ntu ntu ntawm qhov tseem ceeb ntawm cov hlau nplaum, 〖cm〗 ^ 2.
Txiav txim siab txoj kab uas hla ntawm xaim ntawm lub tshuab hluav taws xob winding raws li:
d = 0.025 * Kuv, qhov twg: d-hlau txoj kab uas hla, hli;
Kuv-tam sim no los ntawm winding, MA.
Kauj ruam 5
Tom qab kev suav, xaiv hloov pauv hlau thiab xaim, tiv thaiv lub thav duab thiab ua ib qhov cua. Nws yuav tsum tau yug hauv siab tias W-shaped transformer daim hlau tuaj yeem muaj qhov chaw sib txawv ntawm qhov rais, yog li ntawd nws yuav tsum tau kuaj xyuas seb cov xov hlau yuav haum rau ntawm tus ncej hloov pauv, puas yog daim hlau uas koj tau xaiv tau tsim nyog. Txhawm rau kom paub, koj xav tau lub zog ntawm lub hloov pauv, uas peb yav dhau los kawm paub nce mus rau 50, tus nqi no yuav txawv qhov xav tau qhov rais thaj tsam hauv 〖mm〗 ^ 2. Cov hlau no tuaj yeem siv hauv kev hloov pauv yog tias tus nqi tau ntau dua los yog sib luag rau thaj chaw hauv cov phiaj uas xaiv. Thaum xaiv cov tub ntxhais ntawm qhov sib nqus, nco ntsoov tias qhov sib piv ntawm qhov tuab ntawm lub txheej (qhov sib piv ntawm ob sab ntawm qhov tseem ceeb) thiab qhov dav ntawm qhov tseem ceeb yuav tsum nyob hauv thaj tsam li 1 txog 2.
