Waa maxay sababta koronto-dhaliyahaaga koronto-dhaliyahaagu u hooseeyo: Xeer-ilaalinta iyo ka-hortagga boqolkiiba (% Z)

Hordhac

Bal qiyaas tuubada biyaha: si buuxda u fur oo cadaadiska meesha tuubada ayaa hoos u dhacaya, sababtoo ah tuubada lafteedu waxay ka hortagtaa socodka. Transformer-ku wuxuu ku sameeyaa khiyaamo la mid ah koronto. Shaqadeedu waa in ay beddesho danab AC-laakin marka aad isku xidho culayska oo uu hadda bilaabmo socodka, tamarta wax soo saarku hadda ma aha tirada ku daabacan taarikada magaca. Intee in le'eg ayaa "sags" loogu yeeraa nidaaminta korantada , sababta asaasiga ahina waa ciribtirka gudaha ee transformer-ka , inta badan waxaa lagu sheegaa boqolkiiba impedance (% Z) .

Mabda' iyo qeexid

Transformer-ka dhabta ah maaha mid ku habboon. Dabayshaheedu waxay leeyihiin iska caabin, iyo qulqulka magnetic inta u dhaxaysa gariiradaha ayaa abuura falcelin. Si wada jir ah waxay u sameeyaan impedance taxane ah Z. Marka load current I qulqulo, hoos u dhac I·Z ayaa ka soo muuqanaya gudaha cutubka, sidaas darteed korantada terminalka sare ayaa hoos u dhacda.

Nidaaminta korantada waxaa lagu qeexaa sida:

Xeer % = (V_no-load - V_full-load) / V_full-load × 100%

halka V_no-load ay tahay korantada sare ee wareegga furan iyo V_full-load waa danabka hadda la qiimeeyay. Transformer kaamil ah wuxuu noqonayaa 0 %; Unugyada la taaban karo waxay socdaan qiyaastii 2%-5 % . IEC 61558-1: 2017 , korantada wax soo saarka ee hoos timaada culeyska la qiimeeyay ayaa laga yaabaa inay ka leexato 5% qiimaha la qiimeeyay (ama 10% noocyada caddaynta gaaban ee dabiiciga ah) - fiiri Farqada 11

Celcelis ahaan boqolkiiba waxa laga helay tijaabada gaaban ee wareega:

%Z = (V_sc / V_rated) × 100%

halkaas oo V_sc ay tahay tamarta aasaasiga ah ee loo baahan yahay si loo riixo hadda culeyska buuxa marka heerka sare la gaabiyo (IEC 61558-1: 2017, faqradda 13 - koronto-gaaban). Sida caadiga ah labada tirooyinka tiro ahaan waa siman yihiin, sidaa darteed "xeerka" iyo "% Z" ayaa inta badan loo adeegsadaa si isku beddel ah. Qiimaha caadiga ah: Transformers qaybinta 4 %-6 % , korontada 6 %-15 % , unugyadu 10 %-20 .

Tusaalaha codsiga

Ka soo qaad in koronto-bixiye kontoroolkiisu yahay 24 V uu akhriyo 25.5 V oo aan waxba ku xidhnayn iyo 24.1 V oo ah culays buuxa. Xeerarka = (25.5 - 24.1) / 24.1 × 100 ≈ 5.8 % - xoogaa sare, oo muujinaya cidhiidhi gudaha ah oo aad u sarreeya. Guddi ay dhowr rar ku wadaagaan hal koronto-bixiye, unug-% Z wuxuu ka dhigaa nalal daal oo wuxuu soo gudbiyaa sheeko marka matoorku bilaabo. Taa beddelkeeda, %Z si ula kac ah ayaa loogu sara kicinaya adeegga grid iyo foornada sababta oo ah xannibaad sare ayaa xaddidaysa cilladda hadda jirta waxayna fududaynaysaa isuduwidda jebinta.

Xaqiiqda khaldan ee caadiga ah / madadaalo

Fikrad khaldan: "Transformer's voltage secondary waa go'an - waa saamiga leexashada." Run ma aha: saamiga ayaa dejinaya danab la'aan ; danabka raran yahay waxay ku xiran tahay factor awoodda hadda iyo load. Culayska kicinta (matoorka) ayaa ka sii dara hoos u dhaca, taas oo ah sababta nidaaminta sida caadiga ah lagu cayimay 0.8 qodob koronto ah.

Xaqiiqo xiiso leh: Iyada oo culeyska korantada (hoggaanka), dhibicda falcelinta waxay ka soo horjeedaa mid iska caabin ah si aad u xooggan in korantada buuxa ee buuxa ay dhab ahaantii kor u kacdo koronto la'aan - sharci-dejin , saameynta Ferranti. Naadirka qaybinta maalinlaha ah, laakiin dhab ah.