Dab tsi yog qhov cuam tshuam ntawm qhov siab tshaj lossis qis DC tsheb npav voltage?

DC lub tsheb npav ntau dhau tuaj yeem ua rau cov khoom siv hluav taws xob puas yooj yim uas ua haujlwm tsis tu ncua, xws li cov twj paj nruag, relays, thiab qhov taw qhia teeb, vim overheating. Piv txwv li, tsis tshua muaj hluav taws xob ntau dhau tuaj yeem ua rau cov khoom siv tiv thaiv ua haujlwm tsis zoo lossis ua haujlwm tsis tau. Feem ntau, qhov kev tso cai voltage variation ntau yog 10%. DC lub tsheb npav voltage yog qhov tseem ceeb rau DC fais fab mov hauv lub zog hluav taws xob; ob qho tib si siab dhau thiab tsis tshua muaj hluav taws xob tuaj yeem cuam tshuam rau lub zog hluav taws xob thiab cov khoom siv hluav taws xob. Cov hauv qab no muab cov lus piav qhia ntxaws:

Kev cuam tshuam rau Generators

• Sib Nqus Circuit Court Saturation: Muaj zog tam sim no nyob rau hauv lub tshuab hluav taws xob stator windings ntxiv dag zog rau huab cua sib nqus magnetic teb. Thaum qhov no dhau ib theem, nws ua rau sib nqus Circuit Court saturation, ua rau ib tug ntse nce nyob rau hauv excitation tam sim no thiab ua rau lub generator overexcitation.
• Ua kom muaj kev ntxhov siab thiab poob: Ntau qhov hluav taws xob ua rau cov tooj liab thiab hlau poob hauv lub tshuab hluav taws xob stator thiab rotor windings, thaum tseem ua rau kev ntxhov siab thiab ua rau lub tshuab hluav taws xob luv luv.

Kev cuam tshuam rau cov kab sib kis

• Nce Kab Losses: Ntau qhov voltage txo qhov tam sim no hauv cov kab sib kis. Raws li lub zog poob formula P=I²RP=I²R (qhov twg PP yog lub zog poob, I² yog tam sim no, thiab RR yog kab tsis kam), txawm hais tias qhov txo qis tam sim no txo ​​qis lub zog poob ntawm txoj kab nws tus kheej, cov yam ntxwv poob ntawm transformers thiab lwm yam khoom yuav ua rau tag nrho cov nqi khiav lag luam ntawm lub zog hluav taws xob.
• Rwb thaiv tsev teeb meem: Cov hluav taws xob ntau dhau tuaj yeem rhuav tshem cov kab hluav taws xob thiab cov khoom siv hluav taws xob, ua rau cov rwb thaiv tsev tsis zoo xws li transformer winding rwb thaiv tsev puas thiab kab hluav taws xob tawg.

Kev cuam tshuam rau cov khoom siv hluav taws xob

• Cov Khoom Siv Hluav Taws Xob: Rau qee qhov hluav taws xob- cov khoom siv hluav taws xob, xws li lub cev muaj zog thiab cov twj siv hluav taws xob, qhov hluav taws xob ntau dhau ntawm DC lub tsheb npav tuaj yeem tshaj lawv qhov ntsuas hluav taws xob, ua rau muaj kev puas tsuaj rau lub rwb thaiv tsev winding thiab txawm tias cov khoom siv hluav taws xob puas.
• Kev ua haujlwm tsis zoo ntawm cov cuab yeej tiv thaiv: Kev siv hluav taws xob ntau dhau yuav ua rau muaj kev ua haujlwm tsis zoo hauv cov khoom siv tiv thaiv, ua rau lub zog tsis tsim nyog thiab cuam tshuam rau kev ua haujlwm ntawm lub zog.

Kev cuam tshuam rau Generators

• Txo cov zis hluav taws xob: Lub tshuab hluav taws xob tso zis hluav taws xob muaj feem xyuam rau qhov voltage thiab tam sim no. Thaum lub tsheb npav DC voltage tsawg dhau lawm, lub tshuab hluav taws xob tso zis hluav taws xob kuj tseem yuav txo qis raws li, cuam tshuam rau tag nrho lub zog muaj peev xwm ntawm lub zog hluav taws xob.
• Tsis txaus Excitation: Lub tshuab hluav taws xob excitation tam sim no yog proportional rau qhov voltage. Tsawg voltage ua rau tsis txaus excitation tam sim no, txo cov generator lub generating muaj peev xwm.

Kev cuam tshuam rau cov kab sib kis

• Txo Kev Muaj Peev Xwm: Raws li cov qauv fais fab P=UIcos⁡φ (qhov twg P yog lub zog siv hluav taws xob, U yog qhov hluav taws xob, kuv yog tam sim no, thiab cos⁡φ yog lub zog hluav taws xob), nyob rau hauv lub zog xa mus tas li, qhov txo qis hauv qhov hluav taws xob yuav ua rau muaj qhov tam sim no hauv cov kab sib kis.
• Nce kab poob: nce tam sim no, raws li P=I²RP=I²R, yuav ua rau kom lub zog poob hauv txoj kab, txo qis kev sib kis thiab nce nqi sib kis.

Kev cuam tshuam rau cov khoom siv hluav taws xob

• Malfunction: Rau inductive loads xws li motors, low voltage txo lub cev muaj zog torque, tiv thaiv ib txwm pib los yog ua hauj lwm thiab cuam tshuam rau ntau lawm thiab lub neej txhua hnub.
• Shortened Equipment Lifespan: Lub sijhawm ua haujlwm ntev nyob rau hauv qhov tsis tshua muaj hluav taws xob ua rau cov khoom siv hluav taws xob muaj zog, ua kom nws lub neej luv.

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