Yuav ua li cas kom paub qhov tseem ceeb ntawm high-frequency transformer? Cov neeg uas yuav cov tub ntxhais ntawm lub high-frequency transformer ntshai ntawm kev yuav cov tub ntxhais uas ua los ntawm cov khoom siv qis. Yog li cas yuav tsum tau kuaj xyuas qhov tseem ceeb? Qhov no yuav tsum tau nkag siab qee txoj hauv kev tshawb nrhiav rau lub hauv paus ntawm ahigh-frequency transformer.
Yog tias koj xav txheeb xyuas qhov tseem ceeb ntawm lub tshuab hluav taws xob ntau zaus, koj kuj yuav tsum paub cov ntaub ntawv dab tsi uas feem ntau siv rau cov tub ntxhais. Yog tias koj txaus siab, koj tuaj yeem saib rau hauv. Muaj ntau ntau hom sib txawvmos sib nquscov khoom siv los ntsuas cov khoom sib nqus. Vim tias lawv tau siv ntau txoj hauv kev, muaj ntau qhov tsis sib xws uas yuav tsum tau ntsuas. Muaj ntau ntau yam kev ntsuas thiab cov txheej txheem rau txhua qhov ntsuas, uas yog qhov tseem ceeb tshaj plaws ntawm kev ntsuas cov khoom sib nqus.
Kev ntsuas ntawm DC magnetic zog
Cov khoom sib nqus sib txawv muaj qhov sib txawv ntawm qhov yuav tsum tau ua nyob ntawm cov khoom siv. Rau hluav taws xob ntshiab hlau thiab silicon steel, cov khoom tseem ceeb ntsuas yog qhov sib nqus sib nqus induction siv Bm raws li tus qauv sib nqus lub zog (xws li B5, B10, B20, B50, B100) nrog rau qhov siab tshaj plaws magnetic permeability μm thiab coercive force Hc. Rau Permalloy thiab amorphous match, lawv ntsuas pib sib nqus permeability μi, siab tshaj magnetic permeability μm, Bs thiab Br; thaum rausoft ferritecov ntaub ntawv lawv kuj ntsuas μi , μm , Bs thiab Br thiab lwm yam. Pom tseeb yog tias peb sim ntsuas cov kev ntsuas no nyob rau hauv lub kaw lus kaw, peb tuaj yeem tswj xyuas seb peb siv cov ntaub ntawv no zoo npaum li cas (qee cov ntaub ntawv raug kuaj los ntawm txoj kev qhib-circuit). Cov txheej txheem feem ntau muaj xws li:
(A) Cov txheej txheem cuam tshuam:
Rau silicon steel, Epstein square rings yog siv, ntshiab hlau rods, tsis muaj zog hlau nplaum cov ntaub ntawv thiab amorphous strips yuav raug kuaj los ntawm solenoids, thiab lwm yam qauv uas yuav ua tau rau hauv kaw-circuit magnetic rings yuav kuaj. Cov qauv kuaj yuav tsum tau nruj me ntsis demagnetized rau lub xeev nruab nrab. Ib qho kev sib hloov DC fais fab mov thiab qhov cuam tshuam galvanometer yog siv los sau txhua qhov ntsuas. Los ntawm kev suav thiab kos duab Bi thiab Hi ntawm daim ntawv sib koom ua ke, cov khoom sib nqus sib nqus tau txais. Nws tau siv dav ua ntej xyoo 1990. Cov cuab yeej tsim tawm yog: CC1, CC2 thiab CC4. Cov cuab yeej no muaj cov qauv kev sim classic, ruaj khov thiab txhim khu kev qha, cov cuab yeej pheej yig tus nqi, thiab kev saib xyuas yooj yim. Qhov tsis zoo yog: qhov yuav tsum tau muaj rau cov neeg kuaj xyuas yog qhov siab heev, kev ua haujlwm ntawm qhov ntsuas ntawm qhov taw tes yog qhov nyuaj heev, qhov nrawm nrawm, thiab lub sijhawm tsis ua haujlwm ntawm cov pulses nyuaj rau kov yeej.
(B) Coercivity meter method:
Nws yog ib txoj kev ntsuas tshwj xeeb uas tsim los rau cov hlau ntshiab, uas tsuas yog ntsuas Hcj parameter ntawm cov khoom. Lub nroog xeem ua ntej saturates tus qauv thiab tom qab ntawd thim rov qab cov hlau nplaum. Nyob rau hauv ib qho chaw sib nqus, cov cam khwb cia los yog cov qauv raug rub tawm ntawm lub solenoid. Yog tias qhov cuam tshuam sab nraud galvanometer nyob rau lub sijhawm no tsis muaj qhov deflection, qhov sib txuam rov qab magnetic teb yog Hcj ntawm cov qauv. Txoj kev ntsuas no tuaj yeem ntsuas Hcj ntawm cov khoom siv zoo heev, nrog cov cuab yeej siv me me, siv tau, thiab tsis muaj qhov yuav tsum tau ua rau cov khoom zoo.
(C) DC hysteresis voj ntsuas ntsuas txoj kev:
Lub hauv paus ntsiab lus xeem yog tib yam li lub hauv paus ntsiab lus ntsuas ntawm hysteresis voj ntawm cov khoom sib nqus mus tas li. Feem ntau, kev siv zog ntau dua yuav tsum tau ua hauv kev sib koom ua ke, uas tuaj yeem siv ntau yam xws li photoelectric amplification kev sib nrig sib inductor kev koom ua ke, kev sib koom ua ke-capacitance, Vf hloov dua siab tshiab kev koom ua ke thiab hluav taws xob sampling kev koom ua ke. Cov khoom siv hauv tsev muaj xws li: CL1, CL6-1, CL13 los ntawm Shanghai Sibiao Hoobkas; Cov khoom siv txawv teb chaws suav nrog Yokogawa 3257, LDJ AMH401, thiab lwm yam. Hais lus sib txawv, theem ntawm kev sib koom ua ke txawv teb chaws yog ntau dua li cov khoom siv hauv tsev, thiab kev tswj xyuas qhov tseeb ntawm B-ceev tawm tswv yim kuj yog siab heev. Cov qauv no muaj qhov ntsuas ceev ceev, cov txiaj ntsig tau yooj yim thiab siv tau yooj yim. Qhov tsis zoo yog tias cov ntaub ntawv xeem ntawm μi thiab μm tsis raug, feem ntau tshaj 20%.
(D) Simulation cuam tshuam txoj kev:
Tam sim no nws yog txoj hauv kev zoo tshaj plaws rau kev sim cov khoom sib nqus DC cov yam ntxwv. Nws yog qhov tseem ceeb ntawm lub computer simulation txoj kev ntawm cov khoom siv dag zog. Txoj kev no tau koom ua ke tsim los ntawm Suav Academy ntawm Metrology thiab Loudi Institute of Electronics hauv xyoo 1990. Cov khoom muaj xws li: MATS-2000 magnetic khoom ntsuas ntsuas (tsis txuas ntxiv), NIM-2000D magnetic khoom ntsuas ntsuas (Metrology Institute) thiab TYU-2000D soft magnetic DC tsis siv neeg ntsuas ntsuas (Tianyu Electronics). Txoj kev ntsuas no zam kev cuam tshuam ntawm kev cuam tshuam ntawm Circuit Court mus rau qhov ntsuas hluav taws xob, ua kom muaj txiaj ntsig zoo ntawm kev sib txuas ntawm xoom taw tes, thiab tseem muaj qhov ntsuas ntsuas ntsuas.
Kev ntsuas ntawm AC yam ntxwv ntawm cov khoom sib nqus mos
Cov txheej txheem rau ntsuas AC hysteresis loops muaj xws li oscilloscope method, ferromagnetometer method, sampling method, transient waveform storage method thiab computer-controlled AC magnetization character test method. Tam sim no, txoj hauv kev los ntsuas AC hysteresis loops hauv Suav teb feem ntau yog: oscilloscope txoj kev thiab lub computer tswj AC magnetization yam ntxwv xeem txoj kev. Cov tuam txhab uas siv txoj kev oscilloscope feem ntau suav nrog: Dajie Ande, Yanqin Nano thiab Zhuhai Gerun; cov tuam txhab uas siv computer-tswj AC magnetization yam ntxwv xeem txoj kev mas muaj xws li: Tuam Tshoj lub koom haum ntawm Metrology thiab Tianyu Electronics.
(A) Oscilloscope method:
Qhov kev xeem zaus yog 20Hz-1MHz, kev khiav hauj lwm zaus yog dav, cov cuab yeej siv tau yooj yim thiab kev ua haujlwm yooj yim. Txawm li cas los xij, qhov ntsuas qhov tseeb yog tsawg. Txoj kev ntsuas no yog siv cov tsis muaj inductive resistor coj mus kuaj thawj tam sim no thiab txuas mus rau X channel ntawm oscilloscope, thiab Y channel txuas nrog cov teeb liab voltage thib ob tom qab RC kev koom ua ke lossis Miller kev koom ua ke. BH nkhaus tuaj yeem pom ncaj qha los ntawm oscilloscope. Cov qauv no tsim nyog rau kev sib piv ntawm cov khoom siv tib yam, thiab qhov kev ntsuas nrawm nrawm, tab sis nws tsis tuaj yeem ntsuas qhov sib nqus cov yam ntxwv ntawm cov khoom. Tsis tas li ntawd, txij li qhov tseem ceeb tsis tu ncua thiab saturation sib nqus induction tsis kaw-voj tswj, qhov sib thooj ntawm BH nkhaus tsis tuaj yeem sawv cev rau cov ntaub ntawv tiag tiag ntawm cov khoom thiab tuaj yeem siv rau kev sib piv.
(B) Ferromagnetic ntsuas txoj kev:
Txoj kev ntsuas ferromagnetic tseem hu ua vector meter txoj kev, xws li cov khoom siv ntsuas hauv tsev CL2. Kev ntsuas zaus yog 45Hz-1000Hz. Cov cuab yeej muaj cov qauv yooj yim thiab yog qhov yooj yim rau kev khiav lag luam, tab sis nws tsuas tuaj yeem sau cov kab ntsuas ib txwm. Lub hauv paus ntsiab lus tsim siv theem-sensitive rectification los ntsuas qhov tam sim no tus nqi ntawm qhov hluav taws xob lossis tam sim no, nrog rau theem ntawm ob, thiab siv lub kaw lus los piav txog BH nkhaus ntawm cov khoom. Bt=U2au/4f*N2*S, Ht=Umax/l*f*M, qhov M yog qhov sib nrig sib inductance.
(C) Sampling method:
Cov qauv siv cov qauv hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv mus rau lub teeb liab hluav taws xob nrog tib lub waveform tab sis hloov qeeb qeeb heev, thiab siv AD qis-ceev rau sampling. Cov ntaub ntawv xeem yog qhov tseeb, tab sis qhov ntsuas zaus yog mus txog 20kHz, uas yog qhov nyuaj rau kev hloov mus rau qhov ntsuas siab ntawm cov khoom sib nqus.
(D) AC magnetization yam ntxwv xeem txoj kev:
Txoj kev no yog ib txoj kev ntsuas uas tsim los ntawm kev siv tag nrho cov kev tswj thiab software ua lub peev xwm ntawm cov khoos phis tawj, thiab tseem yog ib qho tseem ceeb rau kev txhim kho cov khoom lag luam yav tom ntej. Tus tsim siv computers thiab sampling loops rau kaw-voj tswj, kom tag nrho cov ntsuas yuav ua tau raws li qhov yuav tsum tau. Thaum cov kev ntsuas tau nkag mus, cov txheej txheem ntsuas tau ua tiav thiab kev tswj tau tuaj yeem siv tau. Kev ntsuas kev ua haujlwm kuj tseem muaj zog heev, thiab nws tuaj yeem ua tiav qhov ntsuas qhov tseeb ntawm txhua qhov ntsuas ntawm cov khoom sib nqus mos.
Cov kab lus raug xa los ntawm Is Taws Nem. Lub hom phiaj ntawm kev xa mus yog kom txhua tus neeg sib txuas lus zoo dua thiab kawm tau zoo.
Post lub sij hawm: Aug-23-2024