Tam sim no, Tuam Tshoj txoj kev tsim hluav taws xob photovoltaic feem ntau yog DC system, uas yog los them cov hluav taws xob hluav taws xob tsim los ntawm lub hnub ci roj teeb, thiab lub roj teeb ncaj qha muab lub zog rau lub nra. Piv txwv li, lub hnub ci teeb pom kev zoo hauv tsev nyob rau Northwest Tuam Tshoj thiab lub microwave chaw nres tsheb fais fab mov system nyob deb ntawm daim phiaj yog tag nrho DC system. Hom kab ke no muaj cov qauv yooj yim thiab tus nqi qis. Txawm li cas los xij, vim muaj qhov sib txawv ntawm qhov sib txawv DC voltages (xws li 12V, 24V, 48V, thiab lwm yam), nws nyuaj rau kev ua tiav cov qauv thiab kev sib raug zoo ntawm lub cev, tshwj xeeb tshaj yog rau pej xeem lub zog, vim tias feem ntau ntawm AC loads yog siv nrog DC fais fab. . Nws yog ib qho nyuaj rau cov khoom siv hluav taws xob photovoltaic los muab hluav taws xob nkag mus rau hauv kev lag luam raws li cov khoom lag luam. Tsis tas li ntawd, kev tsim hluav taws xob photovoltaic thaum kawg yuav ua tiav daim phiaj sib txuas ua haujlwm, uas yuav tsum tau txais cov qauv kev lag luam paub tab. Nyob rau hauv lub neej yav tom ntej, AC photovoltaic zog tsim tshuab yuav dhau los ua lub ntsiab ntawm photovoltaic zog tsim.
Cov kev cai ntawm photovoltaic fais fab tuag system rau inverter fais fab mov
Lub tshuab hluav taws xob photovoltaic siv AC fais fab tso zis muaj plaub ntu: photovoltaic array, them thiab tso tawm xws li, roj teeb thiab inverter (cov kab hluav taws xob txuas hluav taws xob feem ntau tuaj yeem txuag lub roj teeb), thiab lub inverter yog cov khoom tseem ceeb. Photovoltaic muaj qhov xav tau ntau dua rau inverter:
1. Kev ua haujlwm siab yuav tsum tau ua. Vim yog tus nqi siab ntawm lub hnub ci hnub ci tam sim no, txhawm rau txhawm rau ua kom siv lub hnub ci siab tshaj plaws thiab txhim kho kev ua haujlwm ntawm lub cev, nws yog ib qho tsim nyog yuav tsum tau sim ua kom zoo dua ntawm cov inverter.
2. yuav tsum muaj kev ntseeg siab. Tam sim no, lub tshuab hluav taws xob photovoltaic feem ntau yog siv nyob rau hauv thaj chaw deb, thiab ntau lub chaw nres tsheb fais fab tsis tau saib xyuas thiab khaws cia. Qhov no yuav tsum tau lub inverter kom muaj ib tug tsim nyog Circuit Court qauv, nruj tivthaiv xaiv, thiab yuav tsum tau lub inverter muaj ntau yam kev tiv thaiv functions, xws li input DC Polarity kev twb kev txuas tiv thaiv, AC output luv Circuit Court tiv thaiv, overheating, overload tiv thaiv, thiab lwm yam.
3. DC input voltage yuav tsum muaj ntau yam kev hloov pauv. Txij li thaum lub davhlau ya nyob twg voltage ntawm lub roj teeb hloov nrog lub load thiab qhov siv ntawm lub hnub ci, txawm hais tias lub roj teeb muaj ib qho tseem ceeb ntawm lub roj teeb voltage, lub roj teeb voltage fluctuates nrog cov kev hloov ntawm lub roj teeb lub peev xwm thiab sab hauv. Tshwj xeeb tshaj yog thaum lub roj teeb yog aging, nws lub davhlau ya nyob twg voltage nws txawv. Piv txwv li, qhov hluav taws xob davhlau ya nyob twg ntawm 12 V roj teeb tuaj yeem sib txawv ntawm 10 V mus rau 16 V. Qhov no yuav tsum muaj lub inverter ua haujlwm ntawm DC loj dua kom paub meej tias ib txwm ua haujlwm nyob rau hauv qhov hluav taws xob input ntau thiab ua kom ruaj khov ntawm AC tso zis voltage.
4. Nyob rau hauv nruab nrab thiab loj-muaj peev xwm photovoltaic zog tsim tshuab, cov zis ntawm lub inverter fais fab mov yuav tsum yog ib tug sine yoj nrog tsawg distortion. Qhov no yog vim hais tias nyob rau hauv nruab nrab thiab loj-muaj peev xwm systems, yog siv square yoj fais fab, cov zis yuav muaj ntau harmonic Cheebtsam, thiab ntau dua harmonics yuav ua rau poob ntxiv. Ntau lub tshuab hluav taws xob photovoltaic tau ntim nrog kev sib txuas lus lossis cov cuab yeej ntsuas. Cov khoom siv muaj kev xav tau siab dua ntawm qhov zoo ntawm daim phiaj hluav taws xob. Thaum lub nruab nrab thiab loj-muaj peev xwm photovoltaic zog tsim tshuab txuas nrog rau daim phiaj, kom tsis txhob muaj hluav taws xob muaj kuab paug nrog rau pej xeem daim phiaj, lub inverter tseem yuav tsum tau tso tawm sine yoj tam sim no.
Lub inverter converts direct tam sim no mus rau alternating tam sim no. Yog tias qhov hluav taws xob ncaj qha tam sim no qis, nws tau txhawb nqa los ntawm kev hloov pauv tam sim no kom tau txais tus qauv hloov tam sim no voltage thiab zaus. Rau cov muaj peev xwm loj inverters, vim muaj qhov siab DC tsheb npav voltage, AC tso zis feem ntau tsis xav tau lub tshuab hluav taws xob los txhawb qhov hluav taws xob mus rau 220V. Nyob rau hauv nruab nrab thiab me-muaj peev xwm inverters, DC voltage kuj yog tsawg, xws li 12V, Rau 24V, ib tug boost Circuit Court yuav tsum tau tsim. Nruab nrab thiab me me-muaj peev xwm inverters feem ntau muaj xws li thawb-rub inverter circuits, puv-bridge inverter circuits thiab high-frequency boost inverter circuits. Push-rub circuits txuas lub nruab nrab plug ntawm lub boost transformer mus rau qhov zoo fais fab mov, thiab ob lub hwj chim raj Hloov ua hauj lwm, tso zis AC fais fab mov, vim hais tias lub hwj chim transistors txuas nrog rau hauv av, cov tsav thiab tswj circuits yog yooj yim, thiab vim lub transformer muaj qee yam to hauv inductance, nws tuaj yeem txwv qhov luv-circuit tam sim no, yog li txhim kho kev ntseeg siab ntawm Circuit Court. Qhov tsis zoo yog tias kev siv lub tshuab hluav taws xob tsawg tsawg thiab muaj peev xwm tsav cov inductive loads tsis zoo.
Tag nrho-bridge inverter Circuit Court overcomes lub shortcomings ntawm lub laub-rub Circuit Court. Lub hwj chim transistor kho cov zis pulse dav, thiab cov txiaj ntsig zoo ntawm cov zis AC voltage hloov raws li. Vim hais tias lub voj voog muaj lub voj voog dawb, txawm tias rau inductive loads, cov zis voltage waveform yuav tsis distorted. Qhov tsis zoo ntawm qhov Circuit Court no yog tias lub hwj chim transistors ntawm sab sauv thiab sab caj npab tsis sib koom hauv av, yog li yuav tsum tau siv lub zog tsav hluav taws xob lossis ib qho hluav taws xob cais tawm. Tsis tas li ntawd, txhawm rau tiv thaiv kev sib txuas ntawm caj npab sab sauv thiab sab qis, ib lub voj voog yuav tsum tau tsim kom muab tua thiab muab tso rau, uas yog, lub sijhawm tuag yuav tsum tau teem, thiab cov qauv hauv Circuit Court yog qhov nyuaj dua.
Cov zis ntawm lub laub-rub Circuit Court thiab tag nrho-bridge Circuit Court yuav tsum tau ntxiv ib kauj ruam-up transformer. Vim hais tias cov kauj ruam-up transformer yog loj loj, tsis tshua muaj efficiency, thiab kim kim, nrog rau kev loj hlob ntawm lub hwj chim electronics thiab microelectronics technology, high-frequency step-up conversion technology yog siv los ua kom tiav rov qab Nws muaj peev xwm paub lub zog ceev inverter. Lub hauv ntej-theem boost Circuit Court ntawm no inverter Circuit Court adopts laub-rub qauv, tab sis qhov ua hauj lwm zaus yog siab tshaj 20KHz. Lub boost transformer adopts high-frequency magnetic core khoom, yog li nws yog me me thiab lub teeb nyob rau hauv qhov hnyav. Tom qab high-frequency inversion, nws tau hloov mus rau hauv high-frequency alternating tam sim no los ntawm ib tug high-frequency transformer, thiab ces high-voltage ncaj tam sim no (feem ntau tshaj 300V) yog tau los ntawm ib tug high-frequency rectifier lim Circuit Court, thiab ces inverted los ntawm ib tug fais fab zaus inverter Circuit Court.
Nrog rau cov qauv Circuit Court no, lub zog ntawm lub inverter tau zoo heev, qhov tsis muaj qhov poob ntawm lub inverter yog qhov sib raug zoo, thiab kev ua haujlwm tau zoo tuaj. Qhov tsis zoo ntawm lub voj voog yog tias lub voj voog yog qhov nyuaj thiab qhov kev ntseeg tau qis dua li ob lub voj voog saum toj no.
Tswj Circuit Court ntawm inverter Circuit Court
Lub ntsiab circuits ntawm cov saum toj no-hais inverters tag nrho yuav tsum tau paub los ntawm ib tug tswj Circuit Court. Feem ntau, muaj ob txoj kev tswj hwm: square nthwv dej thiab nthwv dej zoo thiab tsis muaj zog. Lub inverter fais fab mov Circuit Court nrog square yoj tso zis yog yooj yim, tsis tshua muaj nqi, tab sis tsis tshua muaj efficiency thiab loj nyob rau hauv harmonic Cheebtsam. . Sine yoj tso zis yog txoj kev loj hlob ntawm inverters. Nrog kev txhim kho ntawm microelectronics thev naus laus zis, microprocessors nrog PWM kev ua haujlwm kuj tau tawm los. Yog li ntawd, lub tshuab inverter rau sine yoj tawm tau matured.
1. Inverters nrog square yoj tso zis tam sim no feem ntau siv mem tes-dav modulation integrated circuits, xws li SG 3 525, TL 494 thiab lwm yam. Kev xyaum tau ua pov thawj tias kev siv SG3525 kev sib xyaw ua ke thiab kev siv fais fab FETs raws li cov khoom siv hluav taws xob hloov pauv tuaj yeem ua tiav qhov kev ua tau zoo thiab tus nqi inverters. Vim tias SG3525 muaj lub peev xwm los tsav ncaj qha fais fab FETs Muaj peev xwm thiab muaj cov ntaub ntawv sab hauv thiab kev ua haujlwm amplifier thiab kev tiv thaiv undervoltage muaj nuj nqi, yog li nws cov kab hluav taws xob peripheral yog qhov yooj yim heev.
2. Lub inverter tswj kev sib xyaw ua ke nrog sine yoj tawm, kev tswj Circuit Court ntawm lub inverter nrog sine yoj tawm tuaj yeem tswj tau los ntawm microprocessor, xws li 80 C 196 MC tsim los ntawm INTEL Corporation, thiab tsim los ntawm Motorola Company. MP 16 thiab PI C 16 C 73 tsim los ntawm MI-CRO CHIP Company, thiab lwm yam. Cov khoos phis tawj ib leeg no muaj ntau lub tshuab hluav taws xob PWM, thiab tuaj yeem teeb tsa lub caj npab sab sauv thiab sab sauv. Thaum lub sij hawm tuag, siv lub tuam txhab INTEL 80 C 196 MC kom paub txog sine yoj tawm hluav taws xob, 80 C 196 MC kom ua tiav cov sine yoj teeb liab tiam, thiab ntes cov AC tso zis voltage kom ua tiav Voltage stabilization.
Xaiv cov khoom siv hluav taws xob hauv Main Circuit Court ntawm Inverter
Qhov kev xaiv ntawm lub ntsiab lub hwj chim Cheebtsam ntawm lubinvertertseem ceeb heev. Tam sim no, cov khoom siv hluav taws xob siv ntau tshaj plaws suav nrog Darlington fais fab transistors (BJT), fais fab teb cov nyhuv transistors (MOS-F ET), insulated gate transistors (IGB). T) thiab tig-tawm thyristor (GTO), thiab lwm yam., cov khoom siv feem ntau siv hauv cov tshuab hluav taws xob me me yog MOS FET, vim tias MOS FET muaj qis dua ntawm lub xeev qhov hluav taws xob poob thiab siab dua qhov hloov zaus ntawm IG BT feem ntau. siv nyob rau hauv high-voltage thiab loj-muaj peev xwm systems. Qhov no yog vim lub xeev tsis kam ntawm MOS FET nce nrog qhov nce ntawm qhov hluav taws xob, thiab IG BT yog nyob rau hauv nruab nrab-muaj peev xwm tshuab occupies ib tug zoo dua, thaum nyob rau hauv super-loj-muaj peev xwm (tshaj 100 kVA) systems, GTOs feem ntau yog siv. raws li cov khoom siv fais fab.
Post lub sij hawm: Oct-21-2021
