Ukuqonda ezi ngqikelelo ze-inverter ezingama-35 kunokunyusa ubuchule bakho kumanqanaba anomtsalane!
Ukuqonda ezi ngqikelelo ze-inverter ezingama-35 kunokunyusa ubuchule bakho kumanqanaba anomtsalane!
Igama elithi VFD (i-Variable-frequency Drive) ye-inverter ibonisa umsebenzi wayo wokulawula ii-motor ze-AC ngokulungelelanisa ubuninzi kunye nobukhulu bokunikezelwa kwamandla. E-Asia, ngakumbi e-China naseMzantsi Korea, igama elithi VVVF (i-Variable Voltage Variable Frequency Inverter) lisetyenziswe ngenxa yempembelelo yaseJapan. I-VVVF imele iVoltage eguquguqukayo kunye neFrequency eGuquguqukayo, ibhekiselele kuhlengahlengiso lwamandla ombane kunye namaza, ngelixa i-CVCF (i-Constant Voltage kunye ne-Constant Frequency) ibonisa amandla ombane asisigxina kunye namaza.
Imithombo yamandla ihlelwe ngokwe-AC kunye ne-DC. Uninzi lwamandla eDC luthathwe kwi-AC ngokuguqulwa, ukulungiswa, kunye nokucoca. Amandla e-AC amalunga ne-95% yawo onke amandla okusetyenziswa kwamandla, kunye nesigaba esinye kunye nesigaba sesithathu samandla e-AC alandela imigangatho yombane kunye namaza omoya kumazwe ahlukeneyo. Ngokomzekelo, kwilizwe laseChina, isigaba esisodwa se-AC yi-220V kunye nesigaba sesithathu se-AC yi-380V, zombini kwi-50Hz. I-inverter iguqula i-voltage esisigxina kunye ne-frequency AC amandla kumbane oguquguqukayo okanye amandla e-AC. Le nkqubo ibandakanya ukulungiswa kwe-AC ukuya kwi-DC kunye nokuguqula i-DC ibuyele kwi-AC, kunye nenkqubo yokugqibela ebizwa ngokuba yi-"inversion." Izixhobo eziguqula i-DC ibe yi-fixed frequency kunye ne-voltage AC ibizwa ngokuba zii-inverters, ngelixa ezo zivumela i-frequency ehlengahlengiswayo kunye ne-voltage zibhekiswa kuzo njengee-variable-frequency drives.
Ii-inverters eziphumayo ziye zalinganisa amaza e-sine, asetyenziswa ikakhulu kulawulo lwesantya seemotor ezikwinqanaba lesithathu le-asynchronous, kwaye zikwabizwa ngokuba ngabalawuli besantya esiguqukayo. Kwizicelo ezifuna umgangatho ophezulu wamaza, njengezixhobo zokuvavanya kwisixhobo, i-waveform iyacokiswa ukuze ivelise i-sine wave esemgangathweni, kwaye ezo zixhobo zibizwa ngokuba yi-variable-frequency power supply. Unikezelo lwamandla oluguquguqukayo ludla ngokuphindwe ka-15 ukuya kwangama-20 ngaphezulu kuneedrive eziguqukayo. Inxalenye ephambili enoxanduva lokuvelisa i-voltage eguquguqukayo okanye i-frequency kwisixhobo soguqulo yi "inverter," kungoko imveliso ibizwa ngokuba "yi-inverter." Ii-inverters zikwasetyenziswa kwizixhobo zasekhaya, ezinje nge-air conditioners kunye nezibane ze-fluorescent. Kwizicelo zolawulo lweemoto, ii-inverters zinokuhlengahlengisa zombini i-voltage kunye ne-frequency, ngelixa ezo zisetyenziselwa izibane ze-fluorescent ikakhulu zilawula ukuhanjiswa kombane. Izixhobo kwiimoto eziguqula amandla ebhetri (DC) kwi-AC nazo zithengiswa phantsi kwegama elithi "inverter." Umgaqo wokusebenza wee-inverters usetyenziswa ngokubanzi kwiinkalo ezahlukeneyo, ezinje ngombane wekhompyuter, apho ii-inverters zicinezela i-voltage ebuyela umva, ukuguquguquka kwamaza, kunye nokumka kombane ngoko nangoko.
Yintoni i-inverter?
I-inverter sisixhobo esiguqula amandla ombane asetyenziswayo ukuya kwesinye amaza sisebenzisa isenzo sokutshintsha kwezixhobo zesemiconductor yamandla. Iqukethe iisekethe ezimbini eziphambili: isiphaluka esiphambili (imodyuli yokulungisa, i-electrolytic capacitor, kunye nemodyuli ye-inverter) kunye nesiphaluka sokulawula (ukutshintsha ibhodi yokubonelela umbane kunye nebhodi yesiphaluka yokulawula). I-CPU ifakwe kwibhodi yesekethe yolawulo, kunye nesoftware yokusebenza ye-inverter efakwe kwi-CPU. Isoftware yemodeli efanayo yokuguqula ilungiswa ngokubanzi, ngaphandle kwe-Sanjing inverter, isoftware yayo inokuhlengahlengiswa ngokusekelwe kwiimfuno zokusetyenziswa.
Ngowuphi umahluko phakathi kwe-PWM kunye ne-PAM?
I-PWM (i-Pulse Width Modulation) ilungelelanisa ububanzi bee-pulses kuloliwe we-pulse ngokwepateni ethile yokulawula ukuphuma kunye ne-waveform. I-PAM (i-Pulse Amplitude Modulation) ilungelelanisa i-amplitude ye-pulses kuloliwe we-pulse ukulawula ukuphuma kunye ne-waveform.
Nguwuphi umahluko phakathi kohlobo lombane kunye nohlobo lwangoku lwe-inverters?
Isekethe ephambili ye-inverter inokwahlulwa ngokubanzi ibe ziindidi ezimbini: ii-voltage-type inverters ziguqula umthombo wombane we-DC ukuya kwi-AC usebenzisa i-capacitors yokucoca isekethe ye-DC, ngelixa ii-inverters zohlobo lwangoku ziguqula umthombo wangoku we-DC kwi-AC usebenzisa i-inductors yokucoca isekethe ye-DC.
Kutheni i-voltage kunye ne-frequency ye-inverter itshintsha ngokulinganayo?
I-torque ye-motor induction iveliswa yintsebenziswano phakathi kwe-magnetic flux kunye ne-rotor yangoku. Kwi-frequency elinganisiweyo, ukuba i-voltage ayitshintshi kwaye i-frequency iyancitshiswa, i-magnetic flux inokugqithisa kakhulu, ikhokelela kujikelezo lwemagnethi kunye nomonakalo onokwenzeka wemoto. Ke ngoko, i-voltage kunye ne-frequency kufuneka itshintshe ngokulinganayo. Le ndlela yokulawula isetyenziswa ngokuqhelekileyo kwii-inverters zokulondoloza amandla kubalandeli kunye neepompo.
Xa i-motor induction iqhutywa ngamandla ombane osebenzayo kunye nokuhla kwamandla ombane, ukwanda kwangoku. Kwiimoto eziqhutywa yi-inverter, ukuba i-voltage iyancipha xa i-frequency iyancipha, ngaba ngoku iyenyuka?
Xa i-frequency iyancipha (isantya esiphantsi), ukunyuka kwangoku ukugcina imveliso yamandla efanayo. Nangona kunjalo, phantsi kweemeko zetorque rhoqo, okwangoku kuhlala kuzinzile.
Yiyiphi i-torque yokuqala kunye ne-torque xa usebenzisa i-motor ene-inverter?
Nge-inverter, njengoko i-motor isantya, i-frequency kunye ne-voltage ziyanda ngokuhambelanayo, ukunciphisa ukuqala ngoku ukuya ngaphantsi kwe-150% ye-current rated (125% ukuya kwi-200% ngokuxhomekeke kwimodeli). Ngokuthe ngqo kwi-intanethi ukuqala ngamandla ombane asetyenziswayo kukhokelela ekuqaliseni imisinga amathandathu ukuya kwasixhenxe ngokuphindwe kabini kunokalo lwangoku, okubangela uxinzelelo koomatshini kunye nombane. Iimotor eziqhutywa yi-inverter ziqala kakuhle (ngexesha elongezelelweyo lokuqala), ngokuqala ngoku kwi-1.2 ukuya kwi-1.5 amaxesha alinganiswe ngoku kunye nokuqala i-torque kwi-70% ukuya kwi-120% ye-torque. Kwi-inverters enokunyusa i-torque ngokuzenzekelayo, i-torque yokuqala idlula i-100%, ivumela ukuqala komthwalo ogcweleyo.
Yintoni imowudi ye-V/f?
Xa i-frequency iyancipha, i-voltage V nayo iyancipha ngokulinganayo. Ubudlelwane bokulingana phakathi kwe-V kunye no-f bumiselwa ngokusekelwe kwiimpawu zemoto kwaye ngokuqhelekileyo kugcinwa kwimemori yomlawuli (ROM). Iimpawu ezininzi zinokukhethwa ngokutshintsha okanye i-potentiometers.
Itshintsha njani i-torque yemoto xa i-V kunye ne-f zihlengahlengiswa ngokulinganayo?
Ukuba i-voltage iyancipha ngokulinganayo kunye ne-frequency, ukuthambekela kwe-torque ukuhla ngesantya esisezantsi kuvela ngenxa yokunciphisa i-AC impedance kunye nokungatshintshi kwe-DC. Ukuhlawula kunye nokufezekisa i-torque eyaneleyo yokuqalisa kwi-frequencies ephantsi, i-voltage ephumayo kufuneka yonyuswe kancinane. Le mbuyekezo, eyaziwa ngokuba yi-torque boost, inokufumaneka ngeendlela ezahlukeneyo, kubandakanywa ukulungiswa ngokuzenzekelayo, ukhetho lwe-V / f mode, okanye izicwangciso ze-potentiometer.
Ukuba incwadana ichaza uluhlu lwesantya se-60 ~ 6Hz (10:1), ngaba oku kuthetha ukuba akukho mveliso yamandla engaphantsi kwe-6Hz?
Amandla asenokukhutshwa ngaphantsi kwe-6Hz. Nangona kunjalo, ngokuqwalasela ukunyuka kobushushu bemoto kunye nokuqalisa i-torque, ubuncinci bokusebenza rhoqo bubekwe malunga ne-6Hz ukunqanda ukufudumeza okugqithisileyo ngelixa ugcina imveliso yetorque. I-frequency ye-output yangempela (i-frequency yokuqala) ye-inverter iyahluka ngemodeli, ngokuqhelekileyo ukusuka kwi-0.5Hz ukuya kwi-3Hz.
Ngaba kunokwenzeka ukugcina i-torque rhoqo kunye nendibaniselwano yemoto esemgangathweni ngaphezulu kwe-60Hz?
Ngokuqhelekileyo, akunakwenzeka. Ngaphezulu kwe-60Hz (okanye i-50Hz kwezinye iindlela), amandla ombane ahlala engatshintshi, okukhokelela kwiimpawu zamandla ezingaguqukiyo. Xa i-torque engaguqukiyo ifuneka ngesantya esiphezulu, ukukhetha ngononophelo amandla emoto kunye ne-inverter kubalulekile.
Yintoni ulawulo oluvulelekileyo?
Xa i-speed detector (PG) ifakwe kwi-motor kwaye isantya sokwenyani sibuyiselwa kwisixhobo solawulo ukuze silawuleke, sibizwa ngokuba yi-"closed-loop" control. Ukusebenza ngaphandle kwengxelo yePG kubizwa ngokuba "yi-open-loop" ulawulo. Abaguquli benjongo ngokubanzi ngokuqhelekileyo basebenzisa ulawulo oluvulekileyo, nangona ezinye iimodeli zibonelela ngengxelo yePG njengokhetho. Isantya esingenazinzwa ezivaliweyo siqikelela isantya semoto esisekwe kwimodeli yezibalo ye-flux, ngokufanelekileyo ukwenza inkqubo yokulawula i-loop evaliweyo enesantya esibonakalayo.
Kwenzeka ntoni xa kukho ukungafani phakathi kwezantya zokwenyani kunye nezo zibekiweyo?
Kulawulo oluvulekileyo lwe-loop, nokuba i-inverter ikhupha i-frequency iseti, isantya semoto sinokuhluka phakathi koluhlu lwe-slip rated (1% ukuya kwi-5%) phantsi komthwalo. Kwizicelo ezifuna ukuchaneka kolawulo lwesantya esiphezulu kunye nokusebenza kufutshane neseti-isantya ngaphandle kotshintsho lomthwalo, ii-inverters ezinempendulo ye-PG (ekhoyo njengokhetho) zinokuqeshwa.
Ngaba ukuchaneka kwesantya kungaphuculwa kusetyenziswa injini enempendulo yePG?
Ii-inverters ezinengxelo ye-PG zibonelela ngokuchaneka kwesantya esiphuculweyo. Nangona kunjalo, ukuchaneka kwesantya sokwenyani kuxhomekeke ekuchanekeni kwePG kunye nesisombululo se frequency ye-inverter.
Yintoni umsebenzi wokuchasa?
Ukuba ixesha lokukhawulezisa iseti lifutshane kakhulu, i-frequency ye-inverter yemveliso inokutshintsha ngokukhawuleza kunesantya semoto (i-angular frequency frequency), ebangela ukugqithisa kunye nokukhubeka kwi-inverter, emisa ukusebenza. Oku kubizwa ngokuba kukumisa. Ukuthintela ukuzinza kunye nokugcina ukusebenza kwemoto, i-inverter ibeka iliso ngoku kwaye ihlengahlengise amaxesha. Ngexesha lokukhawuleza, ukuba i-current iba yinto egqithisileyo, izinga lokukhawuleza liyancipha. Kukwasebenza okufanayo kwi-deceleration. Ngokudibeneyo, ezi ndlela zenza umsebenzi wokuchasana nokungqengqa.
Yintoni intsingiselo yee-inverters ezivumela useto olwahlukileyo lokukhawulezisa kunye namaxesha okunciphisa ngokuchaseneyoabo basebenzisa isethingi eqhelekileyo?
Ii-inverters ezivumela ukukhawuleziswa okwahlukileyo kunye noseto lwexesha lokuthomalalisa lufanelekile kwizicelo ezifuna ukukhawuleza okufutshane kunye nokunciphisa kancinci, okanye izixhobo zomatshini ezincinci ezineemfuno ezingqongqo zesingqisho semveliso. Ngokwahlukileyo, kwizicelo ezinje ngee-fan drives apho ukukhawulezisa kunye namaxesha okuthoba isantya zinde zombini, useto oluqhelekileyo lokukhawulezisa kunye namaxesha okuthoba lufanelekile.
Yintoni i-regenerative braking?
Xa i-frequency yomyalelo icuthwa ngexesha lokusebenza kwemoto, imotor itshintshela kwimowudi yejeneretha ye-asynchronous kwaye isebenza njengebhuleki. Le nkqubo yaziwa ngokuba yi-regenerative (yombane) braking.
Ngaba amandla amakhulu okuqhobosha anokuphunyezwa?
Amandla ahlaziywa kwi-motor agcinwa kwi-inverter's filter capacitor. Ngenxa yomthamo we-capacitor kunye nokulinganiselwa komlinganiselo wokulinganisa amandla ombane, amandla okuvuselela ukuvuselela kwii-inverters zenjongo jikelele malunga ne-10% ukuya kwi-20% yetorque elinganisiweyo. Ngeeyunithi zokuqhobosha ozikhethelayo, oku kunokongezwa ukuya kuma-50% ukuya kwi-100%.
Yiyiphi imisebenzi ekhuselayo ye-inverter?
Imisebenzi yokukhusela ingahlelwa ngolu hlobo lulandelayo:
(1) Ukulungisa ngokuzenzekelayo iimeko ezingaqhelekanga, ezinje ngothintelo lwe-stall overcurrent kunye nothintelo oluhlaziyiweyo lwe-overvoltage stall.
(2) Ukuthintela iimpawu zokulawula i-PWM kwi-semiconductors yamandla ekuboneni izinto ezingaqhelekanga, ezibangela ukuba injini imise ngokuzenzekelayo. Imizekelo ibandakanya ukucinywa kwe-overcurrent, ukuvalwa kombane ovuselelweyo, ukukhuselwa kobushushu befeni ye-semiconductor, kunye nokhuseleko lokusilela kombane ngoko nangoko.
Kutheni umsebenzi wokukhusela we-inverter usebenza xa usebenzisa i-clutch yomthwalo oqhubekayo?
Xa i-clutch idibanisa umthwalo, i-motor itshintsha ngokukhawuleza ukusuka ekungangeni-mthwalo ukuya kwindawo yokutyibilika okuphezulu. Isiphumo salo sangoku esiphezulu sibangela ukuba isiguquli sihambe ngenxa yokusebenza ngokugqithisileyo, nokuma.
Kutheni i-inverter iyeka ngexesha lokusebenza xa iinjini ezinkulu ziqala kwindawo enye?
Ngexesha lokuqalisa i-motor, i-inrush yangoku ihambelana nomthamo we-motor, ibangela ukuhla kwamandla ombane kwicala le-stator ye-transformer. Kwiimoto ezinkulu, oku kwehla kwamandla ombane kunokuchaphazela kakhulu ezinye izixhobo eziqhagamshelwe kwi-transformer efanayo. I-inverter inokuthi ingayiqondi kakuhle le nto njenge-undervoltage okanye ilahleko yamandla ngokukhawuleza, ibangele umsebenzi wayo wokukhusela (IPE) kwaye ibangele ukuba iyeke.
Yintoni isisombululo se-inverter kwaye kutheni sibalulekile?
Kwii-inverters ezilawulwa ngedijithali, nokuba umyalelo wefrikhwensi ngumqondiso we-analog, i-frequency yemveliso inikezelwa ngamanyathelo ahlukeneyo. Eyona yunithi incinci kula manyathelo ibizwa ngokuba yi-inverter resolution. Ngokuqhelekileyo, isisombululo se-inverter sisuka kwi-0.015Hz ukuya kwi-0.5Hz. Umzekelo, ngesisombululo se-0.5Hz, ii-frequencies ezingaphezu kwe-23Hz zinokuhlengahlengiswa ukuya kwi-23.5Hz okanye i-24.0Hz, okukhokelela ekusebenzeni kwe-motor step. Oku kunokuba yingxaki kwizicelo ezinjengolawulo oluqhubekayo lokujija. Kwiimeko ezinjalo, isisombululo esijikeleze i-0.015Hz siqinisekisa ukuba i-motor-pole motor, inyathelo ngalinye lihambelana ngaphantsi kwe-1r / min, inikezela ukulungelelaniswa okwaneleyo. Ezinye iimodeli ze-inverter zahlula phakathi kwesisombululo somyalelo kunye nesisombululo semveliso.
Ngaba kukho naziphi na izithintelo kwindlela yofakelo lwe-inverter?
Uyilo lwe-inverter luqwalasela ukusebenza okupholileyo kumalungu angaphakathi kunye nomva. Ukuqhelaniswa neyunithi kubalulekile ekungeneni komoya. Kwi-panel-mounted or wall-mounted unit-type inverters, ukufakwa ngokuthe nkqo kwindawo yobude kuyacetyiswa.
Ngaba kunokwenzeka ukudibanisa ngqo i-motor kwi-inverter ye-fixed-frequency ngaphandle kokusebenzisa isiqalisi esithambileyo?
Kwii-frequencies eziphantsi kakhulu, oku kunokwenzeka. Nangona kunjalo, ukuba i-frequency iseti iphezulu, iimeko zifana ngqo ne-intanethi eqala ngamandla asetyenziswa rhoqo. Oku kunokukhokelela ekuqaliseni okugqithisileyo (izihlandlo ezithandathu ukuya kwezisixhenxe kwi-current rated current), kwaye ekubeni i-inverter iya kuhamba ukuze ikhusele i-overcurrent, i-motor iya kusilela ukuqala.
Ngawaphi amanyathelo okhuseleko ekufuneka athatyathwe xa usebenzisa injini engaphezulu kwe-60Hz?
Xa usebenza ngaphezulu kwe-60Hz, qwalasela oku kulandelayo:
(1) Qinisekisa ukuba oomatshini kunye nezixhobo ezinxulumeneyo zinokumelana nokusebenza kwezo santya (amandla omatshini, ingxolo, ukungcangcazela, njl. njl.).
(2) I-motor ingena kuluhlu lwemveliso yamandla rhoqo, kwaye i-torque yayo yokuphuma kufuneka igcine umthwalo womsebenzi (kubalandeli kunye neepompo, amandla okukhutshwa kwe-shaft ayanda kunye netyhubhu yesantya, ngoko ke ukunyuka kwesantya esincinci kufuna ingqalelo).
(3) Ukuthwala ubomi kunokuchaphazeleka kwaye kufanele kuqwalaselwe ngenyameko.
(4) Ngeenjini ezinomthamo ophakathi ukuya kubukhulu, ngakumbi iinjini ezineepali ezimbini, dibana nomvelisi ngaphambi kokuba zisebenze ngaphezulu kwe-60Hz.
Ngaba ii-inverters ziyakwazi ukuqhuba iimotor zegiya?
Ngokuxhomekeke kwisakhiwo somnciphisi kunye nendlela yokuthambisa, iingqwalasela ezininzi ziyasebenza. Ngokuqhelekileyo, izakhiwo zegiya zinokunyamezela ubuninzi be-70 ~ 80Hz. Ngokuthambisa ioyile, ukusebenza okuqhubekayo ngesantya esisezantsi kunokonakalisa iigiya.
Ngaba ii-inverters zinokuqhuba iimotor ezinenqanaba elinye? Ngaba banokusebenza kumandla wesigaba esinye?
Ngokuqhelekileyo, akunakwenzeka. Kwiimotor zesigaba esisodwa kunye nabalawuli besantya okanye iindlela zokutshintsha-ukuqala, ukunciphisa isantya ngaphantsi kwendawo yokusebenza kunokugqithisa i-winding encedisayo. Kwiintlobo ze-capacitor-start okanye i-capacitor-run-run, ukuqhuma kwe-capacitor kunokwenzeka. Ii-inverters zifuna unikezelo lwamandla olunezigaba ezithathu, nangona ezinye iimodeli zomthamo omncinci zinokusebenza kumandla wesigaba esinye.
Angakanani amandla asetyenziswa yi-inverter ngokwayo?
Ukusetyenziswa kwamandla kuxhomekeke kwimodeli ye-inverter, imeko yokusebenza, kunye nobuninzi bokusetyenziswa. Kunzima ukukhankanya amaxabiso achanekileyo. Nangona kunjalo, ukusebenza kwe-inverter ngaphantsi kwe-60Hz kumalunga ne-94% ukuya kwi-96%, enokusetyenziswa ukuqikelela ilahleko. Kwi-inverters kunye ne-braking yokuvuselela eyakhelwe-ngaphakathi (umzekelo, uchungechunge lwe-FR-K), ukuqwalasela ilahleko ye-braking kwandisa ukusetyenziswa kwamandla, into ekufuneka uyiqaphele kwi-design panel yolawulo.
Kutheni umsebenzi oqhubekayo ungenzeki kulo lonke uluhlu lwe-6~60Hz?
Uninzi lweemoto zisebenzisa abalandeli bangaphandle kwi-shaft okanye iiblades kwi-rotor end ring ukupholisa. Isantya esicuthiweyo sinciphisa ukusebenza kokupholisa, kuthintela i-motor ekunyamezeleni isizukulwana sobushushu esifanayo nesantya esiphezulu. Ukujongana noku, nciphisa i-torque yomthwalo onesantya esisezantsi, sebenzisa i-inverter enkulu kunye nendibaniselwano yemoto, okanye uqeshe injini ekhethekileyo.
Ngawaphi amanyathelo okhuseleko afanele athathwe xa usebenzisa i-motor ene-brake?
Isekethe yokuvuselela i-brake kufuneka inikwe amandla ukusuka kwicala lokufaka inverter. Ukuba isiqhoboshi siyasebenza ngelixa i-inverter ikhupha amandla, i-overcurrent inokubangela ukuvalwa. Ke ngoko, qinisekisa ukuba i-brake isebenza kuphela emva kokuba i-inverter iyekile ukukhupha amandla.
Kutheni le nto i-motor ingaqali xa usebenzisa i-inverter ukuqhuba i-motor ene-capacitors yokuphucula amandla?
I-inverter yangoku igeleza kwi-capacitors yokuphucula amandla. Umbane wokutshaja unokukhupha i-overcurrent (OCT) kwi-inverter, ukuthintela ukuqalisa. Ukusombulula oku, susa ii-capacitors kwaye usebenzise i-motor. Ukomeleza into yamandla, ukufaka i-AC reactor kwicala lokufaka inverter kuyasebenza.
Bungakanani ubomi be-inverter?
Nangona ii-inverters zizixhobo ezimileyo, ziqulathe izinto ezisetyenziswayo njenge-filter capacitors kunye neefeni zokupholisa. Ngokugcinwa rhoqo kwezi nxalenye, i-inverter inokuhlala ngaphezu kweminyaka elishumi.
I-fan yokupholisa ijoliswe njani kwi-inverter, kwaye kwenzeka ntoni ukuba iyasilela?
Ezinye ii-inverters zomthamo omncinci azinabalandeli bokupholisa. Kwiimodeli ezinamafeni, ukuhamba komoya kuqhelekile ukusuka ezantsi ukuya phezulu. Xa ufaka i-inverter, gwema ukubeka izixhobo ezithintela ukungena komoya kunye nokukhupha ngaphezulu nangaphantsi kweyunithi. Musa ukubeka iikhomponenti ezinobuzaza kubushushu ngaphezu kwe-inverter. Ukungaphumeleli kwefeni kukhuselwe ngokubona ukumisa kwefeni okanye ukufudumeza okugqithisileyo kwefeni yokupholisa.
Bunokumiselwa njani ubomi bee-capacitors zokucoca?
Ii-capacitors zokucoca, ezisetyenziswa njenge-capacitors, ngokuthe ngcembe zilahlekelwa amandla azo e-electrostatic ngokuhamba kwexesha. Ukulinganisa rhoqo umthamo we-electrostatic, kwaye ucinge ukuba ubomi be-capacitor buphelelwe xa ifikelela kwi-85% yomthamo olinganisiweyo.
Ngaba kukho naziphi na izithintelo kwindlela yofakelo lwe-inverter?
Ii-inverters zihlala zigcinwa ngaphakathi kweepaneli. Nangona kunjalo, iipaneli ezivaliweyo ngokupheleleyo zinkulu, zidla indawo, kwaye zibiza. Amanyathelo okunciphisa aquka:
(1) Ukuyila iiphaneli zokupholisa okufunekayo kwezixhobo ezichanekileyo.
(2) Ukwandisa indawo yokupholisa kusetyenziswa iisinki zobushushu ze-aluminiyam, iifins, kunye neearhente zokupholisa.
(3) Ukusebenzisa imibhobho yobushushu.
Ukongeza, iimodeli ze-inverter ezinamacala angasemva abonakalisiweyo ziye zaphuhliswa.
Umthamo we-inverter kufuneka ukhethwe njani ukunyusa isantya sebhanti lokuhambisa ukuya kwi-80Hz?
Ukusetyenziswa kwamandla amabhanti okuhambisa kuhambelana nesantya. Ukuze usebenze kwi-80Hz, zombini i-inverter kunye namandla ombane kufuneka anyuswe ngokulinganayo ukuya kwi-80Hz / 50Hz, oko kukuthi, ukunyuka kwamandla angama-60%.
Izilumkiso ngexesha lokugcinwa nokuhlolwa:
(1) Emva kokucima amandla okufakelwa, linda ubuncinane imizuzu emi-5 ngaphambi kokuba uqale ukuhlola (qinisekisa ukuba isalathisi sokutshaja i-LED icimile) ukuphepha ukutshitshiswa kombane.
(2) Ukugcinwa, ukuhlolwa, kunye nokutshintshwa kwecandelo kufuneka kwenziwe ngabasebenzi abaqeqeshiweyo. Susa zonke izinto zetsimbi (iiwotshi, izacholo, njl.njl.) Ngaphambi kokuba uqale umsebenzi kwaye usebenzise izixhobo ezifakwe kwi-insulated.
(3) Musa ukuguqula i-inverter ngokukhawuleza ukukhusela ukutshitshiswa kombane kunye nomonakalo wemveliso.
(4) Ngaphambi kokuba usebenze i-inverter, qinisekisa i-voltage yegalelo. Ukudibanisa umbane we-380V kwi-inverter yeklasi ye-220V inokubangela umonakalo (i-capacitor, i-varistor, ukuqhuma kwemodyuli, njl.).
Ii-inverters, eziqulunqwe ngokuyinhloko kwizinto ze-semiconductor, zifuna ukuhlolwa kwansuku zonke ukuze zikhusele kwiindawo ezingasebenziyo, ezifana neqondo lokushisa, ukufuma, uthuli, kunye nokungcangcazela, kunye nokuthintela iimpazamo ezivela kwimida yokuphila kwecandelo.
Izinto zokuhlola:
(1) Ukuhlolwa kwansuku zonke: Qinisekisa ukuba i-inverter isebenza njengoko kufuneka. Sebenzisa i-voltmeter ukujonga igalelo kunye nemveliso yombane ngelixa i-inverter isebenza.
(2) Ukuhlolwa kwexesha: Hlola zonke iindawo ezifikelelekayo kuphela xa i-inverter ivaliwe.
(3) Ukutshintshwa kwecandelo: Ubomi becandelo buchatshazelwa kakhulu yimiqathango yofakelo.