iiPCS zokugcina amandla
Iinkqubo zokugcina amandla ziyinxalenye ebalulekileyo yeenkqubo zamandla ahlaziyekayo zanamhlanje. Zisetyenziswa kakhulu njengoko zinciphisa inkunkuma yamandla kwaye ziphucula ukusebenza kakuhle kweenkqubo zamandla. Ngenxa yokusebenzisana phakathi kweebhetri kunye negridi yamandla, abaguquli kufuneka benze ukuguqulwa kwe-AC-DC kwaye benze ukuhamba kwamandla okuya kwicala elinye. Ukongeza, abaguquli badlala indima ebalulekileyo kwiinkqubo zokugcina amandla ngokulawula amandla ngokulawula ubukhulu kunye necala lamandla, okuvumela ukucheba okuphezulu kunye nokuzaliswa kwentlambo ukuphucula ukusetyenziswa kwamandla, kunye nokubonelela ngokhuseleko lokugqithisa ukuqinisekisa ukhuseleko lwenkqubo.
Phakathi kwesekethe yokulungisa kunye nesekethe yokuguqula,I-capacitor ye-DC-LINKiyadingeka kwinkxaso yangoku kunye nokucoca. Umsebenzi wayo oyintloko kukufunxa umsinga ophezulu we-pulse kwibhasi ye-DC-LINK, ukuthintela ukuba i-pulse voltage ephezulu iveliswe kwi-impedance ye-DC-LINK. Oku kukwakhusela nokuphela komthwalo kwimpembelelo ye-overvoltage.
Ii-capacitors ze-YMIN zineempawu ezilandelayo kwicandelo lokuguqula
01. Amandla aphezulu
I-DC-Link capacitor igcina amandla ombane, ivumela ukuba ikwazi ukubonelela ngamandla aqhubekayo kwinkqubo yokuguqula ngexesha lokuguquguquka okukhulu kwe-grid voltage okanye ukucima kombane, okuqinisekisa ukusebenza okuqhelekileyo kwenkqubo. Ukongeza, xa inkqubo yokuguqula ifuna amandla amaninzi, i-DC-Link capacitor inokukhupha amandla agciniweyo ngokukhawuleza ukuhlangabezana neemfuno zexesha elifutshane. Kwimithwalo ye-inductive efana neemoto, i-capacitor ikwabonelela ngembuyekezo yamandla asebenzayo, izinzisa i-voltage, kwaye iphucula ukusebenza kwe-motor. Oku kudlala indima ebalulekileyo ekuphuculeni ukusebenza kakuhle kwenkqubo kunye nokuzinza.
02. Ukumelana neVolthi ephezulu kakhulu
Ii-capacitor ze-YMIN, ezinokumelana kwazo nombane ophezulu kakhulu, zingasebenza njengezinto ezikhuselayo. Ngexesha lokusebenza kwe-converter, zikhusela izinto ze-elektroniki ezibuthathaka kumonakalo obangelwa kukunyuka kwamandla ombane. Oku kwenza ukuba ii-converter zokugcina amandla zibonelele ngenkxaso eqinileyo yombane kunye ne-frequency kwigridi yamandla, ukuqinisekisa ukusebenza okuthembekileyo kwenkqubo.
03. Ukumelana nokunyuka okukhulu kwangoku
Ii-capacitor ze-YMIN zifunxa ngokufanelekileyo imisinga ephezulu ye-pulse eyenziwe yi-converter kwisiphelo se-DC-Link, zivumela ulawulo oluchanekileyo lwamandla okukhupha ngolawulo lwangoku. Oku kuqinisekisa ukuba i-converter iyahlangabezana neemfuno zeemeko ezahlukeneyo kwaye inika imveliso ye-AC esemgangathweni ophezulu. Ngexesha lenkqubo yokuqalisa kancinci yabaguquli, ii-capacitor ze-YMIN zenza inxalenye yesekethe yokutshaja, inceda ukuthintela impembelelo enkulu kumbane wokufaka kunye nomthwalo.
04. Ubomi obude
Ii-capacitor ze-YMIN, ezenziwe ngeenkqubo ezimiselweyo kwaye zivavanywa ngaphambi kokufika, zinobunzima obuphezulu kunye nokumelana okuhle kakhulu nokugaleleka kwamandla. Ezi mpawu zivumela abaguquli kwiinkqubo zokugcina amandla ukuba basebenze ngokuzinzileyo ixesha elide, nto leyo enciphisa ukusilela kunye neendleko zokulungisa.
I-Snap-ini-capacitor ye-aluminium electrolyticisincomo sokukhetha
| Isiphelo sesicelo | Imifanekiso | Uthotho | I-voltage elinganisiweyo (i-voltage yokunyuka) | Ubungakanani be-μF | Ubungakanani D*L | Ukumelana nobushushu kunye nobomi |
| Inkqubo yoTshintsho lwaMandla |  | CW3 | 550(600) | 470 | 35*50 | 105℃ 3000H |
 | CW6 | 550(600) | 270 | 35*40 | 105℃ 6000H | |
| 560 | 35*70 | |||||
| 450(500) | 680 | 35*50 |
Indima, iingenelo kunye neempawu zeii-capacitor ze-aluminium electrolytic ezifakwe ngaphakathikwii-applications ze-converter PCS:
Ukumelana nombane ophezulu:Ii-capacitor ze-voltage ephezulu zinokusingatha imisinga emikhulu kwaye zikwazi ukumelana noxinzelelo olubangelwa kukuguquguquka kwe-voltage ephezulu ngoko nangoko okanye umthwalo.
Ukumelana nothotho olulinganayo oluphantsi (ESR) kunye nokunyamezelana kombane ojikelezayo ophezulu:Nge-ESR ephantsi kunye nokumelana okuphezulu kombane ojikelezayo, i-ESR ephantsi ye-capacitor inceda ukunciphisa ukuguquguquka kombane kunye nokuphucula uzinzo lwenkqubo.
Ubomi obude kunye nokuthembeka okuphezulu:Ukumelana nobushushu obuphezulu kunye nobomi obude kuqinisekisa ukusebenza kwayo okuzinzileyo kwiindawo ezinzima. Oku kubalulekile kwizicelo zokugcina amandla ezingaphazanyiswayo zexesha elide ezifana namandla omoya kunye nokuveliswa kwamandla e-photovoltaic.
Iimpawu ezilungileyo zolawulo lobushushu:Susa ubushushu ngokufanelekileyo ukuze uthintele ubushushu obugqithisileyo ukuba bungabangeli ukuwohloka okanye ukungaphumeleli kokusebenza.
Ukulungiswa kwevolumu:Ubuninzi bomthamo ophezulu ngelixa kuthatha indawo encinci.
Icetyisiwei-capacitor yefilimuukhetho
| Isiphelo sesicelo | Imifanekiso | Uthotho | I-voltage elinganisiweyo (i-voltage yokunyuka) | Ubungakanani be-μF | Ubungakanani W*H*B | Ukumelana nobushushu kunye nobomi |
| Inkqubo yoTshintsho lwaMandla |  | I-MDP | 500 | 22 | 32*37*22 | 105℃ 100000H |
| 120 | 57.5*56*35 | |||||
| 800 | 50 | 57.5*45*30 | ||||
| 65 | 57.5*50*35 | |||||
| 120 | 57.5*65*45 | |||||
| 1100 | 40 | 57.5*55*35 | ||||
| 1500 | Ingenziwa ngokwezifiso | Ingenziwa ngokwezifiso |
Indima, iingenelo kunye neempawu zeii-capacitors zefilimukwii-applications ze-converter PCS:
Ukumelana nothotho olusezantsi (ESR):Xa ithelekiswa nee-capacitors ze-electrolytic zemveli, ine-ESR ephantsi, ilahleko ezincinci, kwaye iphucula ukusebenza kakuhle kwenkqubo yonke.
Ukumelana nombane ophezulu:Iyakwazi ukumelana neevolthi eziphezulu ukuqinisekisa ukusebenza okuzinzileyo kwenkqubo phantsi kweemeko zevolthi eziphezulu. Uluhlu lwayo lwevolthi olulinganisiweyo lunokufikelela kwi-350V-2700V, luhlangabezana neemfuno zeemeko ezahlukeneyo zokusetyenziswa.
Uzinzo oluhle kakhulu lobushushu:Uzinzo oluphezulu lobushushu, ngokusebenzisa izixhobo ezikumgangatho ophezulu kunye neenkqubo zokuvelisa eziphambili, kuqinisekisa ukusebenza okuzinzileyo kwiindawo ezinobushushu obuphezulu.
Ubomi benkonzo obude:Ii-capacitor zefilimu ezenziwe ngesinyithi zinobomi obude benkonzo kwaye zibonelela ngenkxaso ethembekileyo ngakumbi kwiinkqubo ze-elektroniki zamandla.
Ubungakanani obuncinci:Itekhnoloji entsha yenkqubo yokuvelisa ephucukileyo ayiphuculi nje kuphela uxinano lwe-capacitance yee-capacitors, kodwa ikwanciphisa kakhulu umthamo kunye nobunzima bomatshini wonke ngomthamo omncinci, nto leyo enika amathuba angakumbi okuphatheka kunye nokuguquguquka kwezixhobo.
Ukusebenza kweendleko eziphezulu:Iimveliso zochungechunge lwe-DC-Link film capacitor zinokunyamezelana kwe-dv/dt okuphezulu ngama-30% kwaye ziphila ixesha elide ngama-30% kunezinye ii-capacitor zefilimu ezikwimarike, ezingaboneleli nje kuphela ngokuthembeka okungcono kwiisekethe ze-SiC/IGBT, kodwa zikwabonelela nangokusebenza ngcono kweendleko.
Shwankathela
YMINIi-capacitors zidlala indima ebalulekileyo kwiinkqubo zokugcina amandla ngenxa yomthamo wazo omkhulu, ukumelana nombane ophezulu kakhulu, kunye nobomi obude. Zinceda ii-inverters zokugcina amandla zigqibe ukuguqulwa kwamandla okubhekisa kwicala ngalinye, ulawulo lwamandla kunye neminye imisebenzi, kwaye ziphucule ukusasazwa komthwalo wegridi yamandla ngokusebenzisa ukucheba okuphezulu kunye nokuzalisa intlambo. Ziphucula ukusebenza kakuhle kokusetyenziswa kwamandla kwe-inverter kwinkqubo yokugcina amandla kwaye lolona khetho lubalaseleyo kwii-inverters kwicandelo le-capacitor.
Ixesha leposi: Disemba-17-2024