A. Ukhuseleko olufanelekileyo lwemveliso kunye nokumelana okunamandla okugqithisileyo

Ekubeni ii-capacitors zefilimu zineempawu zokuziphilisa kwaye ziyilwe ngokuhambelana nomgangatho we-1EC61071, ukumelana ne-surge voltage ye-capacitor kungaphezulu kwe-1.5 ye-voltage elinganisiweyo. Ukongeza, i-capacitor isebenzisa itekhnoloji yefilimu ehlukanisiweyo, ngoko ke i-capacitor ayizukuvelisa ukwahlukana kwesekethe emfutshane kwithiyori, nto leyo ephucula kakhulu ukhuseleko lolu hlobo lwe-capacitor. Imo yokusilela eqhelekileyo yi-open circuit. Kwizicelo ezithile, ukumelana ne-peak voltage ye-capacitor nayo ikwaluphawu olubalulekileyo lokuvavanya ii-capacitors. Enyanisweni, kwii-capacitors ze-electrolytic, i-surge voltage ephezulu evunyelweyo yi-1.2 times, nto leyo enyanzela abasebenzisi ukuba baqwalasele i-peak voltage kunokuba baqwalasele i-nominal voltage.

B. Iimpawu zobushushu ezilungileyo, uluhlu lobushushu bemveliso lubanzi, ukusuka kwi -40C-105C

Ifilimu yepolypropylene enobushushu obuphezulu esetyenziswa kwi-DC support film capacitor inozinzo lobushushu olufana nolwe-polyester film kunye ne-electrolytic capacitors ezingenalo. Njengoko ubushushu bunyuka, amandla e-polypropylene film capacitor ayancipha ngokubanzi, kodwa umlinganiselo wokuncipha umncinci kakhulu, malunga ne-300PPM/C; ngelixa amandla efilimu yepolyester etshintsha kakhulu ngobushushu, nokuba kukwinqanaba lobushushu obuphezulu okanye kwinqanaba lobushushu obuphantsi, eliyi +200~+600PPM/C.

C. Iimpawu zefrikhwensi ezizinzileyo, iimpawu ezilungileyo zefrikhwensi ephezulu yemveliso

Okwangoku, uninzi lwee-controller switching frequencies zimalunga ne-10K HZ, nto leyo efuna ukuba imveliso ibe nokusebenza kakuhle kwe-high-frequency. Kwii-electrolytic capacitors kunye nee-polyester film capacitors, le mfuneko yingxaki.

D. Akukho polarity, inokumelana ne-voltage ebuyela umva

Ii-electrode zee-capacitors zefilimu ziintsimbi ezincinci ezifakwe kwiifilimu ezincinci. Le mveliso ayinayo i-polarity, ngoko ke ilula kakhulu kubasebenzisi, kwaye akukho mfuneko yokuqwalasela iipali ezilungileyo nezingalunganga. Kwii-capacitors ze-electrolytic, ukuba i-voltage ebuyela umva edlula amaxesha ayi-1.5 kwi-Un isetyenziswa kwi-capacitor ye-electrolytic, iya kubangela impendulo yekhemikhali ngaphakathi kwi-capacitor. Ukuba le voltage ihlala ixesha elide ngokwaneleyo, i-capacitor iya kuqhuma, okanye i-electrolyte iya kuphuma njengoko uxinzelelo lwangaphakathi lwe-capacitor lukhutshwa.

E. I-voltage ephezulu, akukho zithintelo zochungechunge kunye nokulinganisela ezifunekayo

Ukuze konyuswe amandla okukhupha, i-voltage yebhasi yezithuthi ezixutyiweyo kunye nezithuthi ze-fuel cell inendlela yokunyuka. Ii-voltage zebhetri eziqhelekileyo ezinikezelwa kwiimoto ezikwimarike yi-280V, 330V kunye ne-480V. Ii-capacitor ezihambelana nazo zahlukile kubavelisi abahlukeneyo, kodwa ngokubanzi ziyi-450V, 600V, 800V, kwaye umthamo usukela kwi-0.32mF ukuya kwi-2mF. I-voltage elinganisiweyo yee-capacitors ze-electrolytic ayiphezulu kune-500V, ngoko ke xa i-voltage yebhasi iphezulu kune-500V, inkqubo inokuphucula kuphela inqanaba le-voltage yokumelana yebhanki ye-capacitor ngokudibanisa ii-capacitors ze-electrolytic ngokulandelelana. Ngale ndlela, ayikokwandisa kuphela umthamo kunye neendleko zebhanki ye-capacitor, kodwa kunye ne-inductance kunye ne-ESR kwisekethe ziyanda.

F. I-ESR ephantsi, ukumelana okunamandla komsinga we-ripple

I-capacitor yefilimu inkulu kune-200mA/μF, kwaye i-capacitor ye-electrolytic inomthamo we-ripple current we-20mA/μF. Olu phawu lunokunciphisa kakhulu umthamo we-capacitor efunekayo kwinkqubo.

G. I-ESL ephantsi

Uyilo lwe-inductance ephantsi ye-inverter lufuna ukuba icandelo layo eliphambili, i-DC-Link capacitor, libe ne-inductance ephantsi kakhulu. Ii-capacitor zefilimu yesihluzo se-DC-Link DC ezisebenza kakuhle zidityaniswe ne-busbar kwi-capacitor module ukunciphisa i-self-inductance yayo (<30nH), nto leyo enciphisa kakhulu isiphumo se-oscillation kwi-frequency yokutshintsha efunekayo. Ke ngoko, i-capacitor yokufunxa eqhagamshelwe ngaxeshanye kwi-capacitor ye-DC-Link idla ngokushiywa, kwaye i-electrode ye-capacitor iqhagamshelwe ngqo kwi-IGBT.

H. Ukumelana okunamandla kwamandla ombane

Iyakwazi ukumelana nemisinga emikhulu ekhawulezileyo. Itekhnoloji yokusika amaza kunye netekhnoloji yokuqinisa i-capacitor coating inokuphucula ubushushu bomsinga wemveliso kunye nokukwazi ukukhwankqisa oomatshini.

J. Ubomi obude benkonzo

Iimpawu zefilimu ezingagugiyo zimisela ukuba i-capacitor yefilimu inobomi obude kakhulu, ingakumbi kwi-voltage elinganisiweyo kunye nobushushu bokusebenza obulinganisiweyo, ubomi benkonzo bungaphezulu kweeyure eziyi-15000-20000; ukuba umyinge yi-30Km/H, inokuba ne-450000Km kubomi benkonzo, kwaye ubomi be-capacitor banele umgama wemoto.

 

Ii-capacitor zefilimu ze-DC-LINK ezisebenza kakuhle zii-capacitor ezisebenzisa iinkqubo ezintsha zokuvelisa kunye netekhnoloji yefilimu eyenziwe ngesinyithi. Zonyusa uxinano lwamandla kwii-capacitor zefilimu zemveli, oko kuthetha ukuba ubungakanani bee-capacitor nabo buyancitshiswa. Kwelinye icala, idibanisa i-capacitor core kunye ne-busbar ukuhlangabezana neemfuno zobungakanani obuguquguqukayo zabathengi, okungenzi nje kuphela ukuba yonke i-inverter module ibe ncinci ngakumbi, kodwa ikwanciphisa kakhulu i-inductance elahlekileyo kwisekethe yesicelo, okwenza ukusebenza kwesekethe kuzinze ngakumbi. Uyilo lwesekethe olusetyenziswa kwizithuthi zombane lune-voltage ephezulu, i-current esebenzayo ephezulu, i-overvoltage, i-voltage ebuyela umva, i-current ephezulu, kunye neemfuno zobomi obude. Ii-capacitor zefilimu ngokungathandabuzekiyo zikhetho lwezithuthi zombane njengee-capacitor zenkxaso ye-DC.