Mubvunzo wekutanga: Ndeipi basa guru rema capacitor efirimu mukugadzirwa kwemagetsi emotokari itsva dzesimba?
A: Sema capacitor eDC-link, basa rawo guru nderekupinza mafungu emagetsi ebhazi akakwira, kuchinja-chinja kwemagetsi, uye kudzivirira zvishandiso zveIGBT/SiC MOSFET switching kubva kumagetsi emagetsi anochinja-chinja uye kukwira kwemagetsi.
Mubvunzo wechipiri: Sei chikuva che800V chichida ma capacitor efirimu ane simba repamusoro?
A: Sezvo voltage yebhazi ichiwedzera kubva pa400V kusvika pa800V, zvinodiwa zve capacitor inomira voltage, ripple current absorption efficiency, uye heat dissipation zvinowedzera zvakanyanya. Kuderera kweESR uye high stability voltage hunhu hwema capacitor efirimu zvinonyanya kukodzera nzvimbo dzine high voltage.
Mubvunzo wechitatu: Ndezvipi zvakanakira macapacitor efirimu pane macapacitor emagetsi mumotokari itsva dzemagetsi?
A: Dzinopa voltage yakasimba, ESR yakaderera, hadzina polar, uye dzine hupenyu hwakareba. Frequency yadzo ye resonant yakakwira kupfuura ye electrolytic capacitors, zvichienderana nezvinodiwa ne high-frequency switching yeSiC MOSFETs.
Mubvunzo wechina: Sei mamwe ma capacitor achikonzera kukwira kwemagetsi mumaSiC inverters zviri nyore?
A: ESR yakakwira uye frequency yakaderera ye resonant zvinovadzivirira kuti vasanyatso tora simba re ripple ripple. Kana SiC ikachinja nekukurumidza, voltage inowedzera, zvichikanganisa mudziyo.
Mubvunzo 5: Ma capacitor efirimu anobatsira sei kuderedza saizi yemasisitimu emagetsi ekufambisa?
A: Muchidzidzo cheWolfspeed, inverter ye40kW SiC yaida macapacitor masere chete (zvichienzaniswa nemacapacitor makumi maviri nemaviri emagetsi eIGBTs ane silicon), zvichideredza zvakanyanya kusimba kwePCB uye huremu.
Mubvunzo wechitanhatu: Ndezvipi zvinodiwa zvitsva zvinoitwa nehigh switching frequency paDC-Link capacitors?
A: Kuderedza ESR kunodiwa kuderedza kurasikirwa kwekuchinja, frequency yakakwira ye resonant inodiwa kudzvinyirira ripple yepamusoro-frequency, uye kugona kuri nani kwe dv/dt kunodiwawo.
Mubvunzo wechinomwe: Kuvimbika kwehupenyu hwema capacitor efirimu kunoongororwa sei?
A: Zvinoenderana nekugadzikana kwekupisa kwezvinhu (semuenzaniso, polypropylene film) uye dhizaini yekuparadza kupisa. Semuenzaniso, YMIN MDP series inovandudza hupenyu hwese pakupisa kwakanyanya nekuvandudza chimiro chekuparadza kupisa.
Mubvunzo wechisere: ESR yemacapacitor efirimu inokanganisa sei kushanda zvakanaka kwesystem?
A: ESR yakaderera inoderedza kurasikirwa kwesimba panguva yekuchinja, inoderedza kushushikana kwemagetsi, uye inovandudza zvakananga kushanda zvakanaka kweinverter.
Mubvunzo 9: Sei ma capacitor efirimu akakodzera zvakanyanya nzvimbo dzemotokari dzinodedera zvakanyanya?
A: Maumbirwo avo esimba, asina electrolyte yemvura, anopa simba rekudzivirira kutenderera kwepamusoro kana tichienzanisa nema capacitor emagetsi, uye kuiswa kwavo kusina polarity kunoita kuti vagone kuchinjika.
Mubvunzo 10: Ndeipi mwero wekupinda kwema capacitor efirimu mumagetsi anofambisa ma inverter?
A: Muna 2022, kugona kwekuisa ma inverters ane capacitor yefirimu kwakasvika mamiriyoni 5.1117, zvichiita 88.7% yehuwandu hwese hwemagetsi ekutonga masisitimu hwakaiswa. Makambani anotungamira akadai seTesla neNidec aive ne82.9%.
Mubvunzo 11: Sei ma capacitor efirimu achishandiswawo muma inverters e photovoltaic?
A: Zvinodiwa kuti mota dzigare kwenguva refu uye dzigare kwenguva refu zvakafanana nezviri mumotokari, uye dzinofanirawo kutsungirira kushanduka-shanduka kwekushisa kwekunze.
Mubvunzo 12: MDP series inotarisa sei matambudziko ekumanikidzwa kwemagetsi muSiC circuits?
A: Dhizaini yayo yeESR yakaderera inoderedza kushanduka kwemagetsi zvakanyanya, inovandudza kutsungirira kwedv/dt ne30%, uye inoderedza njodzi yekuputsika kwemagetsi.
Mubvunzo 13: Nhevedzano iyi inoshanda sei pakupisa kwakanyanya?
A: Tichishandisa zvinhu zvinogara kwenguva refu uye chimiro chinoshanda chekuparadza kupisa, tinovimbisa kuti simba rekuora rinosvika pasi pe5% pa125°C.
Mubvunzo 14: MDP series inoita sei kuti zvinhu zviite sezvidiki?
A: Tekinoroji itsva yefirimu diki inowedzera kugona kwemagetsi pahuwandu hweyuniti, zvichiita kuti simba riwedzere kupfuura avhareji yeindasitiri, zvichiita kuti magadzirirwo emadhiraivha emagetsi akabatana awedzere.
Mubvunzo 15: Mutengo wekutanga wemacapacitor efirimu wakakwira kupfuura wemacapacitor emagetsi. Anopa mukana wemutengo kupfuura hupenyu hwese here?
A: Ehe. Macapacitor emafirimu anogona kugara kwenguva yakareba mota isina kutsiva, nepo macapacitor emagetsi achida kugadziriswa nguva nenguva. Nekufamba kwenguva, macapacitor emafirimu anopa mari shoma.
Nguva yekutumira: Gumiguru-14-2025