I nā makahiki i hala iho nei, ʻo ka hoʻomohala nui ʻana o nā ʻoihana ikehu hou e like me ka mālama ʻana i ka photovoltaic a me nā kaʻa uila (EV) ua alakaʻi i ka piʻi nui ʻana o ke koi no nā capacitors DC-Link. I ka pōkole, he kuleana koʻikoʻi nā capacitors DC-Link i ke kaapuni. Hiki iā lākou ke omo i nā au pulse kiʻekiʻe ma ka hopena kaʻa a hoʻomaʻamaʻa i ka voltage kaʻa, e hōʻoia ana ua pale ʻia nā kuapo IGBT a me SiC MOSFET mai nā hopena maikaʻi ʻole o nā au pulse kiʻekiʻe a me nā voltages transient i ka wā o ka hana.
I ka piʻi ʻana o ke kaʻa uila o nā kaʻa ikehu hou mai 400V a i 800V, ua piʻi nui ke koi no nā capacitors kiʻiʻoniʻoni. Wahi a ka ʻikepili, ua hōʻea ka mana i hoʻokomo ʻia o nā inverters hoʻokele uila e pili ana i nā capacitors kiʻiʻoniʻoni lahilahi DC-Link i 5.1117 miliona mau seti i ka makahiki 2022, e helu ana i 88.7% o ka mana i hoʻokomo ʻia o ka mana uila. Hoʻohana nā inverters hoʻokele o nā ʻoihana hoʻokele uila alakaʻi he nui e like me Tesla lāua ʻo Nidec i nā capacitors kiʻiʻoniʻoni DC-Link, nona ka helu no 82.9% o ka mana i hoʻokomo ʻia a ua lilo i koho nui ma ka mākeke hoʻokele uila.
Hōʻike nā pepa noiʻi i loko o nā inverters half-bridge silicon IGBT, hoʻohana pinepine ʻia nā capacitors electrolytic kuʻuna i ka loulou DC, akā e loaʻa nā piʻi voltage ma muli o ke kiʻekiʻe o ka ESR o nā capacitors electrolytic. Ke hoʻohālikelike ʻia me nā hoʻonā IGBT e pili ana i ka silicon, ʻoi aku ka kiʻekiʻe o ke alapine hoʻololi ʻana o SiC MOSFET, no laila ʻoi aku ke kiʻekiʻe o ka amplitude surge voltage i ka loulou DC o ka inverter half-bridge, hiki ke hōʻino i ka hana o ka hāmeʻa a i ʻole ka hōʻino ʻana, a ʻo ke alapine resonant o nā capacitors electrolytic he 4kHz wale nō, ʻaʻole lawa ia e omo i ka ripple o kēia manawa o nā inverters SiC MOSFET.
No laila, ma nā noi DC e like me nā inverters hoʻokele uila a me nā inverters photovoltaic me nā koi hilinaʻi kiʻekiʻe.nā capacitors kiʻiʻoniʻoniʻo ka mea maʻamau i koho ʻia. Ke hoʻohālikelike ʻia me nā capacitors electrolytic alumini, ʻo kā lākou mau pono hana he kiʻekiʻe ke kū'ē ʻana o ka voltage, haʻahaʻa ESR, non-polarity, hana paʻa, a me ke ola lōʻihi, no laila e hoʻokō ana i ke kū'ē ripple ikaika a me ka hoʻolālā ʻōnaehana hilinaʻi.
Hiki i nā ʻōnaehana e hoʻohana ana i nā capacitors ʻili lahilahi ke hoʻohana pono i ke alapine kiʻekiʻe a me ka pohō haʻahaʻa o nā SiC MOSFET a hōʻemi i ka nui a me ke kaumaha o nā ʻāpana passive. Hōʻike ka noiʻi Wolfspeed e pono ana kahi inverter IGBT 10kW silicon-based i 22 mau capacitors electrolytic alumini, ʻoiai ʻo kahi inverter 40kW SiC e pono wale i 8 mau capacitors ʻili lahilahi, a ua hoʻemi nui ʻia hoʻi ka wahi PCB.
I ka pane ʻana i ke koi o ka mākeke, ua hoʻolauna ʻo YMIN Electronics i kaNā capacitors kiʻiʻoniʻoni MDP, e hoʻohana ana i ka ʻenehana holomua a me nā mea kiʻekiʻe e hoʻololi i ka SiC MOSFET a me ka IGBT e pili ana i ka silicon. Loaʻa i nā capacitors moʻo MDP ka ESR haʻahaʻa, ke ana kū kiʻekiʻe, ke au leaka haʻahaʻa a me ke kūpaʻa wela kiʻekiʻe.
Nā Pōmaikaʻi o nā huahana capacitor kiʻiʻoniʻoni a YMIN Electronics:
Hoʻohana ka hoʻolālā capacitor kiʻiʻoniʻoni a YMIN Electronics i ka manaʻo ESR haʻahaʻa e hōʻemi i ke kaumaha voltage a me ka nalowale ikehu i ka wā o ka hoʻololi ʻana a hoʻomaikaʻi i ka pono o ka ikehu o ka ʻōnaehana. Loaʻa iā ia kahi voltage kiʻekiʻe, hoʻololi i nā wahi voltage kiʻekiʻe, a hōʻoia i ke kūpaʻa o ka ʻōnaehana.
Loaʻa i nā capacitors moʻo MDP kahi laulā mana o 1uF-500uF a me kahi laulā voltage o 500V a 1500V. Loaʻa iā lākou ke au leaka haʻahaʻa a me ke kūpaʻa wela kiʻekiʻe. Ma o nā mea kiʻekiʻe a me nā kaʻina hana holomua, ua hoʻolālā ʻia kahi ʻano hoʻoheheʻe wela kūpono e hōʻoia i ka hana paʻa i nā mahana kiʻekiʻe, hoʻolōʻihi i ke ola lawelawe, a hāʻawi i ke kākoʻo hilinaʻi no nā ʻōnaehana uila mana. I ka manawa like, ʻo kaNā capacitors moʻo MDPhe liʻiliʻi ka nui, kiʻekiʻe ka mana o ka mana, a hoʻohana i nā kaʻina hana hana ʻoniʻoni lahilahi hou e hoʻomaikaʻi i ka hoʻohui ʻana o ka ʻōnaehana a me ka pono, hoʻemi i ka nui a me ke kaumaha, a hoʻonui i ka lawe ʻana i nā lako a me ka maʻalahi.
Loaʻa i ka YMIN Electronics DC-Link film capacitor series kahi hoʻomaikaʻi 30% i ka hoʻomanawanui dv/dt a me ka hoʻonui ʻana o 30% i ke ola lawelawe, kahi e hoʻomaikaʻi ai i ka hilinaʻi o nā kaapuni SiC/IGBT, lawe mai i ka maikaʻi o ke kumukūʻai, a hoʻoponopono i ka pilikia kumukūʻai.
Ka manawa hoʻouna: Ian-10-2025