I roto i ngā pūnaha photovoltaic pūngao hou, ko te kaitahuri rokiroki hiko (PCS) te pokapū matua mō te hurihanga pai o te mana DC photovoltaic ki te mana AC whatunga. Ko ngā pūnga kiriata YMIN, me ō rātou ātete ngaohiko teitei, te iti o te mate, me te roa o te ora, he wāhanga matua mō te whakarei ake i te mahi a ngā kaitahuri PCS photovoltaic, e āwhina ana i ngā tipu hiko photovoltaic ki te whakatutuki i te hurihanga pūngao pai me te putanga pumau. Ko ā rātou mahi matua me ngā painga hangarau e whai ake nei:
1. "Paruru Whakapūmau Ngaohiko" mō te Hononga-DC
I te wā o te tukanga whakawhiti AC-DC i roto i ngā inverters PCS photovoltaic, ka pāngia te pahi DC (DC-Link) e ngā iahiko pāorooro teitei me ngā pikinga ngaohiko. Ka whakaratohia e ngā pūnga kiriata YMIN ēnei painga mā te:
• Te mimiti i ngā ngaohiko teitei: Ahakoa te kaha ki te tu atu i ngā ngaohiko teitei o te 500V ki te 1500V (ka taea te whakarite), ka mimitihia e rātou ngā pikinga ngaohiko rangitahi i hangaia e ngā pana IGBT/SiC, hei tiaki i ngā taputapu hiko mai i ngā mōrearea pakaru.
• Te Whakangawari i te Iahiko ESR Iti: Ka mimiti pai te ESR iti (1/10 o ngā pūnga hiko konumohe tuku iho) i te iahiko ripple auau-tiketike i runga i te DC-Link, ka whakaiti i te ngaronga pūngao me te whakapai ake i te pai o te hurihanga mana.
• Pūnaha Rokiroki Pūngao Kaha-Teitei: Mā te whānuitanga o te kaha ka taea te utu me te tuku tere i te wā e piki haere ana te ngaohiko whatunga, e pupuri ana i te pumau o te ngaohiko pahi DC me te whakarite kia mahi tonu te PCS.
2. Te Parenga Takirua o te Ātete Ngaohiko Teitei me te Pūmautanga o te Pāmahana
He maha ngā wā ka pāngia ngā teihana hiko PV e ngā taiao uaua pērā i te pāmahana teitei me te haumākū teitei. Ka tutuki i ngā pūnga kiriata YMIN ēnei wero mā roto i ngā hoahoa auaha:
• Mahi Pūmau i runga i te Awhe Pāmahana Whānui: Ka kapi ngā pāmahana whakahaere i te -40°C ki te 105°C, me te tere whakahekenga kaha iti iho i te 5% i roto i ngā taiao pāmahana teitei, ka ārai i te wā whakaweto o te pūnaha nā te piki me te heke o te pāmahana.
• Te Pūngao o te Ia Riri: Neke atu i te 10 ngā wā o te kaha whakahaere o te ia riri i tō ngā pūngao hiko tuku iho, e tātari ana i te haruru harmonic i te putanga PV, ā, e whakarite ana kia tutuki te kounga o te hiko e hono ana ki te whatunga i ngā paerewa ā-motu.
• He roa te ora, ā, kāore he tiaki: Me te roanga o te ora tae atu ki te 100,000 hāora, he nui atu i te 30,000-50,000 hāora o ngā pūnga hiko konumohe, ka whakaitihia ngā utu whakahaere me te tiaki o ngā tipu hiko photovoltaic.
3. Te Mahi Tahi me ngā Pūrere SiC/IGBT
I te whanaketanga o ngā pūnaha photovoltaic ki ngā ngaohiko teitei ake (ko ngā hoahoa 1500V kei te rongonui haere), he tino hototahi ngā pūnga kiriata-angiangi YMIN ki ngā semiconductors hiko o te whakatupuranga e whai ake nei:
• Tautoko Whakawhiti Auau-Teitei: Ka rite te hoahoa iti-whakaoho ki ngā āhuatanga auau-teitei o ngā SiC MOSFET (auau whakawhiti > 20kHz), ka whakaiti i te maha o ngā wāhanga kore mahi, ā, ka whai wāhi ki te whakaitiiti i ngā pūnaha PCS (e 8 noa iho ngā pūnga iahiko e hiahiatia ana mō te pūnaha 40kW, ki te whakaritea ki te 22 mō ngā otinga e hangai ana ki te silicon).
• Whakapai ake i te awhi i te dv/dt: Te whakarei ake i te urutau ki ngā huringa ngaohiko, te ārai i ngā wiri ngaohiko i puta mai i ngā tere whakawhiti nui rawa i roto i ngā taputapu SiC.
4. Uara Taumata-Pūnaha: Te Whakapai Ake i te Whai Hua o te Pūngao me te Arotautanga Utu
• Whakapai Ake i te Whai Hua: Ka whakaitihia te ngaronga wera e te hoahoa iti o te ESR, ka whakanuia te whai huatanga o te PCS whānui, ā, ka tino whakapiki ake i te whakaputanga pūngao ā-tau.
• Penapena Wāhi: Ka tautoko te hoahoa kiato mana teitei (40% te iti iho i ngā pūnga tuku iho) i te tahora taputapu PCS kiato, ā, ka whakaiti i ngā utu tāutanga.
Whakamutunga
Ko ngā pūnga kiriata YMIN, me ō rātou painga matua o te manawanui hiko teitei, te pikinga pāmahana iti, me te kore tiaki, kua whakauruhia hohonu ki roto i ngā āhuatanga matua o ngā kaitahuri PCS photovoltaic, tae atu ki te aukati DC-Link, te tiaki IGBT, me te tātari harmonic whatunga. Ka mahi rātou hei "kaitiaki ngaro" o te mahi whai hua me te pumau i roto i ngā tipu hiko photovoltaic. Ehara i te mea ko tā rātou hangarau anake e akiaki ana i ngā pūnaha rokiroki hiko photovoltaic ki te "kore tiaki puta noa i tō rātou huringa ora," engari ka āwhina hoki i te umanga hiko hou ki te whakatere i te whakatutukitanga o te ōritetanga whatunga me te whakawhiti kore-waro.
Wā tuku: 14 o Ākuhata 2025