He aha tePūngao Snubber?

I roto i ngā pūnaha hiko me ngā pūnaha hiko hou, he mahi nui tā ngā taputapu whakawhiti pēnei i ngā transistors, thyristors (SCR), IGBTs, me ngā relays. Heoi, he maha ngā wā ka pāngia ēnei taputapu e ngā pikinga ngaohiko me ngā huringa ohorere o te iahiko nā ngā kawenga whakauru, ka arahi pea ki te kino, ki te hapa mahi, me te pokanoa hikohiko kore e hiahiatia (EMI). Koinei te wāhi engā pūnga hiko snubberuru mai ki te tākaro.

Te Mārama ki ngā Pūnga Snubber

A pūnga hiko snubberHe pūnga motuhake te pūnga e whakamahia ana i roto i ngā ara iahiko snubber hei tiaki i ngā taputapu whakawhiti mai i ngā pikinga ngaohiko me ngā iahiko whakawhiti. Mā te whakarato i tētahi ara rerekē rangitahi mō te iahiko, ka āwhina ngā pūnga snubber ki te whakaiti i te ahotea i runga i ngā wāhanga whakawhiti, te whakanui ake i tō rātou roa, me te whakapai ake i te pono o te ara iahiko.

He aha i hiahiatia ai ngā ara iahiko Snubber?

E whakamahia ana ngā ara iahiko Snubber i roto i ngā momo mahi, tae atu ki:

• Ngā ara iahiko tuku hiko– hei pehi i ngā pikinga ngaohiko.
• Ngā ara iahiko whakawhiti me ngā ara iahiko whakapā– hei whakaiti i te hanganga pewa puta noa i ngā hoapā.
• Ngā pana hiko hiko (SCR, IGBT, GTO, me ētahi atu)– hei whakawhāiti i te pikinga ngaohiko (dV/dt) me te ngaru o ia au (di/dt), hei ārai i te whakaoho rūpahu me te rahunga o te taputapu.

Me pēhea te mahi a ngā porowhita Snubber?

Ko ngā ara iahiko Snubber he mea hanga i tētahi pūnga, i tētahi rāneiwhatunga ātete-pūnga (RC)whakanohoia ki runga i tētahi taputapu whakawhiti.

• Te Whakaiti i te Pūngao Ngaohiko:Ina whakawetohia te SCR, te transistor rānei, ka puta he pikinga ngaohiko teitei mai i te kawenga whakaawe. Ka mimitihia tēnei pūngao e te pūnga snubber, ka ārai i te ahotea ngaohiko nui rawa.
• Mana whakahaere dV/dt:Ka whakaroa te pūnga hiko i te tere o te pikinga o te ngaohiko puta noa i te pana, kia kore ai e puta he tahuritanga kāore i te tūmanakohia (he whakaoho teka) i roto i ngā thyristor me ētahi atu haurua-ira.
• Mana di/dt:Mā te tāpiri raupapa i tētahi ātete me te pūnga ka whakawhāiti i te ia tomo mai ina tahuri te pana, ka ārai i te ahotea nui ki runga i te wāhanga.

Ngā Āhuatanga Matua o ngā Pūnga Snubber

Kua hangaia ngā pūnga hiko Snubber hei whakahaere i ngā iahiko auau-tiketike me ngā pāorooro auau. Ko ō rātou āhuatanga matua ko:

• Te auau whakahaere teitei e whakaaetia ana (100 kHz, neke atu rānei).
• He iti te whakamahana-ā-roto me te iti o te ngaronga.
• He iti te ātete raupapa ōrite (ESR) mō te mimiti pūngao whai hua.
• He nui te kaha o te iahiko me te mana mō te whakahaere i ngā kawenga tauwhiro.

Ngā momo pūnga Snubber

He rerekē ngā momo pūnga hiko o ngā pūnga hiko Snubber i runga i ngā taumata mana me ngā whakaritenga tono:

• Ngā Pūngao Uku– He pai mō ngā tono iti-mana.
• Ngā Pūnga Kiriata Kirihou– E whakamahia ana i roto i ngā ara iahiko mana-tiketike, tae atu ki ngā pūnaha waka hiko (EV) me ngā mana whakahaere motuka.
• Ngā Pūngao Polypropylene Whakarewa (MPP)– I hangaia mō ngā tono auau-tiketike, iahiko-tiketike me te iti o te hiko whakaawe.

Te Kōwhiri i te Pūnga Snubber Tika

Ko te kōwhiringa o te pūnga snubber e whakawhirinaki ana ki ngā āhuatanga pēnei i:

• Uara āheinga:Ko te tikanga kei waenganui i0.1µF ki te 10µF, i runga i te pūrere whakawhiti me te hiko kawenga.
• Whakatauranga ngaohiko:Me teitei ake i te ngaohiko tihi o te ara iahiko.
• ESR me te whakatauranga o nāianei:Me iti te iti hei whakahaere i ngā ia ngaru me te kore e nui rawa te wera.

Kei hea ngā Pūnga Snubber e whakamahia ana?

Kei roto i ngā ahumahi me ngā tono maha ngā pūnga hiko Snubber, pērā i:

• Ngā waeine tuku hiko (PSU)
• Ngā waka hiko (EV) me ngā ara iahiko whakahaere motuka
• Ngā pūnaha aunoatanga ahumahi
• Ngā pūnaha pūngao whakahou (ngā pūngao hiko o te rā, ngā tāpoi hau)

Whakamutunga

He mea nui te mahi a ngā pūnga hiko Snubber ki te tiaki i ngā taputapu whakawhiti mai i ngā pikinga hiko, te whakahaere i ngā iahiko whakawhiti, me te whakarei ake i te mahi whānui o te ara iahiko. I te haere tonu o te whanaketanga o ngā hikohiko mana, ka piki haere tonu te hiahia mō ngā pūnga hiko snubber whai hua me te pono. Ahakoa i roto i ngā puna hiko, i te aunoatanga ahumahi, i ngā waka hiko rānei, ka āwhina ēnei pūnga hiko ki te whakarite kia maeneene, kia pumau hoki te mahi i roto i ngā ara iahiko mana-teitei.