1. Tirohanga o te Whakawhiti Power Supply
Te whakawhiti hikohe taputapu whakawhiti hiko hiko teitei, e mohiotia ana ko te whakawhiti hiko, te whakawhiti hiko ranei. Ka huri i te ngaohiko whakauru ki roto i te tohu pupuhi tere-tere na roto i te ngongo whakawhiti tere, katahi ka huri i te hiko mai i tetahi ahua ki tetahi atu ma te tukatuka ohurihanga, ara iahiko whakatika me te ara iahiko tātari, ka mutu ka whiwhi i te ngaohiko DC ripple iti mo te tuku hiko.
Ko te whakawhiti i te mana hiko he painga o te kaha teitei, te pai o te pumau, te iti o te rahi, te taumaha marama, te pono nui, a ka taea te urutau ki nga hiahia hiko taputapu rereke.
Ko te whakawhiti hiko kua whakamahia nuitia i roto i nga momo mara, tae atu ki te aunoatanga ahumahi, te whakawhitiwhiti korero me te kaha hou. I roto i te waahi o te ahumahi ahumahi, ko te whakawhiti i te mana hiko e whakarato ana i te tautoko kaha mo nga momo taputapu automation hei whakarite i te mahi pai me te pumau o nga taputapu.
I roto i te waahi o te whakawhitiwhiti korero, ko te whakawhiti i te mana hiko e whakamahia nuitia ana i roto i te teihana turanga ahokore, nga taputapu whatunga, me etahi atu, hei whakarite i te pumau o te tuku tohu o te punaha korero me te whakapai ake i te kounga korero. I roto i te waahi o te kaha hou, ko te whakawhiti hiko he mahi nui i roto i nga punaha hiko o te ra me te hau, e awhina ana i te whakamahi pai o te kaha whakahou.
E wha nga waahanga matua o te whakawhiti hiko hiko: ara iahiko whakauru, kaitahuri, ara iahiko whakahaere, me te ara iahiko whakaputa. Ko nga mea e whai ake nei he hoahoa poraka aahua hiko whakawhiti hiko, he mea nui kia mohio tatou ki te tuku hiko whakawhiti.
2. Te whakarōpūtanga o nga taputapu hiko whakawhiti
Ka taea te whakarōpūhia nga taputapu hiko whakawhiti kia rite ki nga paerewa whakarōpūtanga rereke. He maha nga tikanga whakarōpū noa e whai ake nei:
1. Te whakarōpū ma te momo mana whakauru:
AC-DC whakawhiti hiko hiko: ka huri te mana AC ki te hiko DC.
Whakawhiti hiko DC-DC: ka huri te hiko DC ki tetahi atu ngaohiko DC.
2. Whakarōpū ma te aratau mahi:
Tukunga hiko whakawhiti kotahi-mutunga: kotahi noa te ngongo whakawhiti, e tika ana mo nga tono iti-hiko.
Ko te tuku hiko whakawhiti-rua: e rua nga ngongo whakawhiti, e tika ana mo nga tono hiko teitei.
3. Whakarōpū mā te topology:
E ai ki te topology, ka taea te wehewehe ki roto i te Buck, Boost, Buck-Boost, Flyback, Forward, Two-Transistor Forward, Push-Pull, Half Bridge, Full Bridge, etc. Ko enei tikanga whakarōpūtanga he waahanga noa iho. Ka taea hoki te whakarōpūhia nga taputapu hiko whakawhiti kia rite ki etahi atu whakaritenga me nga tono.
I muri mai, ka whakauruhia e matou te Flyback me te Whakamua. Ko te Whakamua me te Whakamuri e rua nga momo hangarau whakawhiti hiko. Ko te tuku hiko whakawhiti whakamua e pa ana ki te tuku hiko whakawhiti e whakamahi ana i te whakawhiti hiko tere whakamua ki te wehe i te kaha honoa, a ko te tuku hiko whakawhiti whakamuri e rite ana ko te tuku hiko whakawhiti rere.
2.1 Whakawhiti whakamua te tuku hiko
Ko te tuku hiko whakawhiti whakamua i roto i te hanganga he uaua ake, engari he tino tiketike te mana whakaputa, e tika ana mo te 100W-300W te whakawhiti hiko hiko, i te nuinga o te waa e whakamahia ana i roto i te iti-ngaohiko, te kaha o te hiko o naianei, he nui ake te whakamahi.
E whakaatu ana i te ahua i raro nei, mo te tuku hiko whakawhiti whakamua inaa ka ka ana te ngongo whakawhiti, ka mahi te kaihuri whakaputa hei reo hono tika ki te kaha o te papa aukume, te hiko hiko me te kaha autō ka huri ki a raua ano, na te te whakauru me te whakaputa i te wa ano.
He ngoikoretanga ano kei roto i te tono o ia ra: penei i te hiahia ki te whakanui ake i te awhiowhio whakamuri (ki te aukati i te hurihanga tuatahi i hangaia e te kaha whakamuri ki te pakaru o te ngongo whakawhiti), te tuarua neke atu i te kotahi inductor mo te tātari rokiroki pūngao, na. ka whakatauritea ki te hiko whakawhiti hiko, he nui ake te utu, he nui ake te rahi o te riipene whakawhiti hiko whakawhiti whakamua atu i te rōrahi o te whakawhiti hiko whakawhiti hiko.
Whakawhiti whakamua hiko tuku
2.2 Flyback whakawhiti hiko supply
E whakaatu ana i te ahua i raro nei, ko te tuku hiko whakawhiti rererangi e tohu ana ki te tuku hiko whakahuri e whakamahi ana i te whakawhiti hiko teitei rere hoki ki te wehe i nga iahiko whakauru me te whakaputa. Ko tana kaihurihuri ehara i te mahi huri noa i te ngaohiko ki te tuku i te kaha, engari ka mahi ano hoki i te mahi o te inductor rokiroki hiko. No reira, he rite tonu te kaitahuri rererangi ki te hoahoa o te inductor. He ngawari noa nga iahiko katoa me te ngawari ki te whakahaere. Ka whakamahia nuitia te Flyback ki nga tono mana iti o te 5W-100W.
Mo te tuku hiko whakawhiti rererangi, ka huri te ngongo whakawhiti, ka piki te ia o te inductor tuatahi o te whakawhiti. I te mea ko te porowhita whakaputa o te ara iahiko flyback he pito rereke, ka whakawetohia te diode whakaputa, ka penapena te kaha o te kaihurihuri, ka whakawhiwhia te kawenga ki te kaha e te puritanga whakaputa. Ka whakawetohia te ngongo whakawhiti, ka huri te ngaohiko arataki o te inductor tuatahi o te kaihurihuri. I tenei wa, ka huri te diode whakaputa, ka tukuna te kaha o te kaitahuri ki te utaina na roto i te diode, i te wa e utuhia ana te capacitor.
Tuku hiko whakawhiti Flyback
Mai i te whakatairite, ka kitea ko te kaitahuri o te whakakorikori whakamua anake te mahi o te kaitahuri, a ka taea te kii te katoa he ara iahiko kuao me te huringa. Ka taea te kii te hurihanga Flyback hei inductor me te mahi whakawhiti, he ara iahiko-whakanui. I te nuinga o te waa, he rereke te maapono mahi rere whakamua, ko mua ko te mahi tuarua mahi tuatahi, kaore te tuarua e mahi me te inductor o naianei ki te whakahou i te waa, te tikanga CCM.
Ko te take hiko i te nuinga o te waa kaore i te teitei, a ko te whakauru me te whakaputanga me te huringa mahi taurangi he riterite. Ko te Flyback te mahi tuatahi, ko te tuarua kaore e mahi, ko nga taha e rua takitahi, ko te tikanga DCM te tikanga, engari ko te inductance o te huringa ka iti noa, me te hiahia ki te taapiri i te hau hau, na te nuinga o te waa e tika ana mo te mana iti me te reo.
He pai te whakawhiti whakamua, karekau he rokiroki hiko, engari na te mea he uara mutunga te inductance whakakorikori, na te naianei whakaihiihi ka nui te matua, kia kore ai te haunga o te rere, ka hiahia te kaihurihuri ki te awhiowhio awhina mo te whakahou i te rere.
Ka taea te kite i te kaihurihuri Flyback hei ahua o te whakaurunga hono, te inductance tuatahi ki te rokiroki pūngao, katahi ka tukuna, na te whakaurunga me nga ngaohiko whakaputa a te kaihurihuri i te ritenga atu o te polarity, na ka momotu te ngongo whakawhiti, ka taea e te tuarua te whakarato i tematua autōme te ngaohiko tautuhi, no reira karekau e hiahiatia e te kaitahuri flyback ki te taapiri i etahi atu awhiowhio.
Te wa tuku: Sep-29-2024