Ka nui ake te auau whakawhiti o te whakawhiti hiko, ka iti ake tōna rōrahi. Nō reira, ko te tikanga kāore he rohenga o runga mō te auau whakawhiti? Nō reira, ka taea te tino iti te rōrahi?
Kāore te whakautu. I roto i te tukanga mahi tuturu, ka whakatauhia te auau o ngā whakawhiti auau-tiketike e ngā āhuatanga maha, ā, ka taea te wehewehe ki ētahi āhuatanga:
1, Te āhua o te ara iahiko, te āhua o te rere whakamuri: He mahi a ngā whakawhiti hiko hei penapena me te whakawhiti hiko, ā, ko te auau mahi e whakamahia whānuitia ana ko te 40-100kHz. Ina iti iho te auau i te 40kHz, he nui rawa te rōrahi o te matua rino, ka nui ake te rōrahi o te tuku hiko; Ina neke atu te auau i te 100kHz, ka kino pea te transistor whakawhiti i ngā pikinga ngaohiko nā te turuturu o te hiko.
Te āhuarangi whakamua: Ko te whānuitanga noa ko te 60-150kHz, engari me whakataurite ngā ngaronga matua aukume me ngā ngaronga pana. Te āhuarangi pana tō/haurua piriti/piriti katoa: He matua aukume aukume rua-aronga e peia ana e te pana ōrite, he pai ake te mahi, e tautoko ana i ngā auau teitei ake mai i ngā rau kHz ki MHz, engari me hiahia he hoahoa whakahaere uaua ake me te marara wera.
2. Ko ngā āhuatanga o ngā rauemi matua aukume ko te ngaronga hysteresis aukume me te ngaronga iahiko hurihuri. I roto i tētahi whānuitanga, ka piki ake te ngaronga matua aukume me te pikinga o te auau. Nō reira, me rerekē ngā whānuitanga whakamahinga auau o ngā rauemi matua aukume kia iti ake ai ngā ngaronga matua aukume. Hei tauira, he pai te whakamahi i te manganese zinc ferrite i ngā auau mai i te 10 ki te 300kHz, ko te nickel zinc ferrite ia he pai mō ngā auau neke atu i te 1MHz.
Tuarua, i te pikinga ake o te auau, me whakaiti te kaha o te aukume mōrahi kia kore ai e mākū te matua aukume. Hei tauira, ko te kaha o te aukume o te DMR40 he 0.38T, ā, i te wā e hoahoa ana i te auau o te 100KHz, ka tangohia he uara tata ki te 0.2T.
3, Ko te tere whakawhiti o te taputapu hiko MOS transistors he taputapu unipolar, me te wā whakaweto i roto i ngā nanohekona. Ka taea e te auau whakahaere ariā te eke ki te MHz, ā, ko te auau whakahaere mōrahi tūturu he rau KHz. Ko te IGBT he taputapu bipolar, me te wā whakaweto roa, ā, ko te auau whakahaere mōrahi i waenga i te 40~50KHz.
4, Ko te pikinga ake o te whai huatanga me te auau o te marara wera ka hua ake he pikinga ake o ngā ngaronga pana me te puku, ka hua ake he hekenga o te whai huatanga whānui me te pikinga ake o te whakaputa wera. Hei whakarite kia noho te pāmahana o te hua i roto i te awhe noa, me nui ake ngā mahi hei whakatau i te marara wera.
5、 I ngā auau teitei, ka piki ake te utu nā te pikinga o ngā mate o te pana, ka hiahiatia he mahi hei whakahaere i te wera e marara ana, ka piki ake ngā utu. Tuarua, he maha ngā wā ka heke te mahi a ngā pūnga me ngā inductors i ngā auau teitei, ā, me whiriwhiri tātou i ngā taputapu e tika ana mō ngā auau teitei ake, ka piki ake ngā utu. I roto i te hoahoa mahi, he iti ngā utu, ā, he maha ngā wā ka whakatau i te rohe o runga o te auau whakahaere.
6, Ngā āhuatanga o te maramara: He maha ngā wā ka hiahiatia e ngā maramara whakahaere PWM he rohenga teitei o te auau hei urupare ki ngā whakarerekētanga kawenga hihiri. Mā tēnei ka whakatau hoki kei roto i tētahi awhe te auau whakawhiti o te whakawhiti hiko.
Wā tuku: Akuhata-06-2025
