Ko te Polarity Reversing Rectifier (PRR) he taputapu tuku hiko DC ka taea te whakawhiti i te polarity o tana putanga. Nā tēnei ka tino whai hua i roto i ngā tukanga pēnei i te electroplating, te electrolysis, te aukati hikohiko, me te whakahaere motuka DC, ina hiahiatia te whakarerekē i te ahunga o te iahiko.
1. Te Mahi a te Tangata
Ka hurihia e ngā whakatikatika noa te AC ki te DC me te polarity pumau. Ka hangaia e ngā PRR tēnei mā te whakamahi i ngā taputapu hiko ka taea te whakahaere—pērā i ngā thyristors, IGBTs, MOSFETs rānei—hei huri i te rere o te iahiko. Mā te whakarerekē i te koki pupuhi, i te raupapa whakawhiti rānei, ka taea e te taputapu te huri maeneene, te huri tere rānei i te putanga mai i te pai ki te kino.
2. Hanganga Porowhita
I te nuinga o te wā, ka whakamahia e te PRR tētahi whakatikatika piriti e whakahaeretia katoatia ana:
Tāuru AC → Piriti Whakatikatika Whakahaere → Tātari → Utaina
E whā ngā wāhanga whakahaere o te piriti. Mā te whakahaere i ngā taputapu e whakahaere ana me te wā e whakahaerehia ai, ka taea e te putanga te whakawhiti i waenga i:
▪ Te pōraritanga pai: ka rere te iahiko mai i te pito pai ki te kawenga.
▪ Te pōraruraru kino: ka rere te iahiko i te taha ke.
Ka taea hoki te whakarite i ngā taumata ngaohiko mā te huri i te koki whakaoho (α), e āhei ai te whakahaere tika i te polarity me te rahi.
3. Ngā tono
(1)Te Whakakikorua me te Whakamahinga Hiko
Me huri te iahiko i ia wā, i ia wā, hei whakapai ake i te kounga o te paninga. Ka tukuna e ngā PRR he pūnga hiko DC e rua ngā taha, ka taea te whakahaere hei whakatutuki i tēnei whakaritenga.
(2) Mana Whakahaere Mōta DC
Whakamahia mō te mahi whakamua/whakamuri me te aukati whakaora, hei whakahoki i te pūngao ki te pūnaha.
(3) Te Pēki Hikohiko
Mā te whakahuri i te iahiko ka taea te aukati tere, te tukunga whakahaere rānei o ngā pūnaha miihini.
(4) Taiwhanga me te Whakamātautau
Ka whakaratohia e ngā PRR he putanga DC bipolar ka taea te whakarite, he mea tino pai mō te rangahau, te whakamātautau, me ngā whakamātautau e hiahia ana ki te polarity ngāwari.
Kei te piki haere te hiranga o ngā whakatikatika whakahuri-polarity i roto i te ahumahi me te rangahau. Ka whakakotahihia e rātou te whakahaere polarity ngāwari me te huringa pūngao whai hua, ka waiho hei mea nui mō ngā tono hikohiko mana hou. I te whakapai ake i te hangarau taputapu me te whakahaere, e tika ana kia whānui ake te whakamahinga o ngā PRR.
Wā tuku: Oketopa-17-2025
