Ngā āhuatanga me ngā painga o ngā motuka auau rerekē

Ko te whakahaere tere hurihanga auau e pā ana ki tētahi pūnaha hikohiko pēnei: ​​ko te motuka whakapūmau whakahaere tere hurihanga auau, te kaitahuri auau, te kaiwhakahaere hōtaka me ētahi atu taputapu atamai, ngā kaiwhakaoho mutunga me ngā pūmanawa whakahaere, me ētahi atu, he pūnaha whakahaere tere AC porowhita-tuwhera, porowhita-kati rānei. Kei te whakakapi tēnei momo pūnaha whakahaere tere i te kaupapa whakahaere tere miihini tuku iho me te whakahaere tere DC i roto i tētahi āhuatanga kāore i kitea i mua, e tino whakapai ake ana i te taumata o te aunoatanga miihini me te whai huatanga o te whakaputa, ā, ka iti haere te iti me te atamai o ngā taputapu.

Ina tirohia te whakapaunga pūngao o ngā motuka katoa i roto i ngā tono ahumahi, tata ki te 70% o ngā motuka e whakamahia ana i roto i ngā kawenga pā me te papu. He mārama ngā painga o te penapena pūngao me te whakaiti i ngā tukunga mō ēnei kawenga: he nui ngā painga ōhanga me ngā pānga pāpori pumau. I runga anō i te kaupapa i runga ake nei, he whānui te whakamahinga o te whakahaere tere o te hurihanga auau motuka AC. Hei tauira, i roto i te hauhautanga inverter, ina whakaitihia te pāmahana i whakatakotoria e te hauhautanga, me whakahaere noa te tere o te motuka hei whakaiti me te whakaiti i te mana taraiwa putanga.

Haunga te penapena pūngao me te ngāwari ki te rongonui me te whakamahi, he painga anō hoki tō ngā motuka kore-tukutahi e whakahaere ana i te tere auau rerekē, arā, he tīmatanga ngawari, ā, kāore he take ki te tirotiro i te mahi tīmatanga. Ko te raru matua anake me whakatau ko: me whakapai ake te urutau o te motuka ki te mana ngaru kore-sine.

Te kaupapa mahi o te kaitahuri auau

Ko te nuinga o te wā, ko te kaitahuri auau e whakamahia ana e mātou ko te aratau AC-DC-AC (te tahuritanga auau VVVF, te tahuritanga auau whakahaere whārite rānei). Tuatahi, ka hurihia te mana AC auau ki te mana DC mā te whakatikatika, kātahi ka hurihia te mana DC ki te mana AC me te auau me te ngaohiko ka taea te whakahaere. Ka tukuna te mana ki te motuka. Ko te ara iahiko o te kaitahuri auau he mea hanga ki ngā wāhanga e whā: te whakatikatika, te hononga DC waenga, te kaitahuri me te mana whakahaere. Ko te wāhanga whakatikatika he whakatikatika piriti-toru-wāhanga kāore e taea te whakahaere, ko te wāhanga kaitahuri he kaitahuri piriti-toru-wāhanga IGBT, ā, ko te putanga he ngaru PWM, ā, ko te hononga DC waenga he mana tātari, he mana rokiroki hiko DC me te mana tauhohenga parepare.

Kua noho te whakahaere auau hei kaupapa whakahaere tere matua, ka taea te whakamahi whānui i roto i te tuku kore-taahiraa i roto i ngā ahumahi maha. Ina koa kua horapa haere te whakamahinga o ngā kaitahuri auau i roto i te mara o te whakahaere ahumahi, kua horapa haere te whakamahinga o ngā motuka tahuri auau. Ka taea te kī nā te hiranga o ngā motuka tahuri auau i roto i te whakahaere tahuri auau i ngā motuka noa, ahakoa kei hea ngā kaitahuri auau e whakamahia ana, ehara i te mea uaua ki te kite i te ahua o te motuka tahuri auau.

Ko te whakamātautau mō te motuka auau rerekē me whakamahi i tētahi kaitahuri auau. Nā te mea he whānuitia ngā rerekētanga o te auau putanga o te kaitahuri auau, ā, he nui ngā harmonika kei roto i te ngaru PWM putanga, kāore e taea e te kaitahuri me te mita hiko tuku iho te whakatutuki i ngā hiahia ine o te whakamātautau. He tātari hiko huringa auau me te tuku hiko huringa auau, me ētahi atu.

Ko te papa whakamātautau motuka paerewa he momo pūnaha whakamātautau hou kua whakarewahia hei mahere whakapai ake i te whai huatanga o te pūngao motuka hei whakautu ki te penapena pūngao me te whakaiti i ngā tukunga. Ka whakatauritea e te papa whakamātautau motuka paerewa te pūnaha uaua, ka whakapai ake i te pono o te pūnaha, ka whakangawari i te tukanga tāutanga me te patuiro, ā, ka whakaiti i te utu o te pūnaha.

Ngā āhuatanga motuhake o te motuka hurihanga auau

Hoahoa piki pāmahana Akomanga B, hanga whakamātao akomanga F. Mā te whakamahi i ngā rauemi whakamātao polymer me te tukanga hanga wanihi kua whakakiia ki te pēhanga korehau me te whakamahi i te hanganga whakamātao motuhake ka tino pai ake te ātete o te whakamātao takai hiko ki te ngaohiko me te kaha miihini, he rawaka tēnei mō te whakahaere tere-teitei o te motuka me te ātete ki te pānga o te au auau-teitei me te ngaohiko o te inverter. Te kino o te whakamātao.

He tino pai te kounga taurite o te mōta hurihanga auau, ā, ko te taumata wiri he taumata-R. He tino tika te mahi miihini o ngā wāhanga mīhini, ā, e whakamahia ana ngā peera motuhake tino tika, ka taea te oma i te tere teitei.