Iko kushandiswa kweATSE-Otomatiki yekuchinjisa switch inogona kugadzirisa dambudziko rinopfuura remitsetse isina kwayakarerekera

Otomatiki kutumira switch (ATSE)inogona kugadzirisa dambudziko rinopindirana remitsara isina kwayakarerekera.Saka tinorevei nemutsara usina kwawakarerekera?

Mufananidzo 1: Fungidzira kuti iyo voltage yeDC simbakupihwa ndeye 220V, uye kukosha kwekupokana kwevatatu mutoro resistors R ndeye 10 Ohms.Ngativerengei voltage pairi remedu resistor Ra:

Kune resistor Ra, isu tine:

Cherechedza kuti kune matatu mafungu anoyerera kuburikidza nekupikisa Ra, imwe yacho inobuda kunzemagetsiEa uye inodzokera kune yakaipa danda rekupa magetsi kuburikidza neLINE N. Mamwe maviri anobuda kubva muEa uye anodzokera kune inegetive terminal kuburikidza neEb kana Ec.Asi nekuda kwekuti magetsi emagetsi ezvitubu zviviri zviri muchiuno ichi akaenzana uye akapesana, ikozvino i zero.
Chimwe chinhu chinoda kutariswa ndechekuti voltage paN point ndeye 0V.
Ngatitarisei nhamba yechipiri: iyo N iri pamufananidzo inotsemuka kuita mapoinzi maviri, N naN'.Chii chinonzi voltage pane resistor Ra?Zviri nyore kutaura kuti voltage mhiri kweRa ndeye 0V.
Zvechokwadi, chirevo pano ndeche: matatu magetsi emagetsi emagetsi ari munharaunda anonyatsoenderana, uye maitiro ekupikisa anonyatsoenderana, uye kunyange zviyero zvetambo, kureva kupikisa kwemutsara, zvinonyatsoenderana.
Mumutsara chaiwo, aya ma parameter haazove akafanana, saka Ra ichava nemhepo yakaderera zvikuru.Ngatidaidze iyo N' voltage.

Ngatitarisei pamufananidzo uri pazasi:

Sezvatinoona, simba rekupa muFIG.3 uye 4, FIG.1 uye FIG.2 inochinjwa kubva kuDC kuenda kuchitatu-phase AC, uye chikamu chemagetsi i220V, saka mutsara wemagetsi ndeye 380V, uye musiyano wepakati pakati pezvikamu zvitatu ndeye 120 degrees.
Chii chinonzi voltage pane resistor Ra mumufananidzo 3?
Sezvo chinangwa cheichi chinyorwa chiri chete kuratidza dambudziko, kwete kuita kuwanda kwekuverenga kwedunhu.Hatichafanira kuita maverengero chaiwo.
Asi isu tinogona kunyatsoziva izvozvo, yeFIG.3, iyo voltage pane resistor Ra zvakare inenge yakaenzana ne217.8V uye iyo interphase voltage i zero.
MuFIG.4, tinoona kuti n-line inotyora muN neN', saka chii chinoitika kuvoltage panzvimbo N'?
Mhinduro yacho yakafanana chaizvo neDC.Kana dunhu rakanyatsoenderana, Un 'equals 0V;Kana maparamita edunhu asingaenderane, Un 'haina kuenzana ne0V.
Mudunhu rinoshanda, kunyanya munharaunda yekuvhenekesa, matatu-phase AC is asymmetric, saka ikozvino inoyerera kuburikidza neN line kana PEN line (zero line).Kamwe mutsara weN kana PEN mutsara waputsika, voltage kuseri kwenzvimbo yekupwanya inokwira.Muzviitiko zvakanyanyisa, inokwira kuchikamu chemagetsi, chinova 220V.

NgatitariseiATSE:

Ona pazasi:

Mumufananidzo uyu tinoona mbiri inopinda mutsetse, iyoATSE, uye zvechokwadi mutoro chiedza.Pano, zvisinei, nhamba yemarambi pazvikamu zvitatu zvinosiyana, nechikamu A chiri chakanyanya kuremerwa.
Ngatizvifungidzirei izvozvoATSEikozvino inovhara T1 loop kuruboshwe, uye kushanda kwazvino kuri kubva kuT1 kuenda kuT2.
Kana, panguva yekushandura, mutsara we1N unotemwa kutanga uye chikamu chetatu chinogurwa gare gare, ipapo panguva yekushandura, tinogona kuziva pakarepo kubva pane ruzivo rwepamusoro kuti mutsara wemutsara wekutakura unogona kusimuka kana kudonha.Kana iyo voltage pamwenje ichipfuura chikamu chemagetsi chakawandisa, mwenje unopisa panguva yekutendeuka.
Ndipo panouya kupindirana kwemitsara isina kwayakarerekera.

Chii chinogadzirisa?

ATSEneine neutral line overlapping function, kana yabatidzwa, tanga waona kuti matatu-phase voltage inobatidzwa kutanga, uyezve N line inobatidzwa pakupedzisira;Kana yabatidzwa, tanga wabatidza mutsara weN, wobva wabatidza matatu-phase voltage.Kunyangwe, ATSE inogona kupindirana nemitsara yeN yenzira mbiri ipapo ipapo.Iri ndiro basa rakarerekera mutsetse rinopindirana.