Chosinthira Chosinthira cha Polarity

Polarity Reversing Rectifier (PRR) ndi chipangizo chamagetsi cha DC chomwe chingasinthe polarity ya mphamvu yake. Izi zimapangitsa kuti chikhale chothandiza kwambiri pa ntchito monga electroplating, electrolysis, electromagnetic braking, ndi DC motor control, komwe kusintha komwe kukuchitika ndikofunikira.

1. Momwe Imagwirira Ntchito
Ma rectifier okhazikika amasintha AC kukhala DC ndi polarity yokhazikika. Ma PRR amamanga pa izi pogwiritsa ntchito zida zamagetsi zowongolera—monga thyristors, IGBTs, kapena MOSFETs—kuti asinthe kayendedwe ka magetsi. Mwa kusintha ngodya yowombera kapena kusinthana, chipangizocho chimatha kusintha bwino kapena mwachangu kutulutsa kuchokera ku zabwino kupita ku zoipa.

2. Kapangidwe ka Circuit
Kawirikawiri, PRR imagwiritsa ntchito chowongolera mlatho cholamulidwa mokwanira:
Kulowetsa kwa AC → Mlatho Wowongolera Wowongolera → Fyuluta → Lowetsani
Mlathowu uli ndi zinthu zinayi zomwe zingathe kulamulirika. Poyang'anira zomwe zipangizo zimagwira ntchito komanso nthawi yomwe zikugwira ntchito, zotsatira zimatha kusintha pakati pa:
▪ Polarity yabwino: mphamvu yamagetsi imayenda kuchokera ku terminal yabwino kupita ku katundu.
▪ Polarity yoipa: mphamvu yamagetsi imayenda mbali ina.
Ma voltage milingo amathanso kusinthidwa mwa kusintha ngodya ya trigger (α), zomwe zimathandiza kuti pakhale kuwongolera molondola kwa polarity ndi kukula.

3.Mapulogalamu
(1) Kukonza Magetsi ndi Kukonza Ma Electrolysis
Njira zina zimafuna kuti magetsi azibwerera m'mbuyo nthawi ndi nthawi kuti akonze bwino utoto. Ma PRR amapereka DC yowongolera komanso yolunjika mbali zonse ziwiri kuti ikwaniritse izi.
(2) Kulamulira Magalimoto a DC
Amagwiritsidwa ntchito poyendetsa kutsogolo/kumbuyo komanso poyendetsa mabuleki obwezeretsa mphamvu, kubweza mphamvu ku dongosolo.
(3) Kutseka kwa Magetsi
Kubweza mphamvu yamagetsi kumathandiza kuti makina amagetsi azitulutsidwa mwachangu kapena molamulidwa.
(4) Laboratory & Kuyesa
Ma PRR amapereka pulogalamu yosinthika ya bipolar DC, yoyenera kafukufuku, mayeso, ndi zoyeserera zomwe zimafuna polarity yosinthasintha.

Zipangizo zosinthira mphamvu za polarity-reverser zikukhala zofunika kwambiri m'makampani ndi kafukufuku. Zimaphatikiza kulamulira kwa polarity kosinthasintha ndi kusintha kwa mphamvu moyenera, zomwe zimapangitsa kuti zikhale zofunika kwambiri pakugwiritsa ntchito zamagetsi zamagetsi zamakono. Pamene ukadaulo wa zida ndi zowongolera ukukwera, ma PRR akuyembekezeka kugwiritsidwa ntchito kwambiri.