Chifukwa chiyani ma commutator amagwiritsidwa ntchito pamakina a DC?

A wapaulendoamagwiritsidwa ntchito m'makina a DC (mwachindunji) monga ma motors a DC ndi ma jenereta a DC, pazifukwa zingapo zofunika:

Kusintha kwa AC kukhala DC: Mu ma jenereta a DC, woyendetsa amathandizira kusintha ma alternating current (AC) omwe amalowetsedwa muzolowera zankhondo kukhala zotuluka mwachindunji (DC). Pamene zida zimazungulira mkati mwa mphamvu ya maginito, woyendetsa galimoto amatembenuza komwe kuli komweko mu koyilo yamtundu uliwonse panthawi yoyenera, kuwonetsetsa kuti zomwe zimapangidwira zikuyenda motsatira mbali imodzi.

Kusamalira Mayendedwe Apano: Mu ma motors a DC, woyendetsa amawonetsetsa kuti mayendedwe apano kudzera pa ma windings a armature amakhalabe nthawi zonse pamene rotor imazungulira mkati mwa maginito. Kuthamanga kwaposachedwa kumeneku kumapanga torque yosalekeza yomwe imayendetsa kuzungulira kwa injini.

Generation of Torque: Mwa kutembenuza nthawi ndi nthawi komwe kumalowera komwe kuli komweko pamakona achitetezo, woyendetsa amatulutsa torque yokhazikika mumagetsi a DC. Torque iyi imathandizira injini kuthana ndi inertia ndi katundu wakunja, zomwe zimapangitsa kuzungulira kosalala komanso kosalekeza.

Kupewa Zofupikitsa Zankhondo: Magawo a commutator, otetezedwa kuchokera kwa wina ndi mnzake, amaletsa mabwalo aafupi pakati pa ma coil oyandikana nawo. Pamene commutator ikuzungulira, imawonetsetsa kuti coil iliyonse imasunga magetsi ndi dera lakunja kupyolera mu maburashi ndikupewa kukhudzana ndi ma coil oyandikana nawo.

Kuwongolera Kuthamanga ndi Torque: Mapangidwe a commutator, pamodzi ndi kuchuluka kwa magawo ndi kasinthidwe ka mafunde, amalola kuwongolera kuthamanga ndi mawonekedwe a torque a makina a DC. Pazinthu zosiyanasiyana monga mphamvu yamagetsi yomwe imagwiritsidwa ntchito komanso mphamvu ya maginito, ogwira ntchito amatha kusintha liwiro ndi torque ya injini kapena jenereta kuti igwirizane ndi zofunikira zina.

Ponseponse, awapaulendoimagwira ntchito yofunika kwambiri pakugwira ntchito kwa makina a DC pothandizira kusinthika kwa mphamvu yamagetsi kukhala mphamvu yamakina (mu ma motors) kapena mosemphanitsa (mu majenereta) ndikusunga maulumikizidwe odalirika amagetsi ndikuwongolera komwe kumayendera komanso kukula kwamayendedwe apano.