Qeb peb, DC kev sib tsoo tsheb
DC lub cev yog tsim los ntawm tus qauv stator magnetic ncej, lub rotor (armature), kev sib dhos, txhuam, khov, cov kabmob, thiab lwm yam, thiab lub stator magnetic ncej (lub ntsiab ntawm tus qauv ntawm lub tshuab electromagnetic DC) ib qho tseem ceeb thiab ib qho kev ua cua nrawm. Raws li txoj kev sib txawv hauv kev sib tw (tus qauv qub yog hu ua excitation), nws tuaj yeem muab faib ua tus qauv DC-tsav, khaus DC motor, DC-tsav DC lub cav thiab muaj zog-zoo siab DC tsav. Vim yog cov kev sib txawv ntawm kev sib tw, txoj cai ntawm stator magnetic flux (tsim los ntawm lub zog ntawm qhov excitation coil ntawm tus ncej stator) kuj sib txawv.
Cov excitation winding ntawm lub koob yees duab series excited DC thiab rotor winding txuas nrog series ntawm txhuam thiab commutator. Qhov kev cia siab tam sim no yog proportional rau tus tub tam sim no. Qhov sib nqus cov nplhaib ntawm tus stator tsub kom muaj kev nce siab ntawm qhov tam sim no. Lub torque zoo ib yam li cov hluav taws xob tam sim no. Cov square ntawm pivot tam sim no yog proportional rau cov kev ceev, uas txo sai heev nrog ua torque los yog tam sim no. Twj pib muaj peev xwm ncav tau ntau dua 5 zaug ntawm qhov taw qhia kom tau, lub sij hawm luv luv tshaj qhov siab yuav ncav cuag ntau tshaj li 4 npaug ntawm qhov taw qhia kom tau, tus nqi hloov ceev loj loj, thiab qhov ceev tsis muaj qhov siab (nws yog feem ntau tsis pub khiav hauv qab tsis muaj kev thauj khoom)). Kev ceev ceev tuaj yeem tau los ntawm kev sib txuas (los yog ua kom tiav) cov kab nraub qaum nrog cov sab nraud los yog los ntawm kev hloov cov kab nrag hauv kev ua haujlwm.
Qhov excitation winding ntawm DC tsav txuas nrog parallel nrog lub rotor winding. Qhov kev cia siab tam sim no yog qhov tsis tas li, pib lub qhov taw qhia ua ntej mus rau qhov chaw tam sim no, thiab pib qhov tam sim no yog kwv yees li 2.5 zaus ntawm cov nqi tam sim no. Qhov ceev txo me ntsis nrog kev nce ntawm tam sim no thiab torque, thiab lub luv luv sij hawm overload torque yog 1.5 lub sij hawm ntawm cov torque rated. Tus nqi ntawm qhov kev hloov ntawm qhov kev khiav ceev yog tsawg, xws li 5% mus rau 15%. Nws muaj peev xwm raug kho los ntawm weakening lub zog ntawm lub magnetic teb tas li.
Qhov excitation winding ntawm DC tsav yog txuas nrog rau ib qho kev tswj fais fab tuag tawm tshwj xeeb, thiab kev cia siab tam sim no kuj yog qhov ruaj khov. Pib lub zog yog proportional rau qhov qub tam sim no. Kev hloov ceev kuj yog 5% ~ 15%. Tus ceev yuav raug txo los ntawm weakening magnetic teb tas zog los yog los ntawm kev txo qhov voltage ntawm rotor winding.
Ntxiv nrog rau qhov kev sib tw, lub stator ncej ntawm qhov kev sib xyaw nrog DC lub cav tseem muaj cuab kav nrog cov cua ntsawj ntshab hauv kab nrog cov rotor windings (pes tsawg ntawm qhov lem me me). Cov kev taw qhia ntawm cov sib nqus cov nplaim hluav taws xob tau los ntawm kev sib tw series yog tib yam li qhov sib nqus ntawm kev sib nqus ntawm qhov loj hauv kev sib tw, pib lub qhov taw qhia txog 4 zaug ntawm lub tswv yim taw kev, thiab lub sij hawm luv luv tshaj torque yog li 3.5 npaug ntawm cov kwv yees torque. Tus nqi ntawm qhov kev hloov ntawm qhov kev kub ceev yog 25% mus rau 30% (muaj feem xyuam rau kev sib tw series). Tus ceev tau muab kho los ntawm weakening magnetic teb zog.
