electromagnetic
Lub tshuab hluav taws xob electromagnetic DC yog tsim los ntawm ib tug stator magnetic ncej, ib lub rotor (ib qho chaw), ib tug commutator (nquag hu ua commutator), txhuam, khov, cov kabmob, thiab cov zoo li.
Tus stator magnetic ncej (lub ntsiab ntawm tus pas hlau loj) ntawm lub tshuab hluav taws xob tam sim no yog tsim los ntawm ib qho tseem ceeb thiab ib qho kev ua teb. Raws li txoj kev sib txawv hauv kev sib tw (tus txheej txheem qub raug hu ua excitation), nws tuaj yeem muab faib ua cov koob yees duab DC-tsav tsheb, parallel-excited DC motor, nyias muaj siab rau DC lub zog thiab muaj zog xyaw DC. 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 koob-siab DC tsav txuas nrog series nrog lub rotor winding los 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 shunt 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 txo qhov voltage ntawm lub rotor winding.
Ntxiv nrog rau qhov kev sib tw, lub stator ncej ntawm lub tshav puam DC-tsav DC lub cev kuj tau npaj muaj cov cua ntsawj ntshab hauv kab nrog lub rotor windings (pes tsawg ntawm kev lem 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 ntawm kev sib tw, pib lub qhov taw qhia txog 4 zaug ntawm lub tswv yim taw qhia, 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.
Lub commutator ntawm tus neeg muag khoom yog tsim los ntawm cov yas muaj zog los ntawm kev siv cov khoom siv hlau xws li nyiaj tooj liab lossis cadmium tooj liab. Kev txhuam yog nyob rau hauv kev sib txuas lus nrog tus kws muag khoom muab ntais tam sim no rau rotor winding. Kev txhuam ntawm lub tshuab hluav taws xob electromagnetic DC feem ntau yog siv cov hlau txhuam los yog lub tshuab hluav taws xob txhuam. Cov tub ntxhais hlau ntawm lub rotor yog tsim los ntawm silicon steel los xij, feem ntau 12 qhov qhib, thiab 12 poob ntawm cov hlua khi hlua. Tom qab cov cua ntsig sib txuas hauv koob, lawv muaj feem xyuam nrog 12 nqe lus sib txuas.
