Cov kev paub txog hluav taws xob
31. Cov theem sib npaug ntawm cov khoov tawb rotor yog sib npaug rau cov xov tooj, thiab sib npaug ntawm cov lem ib ntu yog 1/2.
32. Peb theem ntawm cov kabmob ua haujlwm ntawm AC-theem, cov cim peb theem, ACmetrical three-phase AC tam sim no, nws txoj kev siv hluavtaws hluavtaws magnetomotive force yog ib qho kev sib hloov ntawm cov hlau nplaum, nws qhov kev taw qhia ntawm kev sib hloov yog los ntawm txoj haujlwm ntawm lub luag haujlwm ua rau lub caij ua haujlwm, thiab tom qab ntawd ces mus rau tom ntej Tus ntiv taw ntawm ib theem lagging.
33. Muaj ob txoj kev sib txuas xws li lub hnub qub thiab daim duab peb sab ntawm peb lub caij windings ntawm cov qauv peb-theem; qhov sib nqus Circuit Court muaj ob lub qauv, ib pawg thiab ib lub siab.
34. Cov pawg sib koom ua ke rau cov neeg sib tw rau peb-theem yog 1, 3, 5, 7, 9, thiab 11. Tus lej 6 tus lej yog 0, 2, 4, 6, 8, thiab 10.
35. Nyob hauv AC lub qhov cua, cov zauv ntawm ib theem ntawm ib lub thawv twg yog q = q = Z / 2p / m (piv txwv tias cov zauv twg yog Z, cov khoob khoob zaum ob sab p, thiab tus lej theem yog m) . Nyob hauv AC lub zeeg, ob qho tib si theem 120o thiab cov 60o theem band siv. Ntawm lawv, lub 60o theem band muaj kev siv zog siv zog ua zog thiab rov qab electromotive quab yuam.
36. Lub tshooj symmetrical tivthaiv yuav siv los sojntsuam cov haujlwm asymmetric ntawm transformers thiab synchronous motors. Lub hauv paus ntawm daim ntawv thov yog hais tias lub system yog linear, yog li ntawd, txoj kev cai loj tshaj plaws yuav raug siv los daws teeb meem asymmetric peb-theem zog rau hauv kev sib luag thiab tsis zoo ib txwm. Peb teev ntawm symmetrical peb-theem systems xws li xoom sib lawv liag.
37. Qhov kev qhia tawm ntawm cov coefficient ntawm cov luv-coefficient yog ky1 = kev txhaum (p / 2 × y1 / t), thiab lub ntsiab lus ntawm lub cev yog qhov luv luv ua rau sab nraum EMF (los yog lub zog magnetomotive) ) piv nrog tag nrho kev nrug. Coefficient). Cov quab yuam ntawm kev faib coefficient yog kq1 = kev txhaum (qa1 / 2) / q / sin (a1 / 2), thiab nws lub ntsiab lus lub ntsiab lus yog thaum cov q coils nyob hauv theem sib txawv a1 hluav taws xob, EMF (los yog magnetomotive quab yuam) yog qhov tseem ceeb. Cov coefficient of txo (los yog tus luv nqi).
38. Tam sim no transformers siv los ntsuas qhov tam sim no thiab sab nraud tsis tuaj yeem qhib. Tus ntsuas hluav taws xob siv los ntsuas qhov voltage, thiab sab nraub sab tsis tuaj yeem ua luv luv.
39. Lub cav yog qhov cuab yeej ua rau lub zog ua hluav taws xob ua hluav taws xob hluav taws xob (los yog lwm yam) los yog hloov ib qho ntawm qhov hloov voltage mus rau lwm qhov hloov voltage. Los ntawm cov kev xav ntawm kev hloov ua lub zog, cov cav ua tau faib ua peb pawg: transformers, motors, thiab generators.
40. Lub peev xim ntawm qhov lub qhov hluav taws xob kaum a1 yog a1 = p × 360o / Z. Nws tuaj yeem pom tau hais tias lub qhov hluav taws xob kaum a1 yog sib npaug rau p sij hawm ntawm qhov chaw ua haujlwm ntawm qhov chaw.
41. Txoj cai ntawm kev txo kev hloov tshuab hluav taws xob yog: ua ntej thiab tom qab qhov kev txo, xyuas kom meej tias cov hlau nplaum hluav taws xob ntawm qhov sib tw yog qhov tsis tu ncua, thiab tias lub zog thiab tsis muaj zog ntawm cov cua tsis hloov.
42. Tus cwj pwm cwj pwm ntawm tus cwj pwm txav yog pom los ntawm lub neej ntawm tus nqi siab tshaj plaws, uas yog, qhov siab tshaj plaws tus nqi raug ncav thaum poob peev xwm sib npaug sib npaug zos tas li.
43. Kev ntsuas tsis pom kev ntawm lub tshuab hluav taws xob feem ntau yog ua tiav los ntawm kev siv cov khoom hluav taws xob thiab ntsuas ntawm sab nrawm sab. Qhov kev ntsuas luv luv ntawm lub tshuab hluav taws xob feem ntau yog ua tiav los ntawm kev siv qhov hluav taws xob thiab kev ntsuas ntawm sab nrawm sab.
44. Thaum cov kev hloov tsheb khiav hauv kev ua haujlwm, cov xwm txheej tsis muaj kev thauj mus los ntawm kev khiav tsis sib haum yog: qhov sib piv yog sib npaug thiab pawg sib koom ua ke sib npaug.
45. Thaum cov kev hloov tsheb khiav hauv kev ua haujlwm, qhov kev faib ua haujlwm ntawm lub peevxwm yog qhov nqi ntawm qhov kev hloov ntawm lub cav hloov tam sim no yog qhov ncaj qha mus rau tus nqi ntawm qhov luv-impedance impedance. Lub peev xwm ntawm lub tshuab hluav taws xob muaj peev xwm siv tau los siv thaum khiav hauj lwm hauv kev ua haujlwm: qhov tseem ceeb ntawm qhov luv luv-impedance impedance yog vaj huam sib luag, thiab lawv cov kab xev impedance yog sib npaug.
