Thaum qhov hluav taws xob txo qis, lub cev muaj zog, raws li cov cuab yeej tseem ceeb ntawm lub tshuab hluav taws xob, ua rau muaj kev hloov pauv tseem ceeb. Cov hauv qab no yog cov ncauj lus kom ntxaws ntawm cov kev hloov pauv no, tsim los pab kom nkag siab zoo dua qhov cuam tshuam ntawm kev txo qis ntawm lub cev muaj zog thiab kev ua haujlwm ntawm lub cev.
Ib, Kev Hloov Tam Sim No
Kev piav qhia ntawm lub hauv paus ntsiab lus: Raws li Ohm txoj cai, kev sib raug zoo ntawm tam sim no I, voltage U thiab tsis kam R yog I = U / R. Nyob rau hauv hluav taws xob motors, qhov tsis kam R (feem ntau stator kuj thiab rotor tsis kam) feem ntau tsis hloov ntau, yog li qhov txo qis ntawm voltage U yuav ncaj qha ua rau muaj kev nce hauv tam sim no I. Rau ntau hom hluav taws xob, qhov kev hloov tam sim no yuav zoo ib yam li cov stator tsis kam. Rau ntau hom motors, cov kev qhia tshwj xeeb ntawm kev hloov tam sim no yuav txawv.
Kev ua haujlwm tshwj xeeb:
DC motors: brushless DC motors (BLDC) thiab brushed DC motors muaj kev nce ntxiv nyob rau hauv tam sim no thaum lub voltage txo yog tias cov load tseem nyob tas li. Qhov no yog vim hais tias lub cev muaj zog yuav tsum tau muaj tam sim no los tswj cov thawj torque tso zis.
AC motors: Rau asynchronous motors, txawm hais tias lub cev muaj zog cia li txo nws cov ceev kom phim lub load thaum lub voltage txo, qhov tam sim no tseem yuav nce nyob rau hauv cov ntaub ntawv ntawm ib tug hnyav los yog ntau ceev hloov load. Raws li rau synchronous lub cev muaj zog, yog hais tias lub load tseem tsis hloov thaum lub voltage yog txo, tam sim no yuav tsis hloov ntau theoretically, tab sis yog hais tias lub load nce, tam sim no yuav nce thiab.
ﺌ 、 torque thiab ceev hloov
Hloov ntawm torque: Kev txo qis feem ntau ua rau txo qis ntawm lub cev muaj zog torque. Qhov no yog vim hais tias torque yog proportional rau cov khoom ntawm tam sim no thiab flux, thiab thaum lub voltage yog txo, txawm tias tam sim no nce, lub flux yuav txo vim tsis muaj voltage, ua rau ib tug txo nyob rau hauv tag nrho torque. Txawm li cas los xij, qee zaum, xws li hauv DC motors, yog tias qhov tam sim no nce txaus, nws tuaj yeem them rov qab rau qhov txo qis hauv qee qhov, ua kom lub zog ruaj khov.
Kev hloov ceev: Rau AC motors, tshwj xeeb tshaj yog asynchronous thiab synchronous motors, txo qhov voltage yuav ncaj qha ua rau txo qhov ceev. Qhov no yog vim hais tias qhov ceev ntawm lub cev muaj feem xyuam rau lub zaus ntawm lub hwj chim mov thiab tus naj npawb ntawm lub cev muaj zog ncej khub, thiab qhov txo ntawm voltage yuav cuam tshuam lub zog ntawm lub cev muaj zog electromagnetic teb, uas nyob rau hauv lem yuav txo tau qhov ceev. Rau DC motors, qhov ceev yog proportional rau qhov voltage, yog li qhov ceev yuav txo raws li thaum lub voltage txo.
Cov khoom siv hluav taws xob thiab hluav taws xob hluav taws xob, kev siv hluav taws xob thiab hluav taws xob
Lower efficiency: qis voltage yuav ua rau txo lub cev muaj zog efficiency. Vim tias lub cev muaj zog hauv kev ua haujlwm qis qis, xav tau tam sim no ntau dua los tswj cov zis hluav taws xob, thiab qhov nce ntawm tam sim no yuav ua rau lub cev muaj zog tooj liab thiab hlau poob, yog li txo qhov kev ua tau zoo tag nrho.
Kev tsim hluav taws xob ntau ntxiv: Vim muaj qhov ua tau zoo tam sim no thiab txo qis, lub cev muaj zog ua kom muaj cua sov ntau dua thaum ua haujlwm. Qhov no tsis yog tsuas yog ua kom cov laus thiab hnav ntawm lub cev muaj zog, tab sis kuj tseem tuaj yeem ua rau lub zog ntawm cov khoom siv tiv thaiv overheating, uas ua rau lub cev muaj zog.
四 , qhov cuam tshuam rau lub neej ntawm lub cev muaj zog
Kev ua haujlwm ntev nyob rau hauv qhov tsis ruaj tsis khov lossis tsis muaj hluav taws xob ib puag ncig yuav ua rau lub neej ua haujlwm ntawm lub cev muaj zog. Vim tias qhov txo qhov voltage los ntawm qhov nce tam sim no, torque fluctuations, ceev poob thiab efficiency txo thiab lwm yam teeb meem yuav ua rau muaj kev puas tsuaj rau lub internal qauv thiab hluav taws xob kev ua tau zoo ntawm lub cev muaj zog. Tsis tas li ntawd, qhov nce hauv kev tsim hluav taws xob tseem yuav ua kom cov txheej txheem kev laus ntawm cov khoom siv hluav taws xob hluav taws xob.
ﺔ 、 Countermeasures
Txhawm rau txo qhov cuam tshuam ntawm kev txo qis ntawm lub cev muaj zog, cov kev ntsuas hauv qab no tuaj yeem ua tau:
Optimize lub hwj chim mov system: xyuas kom meej tias qhov voltage ntawm lub hwj chim daim phiaj yog ruaj khov, kom tsis txhob muaj kev cuam tshuam ntawm voltage fluctuations ntawm lub cev muaj zog.
Kev xaiv cov motors tsim nyog: nyob rau hauv kev tsim thiab kev xaiv ntawm voltage fluctuations coj mus rau hauv tus account tag nrho cov yam ntxwv ntawm kev xaiv ntawm motors nrog ib tug ntau yam ntawm voltage adaptation.
Nruab voltage stabilizer: nruab voltage stabilizer lossis voltage regulator ntawm lub tswv yim ntawm lub cev muaj zog kom tswj tau qhov ruaj khov ntawm qhov hluav taws xob.
Txhim khu kev txij nkawm: kev tshuaj xyuas thiab kev saib xyuas lub cev tsis tu ncua txhawm rau txheeb xyuas thiab daws cov teeb meem tshwm sim raws sijhawm txhawm rau txhawm rau txuas lub neej kev pabcuam ntawm lub cev muaj zog.
Hauv cov ntsiab lus, qhov cuam tshuam ntawm qhov txo qis ntawm lub cev muaj zog yog ntau yam, suav nrog kev hloov pauv tam sim no, lub zog hloov pauv thiab nrawm, kev ua haujlwm zoo thiab teeb meem kub thiab cuam tshuam ntawm lub cev muaj zog. Yog li ntawd, hauv kev siv tswv yim yuav tsum tau siv cov kev ntsuas zoo los txo cov teebmeem no kom ntseeg tau tias muaj kev nyab xeeb thiab ruaj khov ntawm lub cev muaj zog.
Post lub sij hawm: Aug-08-2024