Raws li kev hloov pauv ntawm lub inverter Circuit Court, hluav taws xob forklift inverter tau muab faib ua, thiab lub inverter tuaj yeem muab faib ua peb hom: PAW tswj hom, PWM tswj hom thiab siab nqa zaus PWM tswj hom.
①PAM tswj yog cov ntawv luv ntawm Pulse Amplitude Modulation tswj. Nws yog ib txoj kev tswj hwm uas lub amplitude ntawm cov zis voltage (tam sim no) yog tswj nyob rau hauv lub rectifier Circuit Court, thiab cov zis zaus ntawm cov hluav taws xob stacker yog tswj nyob rau hauv lub inverter Circuit Court ib feem. Vim tias qhov hloov pauv zaus ntawm lub inverter Circuit Court commutator ntaus ntawv hauv PAM-tswj inverter yog cov zis zaus ntawm lub inverter, qhov no yog txoj kev hloov kho synchronous.
②PWM tswj yog cov ntawv luv ntawm Pulse Width Modulation tswj, uas yog txoj kev tswj hwm ib txhij tswj lub amplitude thiab zaus ntawm cov zis voltage (tam sim no) nyob rau hauv inverter Circuit Court ib feem ntawm hluav taws xob forklift stacker. Nyob rau hauv txoj kev tswj no, lub semiconductor switching Cheebtsam ntawm lub inverter Circuit Court yog switched rau thiab tawm ntawm ib tug kuj loj zaus, thiab lub hom phiaj ntawm kev tswj qhov voltage (tam sim no) ntawm lub forklift tsheb yog ua tiav los ntawm kev hloov qhov dav ntawm cov zis mem tes.
③High carrier zaus PWM tswj Txoj kev tswj no yog ib qho kev txhim kho ntawm PWM tswj txoj hauv paus ntsiab lus, thiab yog ib txoj kev tswj tau txais los txo lub suab nrov ntawm lub cev muaj zog khiav. Hauv txoj kev tswj hwm no, cov neeg nqa khoom zaus tau nce siab tshaj qhov zaus uas tuaj yeem hnov los ntawm pob ntseg (10-20KHz), thiaj li ua tiav lub hom phiaj ntawm kev txo lub suab nrov ntawm lub forklift lub cev muaj zog. Txoj kev tswj no tsuas yog siv rau cov suab nrov qis inverters, thiab tseem yuav yog txoj kev loj hlob ntawm inverters yav tom ntej. Txij li txoj kev tswj hwm no muaj cov kev xav tau siab ntawm kev hloov ceev ntawm cov khoom siv commutator, cov khoom siv commutator siv tau tsuas yog siv cov khoom siv hluav taws xob xws li IGBT thiab MOSFET nrog kev sib hloov ceev. tej kev txwv. Txawm li cas los xij, nrog kev txhim kho ntawm lub zog hluav taws xob thev naus laus zis, lub peev xwm ntawm cov khoom siv hluav taws xob hloov pauv nrog kev hloov pauv ceev yuav loj dua thiab loj dua, yog li nws xav tias ntau thiab ntau zaus converters yuav siv txoj kev tswj no.
Ob qho PWM tswj thiab cov neeg nqa khoom siab zaus PWM tswj tau nyob rau hauv asynchronous ceev tswj hom, uas yog, cov zis zaus ntawm lub inverter tsis sib npaug rau qhov hloov zaus ntawm cov khoom sib hloov ntawm lub inverter Circuit Court.
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