Muaj ntau txoj hauv kev los txo cov kev sib haum xeeb, tab sis tsis muaj kev daws teeb meem los daws txhua qhov teeb meem.Cov khoom siv hluav taws xob sib txawv, cov khoom sib txawv, xav tau peb muab cov kev daws teeb meem zoo tshaj plaws los txo cov kev sib haum xeeb.
Cov lus hauv qab no piv ntawm THDi ntawm ntau yam kev sib haum xeeb mitigate technologies ua ntej.
| 6 pulse vfd tsis muaj reactor / choke | rau vfd Tsawg DC bus capacitor | Rau pulse vfd + 5% reactor / choke | 3 theem vfd active pem hauv ntej kawg tsav | Rau pulse vfd + passive lim | Multipulse vfd | |
| Typical THDi | 90-120% | 35--40% | 35--45% | 3--5% | 5--10% | 12 mem tes: 10-12% 18 mem tes: 5-6% |
| Pros | Kev daws teeb meem yooj yim thiab tus nqi qis, siv tau rau kev teeb tsa nrog cov khoom siv me me | Kev daws teeb meem yooj yim thiab tus nqi qis uas ua rau qee qhov txo qis ntawm kev sib haum xeeb tam sim no | Kev daws teeb meem hauv HVAC daim ntawv thov | Qhov zoo tshaj plaws harmonic kev ua tau zoo ntawm ib qho kev daws teeb meem. Muaj peev xwm los txhawb cov zis hluav taws xob thaum lub sij hawm tsis tshua muaj kab. Unity fundamental power factor. Nws tuaj yeem muab kev txhawb nqa braking | Piv txwv tias qhov chaw ntawm lub cev muaj, lub lim dej tsis sib haum xeeb tuaj yeem muab ntxiv tom qab lub tsav tau teeb tsa, yog tias kev sib haum xeeb tau txiav txim siab tias yuav muaj teeb meem. | Cov txheej txheem kev sib haum xeeb mitigate. |
| Cons | Cov ntsiab lus siab sib haum xeeb, tsis pom zoo rau kev teeb tsa nrog ntau dua ntawm cov tsav. | High voltage distortion, ntau tshaj li rau pulse vfd nrog 5% reactor / choke. | Cov kab ke uas muaj qhov loj lossis qhov loj ntawm cov tsav, yuav xav tau kev txo qis kev sib raug zoo ntxiv. | Tus tsav nws tus kheej ua kom muaj cua sov me ntsis dua li tus qauv rau 6 pulse tsav nrog reactor. | Lub zog tseem ceeb ntawm lub teeb loads tshwj tsis yog lub lim lub capacitors hloov tawm ntawm Circuit Court. Risk ntawm resonances ntawm lub lim capacitors thiab lwm yam capacitors nyob rau hauv lub system. | Kev ua tau zoo ntawm kev sib haum xeeb yuav tsum muaj qhov sib npaug ntawm AC lub zog noj nrog me ntsis kev cuam tshuam tom qab. Yooj yim heev rau retrofit hauv thaj teb. |
Nrog kev txhim kho txuas ntxiv ntawm IGBT lub zog thev naus laus zis, peb theem tshiabnquag limtau lug txhawb thiab siv nyob rau hauv kev ua lag luam.APFtau txais cov teeb liab tam sim no nyob rau lub sijhawm tiag tiag los ntawm kev hloov pauv tam sim no sab nraud, thiab cais cov kev sib haum xeeb los ntawm kev tshawb pom hauv Circuit Court, thiab tsim cov nyiaj them tam sim no nrog rau theem rov qab ntawm cov kev sib haum xeeb hauv lub cev los ntawm IGBT lub zog hloov pauv kom paub txog kev ua haujlwm ntawm kev lim dej. tawm harmonic.
Cov zis them tam sim no ntawmAPFNws txawv raws li cov kev sib raug zoo ntawm lub cev, yog li yuav tsis muaj teeb meem them nyiaj.Ntxiv rau,APFmuaj kev tiv thaiv overload muaj nuj nqi.Thaum cov kev sib haum xeeb ntawm lub cev loj dua lub peev xwm lim, lub cuab yeej tuaj yeem txwv qhov tso zis ntawm 100% rated peev yam tsis muaj overload.
Post lub sij hawm: Nov-24-2023