Ib qho kev tsom xam dav dav thiab kev tawm tsam rau kev laus qhov tshwm sim ntawm APF (nquag siv fais fab lim) khoom siv
Jul 30, 2025| As the industrial power environment becomes increasingly complex, the APF (Active Power Filter) as a key device for power quality management has drawn much attention due to its long-term operational reliability. Txhawm rau kom ntseeg tau tias kev saib xyuas thiab lub neej ntawm cov khoom yuav los ntawm cov neeg siv hluav taws xob, yuav ua cov khoom siv sib koom tes ua noj thiab cov kev cuam tshuam nrog kev laus thiab nws cuam tshuam nrog apf.
Ⅰ. Cov yam ntxwv ntawm Kev Ua Haujlwm Ua Haujlwm ntawm Cov Qauv Tseem Ceeb
Kev laus ntawm APF (nquag siv fais fab lim) inverter lim lim hauv kev ua rau muaj kev ua phem ntawm lub zog igb. Raws li lub sijhawm ua haujlwm sau cia, hloov chaw poob ntawm ApBT maj mam nce, uas yog los ntawm 1.8v rau saum 2.5v) thiab txo qis hauv kev hloov ceev. Nyob rau tib lub sijhawm, thaum lub peev xwm capacitance muaj nuj nqis rau ntau dua 15%, nws yuav cuam tshuam ncaj qha rau cov lus teb ntawm apf nquag lim.
Ii. Kev tsis zoo ntawm kev tswj cov txheej txheem kev ua haujlwm
Kev laus ntawm lub Tuam Txhab Tswj ntawm APF (nquag siv fais fab lim) tuaj yeem ua rau txo qis ntawm qhov raug ntawm Harmonic kev them nyiaj. Qhov poob qis hauv kev suav lub zog ntawm DSP (digital teeb liab processor) nti tau pom tias yog qhov nce ntxiv 100 μs), thiab muaj nce ntxiv ntawm cov kev sib txawv ntawm PWM WURM. Thaum lub xoom point drift ntawm lub sensor tam sim no tshaj ± 1% ntawm tus nqi ntsuas, nws yuav ua rau muaj kev sib txawv ntawm cov nyiaj them tam sim no. Cov kev laus no tshwm sim tau tshwj xeeb yog pom tseeb nyob rau hauv cov xwm txheej ntawm cov kev thauj khoom nquag ua haujlwm, thiab muaj kev qhia kom paub qhov txhaum "kev soj ntsuam ntau dhau".
III. Kev tsom xam ntawm kev txo qis ua haujlwm ntawm tshav kub dissipation system
Qhov kev ua tsis zoo ntawm kev ua yeeb yam ntawm cov kiv cua txias thiab cov cua sov yog ib tus yam ntxwv uas raug ntawm kev laus ntawm apf nquag lim. Thaum cov kabmob cov kabmob ua rau cov kiv cua ceev kom poob los ntawm ntau dua 20%, tshav kub dissipation txuag tau tsawg. Thaum cov tshav kub tog yog them nrog hmoov av (nrog ib tug tuab tshaj 2 hli), cov thermal kuj nce qib li 35%, ua rau muaj kev kub siab txuas ntxiv ntawm IGBT. Cov ntaub ntawv ntsuas qhia tau tias lub neej pabcuam ntawm lub lim apf nquag nrog 40%, thiab qhov tsis ua haujlwm yuav nce ntxiv los ntawm ntau dua peb zaug.
IV. Kev laus zuj zus ntawm kev sib txuas
Cov kev ua kom paub zoo ib yam xws li oxidation ntawm cov ntsiab lus sib txuas thiab xoob fastPread hauv apf (nquag ua haujlwm uas tau ua haujlwm ntau tshaj 5 xyoos. Qhov nce ntawm 50mω nyob rau hauv kev sib chwv tiv thaiv yuav ua rau lub chaw ntsuas kub hauv zos kom ntau dua 15k. Kev tawg ntawm lub rwb thaiv tsev txheej ntawm lub fais fab cable (nrog qhov tob tawg tshaj 0.5mm) tej zaum yuav ua rau inter {}} theem luv luv.
V. Kev Ntsuas Cov Laus
Kev ntsuas kev laus ntawm Apf cov lim dej hauv Apf ({{{{{0%), thiab tswj kev txhim kho lub xeev (HD txhim kho kev txheeb ze)
Hais txog qhov teeb meem laus ntawm APF (nquag siv fais fab lim) pab kiag li lawm, nws raug nquahu kom tsim kev tiv thaiv kev tiv thaiv kev tiv thaiv kev tiv thaiv kev tiv thaiv. Los ntawm kev tshawb xyuas ib txwm muaj cov ntsiab lus tseem ceeb, ua raws kev ua haujlwm nrawm, ua kom muaj kev txhawb nqa kom zoo, kom ua tau zoo rau kev txhawb nqa lub zog rau lub zog tswj hwm rau lub zog hluav taws xob.