Yuav ua li cas tsis ua hauj lwm yuav hloov pauv zaus fais fab mov ua rau lwm yam khoom siv? yuav tiv thaiv li cas
Kev hloov pauv ntawm cov khoom siv hluav taws xob feem ntau yog siv rau kev sim thiab kev debugging ntawm cov khoom siv hluav taws xob xa tawm thiab cov khoom siv hluav taws xob rau cov cuab yeej precision, uas tau siv dav hauv kev tsim cov khoom siv hauv tsev, khoom siv hluav taws xob, khoom siv IT, thiab lwm yam khoom, thiab lwm yam. yam. Txawm li cas los xij, kev teeb tsa thiab kev ua haujlwm ntawm cov khoom siv hluav taws xob sib txawv yuav muaj kev cuam tshuam rau thiab qee zaus txawm tias tsim teeb meem nrog rau lwm qhov system. Cov ntawv tshwj xeeb twg muaj? Yam kev nyab xeeb twg yuav tsum tau ua?
Hais txog cov khoom siv hluav taws xob cov kev txiav txim siab sib haum xeeb. Txij li yuav luag tag nrho cov khoom siv hluav taws xob sib txawv siv PWM (Pulse Width Modulation) tswj hom, hom kev hloov kho no yuav tsim cov hluav taws xob ntau dua ntawm cov khoom siv hluav taws xob, uas ua rau muaj qhov hloov pauv ntawm qhov hluav taws xob thaum lub zog sib txawv ntawm lub zog ua haujlwm thiab cuam tshuam qhov voltage waveform. distortion ntawm waveform uas muaj qhov tsis zoo.
Txhawm rau zam qhov no, peb xav kom koj siv cov tswv yim hauv qab no: Lub zog hloov pauv zaus yuav tsum tau siv los ntawm lub tshuab hloov pauv tshwj xeeb uas cais tawm ntawm lwm lub tshuab hluav taws xob. Txhawm rau txo qis kev txiav txim siab sib xyaw ua ke, ntxiv cov lim inductor lossis ntau lub voj voog rectifier txuas mus rau qhov sib txawv ntawm lub zog hluav taws xob cov khoom siv sab nraud. Lub choke coil yuav tsum tau txuas nrog nyob rau hauv series upstream ntawm lub capacitor kom txo cov harmonic Cheebtsam, thiab lub inductance ntawm lub choke coil yuav tsum raug soj ntsuam kom raug thiab xam los tiv thaiv kev tsim ntawm inductance thiab capacitive oscillations. High-order harmonic tam sim no yuav ua rau kom lub capacitor tam sim no thiab tsim kom muaj cua sov ntau rau theem capacitor.
Nug txog kev khiav hauj lwm ntau thiab cav overheating. Lub peev xwm txias ntawm tus kheej-txias motors yuav raug txo qis thaum lub sijhawm ua haujlwm qis, ua rau lub cev muaj zog overheating, yog tias qee lub tuam txhab retrofit cov motors uas twb muaj lawm nrog zaus hloov dua siab tshiab thiab ceev tswj. Tsis tas li ntawd, cov zis waveform ntawm qhov sib txawv ntawm cov khoom siv hluav taws xob sib txawv muaj cov kev txiav txim siab siab uas yuav ua rau lub cev muaj zog hlau thiab tooj liab poob. Yog li ntawd, nws raug nquahu kom ua cov haujlwm hauv qab no tom qab kuaj xyuas lub cev muaj zog thiab kev ua haujlwm ntau yam: ua kom lub cev muaj zog qhov kev qhia tshwj xeeb, siv lub cev muaj zog sib txawv rau kev hloov pauv zaus, txwv kev ua haujlwm ntau, thiab zam qhov chaw qis qis.
Hais txog qhov cuam tshuam ntawm high-frequency switching lub siab tshaj plaws voltages ntawm lub rwb thaiv tsev ntawm motors. Tshwj xeeb tshaj yog nyob rau hauv cov ntaub ntawv ntawm qhov sib txawv zaus PWM tswj cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, cov khoom siv hluav taws xob sib txawv ntawm cov khoom siv hluav taws xob sib txawv muaj xws li high-frequency overvoltage, thiab cov high-order harmonic pulse voltages yuav txo cov rwb thaiv tsev ntawm lub cev muaj zog winding. Cov kev ua tau teev tseg hauv qab no tuaj yeem ua tau: Txo qhov txuas txuas ntawm lub cev muaj zog thiab qhov sib txawv ntawm lub zog hluav taws xob. Txhawm rau tswj cov zis hluav taws xob ntawm qhov sib txawv ntawm cov khoom siv hluav taws xob sib txawv, siv cov blocking diodes los txo qhov hluav taws xob surge. Rau cov khoom siv hluav taws xob sib txawv, xav txog kev ntxiv lim rau ntawm lub cev muaj zog input ntaus ntawv.
