Nyob rau hauv lub ntiaj teb no ntawm kev lag luam automation, Siemens VFD (Variable Frequency Drive) yog ib qho cuab yeej tseem ceeb uas pab tswj cov tshuab hluav taws xob zoo. Siemens VFDs tau siv dav hauv cov chaw tsim khoom, tsev khaws khoom, thiab ntau qhov chaw vim tias lawv tuaj yeem kho lub cev muaj zog thiab lub zog nrawm, txuag lub zog thiab ua kom lub tshuab ua haujlwm zoo dua. Ob qhov kev tswj hwm lub cev muaj zog siv hauv Siemens VFDs yog Field-Oriented Control (FOC) thiab Direct Torque Control (DTC). Ob lub algorithms pab Siemens VFDs ua haujlwm zoo dua, tab sis lawv muaj qhov sib txawv thiab kev siv. Hauv blog no, peb yuav sib piv FOC thiab DTC hauv Siemens VFDs, piav qhia lawv ua haujlwm li cas, thiab pab koj nkag siab qhov twg yog qhov zoo dua rau kev siv sib txawv.
Siemens VFD yog dab tsi thiab Vim Li Cas Tswj Algorithms tseem ceeb?
Ua ntej, cia peb nkag siab tias Siemens VFD yog dab tsi. Siemens VFD yog ib qho khoom siv hluav taws xob uas tswj qhov ceev thiab lub zog ntawm lub tshuab hluav taws xob los ntawm kev hloov cov zaus thiab qhov hluav taws xob ntawm cov hluav taws xob muab rau lub cev muaj zog. Yog tsis muaj Siemens VFD, feem ntau lub cev muaj zog khiav ntawm qhov nrawm nrawm, uas ua rau lub zog tsis zoo thiab tuaj yeem ua rau lub tshuab puas tsuaj thaum lub sijhawm. Siemens VFDs daws qhov teeb meem no los ntawm kev kho lub cev muaj zog kom haum raws li qhov xav tau ntawm txoj haujlwm-txawm tias nws yog qeeb- siv conveyor siv lossis ceev- lub twj tso kua mis spinning.
Tswj algorithms yog "lub hlwb" ntawm Siemens VFD. Lawv qhia Siemens VFD yuav ua li cas kho qhov zaus thiab qhov hluav taws xob kom tau txais kev ua tau zoo tshaj plaws ntawm lub cev muaj zog. FOC thiab DTC yog ob qho ntawm cov txheej txheem siab tshaj plaws siv hauv Siemens VFDs, thiab xaiv qhov yog yuav ua rau muaj qhov sib txawv loj npaum li cas koj lub tshuab ua haujlwm zoo. Qhov no yog vim li cas thiaj nkag siab qhov txawv ntawm FOC thiab DTC hauv Siemens VFDs yog qhov tseem ceeb heev rau txhua tus neeg ua haujlwm nrog cov cuab yeej siv khoom lag luam.
Teb-Kev Tswj Xyuas Kev Ncaj Ncees (FOC) hauv Siemens VFDs
Field-Oriented Control, tseem hu ua vector tswj, yog qhov nrov tshaj plaws algorithm hauv Siemens VFDs. Nws tau tsim los ua AC motors (hom feem ntau ntawm kev lag luam lub cev muaj zog) ua haujlwm nrog rau DC motors, uas paub txog lawv cov kev tswj kom meej. FOC ua tiav qhov no los ntawm kev sib cais lub cev muaj zog tam sim no rau hauv ob ntu: ib qho uas tsim cov hlau nplaum sib nqus (qhov "thaj chaw") thiab ib qho uas tsim torque (qhov "lub zog"). Los ntawm kev tswj ob qhov chaw sib cais, Siemens VFDs nrog FOC tuaj yeem kho lub cev muaj zog thiab lub zog nrog qhov siab heev.
Txoj Cai Ua Haujlwm ntawm FOC hauv Siemens VFDs
Lub hauv paus ntsiab lus ua haujlwm ntawm FOC hauv Siemens VFDs tsis yog qhov nyuaj heev, txawm tias nws tau nce siab. Nov yog qhov yooj yim tawg: Ua ntej, Siemens VFD ntsuas qhov tam sim no ntws mus rau hauv lub cev muaj zog. Tom qab ntawd, nws siv cov txheej txheem lej los faib qhov tam sim no rau hauv ob qhov sib txawv: cov flux tam sim no (uas ua rau lub cev muaj zog sib nqus) thiab lub zog torque tam sim no (uas ua rau lub cev muaj zog spin). Siemens VFD ces tswj txhua yam ntawm nws tus kheej kom tau txais qhov tseeb ceev thiab lub zog xav tau. Cov txheej txheem no yog hu ua "vector control" vim nws siv lej vectors los sawv cev tam sim no thiab magnetic teb.
Siemens VFDs nrog FOC feem ntau siv cov sensors los ntsuas lub cev ceev thiab txoj hauj lwm, uas pab cov algorithm kho kom raug. Piv txwv li, Siemens SINAMICS V20, tus qauv nrov Siemens VFD, tuaj yeem siv FOC los muab kev tswj kom zoo txawm tias nyob rau hauv qhov qis heev. Qhov no yog ib qho tseem ceeb rau cov ntawv thov xws li siv conveyor lossis cov khoom sib tov, qhov kev sib tw ceev yog qhov tseem ceeb.
Qhov zoo ntawm FOC hauv Siemens VFDs
Muaj ntau qhov zoo rau kev siv FOC hauv Siemens VFDs. Ua ntej, FOC muab kev ceev nrawm thiab tswj lub zog. Qhov no txhais tau hais tias lub cev muaj zog ua haujlwm zoo dua, tsis muaj kev vibration thiab suab nrov. Thib ob, FOC ua haujlwm tau zoo ntawm qhov nrawm nrawm-Siemens VFDs nrog FOC tuaj yeem tuav lub zog tag nrho txawm tias lub cev muaj zog khiav qeeb heev, uas yog qhov zoo tshaj plaws rau cov ntawv thov uas xav tau maj mam txav mus los. Thib peb, FOC yog lub zog- ua haujlwm tau zoo. Los ntawm kev tswj lub cev muaj zog tam sim no kom meej meej, Siemens VFDs nrog FOC pov tseg hluav taws xob tsawg, uas txuag nyiaj ntawm cov nqi hluav taws xob.
Lwm qhov zoo dua yog tias FOC muaj kev ntseeg siab heev. Siemens VFDs paub txog lawv cov kav ntev, thiab FOC pab txuas ntxiv lub neej ntawm VFD thiab lub cev muaj zog los ntawm kev txo cov kev ntxhov siab ntawm cov khoom siv. Qhov no ua rau Siemens VFDs nrog FOC yog qhov kev xaiv zoo rau cov ntawv thov tseem ceeb uas lub sijhawm poob qis tsis yog qhov kev xaiv.
Direct Torque Control (DTC) hauv Siemens VFDs
Direct Torque Control (DTC) yog lwm cov algorithm siab heev siv hauv Siemens VFDs. Tsis zoo li FOC, uas cais lub cev muaj zog tam sim no rau hauv cov khoom siv hluav taws xob thiab lub zog, DTC tswj lub zog thiab sib nqus flux ncaj qha. Qhov no ua rau DTC sai dua thiab yooj yim dua hauv qee txoj hauv kev, vim nws tsis xav tau kev ua lej tib yam li FOC. DTC yog qhov tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov uas xav tau lub sij hawm teb ceev ceev, xws li hauv cov tshuab ntim khoom lossis cov neeg hlau.
Txoj Cai Ua Haujlwm ntawm DTC hauv Siemens VFDs
Lub hauv paus ntsiab lus ua haujlwm ntawm DTC hauv Siemens VFDs yog ncaj qha: lub algorithm tsis tu ncua ntsuas lub cev muaj zog torque thiab sib nqus flux, tom qab ntawd kho qhov voltage thiab zaus muab los ntawm Siemens VFD kom khaws cov txiaj ntsig ntawm qhov xav tau. DTC tsis siv txoj kev hloov pauv vector zoo li FOC. Hloov chaw, nws siv "hysteresis maub los" los hloov kho sai sai -qhov no txhais tau tias Siemens VFD tuaj yeem teb rau cov kev hloov pauv hauv cov khoom yuav luag tam sim ntawd. Piv txwv li, Siemens MM440 series, siv dav Siemens VFD, siv DTC los muab cov sij hawm teb ceev ceev, nrog cov sij hawm ua piv txwv tsawg li 50 microseconds.
Ib qho txiaj ntsig tseem ceeb ntawm DTC txoj cai ua haujlwm yog tias nws tsis tas yuav muaj lub ntsuas ntsuas nrawm hauv qee kis. Qhov no ua rau Siemens VFDs nrog DTC yooj yim rau nruab thiab tswj, vim tias muaj tsawg dua qhov yuav txhawj txog. Qhov no yog qhov zoo dua rau cov ntawv thov uas cov sensors nyuaj rau nruab lossis tswj.
Qhov zoo ntawm DTC hauv Siemens VFDs
DTC muaj ntau qhov tshwj xeeb zoo uas ua rau nws xaiv zoo rau ntau daim ntawv thov Siemens VFD. Qhov zoo tshaj plaws yog nws lub sijhawm teb ceev ceev. Siemens VFDs nrog DTC tuaj yeem kho lub cev muaj zog torque hauv ob peb milliseconds, uas yog nrawm dua li FOC. Qhov no yog qhov zoo tshaj plaws rau cov ntawv thov uas xav tau kev hloov pauv sai hauv kev nrawm lossis lub zog, xws li cov tshuab ntim khoom lossis cov siv conveyor uas pib thiab nres ntau zaus.
Lwm qhov zoo dua yog tias DTC muaj zog dua li FOC hauv qee kis. Nws tuaj yeem tswj tau cov kev hloov pauv hauv lub cev muaj zog lossis tsis muaj kev tswj hwm, uas ua rau Siemens VFDs nrog DTC txhim khu kev qha hauv cov cheeb tsam hnyav. DTC kuj tseem siv software tsawg dua li FOC, uas ua rau Siemens VFD yooj yim rau kev pab cuam thiab daws teeb meem.
FOC vs. DTC: Qhov txawv tseem ceeb hauv Siemens VFDs
Tam sim no peb nkag siab tias FOC thiab DTC ua haujlwm li cas hauv Siemens VFDs, cia peb piv lawv ib sab. Qhov no yuav pab koj xaiv txoj cai algorithm rau koj daim ntawv thov Siemens VFD.
Teb Sijhawm
DTC muaj lub sijhawm teb sai dua li FOC. Siemens VFDs nrog DTC tuaj yeem kho torque hauv 1-5 milliseconds, thaum FOC feem ntau siv 10-20 milliseconds. Qhov no ua rau DTC zoo dua rau cov ntawv thov uas xav tau kev hloov pauv sai, xws li cov neeg hlau lossis cov tshuab ntim khoom. FOC yog qeeb dua tab sis meej dua, uas yog qhov zoo dua rau cov ntawv thov uas xav tau qhov nrawm nrawm.
Precision
FOC yog qhov tseeb dua li DTC. Siemens VFDs nrog FOC tuaj yeem tswj kev ceev thiab lub zog nrog qhov raug siab heev, uas yog qhov tseem ceeb rau kev siv xws li CNC tshuab lossis khoom siv kho mob. DTC tsis tshua muaj meej tab sis nrawm dua, yog li nws zoo dua rau cov ntawv thov uas qhov ceev ntawm cov lus teb yog qhov tseem ceeb tshaj qhov zoo tshaj plaws.
Zog Efficiency
Ob leeg FOC thiab DTC yog lub zog- ua haujlwm tau zoo, tab sis FOC muaj ntug me ntsis. Siemens VFDs nrog FOC tuaj yeem kho lub cev muaj zog tam sim no ntau dua, uas txo cov hluav taws xob pov tseg. Qhov no yog qhov tshwj xeeb tshaj yog rau cov ntawv thov uas khiav mus ntev, xws li twj lossis kiv cua.
Kev txhim kho thiab tu
DTC yooj yim rau nruab thiab tswj dua li FOC. Siemens VFDs nrog DTC feem ntau tsis tas yuav tsum tau ceev sensors, uas txo tus naj npawb ntawm qhov chaw thiab ua rau installation yooj yim dua. FOC feem ntau xav tau cov sensors, uas ntxiv rau kev teeb tsa thiab kev saib xyuas haujlwm. Txawm li cas los xij, Siemens VFDs tau tsim los ua kom yooj yim los tswj tag nrho, tsis hais txog cov txheej txheem.
Tus Tswj Algorithm twg yog qhov zoo tshaj rau koj Siemens VFD?
Kev xaiv ntawm FOC thiab DTC rau koj Siemens VFD nyob ntawm koj daim ntawv thov. Nov yog cov lus qhia yooj yim los pab koj txiav txim siab:
- Xaiv FOC yog: Koj xav tau kev ceev ceev thiab kev tswj lub zog (piv txwv li, CNC tshuab, khoom siv kho mob, thiab cov hlua siv conveyor uas xav tau ceev ceev). Koj yuav tsum tau khiav lub cev muaj zog ntawm tsawg ceev nrog tag nrho torque. Kev siv hluav taws xob yog qhov tseem ceeb tshaj plaws rau kev ua haujlwm ntev -.
- Xaiv DTC yog tias: Koj xav tau lub sij hawm teb ceev (xws li, lub tshuab ntim khoom, cov neeg siv khoom lag luam, cov tshuab pib thiab nres ntau zaus). Koj xav tau yooj yim installation thiab txij nkawm (tsis muaj sensors xav tau). Koj ua haujlwm nyob rau hauv ib puag ncig hnyav uas muaj kev ruaj ntseg tseem ceeb.
Nco ntsoov, ntau Siemens VFD qauv, zoo li Siemens SINAMICS series, muab ob qho tib si FOC thiab DTC, yog li koj tuaj yeem hloov ntawm lawv nyob ntawm koj qhov kev xav tau. Qhov kev hloov pauv no yog ib qho laj thawj vim li cas Siemens VFDs thiaj li nrov hauv kev lag luam.
Xaus
Siemens VFDs yog cov cuab yeej muaj zog rau kev tswj lub cev muaj zog, thiab Field-Oriented Control (FOC) thiab Direct Torque Control (DTC) yog ob qho kev ua haujlwm siab heev uas ua rau lawv zoo dua. FOC yog qhov zoo tshaj plaws rau qhov tseeb, lub zog- tswj tau zoo ntawm qhov nrawm qis, thaum DTC yog qhov zoo tagnrho rau lub sijhawm teb ceev thiab kev saib xyuas yooj yim. Los ntawm kev nkag siab qhov sib txawv ntawm FOC thiab DTC hauv Siemens VFDs, koj tuaj yeem xaiv txoj cai algorithm rau koj daim ntawv thov, txuag lub zog, thiab ua rau koj lub tshuab ua haujlwm zoo dua.
Txawm hais tias koj tab tom siv Siemens VFD rau lub twj tso kua mis me me lossis lub tshuab ua lag luam loj, txoj cai tswj algorithm tuaj yeem ua qhov sib txawv loj. Siemens VFDs yog tsim los ua kom ntseeg tau, ua tau zoo, thiab siv tau yooj yim, thiab FOC thiab DTC tsuas yog ob qho piv txwv ntawm Siemens txuas ntxiv mus tsim kho tshiab hauv kev tswj lub cev muaj zog. Yog tias koj tseem tsis paub meej tias qhov twg yog qhov zoo rau koj Siemens VFD, sab laj nrog Siemens cov neeg siv phau ntawv lossis hu rau tus kws tshaj lij Siemens rau kev taw qhia.
