Daim ntawv thov ntawm zaus Converter hauv Crane System
Oct 22, 2023
Daim ntawv thov ntawm zaus converter hauv crane system
Nrog rau kev txhim kho kev lag luam sai thiab kev txhim kho txuas ntxiv ntawm kev lag luam thev naus laus zis hauv xyoo tas los no, cranes tau siv ntau dua hauv kev lag luam. Yuav kom ua tau raws li qhov kev thov tas mus li rau cranes hauv kev lag luam, crane tswj tshuab kuj tseem txhim kho tas li. Ntawm lawv, cov zaus hloov pauv tau siv ntau dua hauv cov tshuab crane thiab tau dhau los ua ib qho tseem ceeb ntawm kev tswj cov thev naus laus zis los txhim kho crane kev ua haujlwm thiab kev ua haujlwm zoo.
1. Cov hauv paus ntsiab lus thiab kev faib tawm ntawm cov zaus hloov pauv
Lub zaus converter kho lub zog tso zis ntawm lub cev muaj zog los ntawm kev hloov nws qhov ceev thiab qhov voltage. Nws lub hauv paus ntsiab lus ua haujlwm yog hloov pauv tam sim no mus rau qhov tam sim no ncaj qha, thiab tom qab ntawd hloov cov tam sim no ncaj qha mus rau qhov hloov pauv hloov pauv tam sim no los ntawm inverter los tswj qhov sib txawv voltage, zaus thiab theem ntawm lub cev muaj zog. tus lej kom ua tiav cov kev cai ceev thiab tswj. Kev hloov pauv zaus tuaj yeem siv dav hauv ntau hom motors, xws li peb-theem asynchronous tshuab, ob chav noj cua turbines, cov hlau nplaum ruaj khov synchronous cov cav tov, thiab lwm yam. Qhov laj thawj yog vim li cas lawv thiaj li nrov yog los ntawm kev hloov lub cev muaj zog ceev, nws txo qis. lub zog poob ntawm lub cev muaj zog thiab txhim kho kev ua haujlwm ntawm lub cev muaj zog. Nws txhim kho kev ua haujlwm zoo thiab ua rau lub kaw lus ruaj khov thiab ntse.
Raws li ntau hom motors, zaus converters kuj tau muab faib ua ntau pawg. Feem ntau hais lus, nws tuaj yeem muab faib ua hom hauv qab no:
① Tsawg voltage inverter
Tsawg-voltage inverters xa mus rau inverters nrog qhov tso zis voltage qis dua 1000V thiab tau dav siv nyob rau hauv ntau yam kev lag luam, xws li lub Hoobkas ntau lawm kab, tshuab cuab yeej, cua txias, twj tso kua mis, thiab lwm yam.
② Nruab nrab voltage inverter
Nruab nrab-voltage inverters xa mus rau inverters nrog cov zis voltage ntawm 1000v thiab 10000V. Lawv tsuas yog siv rau hauv cov cuab yeej siv tshuab loj, xws li cov tshuab casting, cranes, cov cuab yeej siv tshuab hnyav, thiab lwm yam.
③ High voltage inverter
Cov zis hluav taws xob ntawm high-voltage inverters yog siab dua 10kV thiab feem ntau yog siv hauv cov motors loj thiab lub teeb rail, subway thiab lwm qhov chaw.
2. Daim ntawv thov ntawm zaus converter hauv crane tswj system
Ntau zaus converters yog dav siv nyob rau hauv crane tswj systems. Nws lub luag haujlwm tseem ceeb yog:
① Kev tswj ceev:Lub converter zaus paub txog kev ceev tswj kev ua haujlwm ntawm lub crane los ntawm kev tswj lub cev muaj zog ceev, tso zis zaus, voltage thiab lwm yam tsis raws li qhov xav tau ntawm lub sensor lossis cov neeg siv kev ua haujlwm. Nws muaj qhov zoo ntawm kev ua haujlwm synchronous, txhim kho efficiency, txo suab nrov thiab txuag hluav taws xob.
② Kev tiv thaiv overload:Cov cranes nquag thauj khoom hloov pauv thiab tsis ua haujlwm thaum ua haujlwm. Lub inverter xyuas qhov system tuaj yeem siv cov khoom tiv thaiv siab heev los tiv thaiv lub cev muaj zog, inverter thiab crane, ua kom ruaj khov thiab txhim khu kev qha thaum ua haujlwm.
③ Lub zog rov qab:Lub tshuab hloov zaus tuaj yeem siv lub zog hloov pauv thiab lub zog kinetic ntawm lub cev muaj zog kom rov qab tau lub zog thaum lub crane nres thiab decelerating, yog li txhim kho lub zog ntawm lub crane system thiab txo kev siv zog.
④ Tswj qhov tseeb:Lub tshuab hloov zaus tuaj yeem ua tiav kev tswj xyuas lub cev muaj zog los ntawm kev tswj hwm thev naus laus zis xws li PWM raws li xav tau, ua rau lub zog ntawm crane ntau dua thiab du, yog li txhim kho kev ua haujlwm thiab raug ntawm crane.
⑤ Soft start:Kev siv cov zaus hloov pauv tuaj yeem ua rau lub crane pib maj mam, kom tsis txhob muaj kev cuam tshuam rau cov neeg kho tshuab thiab electromagnetic cuam tshuam thaum lub sijhawm ua haujlwm ntawm crane, yog li ncua kev pabcuam lub neej ntawm crane thiab lub cev muaj zog.
Nyob rau hauv dav dav, daim ntawv thov ntawm zaus converters nyob rau hauv crane tswj systems pab txhim kho qhov raug thiab efficiency ntawm lub crane, txo lub suab nrov thiab kev co ntawm lub crane, yog li txo tus nqi txij nkawm thiab lub zog noj, thiab txhim kho kev sib tw thiab kev lag luam ntawm crane. .