PMSM Motors: Cov yam ntxwv ua tau zoo tshaj plaws

Piv rau cov pa peb-theem asynchronous motors, cov hlau nplaum ruaj khov synchronous motors (PMSMs motors) muab qhov zoo ntawm qhov pib lub zog siab, lub sijhawm pib luv dua, thiab muaj peev xwm ua haujlwm siab dhau. Raws li qhov xav tau ntawm lub zog tiag tiag, lub peev xwm nruab ntawm lub tshuab tsav tuaj yeem txo qis, txuag lub zog thaum txo cov peev peev. Nyob rau tib lub sijhawm, lawv yooj yim los tswj - lawv qhov ceev tsuas yog txiav txim siab los ntawm cov khoom siv zaus - thiab ua haujlwm tau zoo thiab ntseeg tau yam tsis muaj kev cuam tshuam los ntawm kev thauj khoom lossis qhov hloov pauv voltage, ua rau lawv tshwj xeeb zoo - haum rau kev tswj ntau zaus.

Lawv cov txiaj ntsig tau tshwm sim ntxiv nyob rau hauv qhov tuaj yeem piav qhia tias "ob qhov qis thiab ob qhov siab" - qhov poob qis, qhov kub tsis tshua muaj siab, siab zog, thiab kev ua haujlwm siab. Cov no yog cov yam ntxwv ntawm kev ua tau zoo uas kev lag luam sib zog ua rau, thiab lawv txiav txim siab txoj haujlwm ntawm kev ua lag luamPMSMs motors.

Vim li cas thiaj poob thiab kub nce qis?

Txij li thaum lub magnetic teb ntawm ib tug ruaj khov hlau nplaum synchronous lub cev muaj zog yog tsim los ntawm cov hlau nplaum tas mus li, nws tshem tawm cov excitation losses - uas yog, cov tooj liab poob - uas yuav txwv tsis pub los ntawm excitation tam sim no xav tau los tsim cov magnetic teb. Thaum lub sijhawm ua haujlwm, tsis muaj qhov tam sim no ntws los ntawm lub rotor, uas txo qhov kub ntawm lub cev muaj zog. Raws li kev txheeb cais tsis tiav, nyob rau hauv tib lub sijhawm thauj khoom, qhov kub nce yog kwv yees li 20K qis dua.

High Power Factor thiab High Efficiency

Piv rau asynchronous motors,PMSMs motorsua kom muaj txiaj ntsig zoo dua qub nyob rau hauv lub teeb -load tej yam kev mob. Lawv qhov kev ua haujlwm siab -kev ua haujlwm tau zoo yog qhov dav, tswj kev ua haujlwm tau zoo dua 90% hla kev thauj khoom ntawm 25% mus rau 120%, nrog rau kev ntsuas kev ua tau zoo ua tau raws li qib 1 lub zog ua haujlwm ntawm cov qauv hauv tebchaws tam sim no. Qhov no yog lawv qhov zoo tshaj plaws ntawm asynchronous motors nyob rau hauv cov nqe lus ntawm kev txuag hluav taws xob.

Hauv kev ua haujlwm tiag tiag, cov motors tsis tshua muaj lub zog tag nrho thaum tsav tsheb thauj khoom. Cov laj thawj yog ob npaug. Ntawm ib sab, thaum xaiv lub zog lub cev muaj zog, cov neeg tsim qauv feem ntau pib lawv cov kev suav rau ntawm qhov kev ua haujlwm siab ntawm lub nra, thiab cov xwm txheej hnyav tshwm sim tsis tshua muaj. Tsis tas li ntawd, txhawm rau tiv thaiv lub cev muaj zog burnout nyob rau hauv kev ua haujlwm txawv txav, cov neeg tsim qauv ntxiv nrog rau lub zog paj hauv lawv cov kev suav. Ntawm qhov tod tes, cov neeg tsim khoom siv lub cev muaj zog, kom ntseeg tau tias lub cev muaj zog, feem ntau ntxiv cov khoom siv hluav taws xob ntxiv tshaj li tus neeg siv tau teev tseg. Raws li qhov tshwm sim, feem ntau cov motors hauv kev ua haujlwm tiag tiag khiav qis dua 70% ntawm lawv lub zog ntsuas. Qhov no muaj tseeb tshwj xeeb tshaj yog rau cov kiv cua thiab twj tso kua mis- hom loads, qhov twg motors feem ntau ua haujlwm hauv lub teeb -load cheeb tsam. Rau asynchronous motors, efficiency tsawg heev nyob rau hauv lub teeb -load tej yam kev mob, whereasPMSMs motorstseem tuaj yeem tswj tau qhov ua tau zoo hauv lub teeb -load cheeb tsam.

Lawv muaj lub zog loj uas tsis muaj kev ywj pheej ntawm tus lej ntawm lub cev muaj zog ncej. Nyob rau hauv tag nrho cov load, lub zog qhov tseem ceeb mus txog 1. Qhov no txhais tau hais tias piv rau asynchronous motors, lub cev muaj zog tam sim no me me, uas ua rau qis stator tooj liab poob thiab ntau dua tag nrho efficiency. Nyob rau hauv sib piv, lub hwj chim qhov tseem ceeb ntawm asynchronous motors txo qis raws li tus naj npawb ntawm cov ncej nce. Tsis tas li ntawd, vim muaj lub zog loj, lub peev xwm ntawm cov khoom siv hluav taws xob sib txuas (transformer) tuaj yeem raug txo qis, nrog rau kev txo qis rau cov khoom sib txuas thiab cov cabling.