Thaum peb-theem tam sim no ntws mus rau hauv peb-theem symmetrical windings ntawm lub stator ntawm ib lub tshuab hlau nplaum ruaj khov synchronous lub cev muaj zog, lub zog magnetomotive tsim los ntawm cov tam sim no sib xyaw ua ke los ua ib qho kev sib hloov magnetomotive nrog lub amplitude tas li. Vim tias nws qhov amplitude tseem nyob tas li, lub trajectory ntawm no rotating magnetomotive quab yuam tsim ib lub voj voog, hu ua ib ncig rotating magnetomotive quab yuam. Nws qhov magnitude yog raws nraim 1.5 npaug ntawm qhov siab tshaj plaws amplitude ntawm ib zaug -theem magnetomotive quab yuam.
Qhov twg, F yog lub voj voog rotating magnetomotive force (T·m); Fφl yog qhov siab tshaj plaws amplitude ntawm ib zaug -theem magnetomotive force (T·m); k yog qhov tseem ceeb winding coefficient; p yog tus naj npawb ntawm ncej khub ntawm lub cev muaj zog; N yog tus naj npawb ntawm lem hauv series hauv txhua kauj; thiab kuv yog tus nqi zoo ntawm qhov tam sim no ntws los ntawm lub kauj. Txij li thaum qhov kev sib hloov ceev ntawm cov hlau nplaum ruaj khov synchronous lub cev muaj zog yog ib txwm ua kom nrawm nrawm, lub rotor lub ntsiab sib nqus teb thiab cov sib nqus sib nqus teb tsim los ntawm stator ncig rotating magnetomotive quab yuam tseem nyob ruaj khov. Ob qhov sib nqus teb sib cuam tshuam los ua ib qho chaw sib nqus sib nqus hauv huab cua sib txawv ntawm stator thiab rotor. Qhov sib nqus sib nqus no cuam tshuam nrog lub rotor lub ntsiab magnetic teb, tsim ib qho electromagnetic torque Te uas yog tsav los yog impedes lub cev muaj zog tig.
Qhov twg Te yog lub electromagnetic torque (N·m); BR yog lub rotor lub ntsiab magnetic teb (T); thiab Bnet yog qhov sib nqus sib nqus hauv huab cua sib txawv (T). Vim muaj qhov sib txawv ntawm qhov sib txawv ntawm qhov sib nqus sib nqus hauv qhov sib txawv ntawm huab cua thiab lub rotor lub ntsiab magnetic teb, cov hlau nplaum ruaj khov synchronous lub cev muaj zog (PMSM) tuaj yeem ua haujlwm hauv ob qho tib si lub cev muaj zog thiab lub tshuab hluav taws xob. Peb lub xeev kev khiav hauj lwm ntawm PMSM tau pom nyob rau hauv daim duab 3. Thaum cov sib nqus magnetic teb nyob rau hauv cov huab cua sib txawv lags qab lub rotor lub ntsiab magnetic teb, lub generated electromagnetic torque yog opposite rau lub rotor txoj kev sib hloov; nyob rau hauv lub xeev no, lub cev muaj zog yog tsim hluav taws xob. Conversely, thaum lub composite magnetic teb nyob rau hauv cov huab cua sib txawv ua rau lub rotor lub ntsiab magnetic teb, lub generated electromagnetic torque nyob rau hauv tib txoj kev raws li lub rotor rotor; nyob rau hauv lub xeev no, lub cev muaj zog ua hauj lwm raws li ib tug generator. Lub kaum sab xis ntawm lub rotor lub ntsiab magnetic teb thiab cov sib nqus magnetic teb nyob rau hauv cov huab cua sib txawv yog hu ua lub hwj chim lub.
Lub PMSM muaj ob lub ntsiab lus tseem ceeb: ntau -polarized hlau nplaum ruaj khov rotor thiab stator nrog tsim tsim windings. Thaum lub sijhawm ua haujlwm, lub rotating multipolar mus tas li hlau nplaum rotor tsim ib lub sijhawm - sib txawv sib nqus flux hauv huab cua sib txawv ntawm rotor thiab stator. Qhov flux no tsim ib qho kev hloov hluav taws xob ntawm stator winding terminals, yog li tsim lub hauv paus rau kev tsim hluav taws xob. Cov hlau nplaum ruaj khov synchronous lub cev muaj zog sib tham ntawm no siv lub nplhaib- zoo li cov hlau nplaum ruaj khov rau ntawm lub ferromagnetic core. Internal magnet synchronous motors tsis suav hais tias yog ntawm no. Vim hais tias embed hlau nplaum rau hauv electroplated ferromagnetic core yog qhov nyuaj heev, los ntawm kev siv cov hlau nplaum uas tsim nyog (500 μm) thiab siab -cov ntaub ntawv sib nqus hauv cov rotor thiab stator cores, qhov sib txawv ntawm huab cua tuaj yeem ua rau loj heev (300 ~ 500 μm) yam tsis muaj kev ua haujlwm tseem ceeb. Qhov no tso cai rau cov stator windings nyob rau hauv ib qho chaw nyob rau hauv cov huab cua sib txawv, yog li zoo heev simplifying lub manufacturing ntawm mus tas li hlau nplaum synchronous motors.