Chifukwa chiyani inverter imawonongeka pambuyo pogwira ntchito kwakanthawi?

Makinawo adagwa atagwira ntchito kwakanthawi.Chifukwa chiyani?Kodi ma frequency converter ali ndi cholakwika?Ngati inde, onani bukhuli.Ambiri a iwo ndi over-current and undervoltage.Ngati zili zachilendo, kukangana kwa zida za inverter zoziziritsa mpweya kungakhale kwakukulu ndipo kukana kudzakhala kwakukulu.Sinthani mtengo wapano mochulukirapo kapena torque mochulukirapo.Osasintha kwambiri nthawi imodzi, kutengera mphamvu ya injiniyo.Onani ngati zida zamphamvu kwambiri zimayamba pomwe ma frequency converter ayima, zomwe zimapangitsa kuti zisawonongeke.

Kusanthula ndi mayankho:

Choyamba, nthawi yochepetsera ya frequency converter imayikidwa yayifupi kwambiri.Pamene otembenuza pafupipafupi amakoka katundu wambiri, nthawi yake yochepetsera imayikidwa yaying'ono kwambiri.Panthawi yochepetsera, ma frequency osinthika amatsika mwachangu kwambiri, pomwe inertia yonyamula ndi yayikulu, zomwe zimapangitsa liwiro lenileni la injini kukhala lalitali kuposa liwiro lofanana ndi kuchuluka kwa ma frequency converter, kupangitsa injini kukhala mphamvu zopangira magetsi, zomwe zimapangitsa kuti magetsi olumikizirana a DC pakati pa ma frequency converter akhale okwera kwambiri, kufika pamtengo wocheperako ndikudumpha, Chifukwa chake, ma converter akulu pafupipafupi amakhala ndi zida zosinthira mawu.

Chachiwiri, pamene ma motors angapo amayendetsa katundu womwewo, chifukwa palibe kugawa katundu, pamene liwiro lenileni la injini imodzi likuposa liwiro la nthawi ya galimoto ina, liwiro lalikulu ndilofanana ndi woyendetsa wamkulu, ndipo liwiro lotsika ndilofanana ndi jenereta, yomwe ingayambitsenso vuto lamagetsi.

Chachitatu, chifukwa cha moyo wa capacitor wa ulalo wapakati wa DC wosinthira pafupipafupi, patatha zaka zogwiritsidwa ntchito, mphamvu ya capacitor imachepa, ndipo kuthekera kosintha kwa ulalo wapakatikati wa DC kumagetsi a DC kumachepa, ndipo mwayi wokwera kwambiri ukuwonjezeka.Pogwira ntchito, chinthu chachiwiri ndi chochulukirapo.Tengani chosinthira ladle trolley ya ng'anjo yoyenga rh monga chitsanzo.Imayendetsedwa ndi ma motors awiri okhala ndi katundu womwewo.Kulephera kwa ma alarm a overvoltage nthawi zambiri kumachitika pakagwira ntchito, ndipo chosinthira chomwechi nthawi zambiri chimakhala ma alarm.Kupyolera mu kuyang'ana, mtengo wamagetsi wa ulalo wapakati wa DC wa chosinthira umakhala wokwera kwambiri panthawi yogwira ntchito.Kupyolera mu kusanthula, liwiro lenileni la injini imodzi ndi lalitali kuposa liwiro lenileni la injini ina, ndikupangitsa kuti igwire ntchito m'malo opangira magetsi, Ndipo ulalo wapakati wa DC umawononga gawo ili la mphamvu bwino kwambiri, zomwe zimatsogolera kumagetsi ochulukirapo amagetsi. ulalo wapakati wa DC wa frequency converter, ndipo vuto la over-voltage limanenedwa.