Chifukwa chiyani ma mota a ma frequency osinthasintha ali ndi kapangidwe ka rotor ya khola?

Rotor ya balamotaIli ndi choletsa cholumikizidwa motsatizana ku rotor, kotero kuti motayo ili ndi torque yoyambira yayikulu mokwanira komanso torque yaying'ono kwambiri yoyambira (multiple ya starting current ndi yofanana ndi multiple ya starting torque), ndipo imathanso kukwaniritsa ntchito yolamulira liwiro laling'ono.

Ma mota osinthasintha amatha kugwira ntchito zoyambira ndi zowongolera liwiro posintha ma frequency. Mwachidule, liwiro kuyambira 0 mpaka infinity likhoza kusinthidwa bwino, koma kwenikweni, liwiro lotsika limakhudzana ndi mawonekedwe otsika a ma frequency a mota, ndipo liwiro lalikulu limachepetsedwa ndi liwiro logwira ntchito la bearing limit; Malo otetezeka ogwirira ntchito ndi kuyambira 0 mpaka liwiro loyesedwa, lomwe lingagwire ntchito mochepera kapena mofanana ndi torque yoyesedwa, komanso kuyambira liwiro loyesedwa mpaka liwiro lalikulu, lomwe lingagwire ntchito mochepera kapena mofanana ndi mphamvu yoyesedwa. Chifukwa chake, mota yosinthasintha imakhala ndi torque yokhazikika kuyambira 0 mpaka liwiro loyesedwa komanso yokwera kuposa liwiro loyesedwa. Makhalidwe owongolera liwiro la mphamvu yokhazikika.

Kuchokera ku kusanthula kapangidwe ka injini, injini ya khola ili ndi kapangidwe kosavuta, sikovuta kupanga, ndipo ndi yamphamvu kwambiri pankhani ya mphamvu ya makina. Imazindikira ntchito zoyambira zofewa komanso zowongolera liwiro kudzera mu chosinthira ma frequency, ndipo liwiro lake lalikulu ndi lalikulu kwambiri kuposa la rotor yozungulira ya magawo atatu. Kapangidwe ka injini ndi commutator Injini ya DC ndi kapangidwe ka injini yoyendetsa liwiro losinthasintha komanso yodalirika.

Mwachidziwitso, mota ya wound rotor imatha kugwira ntchito pafupipafupi zosiyanasiyana, koma wound rotor imataya makhalidwe abwino kwambiri a kukana kwakunja koyambira ndi kulamulira liwiro. Kuyamba kofewa kwa njira yosinthira pafupipafupi ndi kochepa kwambiri poyerekeza ndi mota ya squirrel cage (kukana kwa wound rotor ndi kochepa, ndipo torque yoyambira ndi yochepa), ndi mphepo ya rotor Pali zoopsa zobisika za zolakwika zamagetsi monga ma turn-to-ground ndi phase-to-phase short circuits ndi high-speed shed. Vuto lodalirika ndi lochepa kwambiri poyerekeza ndi rotor ya solid squirrel cage. Chifukwa chake, kuwonjezera pa majenereta a asynchronous olamulidwa ndi liwiro kawiri kapena ma motor a asynchronous olamulidwa ndi liwiro mkati, ma winding Line rotor motors nthawi zambiri sagwiritsa ntchito magetsi a variable frequency.