Kugwiritsa Ntchito Kwatsopano kwa Inverter mu Magalimoto Osaphulika

Kuti injini igwire ntchito mosinthasintha liwiro, ukadaulo wa inverter umagwiritsidwa ntchito kwambiri mu injini yotetezeka kuphulika. Monga chipangizo, inverter imatha kusintha mphamvu yamagetsi yamagetsi (50Hz kapena 60Hz) kukhala magetsi osiyanasiyana a AC, kuti injiniyo igwire ntchito mosinthasintha liwiro. Chipangizochi chimaphatikizapo dera lowongolera lowongolera dera lalikulu; dera lokonzanso magetsi kuti lisinthe mphamvu yosinthira magetsi kukhala mphamvu yolunjika; dera lapakati la DC limagwiritsidwa ntchito kusalala ndikusefa zotuluka za dera lokonzanso magetsi; dera la Inverter, lomwe limagwiritsidwa ntchito kusintha mphamvu yolunjika kukhala mphamvu yosinthasintha. Mu ma frequency converters ena omwe amafunika kuchita ntchito zambiri, ndikofunikiranso kukhala ndi CPU yowerengera mphamvu ndi dera lofanana. Posintha mphamvu yamagetsi ya stator winding ya galimoto, malamulo a liwiro la liwiro lamagetsi amatha kukwaniritsa cholinga cha malamulo a liwiro.

Inverter Malinga ndi njira zosiyanasiyana zogawira, imatha kugawidwa m'magulu awiri: inverter yamagetsi ndi inverter yamagetsi, inverter yowongolera ya PAM, inverter yowongolera ya PWM ndi inverter yowongolera ya PWM yonyamula pafupipafupi, inverter yowongolera ya V/f, inverter yowongolera pafupipafupi komanso inverter yowongolera vekitala, inverter yayikulu, inverter yapadera yogwira ntchito, inverter yamagetsi yamagetsi, inverter yamagetsi yamagetsi yamagetsi ndi inverter yamagetsi ...

Mu chosinthira ma frequency, VVVF imatanthauza kusintha kwa ma voltage ndi ma frequency, pomwe CVCF imatanthauza ma voltage osasinthasintha ndi ma frequency osasinthasintha. Mu magetsi a AC omwe amagwiritsidwa ntchito m'maiko padziko lonse lapansi, kaya m'nyumba kapena m'mafakitale, ma voltage ndi ma frequency nthawi zambiri amakhala 400V/50Hz kapena 200V/60Hz(50Hz). Chipangizo chomwe chimasintha magetsi otere kukhala magetsi kapena ma frequency variable AC power supply chimatchedwa "frequency converter". Kuti apange ma voltage ndi ma frequency osinthika, chipangizocho choyamba chimayenera kusintha alternating current kukhala direct current (DC).

Chosinthira ma frequency chimagwiritsidwa ntchito kuwongolera mota ndipo chimatha kusintha magetsi ndi ma frequency onse. Malinga ndi momwe mota ya AC imagwirira ntchito, liwiro n limagwirizana ndi ma frequency f, ndipo liwiro la mota lingasinthidwe bola ngati ma frequency f asinthidwa. Chifukwa chake, chosinthira ma frequency chimazindikira kulamulira liwiro mwa kusintha ma frequency amagetsi a mota, zomwe ndi njira yowongolera liwiro lamagetsi komanso magwiridwe antchito apamwamba.

Pakupanga ma frequency converters, njira zosiyanasiyana zowongolera zasintha, kuphatikizapo:

Sinusoidal pulse width modulation (SPWM) control mode, komwe 1U/f=C;

Njira yowongolera voliyumu ya malo a voliyumu (SVPWM);

Mawonekedwe owongolera mavekitala (VC);

Njira yowongolera mphamvu mwachindunji (DTC);

Kudutsana kwa matrix - njira yowongolera kulowerana, ndi zina zotero.

Pamwambapa, njira yatsopano yogwiritsira ntchito inverter mu injini yolimbana ndi kuphulika yafotokozedwa. Kudzera mu ukadaulo wa inverter, liwiro la injiniyo likhoza kusinthidwa mosavuta, zomwe zimapangitsa kuti ntchito yamphamvu kwambiri komanso yogwira ntchito bwino igwire bwino ntchito m'mafakitale.