VFD e entsoe ka eng

A variable frequency drive (VFD) ke sesebelisoa sa elektroniki se laolang lebelo le torque ea koloi ea motlakase ka ho fetola maqhubu le voltage ea matla a fanoeng ho eona. Li-VFD, tse tsejoang hape e le li-drive tsa AC kapa li-drive frequency drive, li sebelisetsoa ho ntlafatsa ts'ebetso ea makoloi, ho boloka matla, le ho ntlafatsa taolo ea ts'ebetso lits'ebetsong tse fapaneng.

Ho na le mabaka a mangata a ho lokisa lebelo la enjene.
Ka mohlala:

Boloka matla le ho ntlafatsa ts'ebetso ea sistimi
Fetolela matla a ho sebelisoa lebasetere
Fetola lebelo la koloi ho latela litlhoko
Fetola torque ea koloi kapa matla ho sebetsana le litlhoko
Ntlafatsa tikoloho ea mosebetsi
Fokotsa maemo a lerata, joalo ka lifenehi le lipompo
Fokotsa khatello ea kelello mochining le ho lelefatsa bophelo ba ts'ebeletso
Fokotsa tšebeliso e phahameng ea motlakase, qoba ho nyoloha ha theko ea motlakase, le ho fokotsa boholo ba koloi e hlokahalang

 

Melemo ea mantlha ea ho sebelisa drive frequency drive ke efe?

Motlakase o feto-fetohang o lokisa phepelo ea motlakase hore e tsamaellane le tlhoko ea matla ea lisebelisoa tse tsamaisoang, e leng mokhoa oa ho boloka matla kapa tšebeliso e ntlafalitsoeng ea matla.
Ts'ebetsong ea setso e otlolohileng (DOL), moo enjene e lulang e matha ka lebelo le felletseng ho sa tsotelehe tlhoko ea 'nete, mochini o feto-fetohang oa maqhubu o ka fokotsa tšebeliso ea matla haholo. Ka ho feto-fetoha ha maqhubu a koloi, ho boloka motlakase kapa mafura a 40% ho tloaelehile. Phello ea snowball e bolela hore ho sebelisa mochine o fapaneng oa maqhubu ho ka boela ha thusa tsamaiso ho fokotsa mocheso oa NOx le CO2.

Li-VFD tsa kajeno li kopanya marang-rang le tlhahlobo bakeng sa taolo e betere le tlhahiso e kholoanyane. Kahoo ho boloka matla, taolo e bohlale ea makoloi, le maqhubu a phahameng a fokotsehileng - tsena ke melemo ea ho khetha VFD joalo ka molaoli oa sistimi ea koloi ea hau.

Li-VFD li sebelisoa haholo ho laola li-fan, lipompo, le li-compressor, tse etsang karolo ea 75% ea lits'ebetso tsa VFD lefatšeng ka bophara.

Li-starter tse bonolo le li-contact tsa mohala o felletseng ke tse peli tsa lilaoli tse bonolo tsa makoloi. Starter e bonolo ke sesebelisoa sa boemo bo tiileng se fanang ka lebelo le bonolo, le laoloang la enjene ho tloha qalong ho ea ho lebelo le felletseng.