Motoci masu Sauƙaƙe (VFDs): Cikakken Kula da Motoci da Kariya

Motoci masu Sauƙaƙe (VFDs): Cikakken Kula da Motoci da Kariya

Gabatarwa

Motoci masu canzawa (VFDs) kayan aiki ne masu ƙarfi waɗanda aka tsara don haɓaka aiki da ingancin injinan da aka yi niyya da farko don aiki mai sauri ɗaya. Bayan aikinsu na farko, VFDs suna taka muhimmiyar rawa wajen kiyaye injiniyoyi daga kewayon kuskure masu yuwuwa, gami da wuce gona da iri, wuce gona da iri, rashin ƙarfi, ƙasa, tsayawa, juyewar lokaci, kuskuren ƙasa, da gajerun wando-zuwa-lokaci. A cikin tsarin wutar lantarki na matakai uku, haɗin kai na VFDs na iya haifar da ingantaccen riba mai mahimmanci, sanya su azaman mafita mai inganci mai tsada a cikin masana'antu daban-daban.

Amfanin VFDs

VFDs suna ba da fa'idodi da yawa, tare da tanadin makamashi kasancewa sananne, ya danganta da takamaiman aikace-aikacen. Ana amfani da su da yawa a cikin magoya bayan centrifugal, famfo, compressors, da duk wasu ƙayyadaddun aikace-aikacen mota. Ta haɓaka ingantaccen injin AC, VFDs suna ba da gudummawa ga tsawon rayuwar aiki da rage buƙatun kulawa. Bugu da ƙari, madaidaicin sarrafa saurin yana rage kurakuran aiki da sharar gida. Idan aka yi la'akari da iyawarsu ta ceton makamashi, za a iya samun dawowar saka hannun jari a cikin VFDs a cikin ɗan gajeren lokaci, kama daga ƴan watanni zuwa ƴan shekaru.

Ƙarin Bayani don Shigar VFD

Shigar da VFD ya ƙunshi fiye da haɗa shi da motar kawai. Dangane da ƙayyadaddun buƙatun, ƙarin abubuwan da aka haɗa kamar masu tacewa na kutse na lantarki, matattarar mitar rediyo, manyan wuraren rufewa, sabbin igiyoyi, ko na'urori masu ɗaukar nauyi na layi na iya zama dole. Keɓance VFD tare da fasali kamar fitilun matukin jirgi, kewayawa, na'urorin rage jituwa, masu hana wutar lantarki na wucin gadi (TVSS), ko filtar dv/dt kuma ana ba da shawarar don tabbatar da kyakkyawan aiki. Yin watsi da waɗannan abubuwan haɓakawa na iya haifar da rashin aikin aiki ko ma lalacewar mota.

Abubuwan da za a yi la'akari lokacin zabar VFD

Lokacin zabar VFD don aikace-aikacen wutar lantarki mai matakai uku, dole ne a yi la'akari da abubuwa da yawa:

• Cikakken Load Amps (FLA): Mahimmanci don zaɓar VFD mai girman da ya dace.
• Wutar lantarki: Zaɓuɓɓuka sun haɗa da 208 VAC, 230/240 VAC, ko 460/480 VAC.
• Bambancin Wutar Lantarki/Yawaita
• Turi Belts
• RPMs
• Nau'in lodi
• Gudun Gudu
• Torque da ake buƙata
• Yawaita Ƙarfin Yanzu
• Hanyar sarrafawa
• Inverter Rating

Ayyukan VFD

Na'urorin lantarki da ke cikin VFD suna jujjuya halin yanzu lokaci-lokaci zuwa DC ta amfani da diodes, sannan amfani da capacitors don samar da fitarwar AC da ake so. Wannan pulsed ikon yana kwaikwayon AC halin yanzu. VFDs suna goyan bayan ayyukan tuƙi guda huɗu:

• Motoci na gaba (gudu mai kyau da karfin juyi)
• Juya mota (mara kyau gudun da karfin tsiya)
• Birki na gaba (tabbataccen saurin gudu da karfin juyi mara kyau)
• Juya birki (mara kyau gudun da tabbataccen juyi)

Farawa & Tsayawa ta atomatik

Yawancin VFDs an tsara su don farawa ta atomatik, farawa tare da ƙananan mitoci da ƙarfin lantarki don hana inrush igiyoyin ruwa da al'amuran inji masu alaƙa da farawa kai tsaye akan layi. Saitin wayoyi yayi kama da raka'a-lokaci ɗaya amma tare da jujjuyawar jagora. Sanya L1, L2, da L3 a cikin ɗan kwangila yana ƙaddamar da tuƙi kuma yana jujjuya fitarwa zuwa saurin da ake so, yana ba da damar injin don haifar da juzu'i mai mahimmanci. Lokacin tsayawa, mita da ƙarfin lantarki suna raguwa a hankali har sai motar ta mutu.