Mfundo Yogwirira Ntchito ya Oyambitsa Ofewa (Kufotokozera Kwaukadaulo kwa Kulankhulana Kwaukadaulo Kwamalonda Akunja)

A choyambira chofewa (Chisipanishi: arrancador suave) ndi chipangizo chowongolera ma mota a AC induction, omwe ntchito yake yayikulu ndi kuti muyambe ndi kuyimitsa mota popanda kuwononga mphamvu zambiri poyendetsa bwino magetsi a injiniImapewa kuwonongeka kwa ma mota, ma gridi amagetsi, ndi zida zonyamula katundu zomwe zimachitika chifukwa cha mphamvu yamagetsi yolowa kwambiri panthawi yoyambira mwachindunji, ndipo imagwiritsidwa ntchito kwambiri mu Zipangizo Zamakampani monga mapampu, mafani, ma compressor, ndi ma conveyor.

Mfundo Yogwirira Ntchito Yaikulu: Kulamulira Ma Ramp a Voltage (Njira Yodziwika Kwambiri)

Gawo lalikulu la Choyambira Chofewa ndiTriackapena gawo la thyristor lotsutsana ndi kufanana(magulu awiri a thyristors olumikizidwa motsatizana kuti akwaniritse kuyendetsa mphamvu ya AC m'njira ziwiri). Malingaliro ake ogwira ntchito amachokera pa mfundo ya "voltage gradient", ndi njira yeniyeni motere:

1. Gawo Loyambira:

• Pamene injini yalumikizidwa ku Magetsi, choyambira chofewa chimawonjezera pang'onopang'ono ngodya yoyendetsera (ntchito yozungulira) ya thyristor kudzera mu circuit yowongolera zamagetsi, kotero kuti voltage yomwe imagwiritsidwa ntchito ku mota stator winding ikwere kuchokera pa 0 kupita ku voltage yoyesedwa (voltage rise curve ikhoza kukhazikitsidwa, monga linear kapena exponential).
• Mphamvu ya injini imagwirizana ndi sikweya ya mphamvu yamagetsi (T∝U²). Mphamvu yamagetsi ikakwera pang'onopang'ono, mphamvu yamagetsi imawonjezekanso bwino, ndipo liwiro la injini limathamanga pang'onopang'ono kuchokera pa mpumulo kupita ku liwiro loyesedwa (nthawi zambiri masekondi 3-30, losinthika malinga ndi katundu).
• Poyerekeza ndi kuyambika mwachindunji (komwe magetsi amayikidwa nthawi yomweyo pamtengo woyesedwa, ndipo mphamvu yoyambira imatha kufika nthawi 5-8 kuposa mphamvu yoyesedwa), choyambira chofewa chingachepetse mphamvu yoyambira kufika nthawi 1.5-4 kuposa mphamvu yoyesedwa, zomwe zimachepetsa kwambiri mphamvu yamagetsi.

2. Gawo Logwira Ntchito:

• Mota ikafika pa liwiro lovomerezeka, thyristor ya choyambira chofewa imakhala ikugwira ntchito mokwanira (yofanana ndi dera lalifupi), ndipo motayo imalumikizidwa mwachindunji ku gridi yamagetsi kuti igwire ntchito. Pakadali pano, choyambira chofewa sichigwiritsa ntchito mphamvu zambiri, kupewa kutentha kwa nthawi yayitali.
• Mitundu ina yapamwamba imakhala ndi cholumikizira cha bypass. Pambuyo poyambitsa, cholumikizira chimakoka kuti chilowe m'malo mwa thyristor kuti ipititse patsogolo kuyendetsa, zomwe zimapangitsa kuti kudalirika kukhalepo komanso kuchepetsa kutayika.

3. Gawo Loyimitsa:

• Pambuyo polandira chizindikiro choyimitsa, choyambitsa chofewa chimachepetsa pang'onopang'ono ngodya yoyendetsera ya thyristor, zomwe zimapangitsa kuti magetsi a terminal ya mota atsike pang'onopang'ono, ndipo liwiro limatsika bwino mpaka kuyimitsa (Malo Ofewa OyimitsaIzi zimapewa kusokonezeka kwa katundu komwe kumachitika chifukwa cha kuyima mwadzidzidzi (monga kugwedezeka kwa madzi ndi kutsetsereka kwa ma conveyor).

Zinthu Zaumisiri Zofunika Kwambiri (Zosinthidwa kuti Zigwirizane ndi Kulankhulana kwa Magawo Aukadaulo a Zamalonda Zakunja)

1. Kuletsa Kwatsopano Koyambira: Mwa kukhazikitsa malire oyambira amagetsi, zimaletsa kutsika kwa magetsi amagetsi amagetsi ndipo zimateteza kuzungulira kwa injini ku mphamvu yamagetsi yayikulu.
2. Kusintha kwa Mphete ya Voltage: Nthawi yokwera kwa magetsi (masekondi 0-30) ikhoza kukhazikitsidwa kuti igwirizane ndi mawonekedwe osiyanasiyana a katundu (monga, nthawi yayitali yokwera imafunika poyambira katundu wolemera).
3. Ntchito Zoteteza: Zimagwirizanitsa Chitetezo Chodzaza Zinthu, chitetezo cha kutayika kwa gawo, chitetezo cha overvoltage/undervoltage, chitetezo cha kutentha kwambiri, ndi zina zotero. Zimadula mwachangu magetsi ndi ma alarm ngati pakhala zolakwika.
4. Mitundu Yoyenera ya Magalimoto: Yoyenera ma motors a AC induction a magawo atatu okha (mtundu wa squirrel-cage), osati ma motors a DC, ma motors ogwirizana, kapena ma motors a wound-rotor.
5. Kusiyana ndi ma Inverters (VFD)(Funso Lokhudza Kulankhulana Kwamalonda Akunja):

Zochitika Zachizolowezi Zogwiritsira Ntchito (Zogwirizana ndi Kulankhulana kwa Bizinesi Yamalonda Yakunja)

• Mapampu/Mafani: Pewani kusinthasintha kwa gridi yamagetsi komwe kumachitika chifukwa cha kugunda kwa magetsi koyambira, ndipo chepetsani mphamvu ya nyundo yamadzi/kukana mphepo mukayimitsa;
• Ma Compressor/Air Compressors: Chepetsani katundu wa makina poyambitsa ndi kuteteza zinthu monga masilinda ndi ma pistoni;
• Ma Conveyor: Pewani kutsetsereka kwa zinthu poyambira komanso kuletsa kuletsa mabuleki poyimitsa;
• Zipangizo za Makina/Mapampu: Zoyenera makina wamba omwe safuna kulamulira liwiro koma amakhudzidwa ndi kugunda koyambira.

Ngati mukufuna kusintha magawo enaake aukadaulo (monga kuchuluka kwa magetsi, kuchuluka kwa magetsi, kapena njira yowongolera ya mtundu wina wa soft starter) kuti mulumikizane ndi malonda akunja (monga kumasulira imelo, kutanthauzira magawo), chonde perekani zomwe zili mkati mwake kuti zikuthandizeni!