Abahlinzeki beyunithi yamabhuleki banikhumbuza ukuthi ngokuthuthuka ngokushesha kobuchwepheshe be-electronics kagesi, ubuchwepheshe bekhompyutha, nobuchwepheshe bokulawula okuzenzakalelayo, ubuchwepheshe bokudluliswa kukagesi bubhekene noguquko olusha. Emkhakheni wokudluliswa kukagesi, amasistimu okulawula isivinini esishintshashintshayo aseyinsakavukela ngenxa yokusebenza kahle kwawo okuphezulu nokusebenza kahle. Izuza emasu anjengokongiwa kwamandla, ukunciphisa ukungcola, nokuvikelwa kwemvelo eluhlaza, njengesisetshenziswa esibalulekile sokulawulwa kwesivinini esishintshashintshayo, imboni ye-variable frequency drive isiphenduke enye yezimboni ezinamandla amakhulu emakethe eminyakeni ezayo. Kuhambisana nocwaningo kanye nokusetshenziswa kwemisebenzi ye-variable frequency drive. Ngezansi amanye amathiphu ohlelo lokusebenza lwamadrayivu ahlukahlukene.
1. Izintambo ezivikelekile kufanele zisetshenziselwe isignali kanye nemigqa yokulawula ukuvimbela ukuphazamiseka. Uma umugqa umude, njengokugxuma kwebanga elingu-100m, ingxenye enqamulayo yocingo kufanele inwetshwe. Izintambo zesiginali nokulawula akufanele zibekwe endaweni efanayo yekhebula noma ibhuloho njengezintambo zikagesi ukuze kugwenywe ukugxambukela. Kungcono ukuwabeka emiseleni ukuze afaneleke kangcono.
2. Isignali yokudlulisela ngokuyinhloko isebenzisa amasignali amanje, njengoba amasignali amanje awancishiswa kalula noma aphazamiseke. Kuzinhlelo zokusebenza ezingokoqobo, ukuphuma kwesiginali ngezinzwa kuyisignali ye-voltage, engaguqulwa ibe isignali yamanje ngesiguquli.
3. Ukulawulwa kwe-loop evaliwe yeziguquli zefrikhwensi ngokuvamile kuhle, okusho ukuthi uma isignali yokufaka inkulu, okukhiphayo nakho kuba kukhulu. Kodwa futhi kukhona umphumela ophambene, okungukuthi, lapho isignali yokufaka inkulu, inani lokukhiphayo liyehla.
4. Uma usebenzisa amasignali okucindezela ekulawuleni iluphu evaliwe, ungasebenzisi izimpawu zokugeleza. Lokhu kungenxa yokuthi izinzwa zesignali yokucindezela zinamanani aphansi, ukufakwa kalula, umthwalo ophansi wokusebenza, kanye nokulungisa iphutha. Kodwa uma kunezidingo zesilinganiso sokugeleza ohlelweni kanye nokunemba kuyadingeka, isilawuli sokugeleza kufanele sikhethwe, futhi imitha yokugeleza efanelekile kufanele ikhethwe ngokusekelwe ekucindezelweni kwangempela, izinga lokugeleza, izinga lokushisa, eliphakathi, isivinini, njll.
5. Imisebenzi eyakhelwe ngaphakathi ye-PLC ne-PID yesiguquli se-frequency ifanele amasistimu anokushintshashintsha kwesignali okuncane futhi okuzinzile. Kodwa-ke, ngenxa yemisebenzi eyakhelwe ngaphakathi ye-PLC neye-PID elungisa kuphela isikhathi esingaguquki phakathi nokusebenza, kunzima ukuthola izidingo zenqubo yoguquko ezanelisayo, futhi ukulungisa iphutha kudla isikhathi.
6. Iziguquli zesignali nazo zivame ukusetshenziswa kumasekhethi aseduze weziguquli zefrikhwensi, ngokuvamile ezihlanganisa izici zeHholo namasekhethi kagesi. Ngokusho kokuguqulwa kwesignali nezindlela zokucubungula, zingahlukaniswa zibe iziguquli ezihlukahlukene ezifana ne-voltage kuya yamanje, yamanje ku-voltage, i-DC kuya ku-AC, i-AC kuya ku-DC, i-voltage kuya kufrikhwensi, yamanje ukuya kumafrikhwensi, okukodwa kokuphuma okuningi, okuphindwe kabili kokukodwa, ukweqa isignali, ukuhlukaniswa kwesignali, njll.
7. Uma usebenzisa i-frequency converter, ngokuvamile kuyadingeka ukuyihlomisa ngamasekhethi aseduze, okungenziwa ngalezi zindlela ezilandelayo:
(1) Isifunda esisebenzayo esinengqondo esakhiwe ama-relay azenzele wona kanye nezinye izingxenye zokulawula;
(2) Thenga amasekhethi angaphandle eyunithi esenziwe ngomumo;
(3) Khetha isilawuli esilula esihlelekayo;
(4) Uma usebenzisa imisebenzi ehlukene yesiguquli sefrikhwensi, amakhadi okusebenza angakhethwa;
(5) Khetha izilawuli ezihlelekayo ezincane nezimaphakathi.
8. Ukunciphisa imvamisa yesisekelo kuyindlela ephumelela kakhulu yokwandisa i-torque yokuqala. Ukuhlaziywa komgomo kungokulandelayo.
Ngenxa yokwanda okuphawulekayo kokuqala kwe-torque, okunye okunzima ukuqalisa amathuluzi afana nama-extruder, imishini yokuhlanza, okomisa ama-spin, izixube, imishini yokumboza, izixube, izifeni ezinkulu, amaphampu amanzi, ama-Roots blowers, njll. konke kungaqalwa kahle. Lokhu kusebenza kangcono kunokujwayelekile ukukhulisa imvamisa yokuqala yokuqala. Ngokusebenzisa le ndlela futhi uyihlanganise nezinyathelo zokushintsha kusukela emthwalweni osindayo ukuya ekulayisheni okulula, ukuvikelwa kwamanje kunganyuswa kuze kube senani eliphakeme, futhi cishe yonke imishini ingaqalwa. Ngakho-ke, ukunciphisa imvamisa yesisekelo ukwandisa i-torque yokuqala kuyindlela ephumelela kakhulu futhi elula.
(1) Uma usebenzisa lesi simo, imvamisa yesisekelo akudingekile ukuthi yehle ibe ngu-30Hz. Ingehliswa kancane kancane njalo ngo-5Hz, inqobo nje uma imvamisa efinyelelwe ukuncipha ingaqala isistimu.
(2) Umkhawulo ophansi wemvamisa yesisekelo akufanele ube ngaphansi kuka-30Hz. Ngokombono we-torque, umkhawulo ophansi ophansi, i-torque enkulu. Kodwa-ke, kufanele futhi kucatshangelwe ukuthi i-IGBT ingase yonakaliswe lapho i-voltage ikhuphuka ngokushesha kakhulu futhi i-du/dt eguqukayo inkulu kakhulu. Umphumela wangempela wokusetshenziswa ukuthi lesi silinganiso sokuthuthukisa itorque singasetshenziswa ngokuphepha nangokuzethemba lapho imvamisa yehla isuka ku-50Hz iye ku-30Hz.
(3) Abanye abantu bakhathazekile ngokuthi, isibonelo, lapho imvamisa yesisekelo yehliswa ibe ngu-30Hz, i-voltage isivele ifinyelele ku-380V. Ngakho-ke, lapho ukusebenza okuvamile kungase kudinge ukufinyelela ku-50Hz, kufanele i-voltage ephumayo igxumele ku-380V ukuze injini ingakwazi ukumelana nayo? Impendulo iwukuthi ngeke kwenzeke into enjalo.
(4) Abanye abantu bakhathazekile ngokuthi uma i-base frequency yehla iye ku-30Hz, i-voltage isivele ifinyelele ku-380V. Ngakho-ke, ukusebenza okuvamile kungase kudinge imvamisa yokuphuma engu-50Hz ukuze kufinyelelwe imvamisa elinganiselwe engu-50Hz. Impendulo iwukuthi imvamisa yokuphumayo ingafinyelela ku-50Hz.