Abahlinzeki bemishini esekela i-frequency converter bakukhumbuza ukuthi ukuphuma kwe-voltage waveform ngesiguquli sefrikhwensi kufana ne-sine wave, kunegagasi le-sine langempela. I-waveform iqukethe inani elikhulu lezingxenye ze-harmonic, ikakhulukazi i-harmonics ye-oda ephezulu, engakhuphula ukuphuma kwamanje kwesiguquli semvamisa, ibangele ukuthi i-motor winding ishise, ikhiqize ukudlidliza nomsindo, isheshise ukuguga kwe-insulation, futhi kulimaze injini; Ngasikhathi sinye, ama-harmonics amaza ahlukahlukene angakhipha ukuphazamiseka komsakazo wezinhlelo ezahlukahlukene emkhathini, okungase kubangele ukusetshenziswa kabi kwezinye izinto zokusebenza ze-electromechanical.
Ngakho-ke, lapho ufaka isiguquli semvamisa, kuyadingeka ukuthi ucabangele ngokuphelele ibanga phakathi kwegumbi lokulawula elimaphakathi, isiguquli semvamisa, kanye nenjini ukuze kuncishiswe umthelela wama-harmonics futhi kuthuthukiswe ukuzinza kokulawula.
(1) Incazelo yebanga:
1. Vala ububanzi: Ibanga phakathi kwe-converter frequency kanye ne-motor ngu-≤ 20m;
2. Ibanga eliphakathi: Ibanga phakathi kwesiguquli sefrikhwensi kanye nenjini yi-20m kanye ≤ 100m;
3. Ibanga: Ibanga phakathi kwesiguquli sefrikhwensi kanye nenjini likhulu kuno-100m;
(2) Kuzilungiselelo zezimboni:
1. Vala ububanzi: Isiguquli semvamisa kanye nenjini kungaxhunywa ngokuqondile;
2. Ibanga eliphakathi: Isiguquli semvamisa kanye nenjini kungaxhunywa ngokuqondile, kodwa imvamisa yenkampani yenethiwekhi ye-converter frequency idinga ukulungiswa ukuze kuncishiswe i-harmonics nokuphazamiseka;
3. Ibanga elide: I-frequency converter kanye ne-motor ingaxhunywa ngokuqondile, okungadingi nje ukulungisa imvamisa yenkampani yenethiwekhi yesiguquli semvamisa ukuze kuncishiswe i-harmonics nokuphazamiseka, kodwa futhi kudinga ukufaka i-AC rector ephumayo.
(3) Ezimbonini ezizenzakalelayo:
Emafektri asebenza ngokuzenzakalelayo, zonke izinto zokusebenza zidinga ukugadwa futhi zilawulwe egumbini lokulawula eliphakathi. Ngakho-ke, isignali yesistimu yokuguqula imvamisa nayo idinga ukuthunyelwa egunjini lokulawula eliphakathi.
1. Vala ububanzi: Uma isiguquli sefrikhwensi sifakwe egunjini lokulawula elimaphakathi. Ikhonsoli ingaxhunywa ngokuqondile kusiguquli semvamisa futhi ilawulwe ngamasiginali kagesi angu-0-5/10V kanye namasignali athile okushintsha. Kodwa-ke, imisebe ye-electromagnetic yesiginali yokushintsha imvamisa ephezulu yesiguquli semvamisa ingase ibangele ukuphazamiseka okuthile kusiginali yokulawula yamanje ebuthakathaka, ngakho-ke akudingekile ukuba nokubukeka okuhle nokuhlelekile. Ngakho-ke, i-converter ye-frequency kufanele ibekwe ekamelweni eliphakathi lokulawula.
2. Ibanga eliphakathi: libhekisela ebangeni eliphakathi kwesiguquli semvamisa kanye negumbi lokulawula eliphakathi, elingalawulwa futhi lixhunywe kusetshenziswa isignali yamanje engu-4-20mA kanye namanye amanani okushintsha; Uma ibanga liqhubeka, ukuxhumana kwe-RS485 kwe-serial kungasetshenziselwa ukuxhuma;
3. Ibanga elide: okungukuthi, ibanga phakathi kwesiguquli semvamisa kanye negumbi lokulawula eliphakathi likhulu kune-100m. Ngalesi sikhathi, ukuxhumana okudluliselwe okuphakathi kungasetshenziswa ukufeza ibanga elingu-1km; Uma ikude, kudingeka izixhumi ze-fiber optic, ezingafinyelela ku-23km.
Ngokusebenzisa izintambo zokuxhumana ukuze kuxhunywe, kulula ukwakha uhlelo lokulawula ukushayela olunamazinga amaningi, ngaleyo ndlela kuzuzwe izidingo ezifana nenkosi/isigqila nokulawula okuvumelanayo. Ukuxhuma nesistimu ye-fieldbus edumile njengamanje kuzonyusa kakhulu izinga lokuguqulwa kwedatha. Ukunwetshwa kwebanga phakathi kwegumbi lokulawula elimaphakathi kanye nekhabhinethi ye-inverter kunenzuzo yokunciphisa ibanga phakathi kwe-inverter ne-motor, ukuze kuthuthukiswe ukusebenza kwesistimu ngesakhiwo esinengqondo.