Umphakeli weyunithi yempendulo ukukhumbuza ukuthi iziguquli ezivamile ezijwayelekile zisebenzisa amabhuloho e-diode rectifier ukuguqula amandla e-AC abe yi-DC, bese zisebenzisa ubuchwepheshe bokuguqula i-IGBT ukuguqula amandla e-DC abe amandla e-AC ane-voltage eguquguqukayo kanye nefrikhwensi yokulawula amamotho e-AC. Lolu hlobo lwesiguquli sefrikhwensi lungasebenza kuphela kumodi kagesi, ngakho lubizwa ngokuthi i-quadrant frequency converter. Ngenxa yokusetshenziswa kwebhuloho le-diode rectifier kusiguquli se-quadrant frequency frequency, akunakwenzeka ukufeza ukugeleza kwamandla okuqondiswa kabili, ngakho-ke akunakwenzeka ukubuyisela amandla asuka ohlelweni lwempendulo yemoto kugridi yamandla. Kwezinye izinhlelo zokusebenza lapho amamotho kagesi edinga ukunika impendulo amandla, njengamakheshi, ama-hoist, amasistimu ecentrifuge, namayunithi okumpompa, kungenzeka kuphela ukwengeza iyunithi yokubhuleka ukumelana kusiguquli sefrikhwensi yamaquadrant amabili ukuze usebenzise impendulo yamandla evela enjini kagesi. Ngaphezu kwalokho, amabhuloho okulungisa i-diode angabangela ukungcoliswa okukhulu kwe-harmonic kugridi yamandla.
Amamojula wamandla e-IGBT angafinyelela ukugeleza kwamandla okuqondiswa kabili. Uma i-IGBT isetshenziswa njengebhuloho lokulungisa kabusha, amandla ekhompyutha e-DSP anesivinini esikhulu futhi aphezulu asetshenziselwa ukukhiqiza ama-pulses okulawula i-SVPWM. Ngakolunye uhlangothi, ingakwazi ukulungisa isici samandla okokufaka, isuse ukungcoliswa kwe-harmonic kugridi yamandla, futhi yenze inverter ibe "umkhiqizo oluhlaza" ngempela. Ngakolunye uhlangothi, amandla akhiqizwa yimpendulo yemoto kagesi angabuyiselwa emuva kugridi yamandla, kuzuzwe imiphumela yokonga amandla.
Enjinini iyodwa, lokho okubizwa ngamaquadrants amane kubhekisela ejikeni lesici somshini elingasebenza kuwo wonke amaquadrants amane ku-eksisi yezibalo. I-quadrant yokuqala isesimweni sikagesi oya phambili, i-quadrant yesibili isesimweni sokubhuleka impendulo, i-quadrant yesithathu isesimweni sikagesi esibuyela emuva, kanti i-quadrant yesine isesimweni sokuhlehla ukubhuleka. Isiguquli sefrikhwensi esingasebenzisa injini ngamaquadranti amane sibizwa ngokuthi isiguquli sefrikhwensi yamaquadrant amane. Kalula nje, isiguquli esijwayelekile samaquadrant amabili singashayela injini ukuthi ijikelezise iye phambili noma ihlehle. Sebenza ngamaquadranti wokuqala nantathu. Amandla e-kinetic akhiqizwa lapho ama-idles enjini kagesi angamoshwa kuphela. Isiguquli sefrikhwensi yamaquadrant amane (kubhekiselwa ekubhulekini kwenjini kagesi) asikwazi nje kuphela ukushayela injini kuzo zombili izikhombisi-ndlela eziya phambili nangemuva, kodwa futhi nokuguqula amandla e-kinetic enjini lapho ingenzi lutho kumandla kagesi futhi iwubuyisele kugridi yamandla. Yenza injini kagesi isebenze esimweni se-generator. Okuvame ukusetshenziswa kakhulu ezimeni zokuthuthukisa.
Isiguquli sefrikhwensi yamaquadrant amane sihlangabezana nezidingo ezahlukahlukene zohlelo lwezimboni, ikakhulukazi ezifanele imithwalo yamandla enamandla e-inetia ephezulu efana nemishini yokuphakamisa. Imishini ine-inertia GD enkulu ejikelezayo futhi ingeyesistimu yokusebenza eqhubekayo yesikhashana esifushane. Ukwehliswa kwejubane ukusuka kwisivinini esikhulu ukuya kwisivinini esiphansi kukhulu, futhi isikhathi sokubhuleka sifushane, sidinga umphumela oqinile wokubhuleka noma ibhuleki kagesi yesikhathi eside esindayo. Ukuze kuthuthukiswe umthelela wokonga ugesi futhi kuncishiswe ukulahlekelwa kwamandla ngesikhathi senqubo yokubhuleka, amandla okunciphisa ayabuyiselwa futhi abuyiselwe kugridi yamandla, kuzuzwe ukonga amandla kanye nemiphumela yokuvikela imvelo.
Ukusetshenziswa okuvamile kwesiguquli sefrikhwensi yamaquadrant amane kusesimweni esinezici ezingaba khona zomthwalo, njengezikheshi, i-locomotive traction, imishini ye-oilfield kowtowing, ama-centrifuges, njll. Kwezinye izinhlelo zokusebenza zamandla aphezulu, isiguquli sefrikhwensi yamaquadrant amane siyadingeka ukuze kwehliswe ukungcoliswa kwe-harmonic kugridi yamandla.
Izinzuzo zesiguquli sefrikhwensi yamaquadrant amane
1. Uma kuqhathaniswa neziguquli ezijwayelekile zamaquadrant amabili, iyonga amandla kakhudlwana; Isiguquli sefrikhwensi yamaquadrant amane sisebenzisa amamojula e-IGBT njengamadivayisi okulungisa ukuze kuzuzwe ukugeleza kwamandla okuqondiswa kabili. Ngaphandle kwesidingo sanoma imaphi amadivaysi angaphandle, ingakwazi ukubuyisela amandla avuselelwe kugridi yamandla, ifeze umsebenzi wokonga amandla.
2. Nciphisa i-harmonic current ohlangothini lwegridi futhi uzuze isici samandla esiseduze no-1 ngomthwalo ogcwele; Iziguquli zefrikhwensi ezivamile, ngenxa yokusetshenziswa kokulungiswa kwe-diode, zikhiqiza ingxenye enkulu yezingxenye ze-harmonic, ezibangela ukungcoliswa okukhulu kwegridi yamandla, ziphazamise ukusebenza okuvamile kwezinye izinto zokusebenza, futhi zibangele nomonakalo kwamanye amadivaysi. Isiguquli se-quadrant vector frequency converter sisebenzisa amamojula e-IGBT njengamadivayisi okulungisa futhi sikhiqize ama-PWM okulawula ama-pulses anamandla wekhompyutha we-DSP anesivinini esikhulu futhi aphezulu, angalungisa isici samandla futhi aqede ukungcoliswa kwe-harmonic kugridi yamandla, okwenza isiguquli semvamisa sibe "umkhiqizo oluhlaza" ngempela.