Ukulawulwa kwesivinini sokuguqulwa kwemvamisa kuvame ukubhekisa kuhlelo olunjalo lwe-electromechanical: injini yokungenisa isivinini sokuguqulwa kwemvamisa, isilawuli esihlelekayo namanye amadivaysi ahlakaniphile, ama-terminal actuators nesoftware yokulawula, njll., yakha umthetho wejubane we-AC oyiluphu ovulekile noma ovaliwe. uhlelo.Lolu hlobo lwesistimu yokulawula isivinini luthatha indawo yokulawula isivinini komshini kanye nesikimu sokulawula isivinini se-DC esimweni esingakaze sibonwe, esithuthukisa kakhulu izinga lokuzenzakalela komshini nokusebenza kahle kokukhiqiza, futhi kwenze okokusebenza kuqhubeke kuncipha futhi kuhlakaniphe.
Uma ubheka ukusetshenziswa kwamandla kwawo wonke ama-motor kuzinhlelo zokusebenza zezimboni, cishe ama-70% ama-motor asetshenziswa ekulayisheni kwabalandeli nakupompo.Izinzuzo zokonga amandla kanye nokunciphisa ukukhishwa kwempahla enjalo zisobala: izinzuzo ezinkulu zezomnotho kanye nemiphumela eqhubekayo yomphakathi .Ngokusekelwe nje enjongweni engenhla, ukulawulwa kwesivinini sokuguqula imvamisa yemoto ye-AC isetshenziswa kabanzi.Isibonelo, ku-air conditioner ye-inverter, lapho izinga lokushisa elibekwe yi-air conditioner liyancipha, kuyadingeka kuphela ukulawula isivinini se-motor ukunciphisa nokunciphisa amandla okushayela okukhiphayo.
Ngaphezu kokulondoloza amandla nokuba lula ukuthandwa nokusetshenziswa, ama-asynchronous motors alawula isivinini esishintshashintshayo anenzuzo yokuqalisa okuthambile, futhi asikho isidingo sokuhlola ukusebenza kokuqala.Okuwukuphela kwenkinga ebalulekile edinga ukuxazululwa yile: ukuzivumelanisa nezimo kwenjini kumandla wegagasi angewona wesine kufanele kuthuthukiswe.
Umgomo wokusebenza kwesiguquli semvamisa
Isiguquli sefrikhwensi esisisebenzisayo ikakhulukazi samukela imodi ye-AC-DC-AC (ukuguqulwa kwefrikhwensi ye-VVVF noma ukuguqulwa kwefrikhwensi yokulawula i-vector).Okokuqala, imvamisa yamandla e-AC amandla aguqulwa abe amandla e-DC ngokusebenzisa isilungisisi, bese amandla e-DC aguqulwa abe yi-AC enefrikhwensi elawulekayo kanye ne-voltage.amandla okuhlinzeka ngenjini.Isekhethi yesiguquli semvamisa ngokuvamile yakhiwa izingxenye ezine: ukulungiswa, isixhumanisi se-DC esimaphakathi, i-inverter nokulawula.Ingxenye yokulungisa iyisilungisi esingalawuleki esinezigaba ezintathu, ingxenye ye-inverter iyisiguquli sebhuloho esinezigaba ezintathu se-IGBT, futhi okuphumayo kuyi-waveform ye-PWM, futhi isixhumanisi se-DC esimaphakathi siyahluza, isitoreji samandla e-DC namandla asebenzayo abhafa.
Ukulawula imvamisa sekuphenduke isikimu sokulawula isivinini esijwayelekile, esingasetshenziswa kabanzi ekudluliselweni okungenazinyathelo ezimbonini ezahlukahlukene.Ikakhulukazi ngokusetshenziswa okwandayo kokuguqula ama-frequency emkhakheni wokulawulwa kwezimboni, ukusetshenziswa kwama-motor okuguqula imvamisa kuye kwanda kakhulu.Kungashiwo ukuthi ngenxa yokuphakama kwama-motor okuguqula imvamisa ekulawuleni ukuguqulwa kwemvamisa kumamotho ajwayelekile, noma kuphi lapho kusetshenziswa khona ama-frequency converters, thina Akunzima ukubona isibalo semoto yokuguqula imvamisa.
Ukuhlola okuguquguqukayo kwe-frequency motor ngokuvamile kudinga ukuthi kunikwe amandla isiguquli sefrikhwensi.Njengoba imvamisa yokuphuma kwe-frequency converter inokuhlukahluka okuhlukahlukene, futhi igagasi lokuphuma le-PWM liqukethe ama-harmonics acebile, i-transformer yendabuko kanye imitha yamandla ngeke isakwazi ukuhlangabezana nezidingo zokulinganisa zokuhlola.Isihlaziyi samandla okuguqula imvamisa nesidlulisi samandla sokuguqula imvamisa, njll.
Ibhentshi elijwayelekile lokuhlolwa kwezimoto liwuhlobo olusha lwesistimu yokuhlola eyethulwe ngohlelo lokuthuthukisa ukusebenza kahle kwezimoto ekuphenduleni ukonga nokunciphisa ukungcola.Ibhentshi elijwayelekile lokuhlolwa kwezimoto lilinganisa futhi lisebenzise uhlelo oluyinkimbinkimbi, lithuthukisa ukwethembeka kwesistimu, lenze kube lula inqubo yokufaka nokulungisa iphutha, futhi lehlisa izindleko zesistimu.
Izici ezikhethekile zemoto yokuguqulwa kwemvamisa
Idizayini yokukhuphuka kwezinga lokushisa yekilasi B, ukukhiqizwa kwe-F class insulation.Ukusetshenziswa kwezinto zokufakelwa kwe-polymer kanye nenqubo yokukhiqiza i-vacuum ye-vacuum efakwe ngaphakathi kanye nokusetshenziswa kwesakhiwo esikhethekile sokufakelwa kwe-insulation kwenza ukufakwa kwamawindi kagesi ukumelana namandla kagesi namandla emishini kuthuthuke kakhulu, okwanele ekusebenzeni kwemoto ngesivinini esikhulu kanye nokumelana nokuphezulu. -umthelela wamanje we-frequency kanye ne-voltage ye-inverter.Ukulimala kwe-insulation.
Imoto yokuguqula imvamisa inekhwalithi ephezulu yebhalansi, futhi izinga lokudlidliza liyileveli engu-R.Ukunemba kwemishini yezingxenye zemishini kuphezulu, futhi kusetshenziswa ama-bearings akhethekile aphezulu, angagijima ngesivinini esikhulu.
Injini yokuguqula imvamisa isebenzisa umoya ophoqelelwe kanye nesistimu yokukhipha ukushisa, futhi wonke amafeni okugeleza kwe-axial angenisiwe anokuthula okukhulu, impilo ende, nomoya onamandla.Qinisekisa ukuchithwa kokushisa okusebenzayo kwenjini nganoma yisiphi isivinini, futhi uqaphele ukusebenza kwejubane eliphezulu noma okuphansi kwesikhathi eside.
Uma iqhathaniswa nemoto evamile eguquguqukayo, inebanga elibanzi lesivinini kanye nekhwalithi ephezulu yokuklama.Idizayini ekhethekile yakazibuthe icindezela futhi inkambu kazibuthe ene-oda eliphezulu ukuze ihlangabezane nezinkomba zokuklama ze-broadband, ukonga amandla nomsindo ophansi.Inohlu olubanzi lwe-torque engaguquki kanye nezici zokulawula isivinini samandla, ukulawulwa kwejubane okuzinzile, futhi akukho msindo we-torque.
Inokufaniswa kwepharamitha okuhle neziguquli zefrikhwensi ehlukahlukene.Isebenzisana nokulawula i-vector, ikwazi ukubona i-torque engu-zero-speed full-torque, i-torque ephansi-frequency ephezulu kanye nokulawula isivinini sokunemba okuphezulu, ukulawulwa kwendawo kanye nokulawula ukuphendula okuguquguqukayo okusheshayo.
Isikhathi sokuthumela: Dec-05-2023
