Ulawulo lwesantya soguqulo oluqhelekileyo luhlala lubhekisa kwinkqubo enjalo ye-electromechanical: isantya sokuguqulwa kwesantya sokulawulwa kwemoto, isiguquli sesantya, isilawuli esicwangcisiweyo kunye nezinye izixhobo ezikrelekrele, ii-terminal actuators kunye nesoftware yokulawula, njl. inkqubo.Olu hlobo lwenkqubo yokulawula isantya luthatha indawo yolawulo lwesantya soomatshini kunye neskimu solawulo lwesantya se-DC kwimeko engazange ibonwe ngaphambili, ephucula kakhulu inqanaba lokuzisebenzela koomatshini kunye nokusebenza kakuhle kwemveliso, kwaye yenza ukuba izixhobo zibe zincinci kwaye zikrelekrele.
Ukujonga ukusetyenziswa kwamandla kuzo zonke iimotor kwizicelo zemizi-mveliso, malunga neepesenti ezingama-70 zeenjini zisetyenziselwa imithwalo yefeni kunye nepompo.Iinzuzo zokonga amandla kunye nokunciphisa ukukhutshwa kwemithwalo enjalo zicacile: iinzuzo ezinkulu zoqoqosho kunye nemiphumo ezinzileyo yentlalontle .Ngokusekwe nje kule njongo ingasentla, ulawulo lwesantya sokuguqulwa kwemoto ye-AC lusetyenziswa kakhulu.Ngokomzekelo, kwi-air conditioner ye-inverter, xa iqondo lokushisa elibekwe yi-air conditioner liyancipha, kuyimfuneko kuphela ukulawula isantya semoto ukunciphisa kunye nokunciphisa amandla okuqhuba.
Ukongeza ekongeni amandla kunye nokuba lula ukuthandwa kunye nokusebenzisa, iimotor eziguqukayo zokulawula isantya se-asynchronous zinenzuzo yokuqala ethambileyo, kwaye akukho mfuneko yokuhlola ukusebenza kokuqala.Ekuphela kwengxaki ephambili ekufuneka isonjululwe yile: ukuziqhelanisa nemotor kumandla angeyo-sine wave kufuneka kuphuculwe.
Umgaqo-nkqubo wokuguqulela rhoqo
I-frequency converter esiyisebenzisayo ithatha imo ye-AC-DC-AC (i-VVVF frequency conversion okanye i-vector control frequency conversion).Okokuqala, amandla ombane we-AC aguqulwa abe ngamandla e-DC ngokulungiswa, emva koko amandla e-DC aguqulwa abe yi-AC kunye nefrikhwensi elawulekayo kunye nombane.amandla okubonelela ngemoto.Isekethe ye-frequency converter ngokuqhelekileyo yenziwe ngamacandelo amane: ukulungiswa, ikhonkco eliphakathi kwe-DC, i-inverter kunye nokulawula.Inxalenye yokulungiswa yibhulorho yesigaba esithathu engalawulwayo, i-inverter inxalenye yi-IGBT yesigaba sesithathu sokuguqula ibhulorho, kwaye imveliso yi-waveform ye-PWM, kwaye ikhonkco le-DC eliphakathi liyahluza, ukugcinwa kwamandla e-DC kunye nokuphazamisa amandla asebenzayo.
Ulawulo lokuphindaphinda luye lwaba sisikimu solawulo lwesantya esiqhelekileyo, esinokusetyenziswa ngokubanzi kuthungelwano olungenanyathelo kumashishini ahlukeneyo.Ngokukodwa ngokusetyenziswa okukhulayo kokuguqula amaza kwindawo yolawulo lwamashishini, ukusetyenziswa kweenjini zokuguqula amaza kuye kwanda kakhulu.Kunokuthiwa ngenxa yokuphakama kweenjini zokuguqulwa kwamaza kulawulo lokuguqulwa kwamaza kwiimotor eziqhelekileyo, naphi na apho kusetyenziswa khona iziguquli zefrikhwensi, akukho nzima ukubona umzobo wemoto yokuguqula amaza.
Uvavanyo oluguquguqukayo lwemotor ngokubanzi kufuneka luxhaswe sisiguquli samaza.Ekubeni i-frequency ye-output ye-frequency converter inoluhlu olubanzi lweenguqu, kwaye i-wave ye-PWM ephumayo iqulethe i-harmonics ecebileyo, i-transformer yendabuko kunye nemitha yamandla ayinakukwazi ukuhlangabezana neemfuno zokulinganisa zovavanyo.Isihlalutyi samandla okuguqulwa rhoqo kunye nesidlulisi samandla sokuguqula rhoqo, njl.
Ibhentshi yovavanyo lwemoto esemgangathweni luhlobo olutsha lwenkqubo yovavanyo esungulwe kwisicwangciso sokuphucula ukusebenza kakuhle kwamandla eenjini ukuphendula ukonga umbane kunye nokunciphisa ukukhutshwa.Ibhentshi yovavanyo lweemoto esemgangathweni ibeka emgangathweni kunye nezixhobo inkqubo entsonkothileyo, iphucula ukuthembeka kwenkqubo, yenza lula ufakelo kunye nenkqubo yokulungisa iimpazamo, kwaye inciphisa iindleko zenkqubo.
Uguqulo rhoqo iimpawu ezizodwa motor
Uyilo lokunyuka kobushushu kuKlasi B, ukwenziwa kwe-insulation yeklasi ye-F.Ukusetyenziswa kwezixhobo zokugquma i-polymer kunye noxinzelelo lwe-vacuum yokwenziwa kwenkqubo yokwenziwa kwevanishi kunye nokusetyenziswa kwesakhiwo esikhethekileyo sokufakelwa kombane kwenza ukuba umbane wokuvala umbane umelane nombane kunye namandla omatshini aphuculwe kakhulu, awaneleyo ekusebenzeni ngesantya esiphezulu semoto kunye nokuchasana nokuphezulu. -impembelelo yangoku rhoqo kunye ne-voltage ye-inverter.Umonakalo kwi-insulation.
Imoto yokuguqula i-frequency inomgangatho ophezulu wokulinganisa, kwaye inqanaba lokungcangcazela linqanaba le-R.Ukuchaneka komatshini wamacandelo omatshini aphezulu, kwaye iibheringi ezikhethekileyo ezichanekileyo zisetyenzisiweyo, ezinokuhamba ngesantya esiphezulu.
Imoto yoguqulo oluphindaphindiweyo ithatha umoya wokuphefumla ngenkani kunye nenkqubo yokuchitha ubushushu, kwaye bonke abalandeli be-axial flow flow bathe cwaka kakhulu, ubomi obude, kunye nomoya onamandla.Qinisekisa ukutshatyalaliswa kobushushu obusebenzayo bemoto nangasiphi na isantya, kwaye uqaphele ukusebenza kwesantya esiphezulu okanye esisezantsi kwexesha elide.
Xa kuthelekiswa nemoto yesiqhelo eguquguqukayo, inoluhlu olubanzi lwesantya kunye nomgangatho woyilo oluphezulu.Uyilo olukhethekileyo lwemagnethi lucinezela ngakumbi i-harmonic field yemagnetic ephezulu ukuze ihlangabezane nezalathi zoyilo lwebroadband, ukonga amandla kunye nengxolo ephantsi.Inoluhlu olubanzi lwetorque engaguqukiyo kunye neempawu zolawulo lwesantya samandla, ukulawulwa kwesantya esizinzileyo, kwaye akukho torque ripple.
Ineparameter elungileyo ehambelanayo kunye nabaguquli befrikhwensi ezahlukeneyo.Ukusebenzisana nolawulo lwe-vector, inokubona i-zero-speed full-torque, i-torque ephantsi-isantya esiphezulu kunye nolawulo oluchanekileyo oluchanekileyo, ulawulo lwendawo kunye nolawulo lokuphendula oluguqukayo olukhawulezayo.
Ixesha lokuposa: Dec-05-2023
