Ulawulo lwesantya sokuguqulwa kwamaza ludla ngokubhekisa kwinkqubo enjalo ye-electromechanical: i-frequency conversion speed regulation motor induction, i-frequency converter, i-programmable controller kunye nezinye izixhobo ezikrelekrele, ii-terminal actuators kunye nesoftware yolawulo, njl.njl., zenza inkqubo yokulawula isantya se-AC evulekileyo okanye evaliweyo. Olu hlobo lwenkqubo yokulawula isantya luthatha indawo yesicwangciso solawulo lwesantya soomatshini kunye ne-DC speed control kwimeko engakaze ibonwe ngaphambili, nto leyo ephucula kakhulu umgangatho wokwenziwa ngokuzenzekelayo koomatshini kunye nokusebenza kakuhle kwemveliso, kwaye yenza izixhobo zibe zincinci kwaye zibe krelekrele ngakumbi.
Xa sijonga ukusetyenziswa kwamandla kwazo zonke iimoto kwizicelo zoshishino, malunga ne-70% yeemoto zisetyenziswa kwimithwalo yefeni kunye nepompo. Iingenelo zokonga amandla kunye nokunciphisa ukukhutshwa komoya kwimithwalo enjalo zicacile: iingenelo ezinkulu zoqoqosho kunye nemiphumo ezinzileyo yoluntu. Ngokusekelwe nje kwinjongo engentla, ukulawulwa kwesantya sokuguqulwa kwamaza eemoto ze-AC kusetyenziswa kakhulu. Umzekelo, kwi-inverter air conditioner, xa ubushushu obubekwe yi-air conditioner buncitshisiwe, kuyimfuneko kuphela ukulawula isantya semoto ukuze wehlise kwaye unciphise amandla okuqhuba emveliso.
Ukongeza ekongeni amandla kwaye kulula ukuwenza athandwe kwaye asetyenziswe, iimoto ezilawula isantya eziguquguqukayo zinenzuzo yokuqalisa ngokuthambileyo, kwaye akukho mfuneko yokujonga ukusebenza kokuqala. Ingxaki ephambili kuphela ekufuneka isonjululwe yile: ukulungelelaniswa kwemoto namandla e-non-sine wave kufuneka kuphuculwe.
Umgaqo wokusebenza wokuguqula i-frequency
Isiguquli samaza esisisebenzisayo ikakhulu samkela imo ye-AC-DC-AC (ukuguqulwa kwamaza e-VVVF okanye ukuguqulwa kwamaza okulawula i-vector). Okokuqala, amandla e-AC atshintsha abe ngamandla e-DC nge-rectifier, aze emva koko amandla e-DC aguqulwe abe yi-AC enegunya lokulawula i-frequency kunye ne-voltage ukuze inike i-motor. Isekethe yesiguquli samaza ngokubanzi yenziwe ngamacandelo amane: ukulungiswa, ikhonkco eliphakathi le-DC, i-inverter kunye nolawulo. Inxalenye yokulungiswa yi-rectifier engalawulwayo yebhulorho enezigaba ezintathu, icandelo le-inverter yi-inverter yebhulorho enezigaba ezintathu ze-IGBT, kwaye isiphumo yi-PWM waveform, kwaye ikhonkco eliphakathi le-DC liyi-filter, i-DC energy storage kunye ne-buffering reactive power.
Ulawulo lweefrikhwensi lube yindlela ephambili yokulawula isantya, enokusetyenziswa kakhulu ekudluliseni ngaphandle kwenyathelo kumashishini ahlukeneyo. Ingakumbi ngokusetyenziswa okubanzi kweefrikhwensi kwicandelo lolawulo lwemizi-mveliso, ukusetyenziswa kweemoto zokuguqula iifrikhwensi kuye kwanda kakhulu. Kunokuthiwa ngenxa yokuba iimoto zokuguqula iifrikhwensi zibalaseleyo kulawulo lokuguqula iifrikhwensi kuneemoto eziqhelekileyo, naphi na apho kusetyenziswa khona iifrikhwensi, akukho nzima ukubona umfanekiso wemoto yokuguqula iifrikhwensi.
Uvavanyo lwemoto ye-variable frequency ludla ngokufuna ukunikwa amandla yi-frequency converter. Ekubeni i-output frequency ye-frequency converter inoluhlu olubanzi lotshintsho, kwaye i-output PWM wave ine-harmonics etyebileyo, i-transformer yendabuko kunye ne-power meter ayisakwazi ukuhlangabezana neemfuno zokulinganisa zovavanyo. I-frequency conversion power analyzer kunye ne-frequency conversion power transmitter, njl.njl.
Ibhentshi yovavanyo lweemoto esemgangathweni luhlobo olutsha lwenkqubo yovavanyo oluqaliswe kwisicwangciso sokuphucula ukusebenza kakuhle kwamandla emoto ukuphendula ukonga amandla kunye nokunciphisa ukukhutshwa komoya. Ibhentshi yovavanyo lweemoto esemgangathweni ilinganisa kwaye isebenzise inkqubo enzima, iphucula ukuthembeka kwenkqubo, yenza lula inkqubo yokufakela kunye nokulungisa iimpazamo, kwaye inciphisa iindleko zenkqubo.
Iimpawu ezikhethekileyo zemoto yokuguqulwa rhoqo
Uyilo lokunyuka kobushushu beKlasi B, ukwenziwa kwe-insulation yeklasi F. Ukusetyenziswa kwezinto zokukhusela i-polymer kunye nenkqubo yokuvelisa i-varnish efakwe uxinzelelo lwe-vacuum kunye nokusetyenziswa kwesakhiwo esikhethekileyo sokukhusela kwenza i-insulation yombane imelane ne-voltage kunye namandla oomatshini aphuculwe kakhulu, nto leyo eyaneleyo ekusebenzeni ngesantya esiphezulu kwemoto kunye nokuxhathisa impembelelo yamandla ajikelezayo aphezulu kunye ne-voltage ye-inverter. Umonakalo kwi-insulation.
Injini yokuguqula amaza inomgangatho ophezulu wokulinganisela, kwaye inqanaba lokungcangcazela linqanaba le-R. Ukuchaneka komatshini kwiindawo zoomatshini kuphezulu, kwaye kusetyenziswa iibheringi ezikhethekileyo ezichanekileyo, ezinokusebenza ngesantya esiphezulu.
Imoto yokuguqula ubushushu isebenzisa inkqubo yokungenisa umoya ngokunyanzelekileyo kunye nokusasaza ubushushu, kwaye zonke iifeni ze-axial flow ezingenisiweyo zizolile kakhulu, zihlala ixesha elide, kwaye zinomoya onamandla. Qinisekisa ukusasaza ubushushu okusebenzayo kwemoto nangaliphi na isantya, kwaye iyasebenza ixesha elide ngesantya esiphezulu okanye esisezantsi.
Xa ithelekiswa nemoto yesiqhelo eguquguqukayo, inoluhlu olubanzi lwesantya kunye nomgangatho ophezulu woyilo. Uyilo olukhethekileyo lwe-magnetic field lucinezela ngakumbi i-high-order harmonic magnetic field ukuze ihlangabezane nezikhombisi zoyilo lwe-broadband, ukonga amandla kunye nengxolo ephantsi. Ineempawu ezininzi ze-torque engaguqukiyo kunye nolawulo lwesantya samandla, ulawulo lwesantya oluzinzileyo, kwaye akukho torque ripple.
Inokufanisa iiparameter kakuhle nee-frequency converters ezahlukeneyo. Isebenzisana nolawulo lwevektha, inokwenza i-torque epheleleyo ibe zero-speed, i-torque ephezulu ephindaphindayo ephantsi kunye nolawulo lwesantya oluchanekileyo, ulawulo lwendawo kunye nolawulo lwempendulo ekhawulezayo.
Ixesha lokuthumela: Disemba-05-2023