Undoqo wolawulo lombane wesithuthi kulawulo lwemoto. Kweli phepha, umgaqo we-star-delta oqala ukusetyenziswa ngokuqhelekileyo kumashishini usetyenziselwa ukwandisa ulawulo lwezithuthi zombane, ukwenzela ukuba inkqubo ye-48V yombane yombane ingaba yindlela ephambili ye-10-72KW yamandla okuqhuba imoto.Ukusebenza kwesithuthi siphela kuqinisekisiwe, kwaye kwangaxeshanye, iindleko zokuqhuba umbane zeemoto ezincinci kunye neemoto ezincinci ziyancipha kakhulu,
Kuphononongo lwakutsha nje, ndiye ndabona ukuba ulawulo lwezithuthi zombane ngokwenene lulawulo lwemoto.Ngenxa yokuba ulwazi olubandakanyekayo kweli nqaku lubanzi kakhulu kwaye luneenkcukacha, ukuba umgaqo kunye nenkqubo yokuphucula inkqubo yokulawula imoto ichazwe ngokupheleleyo ngokweenkcukacha, ngokweencwadi zokufunda ngoku ezifundwa ngumbhali, amanqaku olwazi anele ukuvelisa i-monograph. enamaphepha angaphezu kwe-100 nangaphezulu kwamagama angama-100,000 .Ukuze kuvumeleke abafundi abakwimithombo yeendaba ukuba baqonde kwaye basebenzise indlela yokuphucula ngaphakathi kuluhlu lwamawaka wamagama.Eli nqaku liza kusebenzisa imizekelo ethile ukuchaza inkqubo yokuphucula inkqubo yemoto yombane.
Imizekelo echazwe apha isekwe kwi-Baojun E100, BAIC EC3, kunye ne-BYD E2.Kuphela ezi parameters zilandelayo zemifuziselo zimbini kufuneka zinxulumane, kwaye lulawulo lwemoto kuphela oluphuculweyo ukuze luyiphucule ibe yi-48V/144V DC yenkqubo yebhetri ephindwe kabini, i-AC 33V/99V i-dual-voltage motor kunye neseti yabaqhubi beemoto. .Phakathi kwabo, inkqubo ye-elektroniki yamandla yomqhubi wemoto iyisitshixo kwiskimu sokuphucula, kwaye umbhali ufunda ngononophelo nangokunzulu.
Ngamanye amazwi, iimotor ze-Baojun E100, BAIC EC3, kunye ne-BYD E2 zifuna kuphela ukuphuculwa kwi-29-70KW yesixokelelwano solawulo lweemoto.Aba ngabameli bemoto encinci ye-A00, imoto encinci ye-A0, kunye ne-A compact pure electric car.Eli nqaku liza kusebenzisa indlela yokulawula i-asynchronous motor yesigaba sesithathu sokuyisebenzisa ekulawuleni iimoto zemoto zombane ngokusebenzisa i-star-delta, i-V / F + DTC yesigaba sesithathu se-asynchronous induction motor control.
Ngenxa yokulinganiselwa kwendawo, eli nqaku aliyi kuchaza imigaqo yonxantathu weenkwenkwezi kunye nokunye.Masiqale ngamandla aqhelekileyo eemoto kulawulo lweemoto zamashishini. I-380V esetyenziswa ngokuqhelekileyo i-asynchronous motor yesigaba sesithathu yi-0.18 ~ 315KW, amandla amancinci yi-Y uxhumano, amandla aphakathi △ ukudibanisa, kwaye amandla aphezulu yi-380 / 660V motor.Ngokubanzi, iimotor ezingama-660V zezona njini ziphambili ngaphezulu kwe-300KW. Asikuko ukuba iinjini ezingaphezu kwe-300KW azikwazi ukusebenzisa i-380V, kodwa ukuba uqoqosho lwazo alulunganga.Yiyo yangoku ekhawulela uqoqosho lweemoto kunye nesiphaluka solawulo.Ngokuqhelekileyo i-square millimeter ingadlula i-6A yangoku. Nje ukuba inqanaba lesithathu le-asynchronous induction motor liyilwe, intambo yayo yokujija imoto imisiwe.Oko kukuthi, ukudlula kwangoku kumiselwe.Ngokwembono yeenjini zoshishino, i-500A lelona xabiso likhulu kuqoqosho lwayo.
Buyela kwimoto yemoto yombane, i-PWM yesigaba sesithathu sombane we-48V inkqubo yebhetri yi-33V.Ukuba uqoqosho lwangoku lwemoto ye-industrial yi-500A, ixabiso eliphezulu loqoqosho lwemoto yombane ye-48V malunga ne-27KW ye-motor induction induction phase.Ngexesha elifanayo, ngokuqwalasela iimpawu eziguquguqukayo zesithuthi, ixesha lokufikelela kwinqanaba eliphezulu langoku lifutshane kakhulu, ngokuqhelekileyo lingabi ngaphezu kwemizuzu embalwa, oko kukuthi, i-27KW inokwenziwa kwimeko yokulayisha ngaphezulu.Ngokuqhelekileyo imeko yokugqithiswa yi-2 ukuya kwii-3 amaxesha kwiimeko eziqhelekileyo.Oko kukuthi, imeko eqhelekileyo yokusebenza yi-9 ~ 13.5KW.
Ukuba sijonga kuphela inqanaba lombane kunye nokulinganisa umthamo wangoku.Inkqubo ye-48V inokuba ngaphakathi kwe-30KW kuphela njengoko ukuqhuba kakuhle kuyeyona meko isebenzayo.
Nangona kunjalo, zininzi iindlela zokulawula iimotor ezinenqanaba lesithathu le-asynchronous. Izithuthi zombane zineendlela ezininzi zokulawula isantya (malunga ne-0-100%) kunye noluhlu lokulawula i-torque (phantse i-0-100%).Ngaphantsi kweemeko zokusebenza ezinzima, izithuthi zombane okwangoku zisebenzisa i-VF okanye ulawulo lwe-DTC.Ukuba ulawulo lwenkanyezi-delta luyaziswa, lunokubangela isiphumo esingalindelekanga.
Kulawulo lwamashishini, i-voltage yokulawula i-star-delta ngamaxesha angama-1.732, into eyenzekayo kunokuba umgaqo.Inkqubo ye-48V ayikunyusi ukumodareyitha rhoqo kwe-PWM ukwenza i-AC 33V, kunye ne-motor eyilwe ngokwenqanaba le-motor voltage ye-industrial yi-57V.Kodwa sihlengahlengisa inqanaba lolawulo lwenkanyezi-delta ukuya kumaxesha ama-3, eyingcambu ye-9.Emva koko iya kuba yi-99V.
Oko kukuthi, ukuba i-motor yenzelwe i-99V AC yesigaba sesithathu se-asynchronous motor kunye noqhagamshelo lwe-delta kunye noqhagamshelo lwe-33V Y, isantya semoto sinokuhlengahlengiswa ukusuka kwi-0 ukuya kwi-100% ngaphakathi koluhlu lwamandla angama-20 ukuya kwi-72KW phantsi koqoqosho. iimeko. Ngokuqhelekileyo isantya esiphezulu se-motor yi-12000RPM), umgaqo we-torque ngu-0-100%, kunye ne-frequency modulation yi-0-400Hz.
Ukuba isicwangciso esinjalo sinokufezekiswa, ke iimoto zodidi lwe-A kunye neemoto ezincinci zinokufumana ukusebenza kakuhle ngemoto enye.Siyazi ukuba iindleko ze-48V motor system (ngaphakathi kwexabiso eliphezulu le-30KW) malunga ne-5,000 ye-yuan. Iindleko zeskimu sokulungiswa kweli phepha ayaziwa, kodwa ayifaki izinto eziphathekayo, kodwa iguqula kuphela indlela yokulawula kwaye ingenise amanqanaba amabini ombane.Ukunyuka kweendleko zayo nako kuyalawuleka.
Ngokuqinisekileyo, kuya kubakho iingxaki ezininzi ezintsha kwisikimu solawulo esinjalo. Ezona ngxaki zinkulu kuyilo lwenjini, uyilo lomqhubi, kunye neemfuno eziphezulu kakhulu zokutshaja kunye nokukhupha iimpawu zepakethi yebhetri enevoltage ephezulu.Ezi ngxaki ziyalawuleka kwaye kukho izisombululo ezikhoyo. Umzekelo, uyilo lweemoto lunokusombululwa ngokulungelelanisa umlinganiselo wamanqanaba ombane aphezulu naphantsi.Siza kuyixubusha kunye kwinqaku elilandelayo.
Ixesha lokuposa: Mar-02-2023