Impendulo kumhlinzeki weyunithi: Indawo yokupaka engenzi lutho yesiguquli sefrikhwensi ingenye yezindlela zokupaka zesiguquli sefrikhwensi, futhi enye indlela ibizwa nge-braking parking.
Ukupaka kwamahhala kwe-frequency converter
I-inertial parking, eyaziwa nangokuthi indawo yokupaka yamahhala. Ngemva kokumisa ngokushesha ukukhishwa kwesiguquli semvamisa ngokuvala ukunikezwa kwamandla, ukunqamula isignali yokulawula ukusebenza, njll., i-motor iyaqhubeka nokuslayida nge-inertia ekhiqizwa ngesikhathi sokusebenza kwayo kuze kube yilapho iyeka ukujikeleza. Le ndlela ayikhiqizi i-voltage yempendulo ngaphakathi kwesiguquli sefrikhwensi.
Isicabha sethu sifakwe indawo yokupaka yamahhala, sizungeza siye phambili nangemuva, bese sigijima siye ku-50HZ. Ngemva kokuma imizuzwana emithathu, ukubuyela emuva ku-50HZ kuzoholela ekukhawulweni kwamanje futhi kungabikho ukubika okweqile. Ingabe lokhu kwamanje kungakhawulelwa? Ingakanani okwamanje? Ngibike i-overcurrent ngesikhathi sokuhlolwa. Incazelo: Isiguquli semvamisa sifakwe injini, futhi injini iyathululwa. Ukusebenza okuvamile okunamanje okungaphezu kwama-30.
Ngemva kokuthola umyalo wokuvala shaqa, isiguquli semvamisa siyayeka ngokushesha ukukhipha futhi umthwalo ume ngokukhululekile ngokuya nge-inertia yomshini. Isiguquli sefrikhwensi siyavala ngokumisa okukhiphayo. Kuleli qophelo, ukunikezwa kwamandla enjini kuyanqanyulwa, futhi uhlelo lokushayela lusesimweni samahhala sokubhuleka. Njengoba ubude besikhathi sokuvala shaqa kunqunywa inertia yesistimu yokushayela, kwaziwa nangokuthi ukuvala shaqa kwe-inertia.
Isiguquli sefrikhwensi simisa okukhiphayo bese simisa imoto. Ngalesi sikhathi, ukunikezwa kwamandla ku-motor kunqanyuliwe, futhi uhlelo lokushayela lusesimweni sokubhuleka samahhala Ngenxa yokuthi ubude besikhathi sokupaka bunqunywa inertia yesistimu yokudonsa, kubizwa ngokuthi ukupaka okune-inertial Ngesikhathi sokupaka kwe-inertia, ukunakwa kufanele kukhokhwe ukuze ungaqali injini ngaphambi kokuba ime ngempela. Uma ufuna ukuqalisa, bhuleka kuqala bese ulinda ukuthi injini ime ngaphambi kokuqala Lokhu kungenxa yokuthi umehluko phakathi kwejubane lemoto (imvamisa) ngesikhathi sokuqala kanye nemvamisa yokuphuma kwe-frequency converter inkulu kakhulu, engabangela ubuningi bamanje ku-converter frequency futhi kulimaze i-transistor yamandla yesiguquli se-frequency.
I-inverter braking kanye nokupaka
Indawo yokupaka amabhuleki, eyaziwa nangokuthi indawo yokupaka eyemithambeka. I-Braking ne-parking ingahlukaniswa nge-DC braking, i-power braking, i-feedback braking, i-hybrid braking, kanye ne-mechanical braking.
Ukukhethwa kwendlela yokupaka ye-converter frequency kuncike esikhathini esidingekayo sokupaka esizeni. Imvamisa, lapho isikhathi sokupaka esidingekayo singaphansi kwesikhathi sokupaka samahhala, indawo yokupaka amabhuleki neyokwehlisa izinga lokusheshisa kufanele kukhethwe.
Ukubhuleka kwamanje okuqondile (okungukuthi ukuhlinzeka ngenani elithile lamandla aqondile endaweni yamandla); I-Power braking (usebenzisa ama-resistors ukuze uchithe amandla); I-Hybrid braking (DC braking+power braking); Ukubhuleka impendulo (ukujova i-current ekhiqizwayo kugridi yamandla); Ibhuleki mechanical braking.
Ukupaka kuhlukaniswe indawo yokupaka yamagagasi ethambekele kanye nendawo yokupaka yamahhala (indawo yokupaka esheshayo ibuye ibe yindawo yokupaka yamagagasi ethambekele, kepha umqansa uyakhuphuka).
I-Braking ihlanganisa nokubhuleka ngomshini (okufana nokubamba amabhuleki), ukusebenzisa amandla ebhuleki (ama-braking resistors, i-reverse braking, i-DC braking, njll.), i-feedback braking, njll. Isidingo sokubhuleka sihlobene nesimo sokusebenza kwemoto. Lapho isikhathi sokupaka esidingekayo singaphansi kwesikhathi sokupaka samahhala phakathi ne-oblique wave parking, i-braking iyadingeka; Kwesinye isikhathi ukubhuleka kuyadingeka lapho injini isebenza ngokujwayelekile, njengalapho ihhuku yehliswa.
Imodi yokusebenza ye-resistance energy ukusetshenziswa braking
Indlela esetshenziselwa ukumelana namabhuleki okusetshenziswa kwamandla inezingxenye ezimbili: iyunithi yokubhuleka kanye ne-resistor yokubhuleka, edla amandla kagesi kuma-resistors anamandla amakhulu ngokusebenzisa ama-braking resistors akhelwe ngaphakathi noma angaphandle ukuze kuzuzwe ukusebenza kwama-quadrant amane enjini. Nakuba le ndlela ilula, inezinkinga ezinkulu ezilandelayo.
(1) I-braking elula yokusebenzisa amandla ngezinye izikhathi iyehluleka ukucindezela ngesikhathi amandla kagesi epompo akhiqizwa ukubhuleka ngokushesha, anciphise ukuthuthukiswa kokusebenza kwamabhuleki (i-torque enkulu yokubhuleka, isivinini esibanzi, ukusebenza okuhle okuguquguqukayo)
(2) Ukumosha amandla kunciphisa ukusebenza kahle kohlelo
(3) I-resistor ishisa kakhulu, ithinta ukusebenza okuvamile kwezinye izingxenye zesistimu
Indlela yokubhuleka esekelayo: Imoto kagesi ishayela imithwalo emikhulu ye-inertia (njengama-centrifuges, ama-gantry planer, izimoto zomhubhe, nezimoto ezinkulu nezincane) futhi idinga ukwehla ngokushesha noma ukuma; Amamotho kagesi ashayela imithwalo yamandla engaba namandla (njengamakheshi, amakhreni, ama-hoist asemayini, njll.); Amamotho kagesi avame ukuba sesimweni sokuhudulwa (njengemishini eyi-centrifuge asizayo, ama-roller motors omhlahlandlela womshini wephepha, imishini yokwelula yemishini ye-fiber yamakhemikhali, njll.). Izici ezivamile zalezi zinhlobo zemithwalo zidinga ama-motor kagesi ukuthi angasebenzi kuphela esimweni sikagesi (ama-quadrants okuqala nesesithathu), kodwa futhi esimweni sokukhiqiza amandla kanye ne-braking (i-quadrants yesibili neyesine)
Ohlelweni lokushayela olwakhiwe igridi yamandla, isiguquli semvamisa, isithuthuthu, nomthwalo, amandla angadluliswa ngendlela ekabili. Lapho i-motor ikumodi yokusebenza yemoto kagesi, amandla kagesi adluliselwa kusuka kugridi kuya kumotho ngokusebenzisa isiguquli semvamisa, aguqulwa abe amandla omshini ukushayela umthwalo, futhi umthwalo ngakho-ke unamandla e-kinetic noma angaba namandla; Lapho umthwalo ukhulula la mandla ukuze uguqule isimo sokunyakaza, injini ishayelwa umthwalo bese ingena kumodi yokusebenza yejeneretha, iguqule amandla emishini abe amandla kagesi futhi iwabuyisele kusiguquli samafrikhwensi esisekupheleni. Lawa mandla empendulo abizwa ngokuthi amandla okubhuleka avuselelayo, angabuyiselwa kugridi ngesiguquli sefrikhwensi noma adliwe kuma-resistors okubhuleka ebhasini le-DC lesiguquli se-frequency (ibhuleki yokusetshenziswa kwamandla).
Izikhathi lapho kukhiqizwa khona amandla okubhuleka
1. Inqubo yokunciphisa ngokushesha yomthwalo omkhulu we-inertia
2. Inqubo yokwehlisa izinto ezisindayo ekuphakamiseni imishini
3. Inqubo yokwehlisa inhloko yembongolo yeyunithi yokumpompa ugodo