Drive frequency: inkcazelo kunye nohlaziyo

ulawulo drive frequency ivumela usebenzisa converter ekhethekileyo ukutshintsha eguquguqukayo iindidi ukusebenza motor: Baqinisekise qala, misa, ukukhawulezisa, elekhtrons, ukutshintsha umhlaba ubucotha ukujikele-.

Ukutshintsha amaza omoya ombane unikezelo kukhokelela inguqu uqina emboxo lo mhlaba otsalayo le stator. Xa amaza liyancipha, isantya injini liyancipha, kwakunye nokwanda isiliphu.

Umgaqo esebenza ngayo i-njalo Converter drive

Le ethile engundoqo ukuntsonkotha olungenangqamaniso iinjini ulawulo isantya iindlela eziqhelekileyo: ukutshintsha ombane sonikezelo kunye nokwaziswa engathi ezongezelelweyo resistances wesiphaluka. Nobunzima kakhulu ke amaza drive ye enjinini. Kude kube kamva nje, ukuba converters pricey, kodwa ukubonakala IGBT-transistors kunye neenkqubo zolawulo isilawuli eye wavumela abenzi amazwe ukudala iindleko elinako ukuzihlawulela iSebe i device. I uphezulu unokufumaneka namhlanje converters rhoqo static.

₀ utshintsho The uqina emboxo le ω stator Imagnethi ngokomlinganiselo frequency ƒ ₁ ngokomgaqo wokubala:

ω ₀ = 2π × ƒ ₁ / p,

apho p - inani bengababini ipali.

Le ndlela ibonelela zokulawula isantya made. Kule isantya isiliphu ngeemoto ukhulise.

Ukuze ufumane ukusebenza eliphezulu amandla injini - ukusebenza, amandla ombane kunye Isakhono omninzi ixesha, kunye nezihlandlo yokutshintsha ukuzimisela ombane yokuxhomekeka:

• rhoqo torque umthwalo - U ₁ / ƒ ₁ = nengngqi;
• Fan umthwalo uphawu torque - U ₁ / ƒ ₁ ² = nengngqi;
• umthwalo torque na bomzimba ngokomlinganiselo Isantya - U ₁ / √ ƒ ₁ = nengngqi.

Le misebenzi ziyaphunyezwa nge transducer xa utshintsha rhoqo kunye ombane ukuya stator motor. Ndlela onge amandla ngokulawula ngokusebenzisa inkqubo iparameters eziyimfuneko: pump koxinzelelo, umthamo fan, izinga feed matshini, njl Iiparamitha ziyahluka kakuhle ..

Iindlela ukuba ulawulo frequency yoqheliso yolunye Motors

I zilawulwa rhoqo drives ngokusekelwe iinjini unomatse-cage olungenangqamaniso iindlela ezimbini ukusebenzisa ulawulo - scalar kunye kumda wesangqa. Kwimeko yokuqala, ngaxeshanye utshintshe awo kunye amaza ombane yonikezelo.

Oku kuyimfuneko ukuze kugcinwe intsebenzo injini, inkoliso zonke - ezinomlinganiselo rhoqo torque layo eliphezulu ukuya torque resistive. Ngenxa yoko kuhlala ukusebenza efanayo kunye namandla factor kulo lonke ukujikeleza kuluhlu.

ulawulo kumda wesangqa utshintsho ngaxeshanye kwi awo kunye sigaba zangoku kwi stator.

Frequency Uhlobo yolunye motor drive isebenza kwi imithwalo ephantsi, ngexesha ukukhula amakhulu amaxabiso yokwakha adibanayo ukuze fail.

Izinto eziluncedo ze drive frequency

uhlengahlengiso Ubuninzi has lonke uluhlu amathuba xa kuthelekiswa nezinye iindlela.

1. Ukufunyanwa okuzenzekelayo lweenkqubo injini mveliso.
2. isiqalo Smooth yokunqanda iimpazamo ezithile ezithe zenzeka ngexesha injini lunikezelo. Ukwandisa njalo drive nokuthembeka kwezixhobo ngokunciphisa ingxinano.
3. Kwandisa ukusebenza kwezoqoqosho kunye nokusebenza okuqhuba liphela.
4. Ukudala Isantya motor rhoqo yodwa ingaxhomekeki uhlobo lomthwalo, nto leyo ibaluleke ngexesha transients. Ukusebenzisa ingxelo yenza kube lula ukugcina isantya injini njalo impembelelo ezahlukeneyo perturbing, ingakumbi phantsi imithwalo alternating.
5. Converters kube lula bafakwe kwiinkqubo ezikhoyo zobugcisa ngaphandle utshintsho ezinkulu kwaye uyeke neenkqubo. Uluhlu amandla amakhulu, kodwa kunye nokunyuka kwamaxabiso babo zanda kakhulu.
6. Ithuba ukwala variators, reducers, ingakwazi nokuginya kunye nezinye izixhobo lolawulo okanye ukuze bandise zezicelo zabo. Oku kukhokelela yokonga umbane kakhulu.
7. Ukususwa kwiziphumo eziyingozi transients kwi kwezixhobo inkqubo, ezifana uyothuka hydraulic okanye ukwanda uxinzelelo fluid olusezimbizeni ngoxa kuncitshiswa ukusetyenziswa kwayo ebusuku.

ukushiyeka

Njengabo bonke inverters chastotniki yimithombo ukuphazamiseka. Kufuneka izihluzi ifakiwe.

Ixabiso Brand iphezulu. It kwandisa ngokubalulekileyo ukwanda ngamandla kwezixhobo.

uhlengahlengiso Ubuninzi xa ezithutha ulwelo

Kumaziko apho ukutshintshwa kwenziwa ngamanzi kunye nezinye izinto, ukulungiswa flow zenziwe becala nge iivelufa kunye lwezivalo. Okwangoku, wathembisa ulwalathiso kukusebenzisa pump drive frequency okanye fan ukuqhutywa kwezi ngamaphiko.

Ukusetyenziswa inverter njengendlela eyenye umcephe unika isiphumo yogcino lwamandla kwi 75%. Valve, iba nokuphuma kolwelo, lingasebenzi umsebenzi luncedo. Oku kwandisa kwilahleko yamandla into yokuhamba yayo.

Uqhubo Ukuxhaphaka yenza kube lula ukugcina njalo kwi umxhasi xa ukutshintsha ulwelo isantya sokuqukuqela. Kuvela uphawu woluvo uxinzelelo actuator eguqula injini isantya ojikeleza ngaso kwaye ilawula ngaloo amandla ayo ngexesha ilondoloza kwangaphambili isantya sokuqukuqela.

iiyunithi impompo zilawulwa ngokutshintsha intsebenzo yabo. ukusetyenziswa kwamandla ukusuka kwimpompo na ukuxhomekeka kathathu nokusebenza okanye isantya yevili. Ukuba turnovers ukunciphisa ngumba ka-2, ukusebenza impompo iya kunyothulwa amaxesha-8. Ubukho lweshedyuli yemihla ngemihla yokusebenzisa amanzi ukumisela konga umbane ngethuba leli xesha, ukuba ulawulo frequency drive imveliso. Ngenxa kunokwenzeka ukuba imishini kwisikhululo sokumpompa ngoko nokwandisa uxinzelelo lwamanzi networks.

umoya umsebenzi kunye neenkqubo umoya

Le ukungena komoya ngokusemthethweni anoomatshini bokungenisa akusoloko kuyimfuneko. iimeko zokusebenza kungafuna bebingelela ukusebenza. Ngokwemveli, oku kusebenza nobunzima xa isantya yevili lihlala rhoqo. Kuyinto elula ukutshintsha isantya sokuqukuqela emoyeni ngenxa kulawulwa frequency drive xa ukutshintsha namaxesha onyaka kunye nemozulu, ubushushu, ukufuma, umphunga kunye neegesi olonakalisayo.

Ukonga amandla anoomatshini bokungenisa kunye isixhobo iyazalisekiswa ongekho ngaphantsi kunolo izikhululo zokumpompa, ekubeni ukusetyenziswa kwamandla ojikelezayo ngumsebenzi cc ngesantya.

izixhobo inverter

Modern circuit drive frequency yomveleli kwi converter kabini. Siqulathe rectifier kunye inverter sazi kunye nenkqubo yolawulo.

Emva nokulungisa uphawu ombane mpuluswa na ecociweyo kwaye anikwe i inverter nezixhobo zokucima nokuvula ezintandathu semiconductor, apho ngamnye kubo liqhagamshelene engathi stator le motor induction. Unit oguqula uphawu kulungiswa kwinqanaba elifunekayo zobungakanani kunye namandla awo. izigaba IGBT-Transistors Power output abe aqhelelkileyo ziguquka kwaye inika umqondiso ocacileyo ebuxande ngaphandle Bill. Ngenxa iipropati ucoco ye motor jiko ifomu yangoku igophe kwi yabo sinusoidal.

Iindlela awo uphawu adjustment

Ubukhulu bale ombane yemveliso kulawulwa ngeendlela ezimbini:

1. Awo - ukutshintsha ixabiso ombane le.
2. Imifino kwezwi ububanzi - indlela ukuguqula umqondiso idaleka utshintsho apho ubude bayo, kwaye rhoqo kuhlala ingatshintshanga. amandla Kukho ixhomekeke ububanzi ukubetha.

Indlela yesibini isetyenziswa kakhulu ngokunxulumene nophuhliso zobugcisa isilawuli. inverters Modern zenziwa ngokusekelwe itshixiwe GTO-thyristors okanye IGBT-transistors.

Amathuba kunye nokusetyenziswa converters

drive Ubuninzi inemisebenzi.

1. ulawulo Ubuninzi kwesigaba ezintathu unikezelo ombane ukusuka kwiqanda ukuya 400 Hz.
2. Ukukhawulezisa okanye deceleration na injini yombane lemizuzwana 0,01. 50 imiz. ngomthetho elinikiweyo kumaxesha ngamaxesha (idla - linear). Xa unikezelo kunokwenzeka ukunciphisa nje kuphela, kodwa baya ku-150% yokuqala torque kunye neguquguqukayo.
3. Reverse motor ne kwangaphambili kokuba unikezelo kunye deceleration iindlela ukuya kwisantya ezinqwenelekayo kwelinye icala.
4. Le converters kusetyenziswa ukhuseleko adjustable electronic nxamnye wesekethe elifutshane, ukucima kombane, umhlaba ukuvuza kwaye waphula imigca supply motor.
5. Converters phezu zokubonisa digital ezotywe data malunga parameters zabo: kwamaza, ombane, amandla, isantya, ukuhamba, kunye nabanye.
6. Le converters luhlengahlengiswe iimpawu zangoku-frequency kuxhomekeke efunekayo umthwalo kukuba kwi-injini. Iindlela zokulawula umsebenzi osekelwe phezu kwazo zibonelelwa nabaqondisi ekwinqwelo.
7. Ngokuba amaza ephantsi kubalulekile ukuba usebenzise ulawulo kumda wesangqa, ukuvumela ukuba isebenze ne motor torque ngokupheleleyo ukugcina ngesantya esingaguqukiyo xa imithwalo utshintsha ulawulo shaft torque. gear ngokulungisa Ubuninzi isebenza kakuhle kunye nokuqaliswa eyiyo motor abagcine data, kwaye kulandela ukuphumelela lovavanyo yayo. iinkampani imithi Itraki, Sanyu, kunye nabanye.

Isicelo le converters zilandelayo:

• iimpompo ngamanzi ashushu nabandayo kunye nobushushu;
• udaka, isanti kunye Intlama iimpompo concentrators;
• yokudlulisela iinkqubo: zokuthutha, zokuthutha mqengqeleki, kunye nezinye iindlela ;.
• stirrer, lokusila, extruders screwdriver, izikhongozeli Abatyisi;
• icentrifuge;
• bekwilift;
• izixhobo metallurgical;
• Isixhobo sokugrumba;
• kwiimatshini zombane;
• excavator nendwe izixhobo, ezisebenza ezandleni.

Nabavelisi inverters kwamaza, ncomo

umenzi Domestic sele iqalile ukwenza iimveliso ezifanelekileyo kubasebenzisi kumgangatho kunye nexabiso. Unalungelo lini na ukukwazi ukufumana ngokukhawuleza umatshini ekunene, kunye neengcebiso eneenkcukacha ngokumisa.

Inkampani "inkqubo Effective" luvelisa iimveliso serial kunye nezixhobo iqela onamava. Iimveliso ezisetyenziswayo ukuze ukusetyenziswa ekhaya, amashishini amancinane kunye namashishini. Nomakhi "Vesper" uvelisa uthotho ezisixhenxe converters, eziquka multi-functional, efanelekileyo kuninzi oomatshini mveliso.

Leader kwi ivelisa isimo chastotnikov Danish evela Danfoss. iimveliso zayo zisetyenziswa anoomatshini bokungenisa, kondtsionirovaniya, amanzi kunye ukufudumeza. Le nkampani Finnish i Vacon, eyinxenye ye-Danish, silwenza izakhiwo yemodyuli, ungakha apho izixhobo eziyimfuneko ngaphandle iinkcukacha ezingeyomfuneko, ngokukuvumela ukugcina ku kumacandelo. Kukho kwakhona Converters inkxalabo ngamazwe ABB, esetyenziswa kwishishini kunye nobomi bemihla ngemihla.

Xa nokubuyekezwa, ngokuba imisebenzi elula yesiqhelo, ungasebenzisa converters cheap zasekhaya kunye uphawu iimfuno ezinzima, nto leyo iinketho kakhulu ngakumbi.

isiphelo

Uqhubo Ukuxhaphaka ulawula imoto ngokutshintsha rhoqo kunye namandla awo le ombane yobonelelo, ngaloo ndlela ukhusela kuyo iziphene: ukucima kombane, beesekethe elifutshane, ukuqhubeka umbane. actuators ezinjalo zombane enze imisebenzi ezintathu ezinxulumene ne kukukhawuleziswa, elekhtrons nesantya injini. Oku kuphucula ukusebenza kwezixhobo kwiindawo ezininzi zobugcisa.