-Drive imvamisa: incazelo kanye nokubuyekeza

imvamisa drive isiqondiso evumela usebenzisa Converter ekhethekile kalula ukushintsha izindlela ukusebenza kwe-motor: ukwenza kube ukuqala, ayeke, ukushesha, braking, ukushintsha ijubane ukujikeleza.

Ukushintsha imvamisa supply voltage kuholela ushintsho in the velocity emincane ye amandla kazibuthe stator. Lapho imvamisa incipha, ijubane injini incipha, kanye ukushelela iyakhula.

Umgomo we operation ye imvamisa Converter drive

I ethile eyinhloko yinkimbinkimbi indlela motors isiqondiso nesivinini izindlela ezivamile: ekushintsheni voltage ukunikezela kanye nokwethulwa Windings ezengeziwe resistances wesifunda. Okuningi eyinkimbinkimbi kuyinto idrayivu imvamisa motor. Kuze kube muva nje, i-converters pricey, kodwa ukubonakala IGBT-transistors nokulawula sekhompiyutha izinhlelo ukuvumele abakhiqizi angaphandle ukudala engambi eqolo zedivayisi. The esiphezulu ofinyelelekayo namuhla static imvamisa converters.

I velocity emincane ye ω stator kazibuthe izinguquko ₀ silingane ƒ imvamisa ₁ ngokuvumelana ifomula:

ω ₀ = 2π × ƒ ₁ / p,

lapho p - nenani isigxobo ngazimbili.

Indlela inikeza ukulawula bushelelezi isivinini. Ngalesi isivinini isiliphu motor is ukhulise.

Ukuze uthole okusezingeni eliphezulu amandla ukusebenza injini - nekusebenta, amandla isici nesikhathi sindisa ikhono kanye nobuningi zokushintsha voltage ukuncika ukuzimisela:

• njalo umthwalo torque engu - U ₁ / ƒ ₁ = const;
• Fan uhlamvu umthwalo torque engu - U ₁ / ƒ _{Februwari ¹} = const;
• umthwalo torque engu kuyinto inhlukanozigaba ukuba ijubane - U ₁ / √ ƒ ₁ = const.

Lezi imisebenzi ezisetshenziswa nge transducer nalapho ukubukeka kwazo kushintsha nobuningi voltage kuya stator motor. Ukulondoloza amandla ngokulawula nge kudingekile inqubo nemingcele: ingcindezi futha, umlandeli umthamo, isilinganiso ukufunza umshini, njll Amapharamitha ziyahlukahluka ngokushelela ..

Izindlela ukulawulwa imvamisa lokungeniswa kanye zokuvumelanisa motors

Imvamisa elawulwa ngemoto ngesisekelo indlela squirrel-yezinyoni motors izindlela ezimbili ukusebenzisa ukuphathwa - scalar futhi vector. Esimweni sokuqala, kanyekanye ukushintsha amplitude kanye nokuvama supply voltage.

Lokhu kuyadingeka ukuze balondoloze injini ukusebenza, ngaphezu kwakho konke - isilinganiso njalo torque yayo esiphezulu torque resistive. Ngenxa yalokho ahlale nekusebenta efanayo namandla isici lonke Ukujikeleza ububanzi.

isilawuli Vector ushintsho kanyekanye e amplitude futhi isigaba yamanje stator.

Imvamisa uhlobo zokuvumelanisa motor idrayivu ukusebenza imithwalo ongaphakeme, ngesikhathi ukukhula eyeqa amagugu kuvunyelwe ofanayo lungaphela.

Izinzuzo imvamisa drive

Imvamisa ukulungiswa has lahlukene izinzuzo iqhathaniswa nezinye izindlela.

1. Automation yenjini nokukhiqiza izinqubo.
2. isiqalo Smooth ekuqedeni amaphutha ejwayelekile ezenzeka phakathi injini ukushesha. Ukwandisa imvamisa drive siyiqiniso imishini ngokunciphisa ukuminyana.
3. Kwandisa kahle kwezomnotho kanye nokusebenza ukushayela iyonke.
4. Ukudala njalo ijubane motor ngokuzimele ubunjalo umthwalo, okuyinto ebaluleke ngesikhathi transients. Ukusebenzisa impendulo kwenza kube nokwenzeka ukuba silondoloze njalo ngesivinini injini at amathonya ahlukahlukene perturbing, ikakhulukazi ngaphansi imithwalo kushintshana.
5. Converters kungenziwa ididiyelwe kalula zibe izinhlelo ezikhona lobuchwepheshe ngaphandle kwezinguquko ezinkulu ayeke izinqubo. Ububanzi amandla kukhulu, kodwa nokwanda amanani abo kakhulu anda.
6. Ithuba lokuba enqabe variators, reducers, ESIKLINYAYO nezinye izinto ukulawula noma bandise kwesicelo sabo. Ngenxa yalokhu, kuba eside kwagezi.
7. Ukususwa kwezimiso emiphumeleni elimazayo transients imishini senqubo, njengesikhathi uthuthumele wokubacindezela noma ukwanda kwemithwalo ingcindezi uketshezi iphayiphi ngenkathi ekunciphiseni ukusetshenziswa kwalo ebusuku.

amaphutha

Njengazo zonke inverters chastotniki kuyimithombo ukugxambukela. Bafanele izihlungi ezifakiwe.

Inani Brand kuphezulu. It kwandisa kakhulu nge okwandisa amandla apparatuses.

Imvamisa ukulungiswa nalapho bethutha uketshezi

Ngezinye kumasayithi lapho ukudluliswa senziwa yamanzi kanye nezinye iziphuzo, ukugeleza ukulungiswa senziwa isikhathi esiningi nge valve valve. Okwamanje, ezithembisa isiqondiso ukusebenzisa imvamisa drive futha noma uxhaso ngoba ngamandla ka izindwani.

Ukusebenzisa inverter alternative mpintsha unika energy saving effect ku-75%. Valve, Ukulawula ukugeleza ketshezi, lingasebenzi umsebenzi ewusizo. Lokhu kwandisa amandla ukulahlekelwa futhi into zokuhamba yayo.

Imvamisa idrayivu kwenza kube nokwenzeka ukuba silondoloze ingcindezi njalo umthengi lapho beshintsha ketshezi ukugeleza rate. Lihlinzeke kusukela isignali ingcindezi inzwa kuya actuator olushintsha injini ijubane ukujikeleza futhi ngaleyo ndlela ulawula umfutho yayo ngenkathi sigcina predetermined ukugeleza rate.

futha amayunithi ziphethwe ngokushintsha ukusebenza kwabo. Amandla ukusetshenziswa kusukela futha ungaphakathi ukwencika intilibathwa nokusebenza noma ijubane isondo. Uma turnovers ukunciphisa factor 2, ukusebenza futha ngeke lehle kasi- 8. Ukuba khona sansuku zonke ukusetshenziswa kwamanzi ukucacisa ukonga amandla ngalesi sikhathi, uma ukulawula umkhiqizo imvamisa drive. Ngenxa kungenzeka ukuba ukushintsha isiteshi ukudonsa futhi kanjalo nokwandisa ingcindezi yamanzi amanethiwekhi.

Jobe ukupholisa air conditioning system

Umkhawulo komoya e ukupholisa izinhlelo akuyona njalo kunesidingo. izimo zokusebenza kungadinga ukusebenza imihlatshelo. Ngokwesiko, le osebenza nobunzima lapho ijubane isondo alushintshi. Kuyinto elula kakhudlwana ukushintsha komoya izinga ngenxa imvamisa elawulwa drive lapho beshintsha izimo ezithile zonyaka nesimo sezulu, ukushisa, umswakama, umusi kanye amagesi elimazayo.

Ukulondoloza igesi e ukupholisa air conditioning system ibangelwa yini leliphasi kunaleyo iziteshi uzotshala, kusukela ukujikeleza amandla ukusetshenziswa umsebenzi intilibathwa isivinini.

Iinsetjenziswa inverter

Modern imvamisa drive wesifunda luyatholakala kwi Converter double. Siqukethe rectifier kanye inverter ishayela nge uhlelo lokulawula.

Ngemva ukulungiswa kwananoma isignali voltage eshelelayo elicwengekileyo ngabondla i inverter nge eziyisithupha Semiconductor ukushintsha, lapho ngamunye wabo ixhunywe Windings stator we motor lokungeniswa. Unit oguqula isignali kuyalungiswa ku esigabeni wayefisa imvamisa futhi ukuphakama kwawo namandla awo. Amandla IGBT-Transistors okukhipha izigaba abe okusezingeni eliphezulu usuke imvamisa futhi inikeza uphawu olucacile unxande ngaphandle ukuhlanekezela. Ngenxa izakhiwo ukusefa motor emazombezombe zamanje ijika ifomu okukhipha yabo sinusoidal.

Izindlela amplitude isignali ukulungiswa

Ubukhulu lo voltage okukhiphayo kulawulwa izindlela ezimbili:

1. Amplitude - Ukushintsha inani voltage.
2. Pulse ukushintshashintsha kwezwi ububanzi - indlela ukuguqula isiginali pulsed lapho kushintsha ubude, nezingalo imvamisa uhlala ingashintshiwe. amandla Kukhona incike ububanzi ishayela.

Eyesibili indlela elisetshenziswe kaningi ngokuqondene ukuthuthukiswa sekhompiyutha ubuchwepheshe. inverters Modern ekhiqizwa ngesisekelo ikhiyiwe GTO-thyristors noma IGBT-transistors.

Amathuba nokusetshenziswa converters

Imvamisa drive inezici eziningi.

1. isilawuli imvamisa ezintathu okhombisa supply voltage kusuka zero kuya 400 Hz.
2. Ukusheshisa noma deceleration we motor kagesi ka 0.01 imizuzwana. ku-50 imiz. ngumuntu umlayo ngezikhathi ezithile (ngokuvamile - lwento). Lapho ukushesha kungenzeka nje kuphela ukuze wehlise, kodwa lenyukele 150% kokuqala torque ashukumisayo.
3. Reverse motor ne predetermined ukushesha kanye deceleration izindlela ukuze ijubane oyifunayo ngakolunye uhlangothi.
4. I converters esetshenziswa adjustable Ukuvikelwa electronic ngokumelene short circuit, sindisa, umhlaba ukuvuza bese ephula emigqeni motor supply.
5. Converters phezu ekhombisa digital kuvezwa idatha mayelana nemingcele zabo: imvamisa, voltage, amandla, isivinini, ukugeleza, nabanye.
6. I converters kuyalungiswa wamanje-imvamisa izici kuye ngokuthi yini edingekayo umthwalo injini. zokulawula umsebenzi okusekelwe kuzo zinikezwa abalawuli ugibelile.
7. Ukuze imisindo ephansi kubalulekile ukusebenzisa control vector, ukuvumela ukusebenza motor torque engu okugcwele ukulondoloza ijubane njalo lapho imithwalo ukushintsha control kushaft torque engu. Imvamisa ngokulungisa igiya isebenza kahle nge isingeniso ofanele motor idatha nameplate, futhi kulandela ukuphumelela ukuhlolwa yayo. izinkampani imikhiqizo Akwaziwa Hyundai, Sanyu, nabanye.

Ukusetshenziswa kwe-converters ezilandelayo:

• iphampa emanzini ashisayo amakhaza nokufudumala;
• kodaka, isihlabathi futhi Umtfumbu iphampa concentrators;
• eveza izinhlelo: zokuthutha, roller zokuthutha, kanye nezinye izindlela ;.
• stirrer, isigayo, grinder extruders, dispensers Izitsha zokuphakela;
• Centrifuge;
• zommbila;
• imishini Metallurgical;
• imishini imishini;
• imishini kagesi;
• Excavator kanye crane imishini, izindlela ezandleni.

Abakhi imvamisa inverters, ukubuyekezwa

umakhi Domestic sekuqalile ukwenza imikhiqizo efanelekayo abasebenzisi izinga kanye nentengo. Inzuzo yikhono ngokushesha uthole umshini kwesokudla, futhi iseluleko enemininingwane zokusebenzisa.

Inkampani "uhlelo Ngempumelelo" ukhiqiza imikhiqizo ye-serial kanye nemishini party abanolwazi. Imikhiqizo esetshenziswa ukusetshenziswa yasekhaya, amabhizinisi amancane umkhakha. Umkhiqizi "Vesper" ukhiqiza uchungechunge eziyisikhombisa converters, okuhlanganisa multi-functional, efanelekayo imishini kakhulu ezimbonini.

Umholi ekukhiqizeni kuyinto chastotnikov IsiDanishi kusukela Danfoss. imikhiqizo yayo asetshenziswa ukupholisa izinhlelo, kondtsionirovaniya, amanzi futhi bafudumale. Inkampani Finnish le Vacon, oyingxenye Danish, silwenza izakhiwo Modular, lapho ungase ukwazi ukwakha amadivayisi ezidingekayo ngaphandle ngemininingwane engadingekile, ukuvumela ukuba ugcine izingxenye. Kukhona futhi converters ukukhathazeka ngamazwe ABB, elisetshenziswa umkhakha nokuphila kwansuku zonke.

Ukwahlulela ukubuyekezwa, ngoba imisebenzi elula isimiso, ungasebenzisa ezishibhile converters yasekhaya futhi brand izidingo eziyinkimbinkimbi, okuyinto ongakhetha kakhulu ngaphezulu.

isiphetho

Imvamisa drive elawula motor ngokushintsha nobuningi amplitude supply voltage, ngaleyo ndlela ukuvikela ke kusukela amaphutha: sindisa, short circuit, ngokuqhubeka okuphakela amandla. Okunjalo actuators kagesi imisebenzi emithathu eyisisekelo elihlobene ne ukusheshisa, braking nesivinini injini. Lokhu kwenza kube ngcono ukusebenza kahle imishini ezindaweni eziningi ubuchwepheshe.