BLOG

Mekhoa e tloaelehileng ea taolo ea makoloi bakeng sa BLDC brushless DC motors

Li-motors tsa Brushless DC lia ikemela (ho fetola tsela ea ho itsamaisa), kahoo li rarahane ho feta ho li laola.
Taolo ea motlakase ea BLDC e hloka kutloisiso ea boemo ba rotor le mokhoa oa ho lokisa le ho tsamaisa motlakase. Bakeng sa taolo ea lebelo le koetsoeng, ho na le litlhoko tse ling tse peli tseo lebelo la rotor / kapa motlakase oa motlakase le pontšo ea PWM e lekantsoeng ho laola lebelo la motlakase le matla.
Enjene e nyane ea DC e se nang brushli-motor li ka sebelisa li-edge - kapa li-centre-array PWM ho latela litlhoko tsa kopo.Bongata ba lits'ebetso bo hloka feela ts'ebetso e fapaneng ea lebelo 'me e tla sebelisa lihlopha tse tšeletseng tse ikemetseng tse ikemetseng bakeng sa pontšo ea PWM. Sena se fana ka qeto e phahameng ka ho fetisisa e ka khonehang.Haeba kopo e hloka boemo ba seva, matla a braking, kapa ho khutlisa matla, ho khothaletsoa tšebeliso ea lets'oao la PWM le tlatselletsang bohareng.
E le hore u utloisise boemo ba rotor, BLDC e amohela Hall effect sensor ho fana ka mokhoa o feletseng oa ho kenya boemo.Sena se lebisa tšebelisong ea mela e mengata le litšenyehelo tse phahameng.Sensorless BLDC taolo e felisa tlhokahalo ea Holo ea sensor 'me ho e-na le hoo e sebelisa matla a morao a motlakase (EMF). ) ea motlakase ho bolela esale pele boemo ba rotor.Taolo e se nang kutlo e bohlokoa bakeng sa lits'ebetso tse theko e tlase tse fapaneng tsa lebelo joalo ka li-fan le lipompo.Tšebelisong ea motlakase oa BLDC, sehatsetsi le sehatsetsi sa moea le sona se hloka taolo e se nang kutlo.
Ho kenya le ho tlatsa nako ea ho se be le moroalo
Boholo ba li-motor tsa BLDC ha li hloke PWM e tlatselletsang, ho kenya nako ea ho se be le moroalo, kapa puseletso ea nako ea ho se be le moroalo. Likopo feela tsa BLDC tse ka hlokang litšobotsi tsena ke li-motor tsa servo tsa BLDC tse sebetsang hantle haholo, li-sinusoidal excited BLDC motors, brushless AC, kapa PC synchronous. makoloi.
Laola algorithm
Li-algorithms tse ngata tse fapaneng tsa ho laola li sebelisoa ho fana ka taolo ea likoloi tsa BLDC.Ka tloaelo, li-transistors tsa matla li sebelisoa e le li-linear regulators ho laola motlakase oa motlakase.Mokhoa ona ha o sebetse ha o khanna li-motor tse matla.Li-motor tse matla tse phahameng li tlameha ho laoloa ke PWM 'me li hloka microcontroller ho fana ka mesebetsi ea ho qala le ho laola.