Incazelo ye-brushless DC motor

I-brushless DC motor inesimiso sokusebenza esifanayo nezici zohlelo lokusebenza njengemoto ejwayelekile ye-DC, kodwa ukwakheka kwayo kuhlukile.Ngaphandle kwe-motor ngokwayo, yangaphambili nayo inomjikelezo owengeziwe wokushintsha, futhi injini ngokwayo kanye nesifunda sokushintsha kuhlanganiswe eduze.I-motor ngokwayo yama-motor amaningi aphansi amandla ihlanganiswe ne-commutation circuit.Kusukela ekubukeni, i-DC brushless motor ifana ncamashi ne-DC motor.

I-motor ngokwayo ye-brushless DC motor iyingxenye yokuguqula amandla e-electromechanical.Ngokungeziwe ezingxenyeni ezimbili ze-motor armature kanye ne-excitation yamagnetic unomphela, i-brushless DC motor nayo inezinzwa.I-motor ngokwayo iwumgogodla we-brushless DC motor.I-brushless DC motor ayihlobene kuphela nezinkomba zokusebenza, umsindo nokudlidliza, ukwethembeka nempilo yesevisi, kodwa futhi ihilela izindleko zokukhiqiza nezindleko zomkhiqizo.Ngenxa yokusetshenziswa kwenkundla kazibuthe unomphela, i-brushless DC motor ingasusa ukwakheka kwendabuko kanye nesakhiwo semoto ejwayelekile ye-DC, futhi ihlangabezane nezidingo zezimakethe zezicelo ezahlukahlukene.Ukuthuthukiswa kwensimu kazibuthe unomphela kuhlobene kakhulu nokusetshenziswa kwezinto ezisetshenziswa unomphela uzibuthe.Ukusetshenziswa kwezinto zikazibuthe ezihlala unomphela zesizukulwane sesithathu kukhuthaza ama-brushless DC motors ukuthi aqhubekele phambili ekusebenzeni kahle okuphezulu, ukwenza i-miniaturization nokonga amandla.

Ukuze uzuze ukushintshwa kwe-elekthronikhi, i-brushless DC motor kufanele ibe nesignali yendawo yokulawula isekethe.Ezinsukwini zakuqala, inzwa yendawo ye-electromechanical yayisetshenziselwa ukuthola isignali yendawo, futhi manje inzwa yendawo kagesi noma indlela yayo ye-DC brushless motor isetshenziswa kancane kancane ukuze kutholwe isignali yendawo.Indlela elula ukusebenzisa isignali engaba khona yokujika kwe-armature njengesignali yendawo.I-brushless DC motor kumele ibe nesiginali yejubane ukuze ibone ukulawulwa kwejubane lemoto.Isignali yesivinini itholakala ngendlela efanayo yokuthola isignali yendawo.Inzwa yejubane elula iyinhlanganisela ye-tachogenerator yokulinganisa imvamisa kanye nesekethe ye-elekthronikhi.Umjikelezo wokushintsha we-brushless DC motor uqukethe izingxenye ezimbili, ingxenye yokushayela kanye nengxenye yokulawula.Lezi zingxenye ezimbili akulula ukuzihlukanisa.Ikakhulukazi kumasekhethi anamandla aphansi, lezi zingxenye ezimbili zivame ukuhlanganiswa zibe yisekethe ehlanganisiwe yesicelo esisodwa.

Ku-brushless DC motor, i-drive circuit kanye ne-control circuit ingahlanganiswa kwenye yamamotho anamandla aphezulu.I-drive circuit ikhipha amandla kagesi, ishayela i-armature winding ye-motor, futhi ilawulwa yi-control circuit.Njengamanje, isekethe ye-DC brushless motor drive ishintshiwe isuka kusimo sokukhulisa umugqa yaya esimweni sokushintshwa kwe-pulse wide modulation, futhi ukwakheka kwesekethe okuhambisanayo nakho kushintshiwe kusuka kumjikelezo we-transistor discrete kuya kumjikelezo ohlanganisiwe we-modular.Amasekhethi ahlanganisiwe ahlanganisa amandla ahlanganisa ama-bipolar transistors, ama-transistors omphumela wenkundla yamandla kanye nama-bipolar transistors wesango elihlukile.Nakuba i-isolation gate field effect bipolar transistor ibiza kakhulu, kufaneleka kakhulu ukukhetha i-DC brushless motor ngokombono wokuthembeka, ukuphepha nokusebenza.