Xa kuthelekiswa nemoto yeDC kunye ne-asynchronous motor, ezona mpawu ziphambili zobugcisa zeBrushless DC motor zezi:

1.Iimpawu zokusebenza ze-DC motor zifumaneka ngolawulo lombane. Inokulawulwa ngcono kunye noluhlu lwesantya esibanzi.

I-2.Ulwazi lwengxelo yesikhundla se-Rotor kunye ne-electronic multiphase inverter driver iyafuneka.

3.Essentially, i-AC motor inokusebenza ngesantya esiphezulu ngaphandle kwe-spark kunye ne-abrasion yebrashi kunye ne-commutator. Inokuthembeka okuphezulu, ubomi obude bokusebenza kwaye akukho mfuneko yokugcinwa.

I-4.I-motor ye-Brushless DC inamandla amakhulu, akukho lahleko ye-rotor kunye nobushushu, kunye nokusebenza okuphezulu: xa kuthelekiswa nedatha, ukusebenza kakuhle kwe-7.5 kW motor asynchronous yi-86.4%, kunye nokusebenza komthamo ofanayo we-brushless DC motor inokufikelela kuma-92.4%. .

5.Kufuneka kubekho iinxalenye zolawulo lwe-elektroniki, ixabiso lilonke liphezulu kunemoto ye-DC.

Zimbini iindidi zeenjini ezisetyenziswa kwinkqubo ye-AC: i-induction motor kunye nemagnethi esisigxina ye-synchronous motor. Imagnethi esisigxina ye-synchronous motor inokwahlulwa ibe yi-sinusoidal back EMF umazibuthe osisigxina motor (PMSM) kunye ne-square wave umva EMF brushless DC motor (BLDCM) ngokwemigaqo yokusebenza eyahlukeneyo. Ukuze ukuqhuba kwabo kwangoku kunye nemo yokulawula yahlukile.

I-EMF yangasemva ye-sinusoidal yemagnethi esisigxina ye-synchronous motor is sinusoidal. Ukuze i-motor ivelise i-torque egudileyo, i-current equkuqelayo kwi-motor winding kufuneka ibe sinusoidal. Ke ngoko, isiginali ye-rotor eqhubekayo kufuneka yaziwe, kwaye i-inverter inokubonelela nge-voltage ye-sinusoidal okanye yangoku kwi-motor. Ke ngoko, i-PMSM kufuneka ithathe amandla ombane aphezulu okanye akhoyo. Isisombululo se-encoder yendawo okanye isisombululi sikwanzima kakhulu.

I-BLDCM ayifuni i-sensor ye-high-resolution sensor, ifowuni yempendulo ilula, kwaye i-algorithm yokulawula ilula. Ukongeza, i-air gap magnetic field ye-BLDCM i-trapezoidal wave isebenze ngakumbi kune-PMSM wave sinusoidal wave, kwaye ubuninzi bamandla be-BLDCM buphezulu kune-PMSM. Ke ngoko, isicelo kunye nophando lwemagnethi esisigxina ye-brushless DC motor ifumene ingqalelo engakumbi.