Cov yam ntxwv ntawm DC brushless motor

Cov brushless DC lub cev muaj zog yog ib hom synchronous lub cev muaj zog, uas yog hais, kev nrawm ntawm lub cev muaj zog rotor cuam tshuam los ntawm kev nrawm ntawm qhov sib nqus teb ntawm lub cev muaj zog stator thiab tus naj npawb ntawm rotor ncej (p):

n=60 hli f / pab. Nyob rau hauv rooj plaub ntawm tus lej ruaj khov ntawm tus ncej rotor, hloov qhov zaus ntawm tus stator tig sib nqus teb tuaj yeem hloov pauv rotor nrawm. Brushless DC lub cev muaj zog yog lub tshuab ua haujlwm sib xyaw nrog kev tswj hluav taws xob (tsav tsheb) los tswj qhov zaus ntawm tus stator' kev sib hloov lub teb sib nqus thiab tawm tswv yim lub cev muaj zog rotor' nrawm mus rau qhov chaw tswj kom rov kho dua , txhawm rau ua tiav txoj hauv kev ze rau cov yam ntxwv ntawm DC lub cev muaj zog. Ntawd yog hais, DC brushless lub cev muaj peev xwm tseem tuaj yeem tswj lub cav rotor kom tswj tau qee qhov nrawm thaum qhov hloov pauv hauv qhov ntsuas ntsuas ntau.

Kev txhuam txhuam DC tsis suav nrog chav fais fab thiab chav tswj hwm raws li qhia hauv daim duab (1): Lub zog siv hluav taws xob muab hluav taws xob peb theem rau lub cev muaj zog, thiab chav tswj hwm hloov pauv lub zog siv hluav taws xob raws li xav tau.

Cov khoom siv hluav taws xob tuaj yeem nkag ncaj qha ncaj qha tam sim no (feem ntau yog 24v) lossis hloov pauv tam sim no (110v/220v). Yog tias cov tswv yim hloov pauv tam sim no, nws yuav tsum xub hloov mus rau qhov ncaj qha tam sim no los ntawm tus hloov pauv. Txawm hais tias nws yog DC cov tswv yim lossis AC cov tswv yim, nws yog qhov tsim nyog los hloov DC qhov hluav taws xob los ntawm qhov hloov pauv mus rau 3-theem hluav taws xob kom tsav lub cav ua ntej nws raug xa mus rau lub cav kauj. Inverter (inverter) feem ntau muab faib ua caj npab sab saud (q1, q3, q5)/qis caj npab (q2, q4, q6) los ntawm 6 lub zog transistors (q1 ~ q6) thiab txuas nrog lub cev muaj zog ua qhov hloov pauv uas tswj kev ntws los ntawm lub cev muaj zog kauj. Chav tswj hwm muab PWM (Pulse Width Modulation) los txiav txim siab hloov pauv zaus ntawm lub zog transistors thiab lub sijhawm hloov pauv hloov pauv. Brushless DC motors feem ntau vam tias yuav siv rau kev tswj ceev qhov ceev tuaj yeem ruaj khov ntawm tus nqi teeb tsa thaum hloov pauv, thiab qhov nrawm yuav tsis hloov pauv ntau. Yog li ntawd, lub tsev-sensor uas tuaj yeem nkag siab qhov sib nqus tau teeb tsa sab hauv lub cev raws li qhov nrawm. Kev kaw lub voj kaw kuj tseem siv ua lub hauv paus rau kev tswj ntu ntu. Tab sis qhov no tsuas yog siv los tswj kev nrawm thiab tsis tuaj yeem siv ua qhov chaw tswj.

Nta Brushless DC Tsav:

1. Nws tuaj yeem hloov DC lub zog tswj ceev, hloov pauv + zaus hloov pauv lub cev muaj zog tswj nrawm, asynchronous motor + txo kev tswj ceev;

2. Nws muaj qhov zoo ntawm cov tsoos DC lub cev muaj zog, thiab tib lub sijhawm tshem tawm cov pa roj carbon txhuam thiab plam lub nplhaib qauv;

3. Nws tuaj yeem khiav ntawm qhov nrawm thiab lub zog siab, tshem tawm qhov xav tau rau tus txo qis kom ncaj qha tsav lub nra hnyav;

4. Qhov me me, lub cev nyhav, thiab cov zis loj;

5. Cov yam ntxwv zoo heev, qhov nruab nrab zoo thiab qis ua kom lub zog muaj zog, pib lub zog loj thiab pib me me tam sim no;

6. Kev tswj tsis tau nrawm, dav kev tswj ceev ntau thiab muaj peev xwm ua kom muaj zog ntau dua;

7. Mos pib thiab nres, cov yam ntxwv zoo braking, tuaj yeem txuag tus thawj cov khoom siv nres lossis lub tshuab hluav taws xob sib nqus;

8. Kev ua haujlwm siab, lub cav nws tus kheej tsis muaj qhov ua rau poob siab thiab txhuam cov pa roj carbon poob, tshem tawm ntau theem ua kom poob qis, thiab kev txuag hluav taws xob tag nrho tuaj yeem ncav cuag 20%~ 60%.

9. Muaj kev ntseeg siab, ruaj khov zoo, muaj zog hloov pauv tau, kho yooj yim thiab kho;

10. Tiv taus kom muaj kev kub ntxhov thiab kev co, suab nrov qis, tsis muaj kev vibration, kev ua haujlwm du thiab lub neej ntev;

11. Tsis muaj txim taws, tshwj xeeb tshaj yog tsim rau cov chaw tawg, nrog hom tawg-pov thawj;

12. Trapezoidal wave magnetic field motor thiab sine wave magnetic field motor tuaj yeem xaiv tau raws li qhov xav tau.