Question

why not used dimmer instead of vfd?detail answer with example.like we use dimmer to control speed of fan,why not used vfd?why dimmer used.
explain vfd controller working ?

compare vfd with other methods/ devices which are used to control speed of three phase induction MOTOR.

Answer 1

Dmme>s ant devices connected to tre light erupmeno And wd to conbel the ankensity ar brightnes t the light uu get lots benıfta Tt potet the motos from ovea aunng when thene 込 a ove γ CL+ sent conditon .. -ft VFD transforms the 丁n volag and eueney into aay ng voltage 4 Preiueney ange to combol th eter torzua e Tn peut mains Constant VFD used to control the temperatuse and th Pressure σ flow authout wing a sepaYte con oller. eSSUuI Inductim motvy VED for contro Uer the Speed

se dmmer to cenol the sped o tan acause t redlutes the ampenge t the mot pthout *clucgbe tare but st mot possibla n Case VFD because here the vo ltege variea oSSI aclovdingly the ampe A vanable trequenc de a adjustcblt Speed ckina pinciplo i adtustina the elechical Supply to an ac motrs with a coesponda enuenug and votag chang* in mo ond tosqua output the motur spee Rechfier Inverte ย้า Conhol unit th ae supply t» Dc Suprly Diffevent des ge ane qvalable and this ara sileetel accovding to th variabe freluency dives

It consist me Combined er 1nductth, and capaci fry Invater The invester cenvests the xcctn fred and ard vo Itage . This normalty achieved by gencnhn0 Cenbol unt The conbrol unit con hols the hole and conbol the rectrfier, the ntesmedata cirt and InVirter to deliver the Covrect output Contollg he pe Conャclung the statta Volta ge , Connclt. natha. stup and t Chenata te ave met so much efteckve be cause votnge changing nu, mumbe. c.t poles But Speed sill also veduced but at the sama the e of the motby aloo qoe dlown . So

heth tonque and speed cannot be conbolled accuel But case to kert constamt and votage io altered acco vdngls Then torque lull also ımþovra and also n coae ol VfD b aduthe 6rouney eb motzx Suuppley Speed of the motur can albo da*be diectly propostenal to e Sruenty