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Speed Control Of DC motor UsingPulse Width Modulation

Guided By:Ms.HemlataVerma

Ajadkumar!"#!$#!""%)

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ABSTRACT

 &he proje't re(eals the digital 'losed loop'ontrol s)stem for speed 'ontrol of DC motorusing PWM te'hni*ue. +n present da)s thepo,er semi'ondu'tor de(i'es ha(e 'ompletel)

re(olutioni-ed the 'ontrol of dri(es espe'iall)in the area of 'ontrol usage of th)ristors igt/s

po,er MOs01& et'.2 ,as in'reased

 &he digital 'ir'uit 'an e interfa'ed tomi'ro'ontroller. So that the speed 'an e

'ontrolled ) Mi'ro'ontroller there ) makingspeed 'ontrol of DC motor e(en more easil).

P,m te'hni*ue to the digital 'ir'uit dri(es the'omponent 'orrespondingl) speed ,ill 'hange.

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+ntrodu'tion Of PWM

 Pulse 3 an ele'tromagneti' ,a(eormodulation thereof of rief

durationWidth Modulation 3 to adjust to

or keep in

proper measure or proportion the,idth ofthe pulse ,ith respe't to the

fre*uen') of the,a(e

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+ntrodu'tion of Pulse ,idthmodulation

Di4erent t)pes of,a(es5 sine2 s*uare2

sa,tooth2 trianglePWM uses s*uare

,a(es

Dis'rete on 6 o4(alues

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CLASSIFICATION OF DCMOTORS

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1 POWER SEMICONDUCTORDEVICES CLASSIFICATION

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Diode symo! "#d V$I%&"'"%(e'is(i%s

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DC mo(o' seed %o#('o!usi#* PWM me(&od

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B!o%+ Di"*'"m O, Po-e'Su!y

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B!o%+ Di"*'"m O, SeedCo#('o!!e'

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A'%&i(e%(u'e o, ./C0

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BLOC2 DIAGRAM

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CIRCUIT OVERVIEW

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Speed 'ontrol of d' motor ,ithPWM

Ad(antage5 &he motor 'onsumes less po,er

Signi7'antl) less energ) loss due

to heatAllo,s 7ner motor 'ontrol

Disad(antages5

Shortens the life of the motor )putting

more stress on the fan earings

and ,indings

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