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MOTOR JEDNOSMERNE STRIJESA NEZAVISNOM POBUDOM

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Stator(Pobudn

inamotaj)

Linij!u"#a

MU

Ia

R

a

E$%&'

U

+= IaRaU

Rotor(namotaj

indu"ta)

*t"i+

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MU$+on#t,

Ia

E$%&'

U

STA-IONARNO STANJE

Ra&Ia

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S.a"o o./anj br0in ri "on#tantnomnaonu naajanja1 0a2t.a o./anj#truj motora "a"o bi # o./aomomnat mora, Po./anj #truj i0a0i.ao./anj ada naona na Ra, Da bi #odr3a4a naon#"a ra.not3a otrbno jda # #manji "ontra4"tromotorna #i4a

, 5a"o br0ina trba da # o./a1 #4dida j o.o jdino mo6u/ #manjnjm!u"#a %, O.aj o#tua" na0i.a #slabljenje polja.

E$%&'

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nom =1 12 > 23 >

U$+on#t,

U$+on#t,

U$+on#t,

nomaa IR _ 2_aa IR 3_aa

IR

nomnomnomE =

222 =E

333 =E

nom =1 12 < 23

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ME7ANI85A 5ARA5TERISTI5A Po4a0/i od jdna*ina u #ta+ionarnom

#tanju9

I0 r. jdna*in ima #9

=

+=

IaMe

IaRaU

Ra

UIa

=

( )fMe =

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Zamnom u dru6u jdna*inu9

:to rd#ta.4ja jdna*inu ra.

Da bi#mo na+rta4i m2ani*"u "ara"tri#ti"u("oja od6o.ara 6ornjoj jdna*ini ra.)1

odrdi/mo ta*" r#+anja #a i Mo#om,

=

=

RaRa

UMe

Ra

UMe

2

( )fMe =

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Da"41 0a dobija #

:to rd#ta.4ja o4a0ni momnatmotora,

Obrnuto1 0a M$; dobija #9

0=

Ra

UM

e

=

0

U=

0

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Da"4 m2ani*"a "ara"tri#ti"ai064da o.a"o9

eM

U=

0

Ra

UMe

=

0

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NA8INI RE

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Sa #4i" # .idi da # radna ta*"a1 atim i br0ina mo3 mnjati "ada #

mnjaju jdna*in m2ani*""ara"tri#ti", 5a"o #u naon U i !u"#(tj, Struja obud)1 jdin

"ontro4abi4n .4i*in1 0a"4ju*uj # da

# romnom o.i2 .4i*ina mo3r6u4i#ati br0ina,

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RE

Radnata*"a?

23 @U=U=U>U?

Mot$+on

#t,

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eM

U?@U>@U=$Unom

U=U>U?

11

2

3 Mot$+on#t,