chuyÊn ĐỀ truyỀn ĐỘng ĐiỆn

8/8/2019 CHUYN TRUYN NG IN

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BO CO CHUYN TRUYN NG INGio Vin hng dn: Nguyn ng Khang

Chuyn I: H iu Khin S ng C Mt Chiu

Trng i Hc Cng Nghip H Ni

R BB C MSX

o lng v cm bin

1 pha3 pha

~

Tn hiuphn hi

-

Tn hiu t

+

SV thc hin: Nhm 2


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PHN1. C S L THUYT V H IU KHINTRUYN NG IN

1.1. Cu trc h S cu trc

R BB C MSX

o lng v cm bin

1 pha3 pha

~

Tn hiuphn hi

-

Tn hiu t

+


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1.1. Cu trc h

Cc khi chc nng1. Khi BB (B bin i)

- L nhng b bin i cng sut.Nh b chnh lu, b bmxung 1 chiu, iu p xoay chiu, b bin tn

2. Khi C (ng c)

- S dng cc loi ng c 1 chiu, ng c khng ngb, ng c ng b. V mt s loi ng c c bit

nh ng c sevor, ng c bc, ng c 1 chiukhng chi than, ng c truyn ng thng.


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1.1. Cu trc h3. Khi MSX (My sn xut)

- Ph thuc vo dy truyn sn xut

- Cc my sn xut nh bng ti, cu trc, my cun

4. Khi o lng v cm bin

- Tn hiu ra thng 2 dng

+ Tn hiu chun ha dng DGT hoc ANALOG

+ Tn hiu cha chun ha : Ta a qua b x l tn hiu

thu c dng chun ha

o lngV

Cm bin

Tn hiu vo Tn hiu ra


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1.2. Cc b bin i cng sut Chnh lu khng iu khin (s dng van l cc

diode)

- Chnh lu cu mt pha

itititit

2

~

1

4 3

a

b

e(t) ~

1

4 3

a

b

~

1

4 3

a

b

~

1

4 3

a

b

Hnh 2.1 S chnh lu cu mt pha


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1.2. Cc b bin i cng sut

Uab

a

b

Hnh 2.2 S chnh lu cu 3 pha

Chnh lu cu ba pha

D1 D3 D5

D2

R

D4 D6

L


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1.2. Cc b bin i cng sut

Hnh 2.3 S chnh lu cu 1 pha c iu khin

Chnh lu iu khin s dng cc van l cc Tiristo- Cho php thc hin

Cc yu cu k thut

Ca h T mt chiuVi t ng ha cao

id

d

Ld

Ed

T1

T4

T2

T3

~ et


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1.2. Cc b bin i cng sut Chnh lu bn iu khin (s dng van l hn hp diode

v tiristo)

Rd

Ld

Ed

T1

4

T3

6

T5

2

0

a

b

c

Hnh 2.4 Chnh lu cu 3 pha bn iu khin


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1.2. Cc b bin i cng sut Nghch lu ph thuc

- Trong T mt chiung c c lc tr thnh 1

my pht. Nng lngpht ra ny phi c trv li in xoay chiu. tha mn yu cu ny

bbooj chnh lu chuynsang lm vic ch nghch lu.

Ld

EdUd+

-+

-

i i

~ el

Hnh 2.5S nghch lu ph thuc


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1.2. Cc b bin i cng sut Cc b chnh lu o chiu

- Dng cho ng c mtchiu cn quay c 2 chiu

vi ch lm vic c 4gc iu chnh

- S hnh 2.6 a dngphng php o chiu bng

o du in p t vo phnng ng c nh 2 mchchnh lu

~ ~

Kt

Hnh 2.6-a)


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1.2. Cc b bin i cng sut- S hnh 2.6-b dng

phng php o chiukch t

Kt

Hnh 2.6-b)


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1.2. Cc b bin i cng sut- S hnh 2.6-c

o chiu phnng ng c

bng Contactothun (T) vngc (N)

~~

Kt

T N N

Hnh 2.6-c)


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1.2. Cc b bin i cng sut- S hnh 2.6-d o

chiu kch t bngContacto T v N

T NN

Kt

~ ~

Hnh 2.6-d)


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1.2. Cc b bin i cng sut Cc b iu chnh in

p xoay chiu

- Cc b AXC s dng

loi van chuyn dngTRIAC hoc tngng vi n l 2 Tiristou song song ngc m bo cho php dndng c 2 chiu

U~

T1

T2

R

L

i

Hnh 2.7S d AXC mt pha


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1.2. Cc b bin i cng sut- iu chnh in p xoay chiu 3 pha

T1 T3 T

T4 T T2

A B C

ZA ZB ZC

Hnh 2.7S b AXC3 pha


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1.2. Cc b bin i cng sut- iu chnh in p mt

chiu c o chiu

Khi cn cho ng c 1

chiu o c chiuquay ngi ta dng s cu cho mch iup mt chiu

Ed

T1 T2 D2

T4 T3 D3

D1

D4

+

-

EN

Hnh 2.8 S b iu chnh in p mt chiu c o chiu


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PHN 2. C S L THUYT V H IU KHINS NG C MT CHIU

2.1. M hnh ha ng c mt chiu M hnh tng ng phn

ng

- Trong : l t thng do nam chmvnh cu gy ra. n l tc ca ng c

Ua

Ia

Ra

La

Eg A

a a a a g

diu R i L edt!

g ve k! n


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2.1. M hnh ha ng c mt chiu- M men in t:

Td = Kt ia

Phng trnh ca ng c

+ Vi B l h s ma st.

T l m men ti.

d L

dT J B T

d t

[[!


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2.1. M hnh ha ng c mt chiu- ch xc lp ta c:

- Ta c tc ng c ch xc lp:

a a a gu i e!

2d L t aT nB T K T! ! *

a a a

v

U In

K

!

*


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2.2. Phng php iu khin tc ng c i vi loi ng c kch t c lp dng nam chm vnh cu,

thay i tc , ta thay i in p cung cp cho roto. Vic cp p 1chiu thay i thng kh khn, do vy ngi ta dng phng phpiu xung (PWM):

Variable Duty Cycle

Fixed Puried

Hnh 2.1 iu chnh rng xung PWM


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2.2. Phng php iu khin tc ng c- Phng php iu xung s gi tn s khng i, thay i chu k

nhim v (Duty cycle) thay i in p trung bnh t ln ng c.

in p trung bnh:

- Do c tnh cm khng ca ng c, dng qua ng c l dng lin tc, gnsng nh sau:

o n

d k i n

TV VT!

Hnh 2.2 Dng sng dng v p trn ng c


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2.3. Kho st hm truyn Bin i laplace cc cng thc ta c:

( ) ( ) ( ) ( )a a a a a g

p R I p pL I p E p!

( ) ( )g v E p k n p! *

( ) ( )d t aT p K I p! *

( ) 2 ( ) 2 ( ) ( )d L

T p pJn p Bn p T pT T!


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2.3. Kho st hm truyn T ta tnh c:

- Trong : a=La/Ra l hng s thi gian ca mch phn ng.

m=J/B l hng s thi gian c.

( ) ( )( )

2 ( 1)

d L

m

T p T pn p

B p pT X

!

( ) ( )( )

( 1)a g

a

a a

U p pI p

pX

!


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2.3. Kho st hm truyn Vy ta c m hnh h thng nh sau:

Hnh 3.1M hnh h iu khin s ng c mt chiu


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2.3. Kho st hm truyn Khi m men ti bng 0 ta c:

- Vy hm truyn ca ng c lc ny c dng khu daong.

1( ) ( ) 2

( 1)a

aa v

t

n p p BRp K

K

T

X

! *

*


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2.4. n nh ng c dng thut ton PID Thut ton PID

Hnh 3.2 M hnh thut ton PID


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2.4. n nh ng c dng thut ton PID Ta c:

Trong : - Kp l h s khu t l(khu khuch tn)

- Ki l h s khu tch phn

- Kd l h s khu vi phn

( )( ) p i d

d eG K K e d K d

X

X X

X!


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2.4. n nh ng c dng thut ton PID Lut iu khin PID

- Da vo bng trn ta thy rng lut t l (P) c c im tc ng nhanhnhng khng trit tiu c sai lch, ng thi lm vt l ca h thng tng.Khu tch phn cho php trit tiu sai lch nhng tc ng chm. Khu viphn phn ng vi tc bin thin ca sai lch. Ta cn xc nh cc thngs Kp, Ki, Kd c h thng c cht lng mong mun

p ng cah thng

Thigian tng

Vt Thi gian nnh

Sai lch so vitrng thi bn

Kp Gim Tng t thay i GimKi Gim Tng Tng Trit tiu

Kd t thay i Gim Gim t thay i

Bng3.1 Lut iu khin PID


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2.4. n nh ng c dng thut ton PID Thut ton ca b iu khin PID s

- Khu t l P (Proportional):

- Khu tch phn I (Integrate):

Trong T l chu k ly mu vn tc. Cng thc tch phn gn ng theothut ton xp x hnh ch nht ti

( )p pG z K!

11( ) 1I IG z K T

z !

00

( ) ( )

KT k

n

e t dt Te nT!

! Vi


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2.4. n nh ng c dng thut ton PIDKhu vi phn D (Derivative):

Vi thnh phn vi phn c tnh xp x bi:

11( ) (1 )D D d

zG z K K z

Tz

! !

( ) ( ) (( 1) )de t e nT e n T

dt T

!


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2.4. n nh ng c dng thut ton PID Ta c hm truyn PID ri rc

Suy ra:

11

( ) 1(1 )

( ) 1dk

p i d

zG K K K z

E z z

! !

1 1 1 2( )(1 ) ( )( (1 ) (1 )dk p i d

z z E z K z K K z !

1 1 1 2( ) ( 2 )k k p k k i k d k k ku u K e e Ke K e e e !


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2.4. n nh ng c dng thut ton PID Phng php hiu chnh thng s b PID Ziegler-Nichols

- Ta s dng phng php chn tham s PID cho m hnh qun tnhbc nht c tr ca Ziegler Nichols. Tuy khng hon ton chnh xcnhng c th cho p ng tng i tt.

- Phng php ny i hi phi tnh c gi tr gii hn ca cakhu t l Kgh v chu k gii hn ca h kn Tgh. Sau tm cc thngs khc theo bng sau.

B iu khin K P TI TD

P 0.5 Kgh - -

PI 0.45 K gh 0.83 Tgh -

PID 0.6 K gh 0.5 Tgh 0.125 Tgh

Bng3.2 Cc gi tr thng dng ca cc h s KPTITD


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Phn 3. H iu khin Mentor II ca hng Technicque3.1. Khi qut chung v Mentor II

- Mentor II l b iu khin ngc 1 chiu k thut s vnnng,c s dng rng di

cho hu ht cc ng dng iukhin ng c 1 chiu,cngsut thit k t 7,5 kw cho n750 kw ; in p t 208 n660V


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Cc u im ni bt- iu khin tc chnh xc n 0,1% ,p ng

nhanh,mmen n nh.

- Ci t cc tham s d dng nh cu trc menu tham s vphn mm ci t Mentorsoft.- Cc u vo ra tng t v s u c kh ng lp trnh linh

hot.- C sn cng truyn thng RS485.

- M rng tnh nng d dng bng cch cm thm b ngvi x l MD29.

Phn 3. H iu khin Mentor II ca hng Technicque3.1. Khi qut chung v Mentor II


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Phn 3. H iu khin Mentor II ca hng Technicque3.2. Cc c tnh k thut

Cng sut / nng xut- Mentor II Digital DC drives: 7,5 - 1000kW- Cc module h tr cho cc fielbus:

CT Net; Profibus DP; CanBus; Device-Net,...- Cc module ng dng: MD29, MD29AN,... Cc ch tiu kinh t - k thut khc

*Tnh nng c bn:- iu khin gc 1/4 hay 4/4

- Phn hi p/ Tacho/E

ncoder- Sai lch 0,1% tc khi ti t bin 100%


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Phn 3. H iu khin Mentor II ca hng Technicque3.2. Cc c tnh k thut

- Bo v mt phn hi, mt kch t, mt pha,...- Bo v qu ti ng c- Giao tip ni tip - RS232/485

*D dng m rng:- Module MD29 thay th PLC v cc mch vng iuchnh PID,...- Giao tip CT-Net tc cao.

- B iu khin kch t FXM5


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Phn 3. H iu khin Mentor II ca hng Technicque3.3. ng dng

Mentor II c dng trong cc cng ngh :

My n nha,cao su

My bc dy cp in

My to cunMy li tm ng

Dy chuyn cn thp

iu khin my ct,my CNC


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Phn 4. Tm hiu v Mentor II - M210R4.2. Thng s k thut

Di cng sut

Kiu Cng sut(1)

ng c @400DC

Dng in lin tccc i(A)iu

khingc 1/4

iukhingc 4/4 KW HP Aac Adc

M25

M45

M75

M105

M155

M210

M350

M25R

M45R

M75R

M105R

M155R

M210R

M350R

7.5

15

30

37.5

56

75

125

10

20

40

50

75

100

168

21

38

60

68

130

175

292

25

45

75

105

155

210

350


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Phn 4. Tm hiu v Mentor II - M210R4.2. Thng s k thut

M350

M420

M550M700

M820

M900

M1200

M1850

M350R

M420R

M550RM700R

M820R

M900R

M1200R

M1850R

122

150

200250

300

340

450

750

168

200

268335

402

456

803

1105

292

360

480585

690

750

1000

1540

360

420

550700

826

900

1200

1850

Di cng sut


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Phn 4. Tm hiu v Mentor II - M210R4.3. S u


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Phn 4. Tm hiu v Mentor II - M210R4.3. S u


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Phn 4. Tm hiu v Mentor II - M210R4.4. Cc thng s lp t

Kiu Cu ch nn dng Kch thc cpcho u vo ACv u DC

Kiulmmt

Dngkchtcci(A)

iukhingc1/4

iukhingc4/4

HRCACin(A)

Cu ch bndn

AC in(A) DC out(A) (5) Mm2

(3) AWG(4)

M25

M45

M75

M105

M155

M210

M25R

M45R

M75R

M105R

M155R

M210R

32

50

100

100

160

200

35

80

100

125

175

250

40(5)

70 (5)

125 (5)

175(5)

250(5)

300(5)

4mm2

6mm2

25mm2

35mm2

50mm2

95mm2

10

6

2

1/0

3/0

300MCM

i lu

i lu

i lu

Qut

Qut

Qut

8(7)

8(7)

8(7)

8(7)

8(7)

8(7)


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Phn 4. Tm hiu v Mentor II - M210R4.4. Cc thng s lp t

M350

M420

M550

M700

M825

M900

M1200M1850

M350R

M420R

M550R

M700R

M825R

M900R

M1200RM1850R

355

450

560

630

800

100

12502000

400

500

700

900

1000

1200

2x7002x1200

550 (5)

700 (5)

900 (5)

1000(5)

1200(5)

2x700(5)

2x900(5)2x1000(5)

150mm2

185mm2

300mm2

2x185mm2

2x240mm2

2x240mm2

3x400mm23x400mm2

6)

(6)

(6)

(6)

(6)

(6)

(6)(6)

Qut

Qut

Qut

Qut

Qut

Qut

QutQut

10(7)

10(7)

10(7)

10(7)

10(7)

10(7)

10(7)10(7)


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Phn 4. Tm hiu v Mentor II - M210R4.5. Ci t

Giao din ca Mentor II


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Ci t c thc hin thng qua bn phm

iu chnh cc tham s, bn phm c nmphm. S dng cc phm sang tri hoc sang phi la chn trong Menu (nhm chc nng cacc tham s). S trnh n xut hin bn tri cadu chm thp phn trong ca s ch s. Xemhnh giao din.


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Nhn phm MODE mt ln na thot khi ch iu chnh.

Lu gi tr ca tham s sau khi thay i, nu khng

cc gi tr mi s b mt khi thit b iu khin bngt ngun. lu tr, t Parameter 00 = 1 v nhnReset.

Nu ci t bng b iu chnh t xa th tin hnhtng t


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Phn 4. Tm hiu v Mentor II - M210R4.6. Modul m rng

S cc khi


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Cc cng I/O


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Kt ni MD29 s dng RS485 comms v cung cp kh nng vo/rat xa

5 tn hiu analog u vo 3 tn hiu analog u ra

8 tn hiu digital u vo 8 tn hiu digital u ra Tn hiu Digital I/O m rng ti 32 u vo v 32 u ra M rng ln ti 15 cng I/O c th iu khin trn mt mi lin kt

truyn thng tun t 100 metres (330 feet) di ti a di ng truyn giao tip

b iu khin cho ng c DC (FXM5) in p phn ng phn hi t 220 V ti 600 V DC Dng in phn cm ti 20 A 1 pha u vo iu khin mt na hoc hon ton u ra ca thyristor


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Phn 4. Tm hiu v Mentor II - M210R4.7. ng dng

iu khin cun- c thit k iukhin lc cng khngi trong cc ngdng cun v x cunch yu s dng trongnghnh giy, giyng, mng mng

- Hay trong cc nghnh

kim loi,momen cab iu khin s lintc c iu chnh b vo s thay ing knh, qun tnhca li v thit b.


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Chuyn Truyn ng in

NHM 2 XIN CHN THNH CM NSQUAN TM THEO DI CA THY

GIO V CC BN

Chc cc bn hc tp tt!


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Ha Noi ngay 30/09/2010

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