Post on 12-Jul-2015
Bin tn ALTIVARLa chn mi cho truyn ng in xoay chiu ch m truy chi
Simply Smart!Improving ingenuity and intelligence for ease of use in Automation & Control
TVT.R0.3
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Ni dung
I. II.
Nhu cu iu chnh tc Cu to bin tn
III. Phng thc iu khin bin tn IV. Cc chc nng c bn ca bin tn V. c tnh c VI. Cc chc nng bin tn (tip) VII. Bin tn trong h thng in
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Nhu cu iu chnh tc
I. II.
Nhu cu iu chnh tc Cu to bin tn
III. Phng thc iu khin bin tn IV. Cc chc nng c bn ca bin tn V. c tnh c VI. Cc chc nng bin tn (tip) VII. Bin tn trong h thng in
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Nhu cu iu chnh tc iu khin thang my, c cu nng h
Tc thang 0.25m/s t
3s ACC
3s DEC
Dng nhanh v chnh xc Gim sc v chn ng c kh
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Nhu cu iu chnh tc iu khin qu trnh sn xut
Ph hp qu trnh sn xut Dng nhanh v chnh xc Gim sc v chn ng c kh
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Nhu cu iu chnh tc Tit kim nng lng vi h thng HVAC /bm qut
Tit kim nng lng gim chi ph vn hnh Nng cao cht lng iu khin ton h thng Gim sc v chn ng c kh cho cc h truyn ng6
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Nhu cu iu chnh tc Tit kim nng lng vi h thng HVAC /bm qutTh d: My nn (vi p sut t 80 psi) Tit kim ti 35% in nng Gim hao mn c kh do khi ng nhiu ln
50Hz
50Hz
25Hz 0Hz
25Hz 0Hz
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Bin tn ALTIVAR ALTISTART v ALTIVAR gii php cho mi ng dngCho cc ng dng n gin ATV11: 0.18 ti 2.2 kW ATV31: 0.37 ti 15 kW ATS01: 0.75 ti 75 kW Cho cc ng dng phc tp, cng sut ln ATV58: 0.37 ti 55 kW ATV68: 75 ti 630 kW ATV71: 0.37 ti 500 kW Cho cc ng dng bm/qutNEW NEWDrive Altivar 38 Starter Altistart 48 Drive Altivar 21/61
Drive Altivar 11
Drive Altivar 31
Starter Altistart 01
NEW NEWDrive Altivar 58/58F Drive Altivar 68/68F Drive Altivar 71
ATV38: 0.75 ti 315 kW ATS48: 4 ti 1200 kW ATV21: 0.37 ti 30 kW ATV61: 0.37 ti 630 kW
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Bin tn ALTIVAR ALTISTART v ALTIVAR gii php cho mi ng dng
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Cu to bin tn
I. II.
Nhu cu iu chnh tc Cu to bin tn
III. Phng thc iu khin bin tn IV. Cc chc nng c bn ca bin tn V. c tnh c, lut iu khin VI. Cc chc nng bin tn (tip) VII. Bin tn trong h thng in
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Cu to bin tn
Q1 I> I> I>EMC Filter
AltivarL
Vi x l/iu khin
M ~
Mch chnh lu Mch mt chiu trung gian (DC link) Mch nghch lu Phn iu khin
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Cu to bin tn
Chnh lu
Mch mt chiu Trung gian
Nghch lu
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Cu to bin tn Dng sng in p v dng in u ra bin tn
+ VDC bus513 V
in p ra (PWM)
0VDng in ng c
- VDC bus
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Cu to bin tn Mch hm
40:1PO (+) PA PB
L1 L2 L3
ATV71
980 RPMU V W
M
PC (-) ATV71 lun c sn transitor cho mch hm ti cng sut 160kW ATV71C16N4
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Cu to bin tn Cc u vo/raL1 L2 (L3) SA
Ngun cp
U/T1 V/T2 V/T3 +/PA -/PB
Ti ng c Ti in tr hm
Cc u ra r-le
SC SB COM
Cc u vo tng t
0 20mA 4-20nA
0-10V
AIV +10 AIC +24
ALTIVAR
Cc u vo s
LI1 chy thun LI2 Chy nghch LI3 PS2 LI4 PS3
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Cu to bin tn Cc u vo/raTh d: u ni iu khin cho ATV31
Chn kiu ngun
Cng RJ-45 cho K
Cc u ni cho iu khin
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Cu to bin tn Cc u vo/ra
R le Bo li u vo s F = Chy thun R = Tc t trc RES = reset liVitesse prselect 1,2,3Mod bus
R le Bo t tc
ATV21
u ra tng t Bo tn s ra
u vo tng t VIA tcSortie logique t 0-10V VIB cha gn chc nng
Th d: u ni iu khin cho ATV2117
Phng thc iu khin
I. II.
Nhu cu iu chnh tc Cu to bin tn
III. Phng thc iu khin bin tn IV. Cc chc nng c bn ca bin tn V. c tnh c, lut iu khin VI. Cc chc nng bin tn (tip) VII. Bin tn trong h thng in
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Phng thc iu khin Menu lp trnh ATV31
Ci t Tham s ng c Qun l vo/ra iu khin Menu chc nng Gim st li Truyn thng Hin th
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Phng thc iu khin KNH tham chiu/ iu khiniu khin (Command): L lnh gi ti ALTIVAR Chy thun, o chiu Dng t do, dng theo c tuyn, dng nhanh Tham chiu (Reference): L tn hiu t tc (mmen) cho ALTIVAR t tc 200 vng/pht, 1000 vng/pht KNH (Channel): L ngun tn hiu iu khin v tham chiu Cc KNH tham chiu/iu khin ALTIVAR Mn hin th trn ALTIVAR (LOC hoc HMI) u vo/ra (Terminals) Cng Modbus Cng CANopen
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Phng thc iu khin Knh tham chiu/ iu khin tch bit hoc kt hpKt hp: Tham chiu v iu khin kt hp trong cng mt knh Tch bit: Tham chiu v iu khin tch bit cc knh khc nhauCANopen
CANopen
TERMINALS
-10V +10v
Reference
Digital reference
TERMINALS
Command
Command
Reference
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Phng thc iu khin Knh tham chiu/ iu khin tch bit hoc kt hpChuyn knh vi tham chiu/iu khin kt hpCANopen
Chuyn knh vi tham chiu/iu khin tch bitCANopen
Command word
Digital reference
Digital reference
CANopen Reference
CANopen
TERMINALS
Command
TERMINALS
-10V +10v
-10V +10v
Command
Reference
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Phng thc iu khin Chuyn knh K1.6 : DRIVE MENU command Cmd channel 1 Command channel 1 Cd1 Terminals HMI Modbus CANopen Network Controller
1.6 : DRIVE MENU command Switching cmd
Command channel 2 Cd2 Terminals HMI 1.6 : DRIVE MENU command Cmd channel 2 Modbus CANopen Network Controller
Command switching CCS
Forward Reverse Stop
LI1 LI14 C100 C115 C200 C215 C300 C315 C400 C415
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Phng thc iu khin Chuyn knh Tham chiuReference channel 1 Fr1 or Fr1b 1.6 : DRIVE MENU command ref. channel 1 AI1 AI2 HMI Network Controller Applicative reference Applicative function
Reference channel 2 Fr2 1.6 : DRIVE MENU command ref. channel ref. 2 AI1 AI2 HMI network Controller Direct reference
Reference switch
1.6 : DRIVE command Switching ref. 2
RFC
Speed reference
LI1 LI14 C100 C115 C200 C215 C300 C315 C400 C415
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Phng thc iu khin
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Phng thc iu khin iu khin/tham chiu ti chLocal control (LOC hoc HMI) Cc phm: Stop/reset Run ESC Fwd/Rev F1 F4 Nm xoay
KeypadKeypad c th lp t ngoi mt t iu khin s dng cp RJ-45 (10m) v b g lp.
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Phng thc iu khin iu khin 2-wire hoc 3-wire (2C/3C)Lp trnhChy thun o chiu
Vo menu Chn Lnh Chn:
I-O tCC 2C 3C LOC
Dng Chy thun o chiu
hoc hoc
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Phng thc iu khin iu khin nhiu ng cL1
Tc t
Khng lcL2
L3
Mi ng c phi c r-le nhit bo v Khi cc ng c c cng sut khc nhau, nn dng lut iu khin V/F
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Phng thc iu khin iu khin nhiu ng cLix = CNF1 Liy = CNF2
Config. 1
Config. 2
Rx= CNF1
Ry= CNF2
Rz= CNF3
Config. 3
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Phng thc iu khin iu khin ch/tMaster speed regulator Slave speed regulator Master speed regulation Slave torgue control
f refReference AIx
AI pulse or encoder input Speed Reference AIx Ao
f refTorque Reference
M
encoder
M
M
M
Ch/t theo tc
Ch/t theo mmen
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Phng thc iu khin iu khin mch vng kn
EncoderTc t
+Tc t
PID
Phn hi tc
Hn ch
Tn hiu dng iu khin
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Phng thc iu khin Ni mngPLC SCADA
Controller inside
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Bin tn ATV71 vi card Controller inside ng vai tr nh mt b iu khin kh lp trnh cho php iu khin mt tp ng dng nht nh. Chc nng ng b ha qu trnh sn xut c thc hin mc trn ca mng.
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Cc chc nng c bn
I. II.
Nhu cu iu chnh tc Cu to bin tn
III. Phng thc iu khin bin tn IV. Cc chc nng c bn ca bin tn V. c tnh c, lut iu khin VI. Cc chc nng bin tn (tip) VII. Bin tn trong h thng in
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Cc chc nng c bn iu khin tc ng c: Simply Start1. Ni ATV31 vi ngun L1, L2, L3, N 3. Ni dy mch iu khin
Thc hnh
Tc t Lnh Chy thun
2. Ni ATV31 vi qut U, V, W, N34
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Cc chc nng c bn iu khin tc ng c: Simply Start4. Nhp thng s ng cVo Menu DrCin p: UnS Tn s: FrS Dng ng c: nCr Tc nh mc: NsP H s cng sut: Cos Thc hin auto tuning : autotuning: Tun = Yes
Thc hnh
5. Chn lut iu khinVo menu DrCChn thng s: UfT = P cho ti bm/qut
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Cc chc nng c bn iu khin tc ng c: Simply Start6. t cc thng s cho bin tnVo menu Settings: SEtc tnh bo v nhit ca ALTIVAR
Thc hnh
t bo v nhit (qu ti) cho ng c: t thng s Ith bng dng ng c t thng s khi ng/dng: t thi gian khi ng: ACC t thi gian dng: DEC t hn ch tc trn/di: t hn ch tc di: LSP (Hz) t hn ch tc trn: HSP (Hz) 3s ACC 3s DEC t n
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Cc chc nng c bn iu khin tc ng c: Simply Start7. t cc thng s cho bin tnVo menu qun l I/O: I-OKim tra kiu u dy 2-wire, 3-wire hay LOC:
Thc hnh
Vo sub-menu tCC, chn kiu u 2C Chuyn knh tham chiu v AI1: Vo sub-menu Fr1, chn AI1Kiu u dy 2C
8. Kt thcBt cng tc cho ng c lm vic
Ch : vi ATV21, nu chn ng loi ng ctiu chun, sau khi i dy nh cc bc 1, 2 v 3 c th khi ng bm/qut ngay m khng cn Thm bt c bc ci t thng s no.
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Cc chc nng c bn Lu thng s/ Tr v thng s mc nh/ Bo v truy cpLu thng s va thit lp vo ALTIVAR: Vo menu Motor control: DrCVo sub-menu SCS, chn Str1Lu thng s vo EFROM
Tr v thng s lu hoc thng s mc nh (Factory settings): Vo menu Motor control: DrCVo sub-menu FCS, chn rEC 1 hoc chn InITr v thng s lu trong EFROM Tr v thng s mc nh ca nh sn xut (ALTIVAR)
Bo v ALTIVAR khi truy cp v : Vo menu Hin th: SUPVo sub-menu COd, chn On nhp m bo mt XXXX
Chn mt tp s mong mun
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c tnh c, lut iu khin
I. II.
Nhu cu iu chnh tc Cu to bin tn
III. Phng thc iu khin bin tn IV. Cc chc nng c bn ca bin tn V. c tnh c, lut iu khin VI. Cc chc nng bin tn (tip) VII. Bin tn trong h thng in
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Lut iu khinTc ng c theo tn s: n = 60f (1 - s) p Mmen sinh ra t l vi t thng v dng in:
Lm th no duy tr t thng khng i khi tn s thay i?
T = K..I.cosiu khin mmen: - Duy tr t thng khng i
= L.I U = Z.I = (L).I + R.I U ~= 2fLI (b qua RI) U ~= 2f. = U 2f
= constant
- Mmen t l vi dng in T = f(I)380V
190V
Duy tr t s U/f khng i25Hz 50Hz 87Hz
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Lut iu khinLut iu khin V/F duy tr t thng khng i UnS v FrS nh ngha cc im lm vic ca ng c. UFr l in p a ti ng c ti 0 hz (boost)in p ng c UnS Lu : vng tc thp, khng th b qua thnh phn IR. Do c tnh V/F thng bt u ti Ufr > 0 b li st p do IR gy ra.
UFr
Tn s ra FrS
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Lut iu khinLut iu khin V/F 5 imin p ng c
UnS
U5 U4 U3 U1 U2 UFr F1 F2 F3 F4 F5 FrS
c tnh V/F 5 im (U1:F1 ti U5:F5): cho php dng c tnh V/F thch hp vi c tnh c ca ti. Th d: trnh hin tng cng hng c bit vi cc ng c tc cao.
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Lut iu khiniu khin vc t t thng Nguyn l: chuyn i h phng trnh my in, chuyn cc i lng v hng (in p, dng in, t thng) thnh cc vc t tng ng. Trn h quy chiu vi vc t t thng, thnh lp c h phng trnh:
T thng Mmen
r = K1.Id T = K2.s.Iq
ng c khng ng b
Id, Iq l cc thnh phn dc trc v ngang trc ca vc t dng in.Id
s
Bng cch iu khin ring bit cc thnh phn Id, Iq s gin tip iu khin c t thng v mmen.
T thng Mmen
Iq
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Lut iu khinSo snh iu khin vct t thng v V/FK vct t thng T ng b (Rs v s) T/Tn 200 % T/Tn Lut V/F B thng (t U0 ban u)
100%
1 3
FrS
5
10
FrS
iu khin vct c chnh xc cao hn, c bit tc thp, v p ng ng tt hn so vi iu khin v hng V/F.
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Lut iu khinCc lut iu khin cho bin tn ATV31UnS
L: n: P:P
Ti CT, ng c c bit iu khin vc t t thng mch vng h (CT) Ti VT
L n UFr FrS
f (Hz)
nLd: Tit kim nng lng (Lm vic nh loi P khi khng ti v loi n khi c ti)
Lp trnh:
Chn lnh Chn:
UFt (trong menu DrC-) L hoc P hoc n hoc nLD45
Ti cTi mmen khng i (Constant Torque - CT)- Thng gp trong nhiu ng dng nh bng chuyn, cu trc, thang my... - Chc nng Motor tuning gip bin tn b st p, duy tr mmen trong gii tc thp380V
Mmen TL
Tc c bn
Tc 0
1500 rpm
- Mmen ca ti khng ph thuc vo tc quay TL = constant
190V
tng ng PL = TL = k - Mmen c duy tr theo c tnh V/F tuyn tnh (c b vi Motor tuning). - Trn tc c bn (50Hz), in p c duy tr khng i (t max)
25Hz
50Hz
87Hz
c tnh V/F
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Ti cTi cng sut khng i (Constant Power - CP)- Mmen ca ti t l nghch vi tc quay
tng ng PL = TL = constant - Cc ng dng vi tc ln hn tc c bn (trn 50Hz) - Cc ng dng hay gp: My ca, my ti/qun dy, my ko... Mmen
Tc
Tc c bn 1500 rpm
k TL =
2000 rpm
2500 rpm
3000 rpm
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Ti cTi mmen bin thin (Variable Torque VT)- Cc ti lin quan ti qut/bm ly tm - Mmen ca ti t l vi bnh phng tc quay ca my. TL = k2, tng ng PL = TL = k3 - Ch cn mt mmen nh khi ng Mmen Bin tn cho ng dng VT tit kim nng lng Th d: 1/2 tc (25Hz), bm tiu th mt lng cng sut bng 1/8 cng sut nh mc (50Hz)!
TL Tc
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Ti cTi mmen bin thin (Variable Torque VT)
Ti bm trc vtMmen ti t l vi tc quay TL = k tng ng PL = TL = k2 Mmen
TL 0 Tc
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Ti cTi yu cu mmen qu ti ln
- Ti mmen khng i CT cn mmen khi ng ln lc ban u. - Dng khi ng t ti hn 150% nh mc trong 1 pht. - Nu ng c khng khi ng c, hoc dng khi ng > 150% qu 1 pht, bin tn s trip. Bin tn bo li: OLF (Over current (Torque limit... Mmen 220%
100%
- ATV31, ATV58, ATV68, ATV71 c thit k chuyn dng cho cc ng dng CT
1 pht
t
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Ti cTi yu cu mmen qu ti nh
Ti bm/qut ch cn mmen qu ti nhNEW NEW
Bin tn ATV38, ATV21, ATV61 c thit k chuyn dng cho cc loi ti bm/qut. Dng bin tn ATV71 cho ti bm/qut c th nng cng sut bin tn. Th d: ATV71 200HP (CT) c th vn hnh mt ng c 250HP cho ti bm/qut (VT) Mmen 110% 100%
1 pht
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Cc chc nng bin tn (tip)
I. II.
Nhu cu iu chnh tc Cu to bin tn
III. Phng thc iu khin bin tn IV. Cc chc nng c bn ca bin tn V. c tnh c, lut iu khin VI. Cc chc nng bin tn (tip) VII. Bin tn trong h thng in
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Cc chc nng bin tn (tip)Cc chc nng ca ALTIVAR c qun l trong Menu FUnLit k mt s chc nng thng dngPreset speeds PID regulator Sleep/wake up function Catch on the fly Skip frequencies Fault Inhibition +/- speed Reference switching Command switching DC Injection Adjustment of the mod.frequency Automatic reset and restart Auto-adaptation of the ramp Ramp switching Personalized ramps Switching between motors - tc t trc - chng nng PID - chc nng dng/chy t ng - bt tc ng c - b qua tn s cng hng - qun l, gim st liDng cho bm/qut
- +/- tc - chuyn knh tham chiu - chuyn knh iu khin - hm ngun mt chiu - chn tn s cng hng - t ng reset li v khi ng li - t ng iu chnh c tuyn khi ng/dng - chuyn c tuyn khi ng/dng - ty bin c tuyn khi ng/dng - iu khin nhiu ng c -
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Cc chc nng bin tn (tip)Chc nng ty bin c tuyn tng/gim tc
Thc hnh
S ramp
U ramp
Ty bin
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Cc chc nng bin tn (tip)Chc nng cng tham chiuCh : AI2 chp nhn tn hiu 10V, cho php thc hin php vi tn hiu m.
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Cc chc nng bin tn (tip)Chc nng tc t trcDng cc u vo logic LI cho php t hp ti 16 tc t trc.
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Cc chc nng bin tn (tip)Chc nng tc t trc
Thc hnh
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Cc chc nng bin tn (tip)Chc nng chy JOG
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Cc chc nng bin tn (tip)Chc nng chy JOG
Thc hnh
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Cc chc nng bin tn (tip)Chc nng +/- tc
LI1 LIx LIy
Chy thun Chy nghch + tc Tt cc cng tc - tc Bt nt th nht Duy tr tc Bt nt th hai + tc
Chy thun Chy nghch
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Cc chc nng bin tn (tip)Chc nng +/- tc
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Cc chc nng bin tn (tip)Chc nng +/- tc
Thc hnh
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Cc chc nng bin tn (tip)Chc nng iu khin PI
Tham chiu Fr1 AI Mn hnh Mng Auto/manu PID Regulator Ramp
+ -
Tn hiu iu khin
rPG Khuych i rIG Tch phn rDG o hm
HSP LSP
ACC DEC
Tn hiu phn hi PIF 0-10V 0-4-20mA
Scaling
FbS
Chuyn v tham chiu tc
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Cc chc nng bin tn (tip)Chc nng iu khin PI
Thc hnh
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Cc chc nng bin tn (tip)Chc nng phanh hm trnh t
Chc nng phanh hm trnh tng dng cho ti nng h hoc truyn ng thng. Cho php bin tn iu khin phanh hnh ca ng c ng b vi vic to mmen gi ti khi bt u lm vic v khi dng.
Tn s lm vic lc nh v hm phanhBin tn t ng t theo h s trt ng c.
Thit lp thng s n ginCh cn t dng to mmen ph hp.
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Cc chc nng bin tn (tip)Chc nng phanh hm trnh tFdc high Fdc low Rest on the ground 1 2 Open loop/ Closed loop
2
1
Speed reference
LI1 ascend AI1 0-10V
LI2 descend
LI6 SP4
LI5 SP2
LI4 LI3 Switch config braking contact Open loop>Closed loop R2
Scale
AI2 4-20mA AABB
brake coil Brake
Encoder
M31.5kW
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Cc chc nng bin tn (tip)Chc nng hm trnh t
Mt vi thng s chc nng Tn s lm vic lc nh brL Dng bm to mmen Ibr Thi gian nh phanh brt Tn s lc hm bEn Thi gian phanh b bEtThng s duy nht cn thit lp
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Cc chc nng bin tn (tip)Chc nng phanh hm trnh t
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Cc chc nng bin tn (tip)Chc nng qun l cng tc hnh trnh
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Cc chc nng bin tn (tip)Chc nng t ng khi ng li
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Cc chc nng bin tn (tip)Chc nng catch on the fly
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Cc chc nng bin tn (tip)Tng thch cc ch nng
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Bin tn trong h thng in
I. II.
Nhu cu iu chnh tc Cu to bin tn
III. Phng thc iu khin bin tn IV. Cc chc nng c bn ca bin tn V. c tnh c, lun iu khin VI. Cc chc nng bin tn (tip) VII. Bin tn trong h thng in
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Bin tn trong h thng inSng hi, nhiu in t v nh hng ca chng
Sng hi v nhiu in tBin tn sinh ra sng hi bc cao, nhiu dng truyn dn, v nhiu pht x vo khng gian. Harmonics Electro-magnetic Interference EMI Cc sng hi bc cao v nhiu cao tn xut hin c pha ngun ca bin tn v pha ng c.U
Nguyn nhn l do tc dng ca b chnh lu v b nghch lu vi phng php iu bin rng xung iu p DC thnh AC vi dv/dt ln (PWM). Harmonics: tn s t 150 Hz ti 10 KHz Nhiu cao tn EMI: t 10 KHz ti 1 GHz
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Bin tn trong h thng inSng hi v nh hng ca sng hi
nh hng ca sng hiLm tng dng in (ti 50%), gy qu ti cho ngun, cp, my bin p. Dng in b mo dng, lm gim h s cng sut ca ngun. Tng kh nng gy ra cng hng trong mch c ni t in. Gy nhiu cho cc thit b in khc trong mng.75
Bin tn trong h thng inGii php gim sng hi Cun khng Line choke DC choke B lc LC Lc tch ccCun khng line choke
Dng in thc t ti bin tn:
Irms = 1 + THDI 2H s cng sut thc t u vo: Cos D 1 + THDI 2
B lc LC
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Bin tn trong h thng inGii php gim sng hi Cun khng lm dng in gn hnh sin hn v lm gim sng hi bc cao.Line choke30 25 20 I (A )15.32 25.16 22.88 20.77
Khng dng khng lcLine current spectrum
THDI = 150% Irms = 45A12.36
15 10
6.77
DC choke
5 0 1 3 5 7 9 11 13 15 17
4.51 1.54 1.21
19
21
23
25
Harmonic order
Dng khng lc 3%Line current spectrum
3025.94
25 20 I (A ) 15 10 5 0 1 3 5 7 9 119.38
THDI = 40% Irms = 28A - 60%3.20 1.80 0.87 0.74 0.49 0.35 0.30
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15
17
19
21
23
25
Harmonic order
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Bin tn trong h thng inGii php gim sng hi
ATV11 ATV31
ATV71 ATV71
Built-in inductance 1%ATV71 Irms reduction 30%
Built-in inductance 3%Irms reduction 60% THD gim cng sut v mmen) Mt s tiu chun (vd. IEEE519 US) i hi thit b to ra mc sng hi rt nh C th lm gim mc sng hi mc tng th, hoc lp t cho tng thit b c sinh ra sng hi B lc LC cho php a mc THDI t 16% ti 10%, and c th ti 5% khi dng kt hp vi cun khng Schneider c gii php ny t cng sut 0.75kW ti 500kW
B lc LC79
Bin tn trong h thng inGii php gim nhiu in t Tun th vic u ni, i dy trong ti liu hng dn lp t bin tnRFI Filter
Dng b lc RFI (cn gi l b lc EMC) lm gim nhiu truyn dn v nhiu pht x C nhiu mc lc khc nhau. Vic s dng b lc mc no ty thuc vo yu cu ca tiu chun phi tun theo v vo di cp, kiu cp u Nhiu in t pha cp ng c c th gim thiu bng cch s dng cp bc kim, ni t v tun th vic u ni hng dn trong ti liu
80
40
Bin tn trong h thng inThit b Lc nhiu lm vic nh th no
RFI filter Lc RFI
High frequency tn s current (generated principally by thet in r) Dng in leakage cao (khp mch qua cc stray capacitance)
Dng cp bc kim l bt buc tun th vi tiu chun EMC
81
Bin tn trong h thng inSchneider OfferMi trng 1 Ta nh dn dng Mi trng 2 Cng nghip
C1
ATV11 up to 2.2kW
C3
ATV31 5.5kW to 15kW
Built-in class B ATV31 up to 15kW ATV71 up to 500kW Optional class B filter
Built-in class A gr2 ATV71 5.5kW to 500kW
C2ATV31 and ATV71 up to 4kW Built-in class A gr1
Our drives are minimum C3 even if the drive is more than 400A to comply with industrial practices. Built-in class A Most of the ranges are also available without filters.
82
41
Bin tn trong h thng inQu p trn cc ng c: nguyn nhn v gii phpBt/tt cc IGBTs to ra bin thin in p rt ln (dV/dt)
+ VDC bus512V
in p ra (PWM) dV/dt 2 ti 10kV/S
0VDng in ng c gn hnh sin
- VDC bus
83
Bin tn trong h thng inQu p trn cc ng c: nguyn nhnQu p gy ra do phn x sng dv/dt v do s phi hp tr khng gia ng c v cp ni bin tn ng c ln ca qu p v dv/dt ph thuc vo di cp cng nh k thut PWMQu p dV/dt
l cable
PWM Voltage at Motor Terminals1500
1000
Qu p trn cc ng c Thng ti 2 x V bus DC Vd: U li =400Vac - Ch ng c = 400xSQR2x2 = 1132V - Ch my pht (hm) = 790x2 = 1580V i khi in p c th tng ln ln hn 2 Vdc ...Tim e
+ Vdc500 0 Voltage
- Vdc
-500
-1000
-1500
-2000
84
42
Bin tn trong h thng inQu p trn cc ng c: gii php
Gii php gim qu p Gii hn nh xung ca qu p Gim dv/dt Bin php thc hin Dng bin tn c chc nng gii hn nh xung qu p (< 2VDC) S dng b lc dv/dt (Motor choke)
Motor choke
Dng cc b lc LR hoc LC Dng b lc hnh SIN
85
Bin tn trong h thng inQu p trn cc ng c: gii phpS dng bin tn c chc nng hn ch qu in p trn cc ng c Bin tn ATV71:+ 2Vdc
Chc nng khng c bt Qu p ln hn 2Vdc
Time [s]
+ 2Vdc
SUL chc nng c bt
Time [s]
86
43
Bin tn trong h thng inQu p trn cc ng c: gii phpS dng b lc dv/dt
Motor choke
B lc LC B lc hnh sin
87
Bin tn trong h thng inChiu di cp cho php
Cp
10 m Chc nng hn ch mm Chc nng hn ch mm
50 m
100 m
150 m
300 m
600m
Ti 15kW 480v
Inductance Inductance Sinus
T 18kW 480v
Chc nng hn ch mm Chc nng hn ch mm
Inductance Inductance Sinus
Bc kim Khng bc kim
88
44
Bin tn trong h thng inDng in r (Earth Leakage Current) Bin tn sinh ra dng in r vi 2 ngun chnh: dV/dt ca in p ng c to dng r khp mch qua cc t k sinh xung t. Cc b lc RFI cng to ngun dng r qua cc t ni t ca chng.
U
89
Bin tn trong h thng inng i ca dng in r
Differential breaker
RFI filter
bearings
Dng r tn s thp (to bi cc b lc EMC) Dng r tn s cao (i qua cc t k sinh)
90
45
Bin tn trong h thng inTc hi ca dng in rTc hi nh hng ti cc thit b chng dng r (RCD) Dng r c th gy h hng bi ca ng c
Mt s gii php Khng s dng cc b lc EMC nu khng bt buc c bit vi ngun mt pha gim dng r pha ng c: Dng khng lc gim dv/dt Khng dng cp bc kim nu khng bt buc Gim tn s lm vic ca bin tn Gim chiu di cp ni bin tn ng c ti mc c th91
46