Hloov peb-theem 3 kW lub cev muaj zog rau hauv lub tshuab hluav taws xob
Cov txheej txheem ntawm kev tsim hluav taws xob los ntawm peb-theem lub cev muaj zog tuaj yeem siv lub tshuab hluav taws xob siv hluav taws xob los ua lub zog tsav peb-theem lub cev muaj zog los tsim hluav taws xob hauv thaj chaw deb lossis lub sijhawm tshwj xeeb. Nyob rau hauv peb-theem winding ntawm peb-theem asynchronous lub cev muaj zog (tom qab no hu ua lub cev muaj zog), tom qab txhua theem yog nruab nrog tsim nyog excitation capacitor, nws yog hloov mus rau nws tus kheej excited generator. Cov txheej txheem tshwj xeeb raug qhia raws li hauv qab no rau kev siv.
1 、 Ua kev npaj ua ntej kev hloov pauv
Ua ntej ntawm tag nrho cov, lub peev xwm ntawm lub cev muaj zog yuav tsum raug xaiv kom tau raws li lub zog xav tau ntawm cov neeg siv. Qhov siab tshaj plaws kev siv hluav taws xob tuaj yeem kwv yees li 0.7 npaug ntawm lub zog nominal ntawm lub cev muaj zog siv rau kev tsim hluav taws xob.
Ua ntej kev hloov kho, peb-theem winding ntawm lub cev muaj zog yuav tsum tsuas yog sim, tsom rau theem rau theem thiab hauv av rwb thaiv tsev lub zog ntawm lub cev muaj zog. Lub cev muaj zog nrog kev tsim nyog rwb thaiv tsev tiv taus qhov ntsuas hluav taws xob thiab kev ntsuas cua DC tuaj yeem hloov mus rau lub tshuab hluav taws xob.
Tsis tas li ntawd, lub tshuab ua haujlwm ntawm lub cev muaj zog yuav tsum tsis tu ncua. Yog hais tias lub rotor tig hloov tau yooj yim, cov kabmob yuav tsum tsis txhob xoob lossis tawg Qhov kawg npog tiav thiab lub hauv paus kev teeb tsa ruaj khov.
2 、 Txoj kev sib txuas ntawm lub cev muaj zog siv rau kev tsim hluav taws xob
Lub cev muaj zog hloov mus rau lub zog tsim hluav taws xob feem ntau siv txoj kev sib txuas hnub qub, thiab peb-theem load imbalance pom nyob rau hauv lub sij hawm, thiaj li yuav txo tau cov xwm txheej tshwm sim los ntawm lub hnub qub point hloov chaw.
Cov duab hauv qab no yog daim duab xaim xaim ntawm kev hloov pauv 10kW asynchronous lub cev muaj zog rau hauv lub tshuab hluav taws xob.
Capacitor configuration thiab kev sib txuas txoj kev hloov peb-theem asynchronous lub cev muaj zog rau hauv lub tshuab hluav taws xob
Thaum lub induction lub cev muaj zog ua haujlwm raws li lub tshuab hluav taws xob induction, tsis tas yuav hloov pauv rau sab hauv ntawm lub cev muaj zog, tsuas yog ntxiv lub capacitor rau sab nraud ntawm lub cev, thiab kev hloov kho yog yooj yim heev. Ua kom lub induction generator tsim alternating tam sim no nrog zaus ntawm 50Hz, lub rotor yuav tsum tau dragged rau synchronous ceev. Sib txawv ntawm lub tshuab hluav taws xob synchronous, cov khoom siv tam sim no ntawm induction generator nce thiab nws qhov hluav taws xob davhlau ya nyob twg txo qis heev. Thaum peb-theem luv luv Circuit Court tshwm sim nyob rau hauv cov zis, lub davhlau ya nyob twg voltage ploj sai sai thiab lub luv luv tam sim no poob mus rau xoom. Yog li ntawd, induction generator tsis xav tau kev tiv thaiv luv luv. Nws raug nquahu kom hloov lub cav peb lub kaum sab xis rau kev sib txuas hnub qub, kom cov kab nruab nrab (zeroline) tuaj yeem coj tawm ntawm qhov nruab nrab. Yuav kom txuag tau lub peev xwm, lub capacitor yuav tsum tau txais kev sib txuas ntawm daim duab peb sab kom deb li deb tau, Txuas mus rau qhov sib npaug rau peb-theem txuas ntawm lub cev muaj zog, lub capacitor tuaj yeem txais 450V AC tsis-polar capacitor.
Capacitance ib theem yuav tsum tsis muaj-load excitation C
C = lub cev muaj zog tsis muaj load tam sim no x 1000000 / 2x 1.73x3 Rated voltage ntawm lub cev muaj zog (UX theem / kab)
Thaum lub load yog loaded rau tag nrho cov load nrog ntshiab kuj, lub capacitance ntawm txhua theem yuav tsum tau nce los ntawm 25% C. thaum muaj inductive load nyob rau hauv lub load, lub capacitance ntawm tag nrho cov load yuav tsum tau nce nyob rau hauv lub hauv paus ntawm no.
Empirical capacitance tus nqi ntawm 5.5kW lub cev muaj zog rau lub tshuab hluav taws xob (delta kev sib txuas ntawm lub txhab nyiaj capacitor): capacitance ntawm txhua theem yog 25-35uf, thiab tag nrho cov peev txheej yog 75-105uf
Feem ntau, txhua theem tuaj yeem nruab nrog 220V qhov muag teev, txog 1.8kw. Cov zis voltage ntawm induction generator sib txawv heev nrog lub load. Nws raug nquahu kom tsis txhob siv cov khoom siv hluav taws xob kim los tiv thaiv kev puas tsuaj
Thaum lub load hloov pauv zoo heev, qhov voltage yuav tsum tau hloov kho: ua ntej, hloov tus nqi ntawm lub tshuab hluav taws xob excitation capacitance, uas yog, faib cov capacitance rau ob peb pawg thiab hloov nrog kev hloov ntawm load. Qhov thib ob, kho tus thawj txav ceev kom zoo- Feem ntau, qhov voltage yog roughly kho los ntawm kev hloov lub capacitance thiab finely kho los ntawm kev hloov ceev.
Hloov peb-theem 3 kW lub cev muaj zog rau hauv lub tshuab hluav taws xob
1. Cov ntsiab lus tseem ceeb ntawm kev tsim hluav taws xob
Lub zog ntawm lub cav diesel lossis dej turbine rau prime mover rau kev tsim hluav taws xob yuav tsum yog 10 ~ 15% ntau dua li lub zog ntawm lub cev muaj zog, thiab lub tshuab hluav taws xob yuav tsum ncav cuag qhov nominal ceev tom qab dhau los ntawm cov khoom sib kis. Co yog hais txog ib pawg ntawm lub ntsiab excitation capacitors, thiab hloov DKO (380V, 60a) yog siv los tswj lub zog xa hluav taws xob thiab hluav taws xob tawm ntawm kab; C2 yog hais txog ob peb pawg ntawm pab pawg capacitors, uas txuas nrog hauv lub hnub qub hom, thiab tom qab ntawd kho cov nqi hluav taws xob raws li qhov hloov pauv ntawm kev thauj khoom. Qhov hloov DK2 (380V, 60a) yog siv los tswj lub zog xa hluav taws xob thiab lub zog tsis ua haujlwm ntawm cov kab. Rd yog hais txog qhov tawg fuse, uas yog siv los tiv thaiv lub prime mover los ntawm ya los yog qhov voltage nce tshwm sim los ntawm dheev tshee tawm lub load los ntawm tawg lub generator rwb thaiv tsev; V yog lub voltmeter (1t1-v-450) thiab a yog ammeter (1t1-a-30). Lawv yog siv los saib xyuas peb-theem load voltage thiab tam sim no. Yog tias peb-theem voltage thiab tam sim no tuaj yeem sib npaug nrog qhov yuam kev tsawg dua 5%, tsuas yog siv ib lub voltmeter thiab ammeter.
Yog hais tias qhov ceev ntawm prime mover tsis ruaj tsis khov, nruab ib lub ntsuas zaus (1d1-h2-45 ~ 55) los saib xyuas seb qhov zaus yog li cas.
Lub rooj faib khoom yog ua los ntawm 30mm tuab ntoo. Qhov yuav tsum tau khawb rau saum npoo ntawm lub rooj tsavxwm thiab qhwv nrog 0.5mm tuab galvanized hlau ntawv los tiv thaiv kev sib tsoo los ntawm xoob xaim thiab ignition. Nruab qhov ntsuas ntawm sab sauv ntawm lub hwj huam faib vaj huam sib luag Nruab hloov thiab ntsia hlau fuse (RL1-60) hauv nruab nrab. Lub capacitor yog muab tso rau hauv qis qis ntawm pawg thawj coj faib khoom.
Muaj peb txoj hauv kev los hloov peb-theem asynchronous lub cev muaj zog rau hauv ib-theem asynchronous lub cev muaj zog:
Rated tam sim no: kab tam sim no thiab ntsuas voltage ntawm stator winding nyob rau hauv rated ua hauj lwm lub xeev ntawm lub cev muaj zog thiab ntsuas fais fab tso zis: kab voltage ntawm stator winding nyob rau hauv rated ua hauj lwm lub xeev ntawm lub cev muaj zog.
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CANOpen FieldBusPlug 0.5m 1SAJ230100R1005 COP21-FBP.050 1SAJ230100R1005 - ABB ABB/
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Tuam Tshoj Pcs 12
Khởi động mềm (In-Line connected) 1SFA897101R7000 PSE18-600-70 Ue 208.. .600 VAC, Us, 100-250 V AC, 50/60 Hz, 18A ' - ABB ABB/
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Khởi động mềm (In-Line connected) 1SFA898108R7000 PSTX85-600-70 Ue, 208-600 V, Us, 100-250 V AC, 50/60 Hz, 72A'- ABB ABB/
EU Pcs 1
Khởi động mềm (In-Line connected) 1SFA898112R7000 PSTX210-600-70 Ue: 208-690 V, Us: 100-250 V AC, 50/60 Hz, 171A - ABB ABB/
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Cáp USB (Service engineer tool) 1SFA897201R1001 PSECA -1SFA897201R1001 - ABB ABB/
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Đầu kết nối FieldBusPlug 1SFA896312R1002 PS-FBPA 1SFA896312R1002 - ABB ABB/
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DeviceNet FieldBusPlug 0.5m 1SAJ230000R1005 DNP21-FBP.050 1SAJ230000R1005 - ABB ABB/
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Modbus-RTU FieldBusPlug 0.5m 1SAJ250000R1005 MRP21-FBP.050 1SAJ250000R1005 - ABB ABB/
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CANOpen FieldBusPlug 0.5m 1SAJ230100R1005 COP21-FBP.050 1SAJ230100R1005 - ABB ABB/
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DeviceNet AB -DEVICENET -1 AB -DEVICENET -1 - ABB ABB/
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Modbus/TCP (1-port) AB-MODBUS- TCP-1 AB-MODBUS- TCP-1 - ABB ABB/Sweden Pcs 2
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Hloov peb-theem 3 kW lub cev muaj zog rau hauv lub tshuab hluav taws xob
Cov kab hluav taws xob loj loj yuav tsum tau siv rau kev tsim hluav taws xob thiab kev sib kis, nrog kev txuag hluav taws xob zoo kawg nkaus, thiab kev nqis peev ntau tuaj yeem rov qab los sai sai. Raws li cov kab yog nyob rau hauv lub teeb load ua hauj lwm rau ib tug ntev lub sij hawm, cov kev pab cuam lub neej ntawm cov kab yuav ntev heev. Tuam Tshoj tau teev tseg tias tam sim no qhov ceev ntawm txoj kab nrog "cov sijhawm ua haujlwm txhua xyoo" ntawm 5000 teev / xyoo yuav tsum yog kuv = 0 95A / mm2.
2. Cov khoom siv hluav taws xob tseem ceeb muaj cov khoom siv hluav taws xob
Nyob rau hauv daim duab, lub teeb L sawv cev rau lub teeb pom kev zoo thiab M sawv cev rau inductive load ntawm lub cev muaj zog. C2m yog lub reactive capacitor uas cais lub cev muaj zog.
3. Kev xaiv thiab kev sib txuas ntawm excitation capacitor
Thaum lub cev muaj zog hloov mus rau hauv lub tshuab hluav taws xob, nws yog ib qho tseem ceeb heev kom raug xaiv, txuas thiab siv cov excitation capacitors CO thiab C2.
Lub nominal withstand voltage ntawm lub capacitor yuav tsum ntau tshaj 5 ~ I0% ntawm cov zis voltage ntawm lub cev muaj zog. Lub capacitor nrog lub hnub qub txuas yuav tsum yog 250V withstand voltage; Lub capacitor nrog daim duab peb sab txuas yuav tsum yog 400V withstand voltage.
Lub excitation capacitor ntawm lub tshuab hluav taws xob yuav tsum tsis yog-polar AC capacitor (xws li roj immersed capacitor), thiab txhua yam electrolytic capacitor yuav tsum tsis txhob siv. Muaj ob hom kev lag luam muaj roj immersed capacitors: YY hom thiab YL hom. YL hom capacitor muaj qhov ntim me me thiab ua haujlwm ntev. Thaum siv, peb lub capacitors yog siv los ua lub ntsiab excitation capacitance ntawm txhua theem, thaum ob peb lub capacitors nrog lub peev xwm me me tau txuas nrog rau qhov sib npaug li cov khoom siv capacitors, uas tau nce qib ntawm cov kauj ruam thiab hloov. Ua kom tau raws li qhov yuav tsum tau ua ntawm cov khoom sib txawv.
Tus nqi capacitance ntawm lub cev muaj zog feem ntau cuam tshuam nrog lub cev muaj zog. Lub zog siv ntau dua, lub cev muaj zog thiab lub peev xwm capacitor ntau dua. Nyob rau hauv kev xyaum, kom tsis txhob complex xam Thaum cov kev xav tau tsis siab thiab lub load tsis loj, nws yuav txiav txim tau los ntawm kev xa mus rau cov lus hauv qab no.
Lub reactive zog them capacitor yog sawv cev los ntawm c2m thiab yog hnub qub txuas. Lub teeb thiab lub cev muaj zog ntawm lub zog noj ib feem sawv cev rau qhov hnyav thiab inductive load feem. Thaum lub zog hluav taws xob muab lub zog rau inductive loads, nws siv tsis tau tsuas yog lub zog nquag, tab sis kuj muaj zog reactive. Txoj kev daws teeb meem yog shunt capacitors ntawm ob qhov kawg ntawm qhov load thiab siv lub zog reactive reactive los offset inductive reactive zog. Qhov no yuav tsis tsuas yog txo cov hluav taws xob reactive poob, ua kom cov zis tawm los ntawm 20 ~ 24%, tab sis kuj nce lub network muab hluav taws xob los ntawm 3 ~ 5%. Tus nqi capacitance c2m raug xaiv raws li 7.5% rau txhua IKW ntawm lub cev muaj zog raws li kev siv 8UF yog qhov tsim nyog.
Hloov peb-theem 3 kW lub cev muaj zog rau hauv lub tshuab hluav taws xob
3, Generator ua haujlwm
Txhawm rau tsim hluav taws xob los ntawm lub cev muaj zog, pib lub tshuab raws li cov kauj ruam hauv qab no:
1. Qhib qhov hloov dk0 thiab nkag mus rau lub ntsiab excitation capacitor Co.
2. Tig lub hloov DK2, nkag ib feem ntawm lub auxiliary capacitor C2, thiab tom qab ntawd kaw qhov hloov DK kom tig rau cov kab hluav taws xob.
3. Pib lub prime mover thiab coj tsis tau-load voltage yuav tsim tau tom qab 15 vib nas this.
4. Thaum tsav tsheb thauj khoom, lub hauv paus ntsiab lus ntawm kev thauj khoom loj ua ntej, tom qab ntawd cov khoom me me, lub zog ua ntej thiab lub teeb pom kev zoo tom qab yuav tsum tau ua tiav Lub cev muaj zog hauv qab 4kw hauv hluav taws xob hluav taws xob tuaj yeem pib ncaj qha, 5 5kW ~ 7. 5kW lub cev muaj zog tuaj yeem pib los ntawm kev nqis tes ua. Pib hnub dig muag yuav ua rau muaj xwm txheej loj thiab kev khuv xim.
Cov hauv paus ntsiab lus hauv qab no yuav tsum ua raws li thaum lub tshuab hluav taws xob raug kaw:
1. Ua ntej disconnect lub hwj chim hloov DK2 ntawm lub auxiliary capacitor C2 los tiv thaiv overvoltage los ntawm puas lub rwb thaiv tsev ntawm lub tshuab hluav taws xob. Tom qab ntawd disconnect lub load hloov (xws li DK2 thiab DKI) thiab cuam tshuam lub zog ntawm lub cev muaj zog thiab teeb pom kev zoo.
2. Nres lub tshuab tom qab tag nrho cov auxiliary capacitors thiab loads ntawm txoj kab raug txiav.
3. Tom qab lub prime mover nres khiav, thaum kawg disconnect tus hloov dk0 ntawm lub ntsiab excitation capacitor Co.
Hloov peb-theem 3 kW lub cev muaj zog rau hauv lub tshuab hluav taws xob
Thaum lub sijhawm ua haujlwm ntawm lub tshuab hluav taws xob, xyuam xim rau cov teeb meem hauv qab no:
1. Ua tib zoo saib xyuas peb-theem voltage thiab tam sim no ntawm lub tshuab hluav taws xob, thiab khaws qhov sib npaug hauv paus, thiab qhov yuam kev yuav tsum tsis pub tshaj 5%. Peb-theem tam sim no tso zis tus nqi yuav tsum tsis txhob tshaj qhov ntsuas tam sim no tus nqi ntawm lub tshuab hluav taws xob rau lub sijhawm ntev, txwv tsis pub qhov kub ntawm lub tshuab hluav taws xob nce siab dhau lawm, uas yuav cuam tshuam rau kev pabcuam lub neej ntawm winding.
2. Feem ntau, kev ua haujlwm kub ntawm capacitor yuav tsum tsis pub tshaj 60 ℃; Kev ua haujlwm tam sim no thiab ua haujlwm voltage yuav tsum tsis pub tshaj 1.1 npaug ntawm tus nqi ntsuas rau lub sijhawm ntev los tiv thaiv kev laus ntxov ntxov thiab kev tawg ntawm cov roj insulating.
Tiv thaiv lub tshuab hluav taws xob los ntawm kev tsim hluav taws xob ntau dhau yog qhov tsim nyog rau kev ua haujlwm nyab xeeb. Ua li no:
1. Qhov ceev ntawm prime mover yuav tsum maj mam mus txog qhov ntsuas ceev ntawm lub tshuab hluav taws xob los ntawm qeeb mus rau ceev hauv 15 vib nas this. Qhov ceev ntawm prime mover yuav tsum tsis tu ncua thiab kev kho yuav hloov tau. Tsis txhob maj mam nce qhov ceev tom qab deceleration kom qhov voltage nce ceev heev.
2. Tom qab disconnecting lub load hloov, qhov sib txuas auxiliary capacitor hloov yuav tsum tau txiav nyob rau hauv lub sij hawm.
3. Thaum lub load ntawm hluav taws xob Circuit Court hloov los ntawm lub cev muaj zog mus rau lub teeb pom kev zoo, tsis txhob hnov qab disconnect lub reactive hwj chim them capacitor ntawm lub cev muaj zog, txwv tsis pub nws yuav ua rau kom lub excitation tam sim no, nce lub voltage thiab tsim overvoltage.
4. Lub capacitor yuav tsum tsis txhob muaj qhov txawv txav xws li roj to, roj tsis txaus, ignition thiab arcing. Thaum lub capacitor raug txiav tawm ntawm lub hwj huam mov, ib qho hluav taws xob seem tseem nyob ntawm nws lub phaj electrode. Hauv peb-theem AC Circuit Court, nws tuaj yeem ncav cuag li ob npaug ntawm lub network voltage. Yog tias tib neeg lub cev kov nws, qhov tshwm sim yuav loj heev. Yog li ntawd, thaum hloov los yog kho lub capacitor, txhim khu kev qha grounding yuav tsum tau siv los tso lub capacitor rau ntau zaus.
5. Rau cov tshuab hluav taws xob ua haujlwm nyob rau hauv cov cheeb tsam uas muaj hluav taws xob ntau dua, thaum cov kab hluav taws xob siv hluav taws xob ntev ntev (kwv yees li 500m), ob pawg fsi-0.5 low-voltage valve hom ntes yuav tsum tau nruab rau ntawm thawj thiab kawg yees ntawm qhov hluav taws xob ntawm qhov hluav taws xob. generator thiab txhim khu kev qha hauv av, thiab tus nqi hauv av yuav tsum tsawg dua 10N.
6. Yuav kom suav tau, cov keyboards, capacitors thiab motors hauv chav tshuab yuav tsum tau cim kom meej.
Nco ntsoov lub hom phiaj thiab tus lej txhawm rau tiv thaiv kev ua haujlwm tsis raug. Tsim cov txheej txheem ua haujlwm ntawm lub tshuab hluav taws xob sib thooj,
Lub hom phiaj yog txhawm rau xyuas kom muaj kev nyab xeeb ntawm lub tshuab hluav taws xob.
