Nyob rau hauv lub xeev kwv yees nyob rau hauv hluav taws xob drives
zawv zawg hom tswj cov qauv tsim thiab kev siv rau cov tsav hluav taws xob .Lub ntsiab lus tseem ceeb, kev ua lej, thiab kev tsim qauv ntawm cov txheej txheem sib txawv thiab cov txheej txheem zawv zawg raws li txoj cai kev ua haujlwm hom raug kho. Lub ntsiab lus sib cav nyob rau hauv kev pom zoo ntawm zawv zawg-hom tswj yog kev txiav txim txo, decoupling tsim txheej txheem, kev cuam tshuam tsis kam, insensitivity rau parameter variations, thiab yooj yim siv los ntawm kev siv fais fab converters. Cov kev tswj algorithms thiab cov ntaub ntawv ua cov ntaub ntawv siv nyob rau hauv cov kev sib txawv qauv systems yog tsom xam. Lub peev xwm ntawm zawv zawg hom tswj txheej txheem yog ua kom pom rau ntau yam ntawm cov hluav taws xob tsav thiab cov hom phiaj ntawm kev tswj xyuas.
High-power thiab / lossis high-voltage hluav taws xob tsav. Multilevel converters: (1) tuaj yeem tsim qhov ze-sinusoidal voltages nrog tsuas yog hloov pauv zaus; (2) yuav luag tsis muaj electromagnetic cuam tshuam los yog hom hom voltage; thiab (3) yog haum rau loj voltamper-rated hluav taws xob drives thiab high voltages. Lub cascade inverter yog lub ntuj haum rau lub tsheb loj tag nrho cov hluav taws xob tsav vim nws siv ntau theem ntawm DC voltage qhov chaw, uas yuav muaj los ntawm cov roj teeb lossis roj hlwb. Lub rov qab-rau-rov qab diode-clamped converter yog qhov zoo tshaj plaws qhov chaw ntawm AC voltage muaj, xws li nyob rau hauv ib tug hybrid electric tsheb. Kev simulation thiab kev sim ua kom pom qhov zoo tshaj ntawm ob lub converters tshaj ob-theem pulsewidth-modulation-based drives.Multilevel converters rau cov hluav taws xob loj loj.
Txij li xyoo 1994, Lub Tsev Kawm Ntawv Qib Siab Minnesota tau ua haujlwm ntev dhau los ntawm kev hloov kho hluav taws xob hluav taws xob thiab tshuab hluav taws xob / tsav cov chav kawm. Qhov kev hloov kho tshiab no tso cai rau kev tswj hwm digital los koom ua ke rau hauv thawj cov chav kawm, yog li qhia cov tub ntxhais kawm yam lawv yuav tsum tau kawm, ua rau cov chav kawm no txaus siab, thiab muab kev sib txuas tsis tu ncua rau cov kev kawm qib siab. Los ntawm kev nthuav qhia luv luv hauv ob qho kev kawm tiav qib siab, qhov kev hloov kho tshiab no txhawb cov tub ntxhais kawm kom kawm cov kev kawm cuam tshuam hauv cov txheej txheem logic controllers, microcontrollers thiab digital signal processor applications. Nyob rau hauv lub xeev kwv yees nyob rau hauv hluav taws xob drives.Qhov no ua kom muaj kev kawm thawj zaug uas muaj txiaj ntsig hauv chaw ua haujlwm nrog rau kev kawm tiav qib siab uas ua rau muaj kev tshawb fawb thiab kev txhim kho kev ua haujlwm. Qhov no restructuring muaj ntau yam ntawm nws. Cov ncauj lus tsis tu ncua uas nkim sijhawm thiab ua rau cov tub ntxhais kawm yuam kev raug tshem tawm. Txhawm rau koom nrog kev tswj hwm hauv thawj cov kev kawm, cov txheej txheem tshwj xeeb yog tsim los qhia cov ntaub ntawv zoo dua. Hauv thawj chav kawm hauv hluav taws xob hluav taws xob, lub tsev thaiv tau pom nyob rau hauv cov khoom siv hluav taws xob uas siv hluav taws xob ntau dua.
Nrog ze li ob feem peb ntawm cov hluav taws xob thoob ntiaj teb siv los ntawm hluav taws xob tsav, nws yuav tsum tsis txhob xav tsis thoob tias lawv cov kev tswj kom zoo sawv cev rau kev txuag hluav taws xob zoo. Kev siv hluav taws xob tau zoo kuj tseem muaj cov ntawv thov nyob deb ntawm thaj chaw xws li Hoobkas automation (robotics), kev thauj mus los huv (hybrid-hluav taws xob tsheb), thiab txuas ntxiv (cua thiab hnub ci) kev tswj hwm kev siv hluav taws xob. Advanced Electric Drives siv physics-raws li txoj hauv kev los piav qhia cov ntsiab lus tseem ceeb ntawm kev tswj hluav taws xob niaj hnub thiab nws txoj haujlwm nyob rau hauv cov xwm txheej zoo. Tus sau Ned Mohan, tus thawj coj ntev xyoo hauv Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob (EES) kev kawm thiab kev tshawb fawb, qhia txog kev nqis peev ntawm kev tswj kom raug, kev sim siab MATLAB thiab Simulink, thiab ua tib zoo xav txog hauv kev tsim cov tshuab hluav taws xob txhais tau tias txuag nyiaj ntau hauv lub zog thiab nyiaj daus las. Muab cov tub ntxhais kawm ib txoj hauv kev tshiab rau kev kho lej ntawm dq-axis hloov pauv ntawm abc theem ntau, cov Hluav Taws Xob Tshaj Tawm: Kev Ntsuas, Tswj, thiab Kev Ua Qauv Siv MATLAB/Simulink.
Ntawm ib sab tes tus neeg soj ntsuam nonlinear yog tsim, whereas ntawm qhov tod tes, lub xeev ceev yog kwv yees los ntawm kev siv cov khoom qias neeg los ntawm txoj hauj lwm ntsuas. Cov derivative qias neeg yog qhov kwv yees version ntawm qhov zoo tshaj plaws derivative uas qhia txog kev kwv yees yuam kev ob peb zaug txheeb xyuas hauv daim ntawv thov tsav. Vim li no, peb lub tswv yim hauv kev ua haujlwm no muaj nyob rau hauv kev piav qhia ntau yam ntawm kev ua haujlwm ntawm cov khoom siv qias neeg nyob rau hauv muaj ob qho tib si qauv tsis paub tseeb thiab kev ntsuas nrov nrov. Txog qhov kawg no, ib qho kev tshawb fawb tau qhia. Cov ntaub ntawv tshawb fawb suav txog kev kwv yees rotor ceev hauv cov hlau nplaum ruaj khov stepper lub cev muaj zog, los ntawm kev xav tias rotor txoj hauj lwm thiab cov hluav taws xob hloov pauv tau ntsuas. Tsis tas li ntawd, daim ntawv no nthuav tawm cov lus hais txog kev sib txuas ntawm cov neeg siv khoom qias neeg thiab cov neeg soj ntsuam, thiab qhov zoo thiab qhov tsis zoo ntawm ob txoj kev no kuj tau hais tseg.
Statistical method for electric machine optimization siv rau hluav taws xob drives.
Ib txoj hauv kev yog muab rau kev xaiv thiab ua kom zoo dua lub zog tsav hluav taws xob los ntawm kev txheeb xyuas cov ntsiab lus tseem ceeb-rau-zoo ntawm lub zog tsav hluav taws xob raws li Six Sigma txoj kev xav. Cov ntsiab lus tseem ceeb-rau-zoo muaj xws li qhov hnyav, ntim, kev cia siab, kev ua haujlwm thiab tus nqi. Ntau yam kev tsim qauv tuaj yeem raug soj ntsuam los xaiv qhov zoo tsim. Cov txheej txheem tsim yuav suav nrog lub tshuab hluav taws xob hom, cua txias, kev sib txuas hluav taws xob thiab hluav taws xob-mechanical interface.
Cov Ntsiab Cai ntawm Cov Hluav Taws Xob Hluav Taws Xob, nthuav qhia cov ntsiab lus tseem ceeb thiab cov ntsiab lus tseem ceeb hauv qab tshuab hluav taws xob, hluav taws xob hluav taws xob, thiab hluav taws xob tsav rau cov tub ntxhais kawm hluav taws xob engineering ntawm qib kawm tiav. Nyob rau hauv lub xeev kwv yees nyob rau hauv hluav taws xob drives.Feem ntau cov phau ntawv uas twb muaj lawm ntawm hluav taws xob drives tsom rau ntawm converters thiab waveform tsom xam (tsis quav ntsej cov neeg kho tshuab load dynamics), los yog ntawm lub cev muaj zog yam ntxwv (muab luv luv shrift rau tsom xam ntawm converters thiab controllers). Phau ntawv no muab cov ntsiab lus ua tiav ntawm qhov kev kawm, nyob rau theem tsim nyog rau cov tub ntxhais kawm EE. Phau ntawv no coj cov neeg nyeem los ntawm kev txheeb xyuas thiab tsim cov khoom siv hluav taws xob ua tiav, suav nrog kev them nyiaj ntawm cov khoom siv hluav taws xob, lub cev muaj zog, hloov pauv, ntsuas, thiab cov tswj hwm. Ntxiv nrog rau kev ua cov ntawv nyeem, phau ntawv no ua haujlwm zoo thiab siv tau rau cov kws tshaj lij hluav taws xob tsav tsheb.
Hardware-in-the-loop simulation yog niaj hnub no tus qauv qauv rau kev sim cov khoom siv hluav taws xob hauv kev lag luam tsheb. Txij li cov tsav hluav taws xob thiab cov khoom siv hluav taws xob hluav taws xob muaj ntau dua thiab tseem ceeb hauv kev siv tsheb, cov tshuab no yuav tsum tau muab tso rau hauv cov khoom siv-hauv-lub voj voog simulation. Lub zog hloov hluav taws xob thiab cov tsav hluav taws xob tau siv ntau yam kev siv hauv tsheb niaj hnub no (hybrid hluav taws xob lossis hluav taws xob hluav taws xob, hluav taws xob tswj hluav taws xob, DC-DC converters, thiab lwm yam). Qhov ntau ntawm cov ntawv thov, topologies, thiab qib zog ua rau muaj ntau txoj hauv kev sib txawv thiab cov kev daws teeb meem rau kev sim kho vajtse-hauv-lub voj voog. Daim ntawv no muab cov ntsiab lus ntawm kev kho vajtse-hauv-lub-lub voj simulation ntawm lub zog hluav taws xob thiab hluav taws xob tsav hauv kev lag luam tsheb. Cov thev naus laus zis tam sim no tau piav qhia thiab cov teeb meem yav tom ntej tau piav qhia.
Kev ntsuas qhov tseeb ntawm lub zog poob hauv cov cuab yeej ua haujlwm siab yog qhov nyuaj. Kev ntsuas cov qauv rau kev hloov pauv kev lag luam thiab ua tiav cov tsav hluav taws xob, suav nrog ob lub tshuab hluav taws xob thiab cov hloov pauv, yuav pib siv sai sai, thiab cov qauv ntsuas rau cov cuab yeej no yuav tsum suav nrog. Nyob rau hauv txoj kev calorimetric, lub zog poob yog ntsuas ncaj qha. Txawm li cas los xij, cov calorimeters uas tau nthuav tawm yav dhau los yog cov txheej txheem tshwj xeeb, thiab yog li ntawd, lawv feem ntau muaj cov txheej txheem nyuaj heev. Yog li ntawd, lawv cov kev siv tau rau kev ntsuam xyuas ntawm cov hluav taws xob hluav taws xob yog txwv.Nyob rau hauv lub xeev kwv yees nyob rau hauv hluav taws xob drives. Lub tswv yim ntsuas kev ua haujlwm calorimetric tau qhia hauv qhov kev tshawb fawb no rau lub zog poob txog li 2 kW. Xws li lub zog poob tuaj yeem siv tau nrog cov khoom siv hluav taws xob niaj hnub tam sim no txog li 110 kW. Kev tsim kho ntawm lub tswv yim yog yooj yim thiab lub teeb yuag. Nws tsis tas yuav muaj cov qauv tsim los yog thaj chaw loj hauv qhov chaw ntsuas. Lub tswv yim yog scalable thiab duplicate rau ntau qhov sib txawv. Cov khoom sib txawv nrog cov cabling sib txawv tuaj yeem ntsuas yam tsis muaj teeb meem.Calorimetric lub tswv yim rau kev ntsuas lub zog poob mus txog 2 kW hauv hluav taws xob tsav.
Aux Boiler SIM 321 Digital Input 6ES7 321 -1BL00 - 2AA0 1
Aux Boiler SIM 321 Digital Input 32 CH 6ES7 321 -1BL00 - 0AA0 1
Aux Boiler SIM 321 Digital Input 16 CH 6ES7 321 -1BH02 - 0AA0 1
Aux Boiler SIM 322 Digital Output 32 CH 6ES7 322 -1BL00 - 0AA0 1
Aux Boiler SIM 322 Digital Output 16 CH 6ES7 322 -1BH01 - 0AA0 1
Aux Boiler SIM 331 Analog Input 8-Channel 24V 13Bit 6ES7 331 - 1KF01- 0AB0 1
Aux Boiler SIM 331 Analog Input 8 CH 6ES7 331 - 7KF02 - 0AB0 1
Aux Boiler SIM 331 Analog Input 8 CH 6ES7 331 - 7HF01 - 0AB0 2
Aux Boiler SIM 332 Analog Output 8 CH 6ES7 332 - 5HF00 - 0AB0 1
Aux Boiler SIM 332 Analog Output 4 CH 6ES7 332 - 5HD01 - 0AB0 1
Cov tshuab ua liaj ua teb niaj hnub yuav tsum tau ua kom zoo tshaj plaws. Feem ntau lawv twb tau nruab nrog hluav taws xob tswj tshuab. Cov tsav tsheb ntawm cov khoom siv ua liaj ua teb niaj hnub no feem ntau yog siv tshuab lossis hydraulic. Kev txhim kho tsis ntev los no thiab kev txhim kho hauv hluav taws xob tsav ntxiv dag zog rau lawv cov kev siv tau hauv cov tshuab ua liaj ua teb. Kev txo qis roj siv los ntawm kev ua haujlwm siab thiab cov txheej txheem ua haujlwm tsis siv neeg yog qhov txaus siab. Nyob rau hauv cov nqe lus ntawm system architecture thiaj li hu ua agro-hybrid-structures yuav muab tau los ntawm automotive-hybrid-systems. Lawv yuav tsum tau txhais thiab xaiv ua ke nrog rau qhov yuav tsum tau muaj functionality. Qee qhov txiaj ntsig ntawm kev tshawb fawb ntawm Austrian siv thiab cov tuam txhab siv tshuab hais txog kev txaus siab rau hluav taws xob tsav thiab lub peev xwm yuav raug nthuav tawm.
Hluav taws xob tsav system nrog ntau chav nyob ntawm tus neeg tsav tsheb yog ib daim ntawv tseem ceeb ntawm kev tswj kev sib kis. Hluav taws xob synchronous tsav tsheb feem ntau yog qhov teeb meem tseem ceeb rau lub kaw lus. Lub hauv paus ntsiab lus ntawm kev tswj hwm synchronous thiab peb hom kev tswj hwm synchronous tau nthuav tawm hauv kab lus no, thiab lawv cov yam ntxwv tau tham hauv cov ntsiab lus.
Cov qauv tau nthuav tawm hauv daim ntawv sib npaug hauv Circuit Court kom khaws tus kheej ntawm cov tsis muaj kab. Cov kab hluav taws xob, raug xaiv raws li Γ lossis thim rov qab Γ daim ntawv, yog yooj yim dua li cov qauv T-form Circuit Court. Lawv cov kev ntsuas tau yooj yim txiav txim siab los ntawm kev ntsuas lub davhlau ya nyob twg. Cov teebmeem loj ntawm kev sib nqus tsis sib nqus tau suav nrog hauv cov qauv hauv txoj hauv kev uas yog qhov tseeb dua li qhov feem ntau tau txais nrog cov pa T-form circuits. Kev ua qauv ntawm lub sij hawm harmonics kuj tau tham txog.
Ntau hom Hardware-In-the-Loop simulation rau hluav taws xob drives .Hardware-in-the-loop (HIL) simulations yog siv ntau dua los ntsuas kev ua tau zoo ntawm cov hluav taws xob tsav. Software simulations ua rau txhim kho kev tswj hwm ntawm qhov kev kawm. Nyob rau hauv cov ntaub ntawv no feem ntau ntau ntawm simplifications yog xav kom txo lub sij hawm xam. Ua ntej kev siv lub sijhawm tiag tiag ntawm kev tswj hwm, HIL simulations tuaj yeem yog cov kauj ruam tseem ceeb heev. Yog li cov cuab yeej kho vajtse tau qhia hauv lub voj kom coj nws cov kev txwv tiag tiag rau hauv tus account. Hauv daim ntawv no, peb yam sib txawv ntawm HIL simulation tau pom zoo: theem teeb liab, theem fais fab, thiab qib txhua yam. Ib qho piv txwv yog muab rau lub traction system ntawm hluav taws xob scooter.
Kev txheeb xyuas cov teeb liab yog ib qho teeb meem tshwm sim hauv kev siv hluav taws xob tsav. Daim ntawv no qhia txog kev siv wavelet transforms los rho tawm thiab txheeb xyuas cov khoom siv zaus. Thaum xub thawj, kev ntsuas tam sim no los ntawm qhov tsis tu ncua voltage / hertz daim ntawv thov raug lim siv ntau lub wavelets thiab cov txiaj ntsig piv nrog cov qauv lim dej. Ib txoj kev pseudoadaptive denoising yog tom qab ntawd tau thov raws li cov wavelets uas kho cov theem ntawm decomposition nyob ntawm lub rotor ceev. Thaum kawg, wavelets yog siv nyob rau hauv ib tug high zaus txhaj tshuaj ceev kev kwv yees thiab pom tau hais tias yuav superior rau cov pa txoj kev nyob rau hauv xws li mob, qhov twg cov ntaub ntawv muaj txiaj ntsig yuav nyob ntawm ntau zaus thiab muaj cov khoom siv tsis raug. Cov kev sim thiab simulated tau txheeb xyuas cov nqe lus no.
Ob qhov teeb meem tseem yog ib qho kev sib tw loj hauv kev tsim thiab kev siv cov kev tswj hluav taws xob siab tshaj plaws, uas yog, kev rov qab los ntawm lub zog braking thiab caij-los ntawm kev muaj peev xwm ntawm kev tsav tsheb. Sib nrug los ntawm cov kev daws teeb meem zoo tib yam, xws li rov qab-rau-rov qab thiab matrix converters, ib txoj hauv kev raws li qhov zoo tib yam diode pem hauv ntej-kawg-tsav converter nruab nrog lub zog-kho khoom siv hauv qee qhov kev siv, xws li traction thiab nqa drives. Txoj hauv kev no tau los ua kom pom tseeb tsis ntev los no nrog kev txhim kho sai ntawm electrochemical ob txheej capacitors, thiaj li hu ua ultracapacitors. Txhawm rau kom ua tiav qhov kev ua tau zoo thiab kev ua haujlwm zoo dua, lub ultracapacitor txuas nrog lub tsav ntawm dc-dc converter. Lub converter yog tswj nyob rau hauv xws li ib txoj kev raws li ua kom tiav lub hom phiaj tswj: kev tswj ntawm lub dc-bus voltage, lub ultracapacitor lub xeev ntawm tus nqi, thiab ncov-power filtering. Hauv daim ntawv no, peb tau tham txog kev ua qauv thiab kev tswj hwm ntawm lub tshuab hluav taws xob tswj hluav taws xob siv hluav taws xob siv lub tshuab hluav taws xob ultracapacitor ua lub zog khaws cia thiab cov khoom siv hluav taws xob thaum muaj xwm ceev.
Tsim tus tswj ceev rau sensorless hluav taws xob tsav raws li AI cov tswv yim: kev sib piv Cov kev tswj ceev raws li (1) pub-forward neural network, (2) neuro-fuzzy network, thiab (3) tus kheej-organising Takagi-Sugeno ( TS) txoj cai raws li tus qauv tsim. Kev sib piv ntawm tus cwj pwm tsav nrog peb hom AI raws li kev tswj ceev tau ua. Tsis tas li ntawd, kev sib piv yog ua los ntawm kev hwm rau qhov kev ua tau zoo ntawm kev tsav tsheb tau txais nrog cov khoom siv zoo tshaj plaws PI maub los. Kev tshawb fawb ntxaws ntxaws ntawm ntau qhov kev hloov pauv qhia tau hais tias qhov kev ua tau zoo tshaj plaws, hais txog qhov tseeb thiab kev suav tsis yooj yim, yog muab los ntawm tus kheej tswj hwm Takagi-Sugeno. Cov tswj tau tsim thiab sim rau cov nroj tsuag uas muaj qhov sib txawv-ceev sib cais zoo siab DC lub cev muaj zog.
Los ntawm EMC qhov kev xav, kev sib koom ua ke ntawm cov tshuab hluav taws xob tsav rau hauv cov tsheb niaj hnub no yog qhov kev sib tw loj heev. Lub tshuab hluav taws xob tsav hluav taws xob yog cov khoom siv tshiab uas muaj lub zog hluav taws xob siab, lub zog hloov hluav taws xob, lub tshuab hluav taws xob thiab cov hluav taws xob tiv thaiv lossis cov hluav taws xob tsis muaj zog. Kev kho lub tshuab hluav taws xob tshiab no lossis nws cov khoom siv raws li cov khoom siv hauv tsheb raws li EMI cov txheej txheem kuaj thiab kev txwv emission yuav ua rau muaj teeb meem tsis sib haum xeeb. Hauv daim ntawv no, EMC cov teeb meem cuam tshuam txog kev sib koom ua ke ntawm lub tshuab hluav taws xob tsav mus rau hauv lub tsheb nrog cov neeg caij tsheb tau tshawb xyuas. Cov khoom ntawm cov tsav tsheb tau raug tshuaj xyuas los ntawm cov suab nrov lossis ib feem ntawm txoj kev sib txuas hauv lub tshuab hluav taws xob tshiab ntawm lub tsheb. Cov txiaj ntsig tau los kuj tuaj yeem siv los txiav txim siab cov suab nrov uas tau txais txiaj ntsig ntawm lub tsheb npav siab voltage ntawm lub tshuab hluav taws xob tsav.
Txo harmonics PWM tswj kab-sab converter rau hluav taws xob drives A txo-harmonics mem tes-dav modulator thiab nws daim ntawv thov rau kev tswj ntawm peb-theem kab-sab fais fab converter rau ib tug ceev-variable AC tsav tau piav. Lub tswv yim pulse-width modulation scheme rau qhov voltage qhov inverter txiav txim siab txhua tus neeg hloov tam sim ntawm lub hauv paus ntawm kev hloov kho tsis tu ncua volt-thib ob qhov nyiaj tshuav ntawm qhov siv vector thiab qhov tseeb hloov lub xeev vector. Lub generated mem tes ua ntu zus tau pom tias yog asynchronous. Lub Fourier spectra yog tus cwj pwm los ntawm qhov tsis muaj qhov siab-amplitude discrete carrier Cheebtsam. Lub emission ntawm acoustic suab nrov radiated los ntawm magnetic Cheebtsam yog txo. Cov txiaj ntsig tau sim tau los ntawm lub tshuab hluav taws xob hloov hluav taws xob ua haujlwm los ntawm 660 V kev lag luam hluav taws xob. DC-link voltage yog 1200 V.
Ib txwm muaj ob-theem high-frequency pulse width modulation (PWM) inverters rau lub cev muaj zog tsav muaj ntau yam teeb meem cuam tshuam nrog lawv cov kev hloov pauv siab uas ua rau cov hom hluav taws xob sib txawv thiab qhov hloov hluav taws xob siab (dV / dt) rau lub cev muaj zog windings. Multilevel inverters daws cov teeb meem no vim tias lawv cov khoom siv tuaj yeem hloov pauv ntawm qhov zaus qis dua. Nyob rau hauv lub xeev kwv yees nyob rau hauv hluav taws xob drives.Ob qhov sib txawv multilevel topologies raug txheeb xyuas siv los ua lub zog hloov hluav taws xob rau cov tsav hluav taws xob: lub cascade inverter nrog cov khoom sib cais DC; thiab rov qab-rau-rov qab diode clamped converter. Lub cascade inverter yog lub ntuj haum rau lub tsheb loj tag nrho cov hluav taws xob tsav vim yog qhov kev ntsuas VA siab tau thiab vim tias nws siv ntau theem ntawm DC voltage qhov chaw uas yuav muaj los ntawm cov roj teeb lossis roj hlwb. Lub rov qab-rau-rov qab diode clamped converter yog qhov zoo tagnrho qhov chaw ntawm AC voltage muaj xws li lub tsheb fais fab hybrid. Simulation thiab cov txiaj ntsig kev sim qhia tau hais tias qhov zoo tshaj ntawm ob lub zog hloov pauv no dhau PWM-raws li tsav.
Lub tswv yim rau kev txo qis-kev sib haum xeeb PWM modulator, raws li tau thov rau kev tswj ntawm kab-sab fais fab converter rau qhov sib txawv ceev hluav taws xob tsav, tau piav qhia. PWM algorithm txiav txim siab lub sijhawm nyob rau hauv lub xeev ntawm txhua qhov hloov pauv vector raws li kev soj ntsuam ntawm lub sijhawm hloov pauv voltage siv vector. Txij li thaum tsis muaj kev siv ua rau lub teeb liab ua haujlwm tas li, cov qauv mem tes generated ua asynchronous. Nws yog cov cuab yeej tseem ceeb ntawm txoj kev no los tsim ib qho quasicontinuous harmonic spectrum nyob rau hauv uas tag nrho cov zaus Cheebtsam muaj ntau los yog tsawg sib npaug zos magnitude. Qhov no yog qhov kom zoo dua piv nrog cov cab kuj raws li PWM tswj cov tswv yim uas nthuav tawm cov neeg nqa khoom siab thiab cov khoom siv sab hauv hauv lawv cov kev sib raug zoo. Lub emission ntawm acoustic suab nrov radiated los ntawm AC lim inductor yog txo.
