1. Umthombo wokubusa okuvumelanayo
Igama elithi pulse current liqale ngokuhlaziywa kwezibalo kwe-pulse current ehlobene nezinto ezizwakalayo.Senze isisekelo esihle ngekhulu le-18 nele-19.UFourier et al.ihlongoze ngokucacile indlela yokuhlaziya i-harmonic, esasetshenziswa kabanzi ezinhlelweni zokuphakela amandla.Inkinga ye-pulse current iqala ngekhulu lama-20.Inkathi kanye neminyaka yawo-1930 kudonse ukunaka kwawo wonke umuntu.Ngaleso sikhathi, ukusetshenziswa kweFrance kweziguquli ze-mercury arc ezimile kwabangela izinguquko zamaza ku-voltage kanye namanje.Ngo-1945, i-JCRead yashicilela ama-converter pulse currents ahlobene.Ngeminyaka yawo-1950 kanye nawo-1960, ngenxa yokuthuthukiswa kobuchwepheshe bokudlulisa obuqondile be-high-voltage eqondile, kwakhululwa ama-converter ahlobene, okubangele izinkinga eziningi zamanje ze-pulse ohlelweni lokuhlinzekwa kwamandla.Kusukela ngawo-1970, ngenxa yokuthuthukiswa okusheshayo kobuchwepheshe be-electronics yamandla, izinsiza ezihlukahlukene ze-elekthronikhi zamandla Uhlelo lokunikezwa kwamandla kagesi, ukukhiqizwa kwezimboni, ezokuthutha kanye nokusetshenziswa kwasekhaya kuya ngokuya kuvame.Imiphumela emibi ye-pulse currents iya ngokuya iba mibi kakhulu.Emhlabeni wonke baye bayinaka ngokwanele inkinga yamanje yokushaya kwenhliziyo.Izingqungquthela zezemfundo eziningana ngezinkinga zamanje ze-pulse zibanjwe emhlabeni jikelele.Zonke izikhungo ezinkulu zocwaningo lwezemfundo zenze imithetho nezimfuneko zokukhawulela i-pulse current yesistimu yokuphakelwa kwamandla kanye nempahla yokusetshenziswa kwamandla.Izinto zikagesi zishiselwa ngokweqile, zibangele ukudlidliza nomsindo, futhi zenze ungqimba oluvikelayo lube brittle.Impilo yesevisi iba mfushane, futhi kwenzeka amaphutha noma umonakalo.I-pulse current ibangela ingxenye yesistimu yokunikeza amandla ukuthi izwakale ochungechungeni noma ngokuhambisana.Izobangela ukuthi idivayisi yokuvikela i-relay kanye nedivayisi yokuvikela ingasebenzi kahle, yenze ukukalwa kwamandla kagesi kanye nokuqinisekiswa kungahambi kahle, futhi i-pulse current yangaphandle yesistimu yokuphakelwa kwamandla izodala ukuphazamiseka okukhulu ezintweni zokuxhumana kanye nemikhiqizo kagesi.
Indlela yokulawula i-pulse current?Ikakhulukazi esicini sokushintshwa kwamandla kagesi kanye nokugcinwa kwezimoto, ngokuthuthukiswa kokulawulwa kwezimboni ezishintshayo, ukuvikelwa kwemvelo nokonga amandla, izinqubomgomo zokonga ugesi kanye nokunciphisa ukungcola, izinjini azivamile ukuxhunywa ngokuqondile kugridi yamandla futhi zisetshenziswe ngokuqondile.Ngokuvamile, ziqhutshwa yiziqalo ezithambile.I-inverter ingakwazi ukulawula ngokuguquguqukayo amandla okukhipha kanye nesivinini se-motor, ihlangabezane nezidingo zomsebenzi, futhi inemiphumela emangalisayo ekuvikelweni kwemvelo nokonga amandla.Njengoba wonke umuntu azi, isiqalisi esithambile sibangele inkinga ye-harmonic yamanje kugridi yamandla.Zonke izinkampani zikagesi aziwavumeli amakhasimende ukuthi ethule i-harmonic current eyeqile kugridi yamandla.Amakhasimende anesibopho sokuqeda amandla e-harmonic abangelwa isiqalisi esithambile.Ngesiqalisi esithambile Ukusetshenziswa okubanzi nokuvikelwa kwamamotho, i-MTE ihlanganisa ama-reactors ochungechunge, ama-reactor aphumayo, izihlungi ze-dv/dt neminye imikhiqizo, idizayini eyingqayizivele ye-dV Sentry inikeza ukuvikeleka okungcono komthwalo ohlangothini, okuvumela amamotho e-AC, izintambo neziqalisi ezithambile zivikelwe. kusuka kuma-voltage spikes okusebenza kanye nokuphazamiseka okuvela kuma-voltage okusebenza wemodi evamile.
Isihlungi esiklanywe kahle sihlanganisa ukuncishiswa okungaba ngu-50% kumodi evamile, ukuvikelwa kwamandla kagesi esigodini kanye nokunciphisa isikhathi sokukhuphuka.
2. Ukulawulwa kwe-Harmonic kugcina injongo yokonga amandla kanye nokufaneleka
Ungacabangi ukuthi ukuba khona kwe-pulse current kuzothinta kuphela ikhwalithi yamandla wegridi yamandla.Eqinisweni, kuhlobene nokusetshenziswa kwamandla kanye nezinga lamanzi nogesi.Ngamanye amazwi, uma i-harmonic yamanje ohlelweni lwegridi yamandla ingasuswa, izosiza ukugcina umgomo wokulondoloza ugesi.
Ngokuthuthukiswa kwemithetho kazwelonke yokonga ugesi kanye nokunciphisa ukungcola, izindlela ezihlukahlukene zokonga amandla zizothathwa amadolobha amakhulu, futhi ukulawulwa kwe-harmonic nakho kuzoba iphuzu elihle kakhulu lokuphumelela.
Nakuba ukuqaliswa kokulawulwa kwe-harmonic ikakhulukazi nje ukuthuthukisa ikhwalithi yamandla, kodwa ukuqinisekisa ukusetshenziswa okuvamile kwemishini, kodwa ngokuthuthukiswa kancane kancane kobuchwepheshe, akukubi kakhulu ukuyisebenzisa njengenye yezinyathelo zokugcina ukonga amandla. umphumela kungenzeka.
Ngokuvamile kunezindlela ezimbili zokufeza inhloso yokonga ugesi, enye iwukunciphisa umsebenzi wamandla ongasasebenzi, kanti enye iwukuthuthukisa ukusebenza kahle komsebenzi wamandla.
Ama-harmonic currents angabangela umonakalo omkhulu, omunye wawo okungamandla amoshekayo okuholela, noma ukulahlekelwa ukushisa kumjikelezo.Lokhu kulahlekelwa kokushisa kubonakala emandleni asebenzayo emitha kagesi yesigaba esisodwa.Uma ukulahlekelwa kwamandla e-harmonic emgqeni kungancishiswa, inhloso yokulondoloza ugesi ingafinyelelwa.
Kodwa kuthiwani ngomphumela wangempela womsebenzi othile?Ngokuphathelene nendlela yamanje yokulawula i-harmonic, okukhethiwe okuyinhloko yisihlungi esisebenzayo kanye nesihlungi samandla we-notch yohlobo lwe-passive.Lolu hlobo lwesihlungi lufakwe ochungechungeni emugqeni, futhi umphumela wangempela otholiwe awumuhle kakhulu.
Ngokuphambene, umphumela wokulawula i-harmonic ekulayisheni komthombo wamanje we-pulse uzoba okahle kakhulu.Uma isihlungi samanje se-pulse sifakwe ekulayisheni komthombo wamanje we-pulse, ngeke nje kutholakale umphumela omuhle wokonga amandla, kodwa futhi Ingaqinisekisa ikhwalithi yenethiwekhi yamandla yangaphakathi yenkampani, okuwuhlelo lwalokhu kunyuswa.
Isikhathi sokuthumela: Apr-13-2023