Ngeemfuno zophuhliso lwamashishini, ukwenzela ukunciphisa umthwalo wenkqubo kunye nokugcina amandla, inani elikhuluinverter eguquguqukayo zisetyenziswa kwiimeko zoshishino.Ukusetyenziswa kweisiguquli rhoqo ngenene inokufikelela kwiziphumo zokonga amandla, kodwa ikwazisa nezinye iingxaki ezinjengeeharmonics.Siye sadibana nesiza esiqhelekileyo apho inani elikhulu le-inverters yamandla aphezulu lisetyenziswe kulawulo lwempompo yamanzi.Ukusebenza kwenani elikhulu lezixhobo ze-inverter kubangela ukuphazamiseka okukhulu kwe-harmonic kwinkqubo, echaphazela kakhulu ukusebenza okukhuselekileyo kunye nokuzinza kwenkqubo.
Ukusuka kuvavanyo lwamaza ovavanyo lwentsimi, owona myalelo uphambili wokugqwesa i-harmonic yi-5, 7 i-harmonics.Ngaphambi kokusebenza kweAPF, ireyithi ye-harmonic yokuphazamiseka kwenkqubo ifikelele kwi-39.5%.Emva kokusebenza kweisihluzo esisebenzayo se-harmonic, ireyithi ye-harmonic yokuphazamiseka kwenkqubo iyancipha ukuya kwi-6%, i-waveform ibuyiselwe ngokuqhelekileyo, kwaye i-harmonics yomyalelo ngamnye iyancipha kakhulu.Ukususela kumfanekiso we-1 ukuya kwi-4, sinokubona ngokucacileyo ukuba umphumo wolawulo lwe-harmonic emva kokusebenzisaisihluzo esisebenzayoicacile kwaye iyasebenza.
Umonakalo we-harmonics unzima kakhulu.I-Harmonics inciphisa ukusebenza kakuhle kwemveliso, ukuhanjiswa kunye nokusetyenziswa kwamandla ombane, ukutshisa kakhulu izixhobo zombane, ukuvelisa ukungcangcazela kunye nengxolo, kwaye yenza ukuguga kwe-insulation, ukunciphisa ubomi benkonzo, kunye nokungasebenzi kakuhle okanye ukutshisa.I-Harmonics inokubangela i-resonance parallel resonance okanye uchungechunge lwe-resonance kwinkqubo yamandla, eyandisa umxholo we-harmonic kwaye ibangela ukuba i-capacitor kunye nezinye izixhobo zitshise.I-Harmonics inokubangela ukusetyenziswa kakubi kokhuseleko lombane kunye nezixhobo ezizenzekelayo, ezibangela ukubhideka kumlinganiselo wamandla ombane.Ngaphandle kwenkqubo yamandla, i-harmonics inokubangela ukuphazamiseka okukhulu kwizixhobo zonxibelelwano kunye nezixhobo zombane.
Iisihluzo samandla asebenzayoiqhagamshelwe kwinkqubo yamandla ngokunxuseneyo, ngokusebenzisa isiguquli sangaphandle sangoku ukwenza isampulu yesigaba esithathu sangoku.Iyunithi yolawulo engundoqo ibala imbuyekezo efunekayo ixabiso langoku kwaye ithumele umyalelo kwi-IGBT, I-IGBT ilungelelanise ngokuguquguqukayo ukutshintshela rhoqo ukunyusa ukusebenza kunyeAHFukuphelisa i-harmonic current.
Ixesha lokuposa: Jul-28-2023