Momwe mungathetsere mafunde a harmonic mu ma frequency frequency inverter system?

Ndi zosowa za chitukuko cha mafakitale, pofuna kuchepetsa katundu wa dongosolo ndikupulumutsa mphamvu, chiwerengero chachikulu chama frequency inverter amagwiritsidwa ntchito m'mafakitale.Kugwiritsa ntchitofrequency converter imatha kukwaniritsa zopulumutsa mphamvu, koma imabweretsanso zovuta zina monga ma harmonics.Tinakumana ndi malo odziwika kwambiri omwe ma inverters ochuluka kwambiri amagwiritsidwa ntchito poyang'anira mpope wamadzi.Kugwira ntchito kwa zida zambiri za inverter kumabweretsa kusokonekera kwakukulu kwadongosolo, komwe kumakhudza kwambiri magwiridwe antchito otetezeka komanso okhazikika.

Kuchokera pamawonekedwe oyeserera am'munda, dongosolo lalikulu losokoneza ma harmonic ndi 5, 7 ma harmonics.Asanayambe ntchito yaAPF, chiwopsezo chonse cha kupotoza kwadongosolo kwafika pa 39.5%.Pambuyo pa ntchito yayogwira harmonic fyuluta, chiwopsezo chonse cha kusokonezeka kwa dongosololi chimachepetsedwa kufika pafupifupi 6%, mawonekedwe a waveform amabwezeretsedwa, ndipo ma harmonics a dongosolo lililonse amachepetsedwa kwambiri.Kuchokera pa chithunzi 1 kufika pa chithunzi 4, tikhoza kuona bwino kwambiri kuti zotsatira za kulamulira kwa harmonic mutatha kugwiritsa ntchitofyuluta yogwirandizodziwikiratu komanso zothandiza.

Kuopsa kwa ma harmonics ndikwambiri.Ma Harmonics amachepetsa mphamvu ya kupanga, kutumiza ndi kugwiritsa ntchito mphamvu yamagetsi, kutenthetsa zida zamagetsi, kutulutsa kugwedezeka ndi phokoso, kupangitsa kukalamba, kufupikitsa moyo wautumiki, ngakhale kusagwira ntchito kapena kuwotcha.Ma Harmonics amatha kuyambitsa kumveka kofanana kwapagulu kapena kumveka kotsatizana mumagetsi, zomwe zimakulitsa zomwe zili mu harmonic ndikupangitsa kuti capacitor ndi zida zina ziwotche.Ma Harmonics angayambitsenso kusokoneza chitetezo cha relay ndi zida zodziwikiratu, zomwe zimapangitsa chisokonezo pakuyeza mphamvu yamagetsi.Kunja kwa mphamvu zamagetsi, ma harmonics amatha kusokoneza kwambiri zida zoyankhulirana ndi zida zamagetsi.

Thefyuluta yamphamvu yogwiraimalumikizidwa ndi dongosolo lamagetsi mofananira, kudzera mu thiransifoma yakunja yakunja kuti iwonetse magawo atatu apano.Chigawo chachikulu chowongolera chiwerengera mtengo wolipiridwa womwe ukufunidwa ndikutumiza lamulo ku IGBT, IGBT imasintha ma frequency osinthira kuti akwaniritse ntchitoyo ndiAHFkuchepetsa mphamvu ya harmonic.