Pali njira zambiri zochepetsera ma harmonic, koma palibe njira yothetsera mavuto onse.Mitundu yosiyanasiyana yamagetsi, katundu wosiyanasiyana, timafunikira njira yabwino kwambiri yochepetsera ma harmonic.
Gome ili m'munsiyi yerekezerani za THDi zamaukadaulo osiyanasiyana ochepetsera ma harmonic m'mbuyomu.
| Six pulse vfd palibe riyakitala/kutsamwitsa | Six pulsed vfd Low DC bus capacitor | Kugunda kwachisanu ndi chimodzi vfd+5% riyakitala/kutsache | 3 gawo vfd yogwira kutsogolo kutsogolo | Six pulse vfd + passive fyuluta | Zambiri vfd | |
| Mtundu wa THDi | 90--120% | 35-40% | 35-45% | 3--5% | 5--10% | 12 kugunda: 10-12% 18 kugunda: 5-6% |
| Ubwino | Njira yosavuta komanso yotsika mtengo, yovomerezeka pakuyika ndi ma drive ang'onoang'ono ochepa | Yankho losavuta komanso lotsika mtengo lomwe limapangitsa kuchepetsa ma harmonics apano | Yankho lokhazikika pamapulogalamu a HVAC | Kuchita bwino kwambiri kwamtundu uliwonse wa mayankho. Kutha kuwonjezera mphamvu zamagetsi panthawi yocheperako. Unity fundamental power factor. Itha kupereka mabuleki osinthika | Pongoganiza kuti malo akuthupi alipo, fyuluta yowonongeka ya harmonic ikhoza kuwonjezeredwa pambuyo pa kuyendetsa galimoto, ngati ma harmonics atsimikiziridwa kukhala vuto. | Traditional harmonic kuchepetsa njira. |
| kuipa | Zomwe zili ndi ma harmonic apamwamba, osavomerezeka kuti akhazikitse ndi ma drive okwera kwambiri. | Kusokonezeka kwamagetsi apamwamba, kupitilira ma pulse vfd asanu ndi limodzi ndi 5% riyakitala/chotsamwa. | Makina okhala ndi ma drive ochulukirapo kapena okulirapo, angafunike kuchepetsedwa kowonjezera kwa harmonic. | Kuyendetsa komweko kumapanga kutentha kochulukirapo kuposa koyendetsa sikisi imodzi yokhala ndi riyakitala. | Mphamvu yotsogola pa katundu wopepuka pokhapokha ma capacitor a fyulutayo azimitsidwa wa dera. Kuopsa kwa ma resonances pakati pa ma capacitor a fyuluta ndi ma capacitor ena mu dongosolo. | Kuchita bwino kwambiri kumafunikira mphamvu yamagetsi ya AC yokhazikika komanso yosokoneza pang'ono yakumbuyo. Zovuta kwambiri kubwereketsa m'munda. |
Ndi chitukuko chosalekeza chaukadaulo wamagetsi wa IGBT, magawo atatu atsopanofyuluta yogwirayakhala ikukwezedwa kwambiri ndikugwiritsidwa ntchito pamsika.APFamapeza chizindikiro chamakono mu nthawi yeniyeni kudzera mu thiransifoma yakunja yakunja, ndikulekanitsa gawo la harmonic kupyolera mu dera lodziwikiratu lamkati, ndikupanga chipukuta misozi ndi gawo losiyana la ma harmonics mu dongosolo kudzera mu IGBT mphamvu yosinthira mphamvu kuti izindikire ntchito ya kusefa. kunja kwa harmonic.
The linanena bungwe chipukuta misozi panopa waAPFzimasiyanasiyana molondola malinga ndi ma harmonics amphamvu a dongosolo, kotero sipadzakhala vuto la malipiro.Kuphatikiza apo,APFali ndi ntchito yoteteza katundu wambiri.Pamene ma harmonic a dongosolo ndi aakulu kuposa mphamvu fyuluta, chipangizo akhoza basi kuchepetsa linanena bungwe 100% mphamvu oveteredwa popanda mochulukira.
Nthawi yotumiza: Nov-24-2023