Jirgin ruwa mai shinge na lantarkicnc busbar shearing punching machine

Tabbatar da gwaji na ainihin ƙirar asalin lalatta da ƙirar yanzu Don yin daidaitaccen daidaituwa a kwance, zamu sha ƙarfin a duka ƙarshen IGBT a cikin ainihin zane Bayan an kashe, a samu wadannan: 1) Tsarin ƙira na asali

Tsarin juye-juye na yanzu da

kuma ƙarfin igiyar lantarki a ƙarshen ƙarshen IGBT sune Tunda yanayin ƙazamar ƙaƙƙarfan ƙarfin DC-side capacitor kusan 100nH ne kayan busar kayan aiki, ƙararrawa a ƙwanƙwasa ƙwanƙwasa kusan 120nH, Ductabi'ar cutar IGBT shine kusan 20nH, kuma jimlar rashin daidaiton busasshen a cikin ainihin ƙirar shine kusan 760nH. Saboda haka, Jimlar aikin rarraba layin aiki kusan 1000nH ne. A wannan yanayin, bisa ga tsari (1), wutar lantarki da aka shigo dashi

shine: ΔU = Ls * di / dt = 1000x10-3x125 / 0.28≈446V Inda dt shine lokacin faduwar lokacin IGBT (0.28 μs), domin jimlar wutar lantarki a fadin IGBT ita ce: Ut = Ud + ΔU = 800 + 446 = 1246V Wannan ya dace daidai da ƙimar da aka ƙididdige, saboda haka, zane na asali dole ne ya ƙara ƙara ƙarfin capacitor, da IGBT Fitar wutar lantarki dole ne ya zama 1700V. 2) Tsarin ƙira na yanzu currentarar kashewa da kuma ƙarfin lantarki a ƙarshen iyakar IGBT Ya dace da hanyar da ke sama, da farko lissafin jimlar layin aikin Ls: Ls = 0.3 + 100 + 120 + 20 = 240.3nH Rayazanta cikin ingancin motar bas shine 0.3nH. Matsalar wutar lantarki ta hanyar IGBT ita ce: ΔU = Ls * di / dt = 240.3x10-3x125 / 0.28≈107V Inda dt shine lokacin faduwar lokacin IGBT (0.28 μs), domin jimlar wutar lantarki a fadin IGBT ita ce: Ut = Ud + ΔU = 800 + 107 = 907V Wannan ya dace da ainihin ƙimar da aka ƙididdige, sabili da haka, ƙirar ta yanzu ba ta buƙatar ƙara ƙarfin capacitor, adadin IGBT Voltagearancin wutar lantarki na yau da kullun na iya zaɓar matakin 1200V, wanda ke rage yiwuwar fashewar IGBT.