Parameter pilihan thyristor kanggo 1000kw induction melting furnace

Tegangan baris mlebu sing dirancang yaiku 380V, lan data ing ngisor iki bisa dipikolehi kanthi pitungan:

Tegangan DC Ud=1.35×380V=510V

Id arus DC=1000000÷510=1960A

Tegangan frekuensi penengah Us=1.5×Ud =765V

Dirating silikon rectifier saiki IKP=0.38×Id=745A

Tegangan penyearah silikon UV = 1.414 × UL = 1.414 × 510V = 721V

Inverter silikon dirating saiki Ikk = 0.45 × 19600 = 882A

Inverter silikon voltase dirating UV=1.414×Us=1082V

SCR model pilihan skema: pilih Xiangfan Taiji SCR:

Amarga nganggo output rectifier tunggal 6-pulsa, SCR rectifier milih KP2000A / 1400V (total 6), yaiku, arus sing dirating yaiku 2000A lan voltase dirating yaiku 1400V. Dibandhingake karo nilai teoritis, margin voltase 1.94 kaping lan margin saiki 2.68 kali.

Thyristor inverter milih KK2500A / 1600V (total papat), yaiku, arus sing dirating yaiku 2500A, lan voltase sing dirating yaiku 1600V. Dibandhingake karo nilai teoritis, wates voltase 1.48 kaping, lan wates saiki 2.83 kaping.