用于感应加热的IGCT

IGCT for Induction Heating

目前,集成门极换向晶闸管(IGCT)被广泛地应用于不同的领域,诸如中电压传动(MVD)和扣联锁电力网等。针对不同的应用已经开发出了专用的器件,例如用于电压源逆变器(VSI)的反向导通(逆导)型IGCT和用于电流源逆变器(CSI)的反向阻断(逆阻)型IGCT。MVD的开关频率通常在500Hz～1kHz之间,因此开关损耗和通态压降之间的折衷要得以优化协调。对于一些其它应用,如用于感应冶炼和断路器的逆变器,其开关频率比较低,从单次(静态断路器)到几百Hz不等,适合于此类应用的低通态压降的IGCT最近已经开发成功。适用于断路器的低通态压降的4.5kV的器件已经使用一段时间,新的适用于感应冶炼的6kV的IGCT最近已经开发成功,现将在文章的结尾对其进行介绍。

Today Integrated Gate Commutated Thyristors (IGCT) are widely used for different applications such as medium voltage drives (MVD) and interties. Application specific devices have been developed such as reverse conducting IGCT for voltage source inverters (VSI) and reverse blocking IGCT for current source inverters (CSI). MVD switching frequencies are in the range of 500 Hz to 1kHz and the trade-offs between switching losses and on-state voltage drop are optimised accordingly. For other applications, such as...