大型发电机灭磁及转子过压保护分析

Analysis of large generators demagnetization and rotor overvoltage protection

通过目前国内外普遍采用的灭磁方案比较及存在的问题，重点介绍了新型PTC线性电阻配合非线性电阻灭磁的动作原理，提出了一种新颖可靠的发电机灭磁方案。

Through comparing with the demagnetization scheme that generally adopted both at home and abroad and existing problems, this thesis introduces the high energy PTC material, cooperates with the nonlinear resistance to demagnetization＇s movement principle, and puts forward a kind of novel and reliable demagnetization scheme of generator.