关键词: 磁化试验, 脉冲发电机, 变频率

Abstract:

In order to check if there is iron core lamination short out and the bolt are clamped, stator core magnetizing test of generator is needed after completed generator stator iron lamination and impaction in the site. Alternating current flow into the field winding twined on the stator core, the core loss is generated in the core and the core is heated. By measuring the temperature rise of the various parts of the core, it is estimated that whether the core is qualified based on the test standard. Due to the working frequency of 300MVA pulse generator is changing but not constant 50Hz power frequency, thus the unit iron loss of stator core of variable frequency of 67Hz and 99.6Hz is obtained through calculation. The stator core magnetizing test results of pulsed generator show that the stator core installation quality and insulation are qualified. The test results provide reference for stator core magnetization test of the variable frequency generator.

Key words: Magnetizing test, Pulse generator, Variable frequency