Korndorfer system to start a syncronous motor

[Juanje]

I have to put to work a 1600 Kw 3300V syncronous motor with a autotransformer fot start it. I don´t know the sequence witch combine the regulation of the indirect excitation and the Korndorfer system (autotransformer, close method) to start a syncronous motor.

 

[swgrmfg]

This sounds like a brushless synchronous machine. If it is, the sequence is simple. Start the motor. Apply the field. If and when it reaches about 95 to 97% speed, the motor will apply its internal field and pull in on its own. If you have regulation, turn it on after the motor is in synch, and... If VAR regulation, no need for load; If PF regulation, it's best to wait after load.
Good luck.

 

[jraef]

Isn't it important to make sure that you don't have an incomplete sequence on the RVAT starter before energizing the excitation system? I know it is on brush-type synch motors.

JRaef.com
Eng-Tips: Help for your job, not for your homework Read faq731-376

 

[swgrmfg]

Good point, JRaef. It is best.