I have a 1 MW Generator which is coupled to a 600KW INDUCTION FURNACE. The induction furnace operates at 600 Hz.

On loading to only 30%, the frequency of the generator increases from 50 HZ to 55 HZ and the Generator shuts down.

Please explain why and what can be done?
Your answers will be appreciated.

Thanks

 

What I would suspect is that it is an extremely non linear load with peak currents that trip the gen, or as likely, the furnace inverter is modulating the generator output and messing with the feedback. A scope will tell all.

regards
cww

 

Replying to BK's 26-Sep-10 (11:28)... could be ferroresonance!

Can you forward a simplified Single-Line-Diagram showing major components?

Regards, Phil Corso (cepsicon[at]aol[dot]com)

 

HI,

I guess you are in Europe or in a country that uses 50 HZ Generators and the frequency of the generator goes to 55 Hz with the load... My first idea could be that something is wrong in your frequency controller of your generator. also a higher frequency from your source will affect the frequency of your furnace and all the system will go crazy

We will wait for your diagram, also you may include maker and model of generator and furnace

Regards
German

 

Dear

Harmonic Analysis by a experienced Engineer shall solve your problem by applying a Static or dynamic Harmonic Filter.

You can have a lot of Technical Material by Googling the Internet on the topic of "Electrical Harmonics", "Harmonic Analysis" and " Harmonic Filters"