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Hello to all,
I've an issue regarding turbogenerator's start up.
During start up (not connected to grid, no load) at about 60% nominal speed of turbo-generator, generator's frequency and voltage goes up to its nominal (60 Hz and 450 V) and turbine speed increase stops. also not responding to manual speed increase.
As I remember, the formula for frequency related to speed is f=pn/120. Generator nominal speed is 1800 rpm, so I've 4 pole generator.
So I can't wrap my mind around this thing, how can it be that generator speed is just around 1100 rpm, but frequency and voltage is already at nominal.
Where the fault could be?
Looking forward to your comments,
Thank you very much!
I've an issue regarding turbogenerator's start up.
During start up (not connected to grid, no load) at about 60% nominal speed of turbo-generator, generator's frequency and voltage goes up to its nominal (60 Hz and 450 V) and turbine speed increase stops. also not responding to manual speed increase.
As I remember, the formula for frequency related to speed is f=pn/120. Generator nominal speed is 1800 rpm, so I've 4 pole generator.
So I can't wrap my mind around this thing, how can it be that generator speed is just around 1100 rpm, but frequency and voltage is already at nominal.
Where the fault could be?
Looking forward to your comments,
Thank you very much!