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milyas009
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Join Date: Mar 2018
Posts: 6

DFIG Technical Data

08/27/2018 2:24 PM

I want to do DFIG simulation for Micro hydro power plant. I need technical data for DFIG which need to be used in such a case.

Required data is like:

Generator power, Stator and rotor voltage, resistances and inductances, leakage inductance, electromagnetic torque

Let take the number of poles equal to 4 and frequency of 50 Hz.
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Pathfinder Tags: DFIG electromagnetic torque parameters stator power technical data
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SolarEagle
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#1

Re: DFIG Techinical data

08/27/2018 2:55 PM

https://www.mathworks.com/help/physmod/sps/examples/wind-farm-dfig-detailed-model.html

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milyas009
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#2
In reply to #1

Re: DFIG Techinical data

08/29/2018 2:47 AM

Thanks for time and valuable reply,

Actually here the instructor is using 2.5MW generator, which lies beyond the range of Micro and hence the respective parameters...

My aim is to get data for generator with ratting less than 100KW, acceptable for micro hydro.
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RAMConsult
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#3
In reply to #2

Re: DFIG Techinical data

08/29/2018 9:40 AM

The parameters of small machines can vary widely; therefore, you should contact the manufacturers of microhydro machines directly. If all else fails then you should do the problem in the per unit system by taking the parameters from a machine near your power rating, then changing the base quantities (MVA/kVA, kV, etc.) to match your machine's.

You should also be aware that a 4 pole, 50Hz machine will need sufficient waterflow to keep it spinning at 1,500RPM, or some form of gearbox to have the output speed of the turbine/gearbox raised to the alternator synchronous speed. The alternative is to use a DC generator/battery/inverter combination to provide a constant 50Hz output.

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RAMConsult
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#5
In reply to #3

Re: DFIG Techinical data

08/29/2018 10:04 AM

My error! The fact that this is a DFIG removes the need for any form of speed matching because that is handled by the electronics controlling the field of the machine (it also increases the complexity of the analysis). Next time I won't answer until I've finished my coffee!

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milyas009
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#6
In reply to #5

Re: DFIG Techinical data

08/29/2018 11:05 AM

Hope you had done with your coffee... Funny

RAMConsult i found your comments always helpful. It is a good idea to go for pu calculation...

I will try by myself but any how can you please help me in doing so, If let us suppose i am considering 80KW or 85KW generator.

I will provide you complete technical data for a 2.5MW generator from a video shared by SolarEagle in the previous comments.

Thanks..
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SolarEagle
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#4
In reply to #2

Re: DFIG Techinical data

08/29/2018 9:51 AM

You should be able to find some figures here, but the exact figures will be exclusive to your installation...The amount of water, head, type and brand of equipment used, all these variables and more will determine output...First start with how much water and head you have to work with, then determine type of equipment to be used...

http://www.nooutage.com/hydroele.htm

https://www.google.com/search?safe=off&ei=HqOGW6_SIa-a_QamyKyQAg&q=dfig+technical+data+for+micro+hydro+projects&oq=DFIG+Technical+Data+for+micro+hydro+project&gs_l=psy-ab.1.0.33i21k1j33i160k1l3.2427.10760.0.16659.24.24.0.0.0.0.166.2143.21j3.24.0....0...1c.1.64.psy-ab..0.21.1831....0.6rKynU6b2dc

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milyas009
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#7
In reply to #4

Re: DFIG Techinical data

08/29/2018 11:13 AM

Yes you are right SolarEagle..

I decided to calculate all the parameters for 80KW generator. Since i am just doing simulation so therefore head and discharge is not a big issue as it can adjusted correspondingly.
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SolarEagle
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#8
In reply to #7

Re: DFIG Techinical data

08/29/2018 8:39 PM

https://ir.library.oregonstate.edu/downloads/x633f2363

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Crabtree
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#9

Re: DFIG Technical Data

08/30/2018 4:50 PM

DFIG?

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SolarEagle
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#10
In reply to #9

Re: DFIG Technical Data

08/30/2018 6:38 PM

https://www.sciencedirect.com/science/article/pii/S0142061513002275

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