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- 4th February 2012, 18:18 #1

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- 4th February 2012, 18:18

- 4th February 2012, 20:19 #2

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## Re: battery model in simulink matlab

The 1/u block is just the reciprocal: f(u) = 1/u.

The voltage-voltage block contains the non-linear function between SOC (state of charge) and output voltage.

It depends on the battery type - may be something like: 1.2 + 0.1*SOC - 0.01*SOC^2 etc...

Without accurate knowlegde of this block the model is useless.

P.S. Rts/Cts and Rtl/Ctl model short and long constant transientsLast edited by dave9000; 4th February 2012 at 20:39.

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- 5th February 2012, 04:33 #3

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## Re: battery model in simulink matlab

thanks for replying.. :)

I m not sure about the details of the model given in the paper .. some data seems to be missing but i m unable to figure out how to proceed can u plz help me.. to knw whether this paper can be implemented without the practical values.. thanks a lot..

p.s link: http://power.ece.drexel.edu/Students...%20Testbed.pdf

my request seems to be silly but plzz help me.. i dnt knw how to procedd in designing a battery model in matlab for hybris system applicaitons... thanks a lot..

- 5th February 2012, 08:07 #4

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## Re: battery model in simulink matlab

It's a good paper. You can find most of the data that you need from the graphs!

For example you find: Rts, Cts, Rtl, Ctl, full charge Vout, etc...

Start with a first order model (Vout=4.1-alpha1*SOC) and find a good alpha1 from the simulations (match some discharge plot)...

- 5th February 2012, 08:07

- 5th February 2012, 08:17 #5

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- 11th May 2012, 10:06 #6

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## Re: battery model in simulink matlab

sorry for the bump, but I have the exact same problem. @chd123 did you manage to simulate the model after all? Some help would be nice..I found the relation between the VOC and SOC from another paper, but when I simulate this the current is zero so everything is zero.. any ideas?

Thx in advance..

- 2nd August 2012, 04:16 #7

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## Re: battery model in simulink matlab

hi, i'm using simulink R2010a which has a battery in the library. I'm working on a grid energy storage model where the storage model control system is meant to check the network voltage (p.u) and then do one of the following;

1] discharge the battery if the voltage is low i.e. below a specified limit of say 0.94 or

2] charge the battery if the voltage is high i.e. above a specified limit of say 0.97 so as to restore the voltage between the predefined limits or

3] take no action

Could i get some help in designing the system. thanx

- 15th February 2013, 12:47 #8

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## Re: battery model in simulink matlab

HI hope you are well,

why do not use the model provided by Matlab, i do not understand why you are trying to develop your own model, see you can implement the simuklink model from the Matlab without being worried about the battery model,

- 7th April 2013, 20:17 #9

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