Doubt in circuit of battery

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Nuno
Nuno 2011-6-8
回答： shermon sheran 2014-1-27
Hi... I have construct a circuit that uses the energy of a PV cell to utilize in charges and/or to charge a battery. My model is the next, but i have a problem in connect my charge to a circuit... What is my error?
http://img20.imageshack.us/img20/5792/batm.png

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Nuno
Nuno 2011-6-16
I want to charge the battery from the Sine Wave and the under part spends the energy sent from Sine Wave... Is in this form?
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Nuno
Nuno 2011-6-16
Yes, i had seen it...
One more thing... A battery set in simulink, when we defined to Nominal Voltage=12V, the voltage reaches values of almost 25V. It´s true? Because the Fully Charged Voltage=13,0658V...
Why this appened?
Arnaud Miege
Arnaud Miege 2011-6-17
Can you accept an answer and create a new question rather than keep appending to this one? Also, please provide more details: which battery? In SimPowerSystems? under which conditions? etc...
Arnaud

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Arnaud Miege
Arnaud Miege 2011-6-8
You can't connect Simscape and SimPowerSystems components together, Have a look at this thread and that thread on the newsgroup for more details.
Arnaud
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Nuno
Nuno 2011-6-8
Ok Arnaud! But the logic of the circuit is the correct?

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Nuno
Nuno 2011-6-8
Arnaud Miege, this form is a correct?
http://img861.imageshack.us/img861/750/bat2x.png
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Arnaud Miege
Arnaud Miege 2011-6-8
You're measuring the current on the Simscape side and applying on the SimPowerSystems side with a controlled current source. That's correct, but to get the interface correct and complete, you also need to measure the voltage on the SimPowerSystems side and apply it on the Simscape side with a controller voltage source. Note that this will likely introduce an algebraic loop in your model, that you may need to break with, say, a low-pass filter (transfer function) with an appropriately chosen cut-off frequency.

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Nuno
Nuno 2011-6-9
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Arnaud Miege
Arnaud Miege 2011-6-9
Not quite. You need to measure the voltage on the SimPowerSystems side, not the Simscape side, and inject it on the Simscape side with a controlled voltage source. Basically, if you measure current on one side, you need to measure voltage on the other, and vice-versa.

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Nuno
Nuno 2011-6-9
Ah, ok... I already understand... But i tried this, but i don´t connected S-PS to Voltage sensor like the image.. What's wrong?
http://img718.imageshack.us/img718/7609/batqb.png
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Arnaud Miege
Arnaud Miege 2011-6-9
You need to measure the voltage on the SimPowerSystems side using a voltage measurement block from SimPowerSystems, not Simscape:
http://www.mathworks.com/help/releases/R2011a/toolbox/physmod/powersys/ref/voltagemeasurement.html
You can then apply that voltage on the Simscape side using a controlled voltage source from Simscape:
http://www.mathworks.com/help/releases/R2011a/toolbox/physmod/simscape/ref/controlledvoltagesource.html

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Nuno
Nuno 2011-6-13
Arnaud, but in this form i can't do. what is wrong?
http://img828.imageshack.us/img828/4945/batt.png
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Nuno
Nuno 2011-6-13
Sorry for questions, but who i connected "Connection Port"?
I want to have a input signal, but then I can´t connect to the Controlled Current Source... Why?
http://img37.imageshack.us/img37/354/signall.png
Arnaud Miege
Arnaud Miege 2011-6-14
The input signal goes into the signal port (S), the + and - ports are electrical ports.

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Nuno
Nuno 2011-6-14
Ok! I already implement... Are correct? http://img846.imageshack.us/img846/7546/exempleg.png
But, appear the next error: "Nonlinear solver: Linear Algebra error. Failed to solve using iteration matrix. Transient initialization, solving for consistent states and modes, failed to converge."
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Nuno
Nuno 2011-6-15
Ok...
that's okay right? http://img6.imageshack.us/img6/6498/batnd.png
Arnaud Miege
Arnaud Miege 2011-6-15
Yes!! Although you appear to have grounded the + terminal of the battery. Is that what you intended to do? In other words, is your current source in the right orientation?

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shermon sheran
shermon sheran 2014-1-27
dear Nuno, can you send me this circuit as i stuck in the first part of doing the signal builder, and also the value. My email address is shermonsheran@gmail.com kindly please help me, i'm doing battery charger project. thank you

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