How can I simulate variable resistor in Matlab\Simulink\SimPowerSystem?

More Yousry Atia's questions See All

About Inductor filter design for PV Grid-connected system?

01 February 2017 6,272 7 View

Can the amorphous core can be used in 50 Hz transformer core?

11 December 2015 3,254 15 View

Why in Matlab simulink the discrete Pwergui needs initialisation for Ts at starting in matlab command window?

Sometimes at starting of matlab\simulink, the discrete Powergui block in my simulink program needs to be set its sampling time Ts at matlab command window, otherwise I get an error. Any one...

31 December 2014 712 2 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

Which is the most convenient manufacturing software for Additive Manufacturing?

Which tools can be used to generate machine codes for additive manufacturing?

02 March 2021 7,220 2 View

Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 View

No title

Does anyone have the experience of using Taq Man probes in the QIAGEN Rotar- Gene qPCR machine?

01 March 2021 5,311 1 View

How to eliminate Steady state error from Reinforcement learning genetic algorithm code?

The following code (see 1st 2 images attached) is used to produce PID controller values that are designed to control the system (G). The code finds the PID controller values (noted as k) by using...

28 February 2021 6,560 14 View

How to prevent ANFIS Model from negative prediction values in MATLAB?

I have input and output data set for "ANFIS modeling in MATLAB", and I am getting some negative predicted values of output in testing. However, the predicted values of output in training are...

28 February 2021 3,459 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View

Yousry Atia

Thanks Daniel, but I need DC dynamic load or at least single phase dynamic load because the PV cell or module has two terminals. As the current increase, the voltage decrease. This will be done using variable resistor or DC dynamic load.

So as you work in MathWorks inc., you can suggest the suitable block in Simulink

Thanks agin for help

Thank you Daniel for help, O.K. I put controlled voltage source block controlled by signal from repeating sequence block. It works well to measure the I-V and P-V curves of the solar cell array.

Yukai Chen

Hi Yousry,

How you only put controlled voltage source block controlled by signal from repeating sequence block as a variable resistor?

I met the same problem, I want to add a variable load in the simpowersystem.

Matias Lopez

I found a model in this publication: https://curve.coventry.ac.uk/open/file/5571ec05-786f-c505-1e50-67202392b695/1/abulhawacomb.pdf

I am attaching you the schematic.

However, what I am looking for is something different. I only know the power requirements of a load over the time. In this model, the input is a value of a resistor. If in our system, the power source has a constant voltage, and we know the power requirement, we can easily calculate the value of the resistor for that power requirements and run the model.

In my case I am working with a fuel cell model (a battery model it is also suitable) and therefore, the voltage varies as a function of the current. Then, if we only know the power requirement of the load, the input of a resistor value is not appropiate, since the voltage varies and we will not have the power requirment over the time. Then, how can I modify this model in order to have as an input to the variable load the power?

In other words, how to modify the resistor according to the voltage change in order to have always the same power requirements?