Answered
How do I generate pulses from the block PWM Generator to operate the switches if they are more than four?
Hello Salah, you need to determine the appropriate duty cycle for each of your half bridges. I see 4 half bridges. So you nee...

6 meses ago | 0

Answered
Error "Derived parameter initialization for Vbe_sat failed to converge"
Hello Ander, the issue is that RC and RE need to be lower to calculate a realistic Vbe-sat. I believe it needs to be lower tha...

6 meses ago | 0

| accepted

Answered
Variable resistor with Tustin solver
Hello, I think the interpolation function is incompatible with the variable resistor. I'll submit a bug report and see what I ...

6 meses ago | 0

| accepted

Answered
P, PI, PID Implementation in two-op-Amps
hello Steven, there are two pieces. 1st, you need to write your PID controller in form A(Bs+1)(Cs+1)/s. This gives you A = R1...

6 meses ago | 0

Answered
Longitudinal differential protection of synchronous generators in mathlab
Hello Yuri, you will want to start by learning to use simscape, and then simscape electrical. Landing page: https://www.math...

6 meses ago | 0

Answered
How can I create a new column vector to store dates?
Hello Salman, you can use datetime for this: https://www.mathworks.com/help/matlab/matlab_prog/represent-date-and-times-in-MATL...

6 meses ago | 0

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Answered
Assign Slider Value Changing to a vector element in App Designer
Hello Giovanni, do you mean to multiply u_fs = Kfinv*f(changingValue)? right now it is Kfinv*f, where f is [100x1]. that mean...

6 meses ago | 0

Answered
transformer output amplitude increasing oscillations
In addition to adding snubber resistors, you can reduce your time step or increase your tolerance. Maksure sure you are using t...

6 meses ago | 0

Answered
problems connecting a Voltage Measurement Block to parallel RLC branch circuit.
I'm sorry this answer comes too late to be useful: It sounds like the first issue is a UI bug preventing connection of lines th...

6 meses ago | 0

Answered
Is the abc_to_dq0 Transformation correctly defined in SimPowerSystems?
It is correct, howerver, there are mutliple standards for reference frames which can cause confusion. (such as a 90 degree offse...

6 meses ago | 1

Answered
Problem with Matlab example model in SimPowerSys - Performance of Three PSS for Interarea Oscillations
I ran this model with changes and saw no oscillations. Please include example files of problems when you want help debugging.

6 meses ago | 0

Answered
battery electrical model on simulink
This is being answerd as part of a Simscape Electrical Matlab Answers cleanup. I apologize for this being too late to be useful...

6 meses ago | 0

Answered
How to obtain the magnetization currents of a transformer in Simulink ?
If you are specifically looking for magentization, a simple transformer block will not capture the dynamics to the level of deta...

6 meses ago | 0

Answered
Simulink model for buck-boost cascaded inverter
This is part of a Matlab Answers Simscape Electrical cleanup effort: This can be done in simscape electrical or specialized pow...

6 meses ago | 0

Answered
is the black vertical bar bus bar?
It can also be a power measurement block that was filled black and made small to look like that.

6 meses ago | 0

Answered
Can i construct 24 bus reliability test syste using simpowersystem blocks like sync mashine in matlabsimulink??
Yes it is, please look at examples to see larger systems.

6 meses ago | 0

Answered
how to calculate zero sequence impedance(resistance,inductance,capacitance) for destributed parameter line block if i am only having the positive sequence parameters
Unfortunately you can't. positive sequence inherently has no zero sequence aspects to it.

6 meses ago | 0

Answered
How to build an Op Amp?
try adjusting your maximum time step to something smaller. It could be that the simulatoin is accurate, it's just taking such l...

6 meses ago | 0

Answered
Control the output power of the generator when connected to a infinite grid
This sounds like an issue with your control algorithm and how the generator is interacting with it's connections. It is likely ...

6 meses ago | 0

Answered
How to find Total Harmonic Distortion(THD) in power system model using wavelet toolbox?
use the powergui button to analyze THD instead. Or, start here to bring in your data: https://www.mathworks.com/help/wavelet/gs...

6 meses ago | 0

Answered
Power_analyze-increase accuracy (state-space)
If you need greater than double precision tolerances you will need to solver this problem with custom data types and math librar...

6 meses ago | 0

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Answered
Is there a typo in the simpowersystems transformer impedance dialog?
which transformer block? most of them take inductances or (pu) inductances. It may say impedance if it is asking for R and L i...

6 meses ago | 0

Answered
How can find a transfer function of the model in base paper
Use frequency response estimation if the system cannot be linearized analytically. https://www.mathworks.com/help/slcontrol/fre...

6 meses ago | 0

Answered
How to break down three phase pulses into single phase for gate pulses?
Hello Mark, sorry for this being too late for you. Use mux and demux blocks to access combined signals. You can also use sele...

6 meses ago | 0

Answered
How can i change mask block function name and parameter .
You would need to provide an example of the system you are using and how you are trying to get the snap shot. Specialized Power...

6 meses ago | 0

Answered
How can I use the simplfied synchronous generator in SimPowersystems in a phasor simulation type?
power_simplealt can be switched to phasor mode, there will be a small perturbance at start, but then it works.

6 meses ago | 0

Answered
Fuel cell stack model equations. why 60000 on stack utilisation equation?
Hello Leo, I assume this is in reference to the equations under the hood: 60000*FC.Nc*u(2)*FC.R*u(5)/(FC.z*FC.F*u(4)*FC.Pstd*u(3...

6 meses ago | 0

Answered
Initialization commands cannot be evaluated.
You would need to share a model for this type of error to be debugged.

6 meses ago | 0

Answered
problem using linear transformer in simpower system..
Please refer to examples on this page to see how this block is used correctly: https://www.mathworks.com/help/physmod/sps/powers...

6 meses ago | 0

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