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# João Oliveira

38 total contributions since 2014

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Question

Asynchronous machine block - Where are the turns ratio parameter?
Hi, In simulink, when using the asynchronous machine block where can I set or see the tuns ratio between the stator and the r...

fast 5 Jahre ago | 0 answers | 0

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answers

Question

Reduce noise of Te signal in a Induction machine
Hi, I've two circuits whith an asynchronous machine. One of them is very simple, I conected the stator to a 3 phase voltage s...

etwa 5 Jahre ago | 0 answers | 0

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answers

Question

Three phase series RLC load block
Hi, When I use the "3 phase series RLC load" block how exactly does it work? For the parameters of the figure for example...

etwa 5 Jahre ago | 0 answers | 0

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answers

Question

Power factor regulation of Asynchronous Machine Block?
Hi, When using the block asynchronous machine, where or how can I see the power factor of the system? In the parameters tab o...

etwa 5 Jahre ago | 0 answers | 0

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answers

Question

Tracking mode on PI block
Hi, Can someone explain me the function of the tracking mode of the PI block? On the documentation it says "Activate signal t...

etwa 5 Jahre ago | 1 answer | 0

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answer

Question

Speed reference of "Wind Turbine Doubly-Fed Induction Generator" block!
Hi, When using the "Wind Turbine Doubly-Fed Induction Generator" block with the external mechanical torque option checked is ...

etwa 5 Jahre ago | 1 answer | 0

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answer

Answered
How to convert an output signal of a PLL block of simulink (triangular ramp) into a continuos ascending signal?
Just to clarify what I need because my post can be a little confusing. This signal is the phase of a voltage, so this block g...

etwa 5 Jahre ago | 0

Answered
How to convert an output signal of a PLL block of simulink (triangular ramp) into a continuos ascending signal?
Help! This is the output of the pll block (varying between 0 and 2pi). How can I get this signal, not limited in the 2*pi? I ...

etwa 5 Jahre ago | 0

Question

How to convert an output signal of a PLL block of simulink (triangular ramp) into a continuos ascending signal?
Hi, I'm using a 3 phase pll block to track the phase of a voltage signal. The output "wt" of this block it's a triangular ram...

etwa 5 Jahre ago | 2 answers | 0

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answers

Question

Operations with voltages phases on simulink!
Hi I've a circuit built on simulink in which I use a 3-phase PLL block to track the stator voltage phase of an asynchronous ...

etwa 5 Jahre ago | 0 answers | 0

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answers

Question

Is it normal the matlab exit when running a simulation?
Hi, I've a circuit on simulink which take more than a hour to simulate. Sometimes, during this simulations, my matlab just sh...

etwa 5 Jahre ago | 1 answer | 0

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answer

Question

Speed DFIG vector control
Hi, I've a system built on simulink which includes an asynchronous machine working as a generator, feeded by a torque applied...

etwa 5 Jahre ago | 0 answers | 0

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answers

Question

With the mechanical speed as input is it the asynchronous machine working as a generator?
Hi I'm using the builtin block of the asynchronous machine insimulink which receives as input the mechanical speed from a cus...

etwa 5 Jahre ago | 1 answer | 0

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answer

Question

How to change the amplitude of the block Sin wave function during different instants within a simulation?
Hi, I need to use the sin wave function block, but I need to set diferents amplitudes over the simulation time. Let's see...f...

mehr als 5 Jahre ago | 0 answers | 0

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answers

Question

How to create a step with multiple final values in different instants?
Hi, I need a block similar to the step to use on simulink but I need one, which gives me final values at different instants. ...

mehr als 5 Jahre ago | 0 answers | 0

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answers

Answered
How to plot the mean of a sinusoidal function
It is possible to use the block Discrete FIR Filter to get the moving average result? It seems this block is the replace of "Wei...

mehr als 5 Jahre ago | 0

Question

which rotor velocity should I use to calculate the slip? Wm or Wr?
Hi, When using the asynchronous machine SI block of Simulink which rotor velocity should I use to calculate the slip? slip...

mehr als 5 Jahre ago | 0 answers | 0

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answers

Answered
How to plot the mean of a sinusoidal function
Thanks Graham but isn't there any built in block on simulink that provide this type of output?

mehr als 5 Jahre ago | 0

Question

How to plot the mean of a sinusoidal function
Hi, Like the image below I want to use a block from simulink which allow me to plot the mean value (green line) of a sinusoid...

mehr als 5 Jahre ago | 3 answers | 0

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answers

Question

What is the unit of the Wr output of the asynchronous machine pu block of Simulink?
Hi, What is the measurement unit of the Wr output of the asynchronous machine pu block of Simulink? It's rad/s or some kind ...

mehr als 5 Jahre ago | 1 answer | 0

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answer

Answered
Simulink block for transformation
I also need the block transfornation abc to alpha beta but I dont find it. Where can I get it?

mehr als 5 Jahre ago | 0

Question

Simulink - Warning algebric loop
Hi, I've a circuit on simulink where I collect three phase currents and voltages from a measuremnt bus and then use them in b...

mehr als 5 Jahre ago | 1 answer | 0

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answer

Question

How to build in simulink an assynchronous generator driven by an assynchronous motor?
Hi, I want built a system on simulink where I've an a assynchronous motor with squirrel cage rotor driving an a assynchronous...

mehr als 5 Jahre ago | 1 answer | 0

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answer

Answered
Get the output of the abc-to-dq transformation isolated
help?

mehr als 5 Jahre ago | 0

Question

Get the output of the abc-to-dq transformation isolated
Hi, I've a circuit built on simulink which is presenting 2 errors like the ones on the images bellow. This two errors appears...

mehr als 5 Jahre ago | 1 answer | 0

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answer

Question

Passing variables from a file in a DFIG machine on simulink
Hi, I have a circuit on simulink which includes a dfig machine. I want that the parameters of the dfig machine, be read from ...

mehr als 5 Jahre ago | 0 answers | 0

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answers

Question

How can I use just the "d" component of the output of a abc-to-dq transformation?
Hi, I have a circuit on simulink like the one of the image bellow and I want to 2use the "d" component of the block abc-to-dq...

mehr als 5 Jahre ago | 1 answer | 0

answer

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