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alessandro


TU Berlin

Active since 2014

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Question


simulink asynchronous machine rotor parameters
Hello, in the model of the asynchronous machine the rotor currents(ir_,ir_b,ir_c), voltages(v_ra,v_rb, v_rc) and inductances ar...

6 years ago | 0 answers | 0

0

answers

Question


d-q transformations for asynchronous machines
I'm simulating an asynchronous machine with wound rotor. If I use the d-q transformations with the reference frame aligned with ...

6 years ago | 0 answers | 0

0

answers

Question


friction factor in asynchronous machine model
Does anyone know how can I find the friction factor for the model of an asynchronous machine? I need to realize a PI speed contr...

7 years ago | 0 answers | 0

0

answers

Question


SimPowerSystem, how can I use parameters inside a block?
Hi, I´m using the Asynchronous machine SI units block and I need to use the parameters such as the inductance Lm, Lls or Llr for...

7 years ago | 1 answer | 0

1

answer

Question


How can I find the largest number
Hi, I have 3 numbers and I have to find the biggest one, what is the best way? This is the code: T=200 if isempty(coun...

7 years ago | 4 answers | 0

4

answers

Question


Matlab code problem in a S-function
Hi, I have this loop in my code: global counter T=200 if counter>=T counter=0 . . else c...

7 years ago | 1 answer | 0

1

answer

Question


s-function error ,flag = 3 (output), at time 0.0.
Hello, I have problem with my s-function Error in 'Celanovic_3niv2/Nearest three vectors/S-Function' while executing ...

7 years ago | 1 answer | 0

1

answer

Question


Pulse generation from duty cycles in Space vector modulation
hi, I have duty cycle values d1, d2 & d3 for a 3 level Neutral Point Converter. Now how to generate 12 pulses for it using the d...

7 years ago | 0 answers | 0

0

answers

Question


How can I change the dimension of a global variable?
I want to define a global variable: global v v=[1 2] but I have this error: Size mismatch (size [1 x 1] ~= size [2 x ...

7 years ago | 1 answer | 0

1

answer

Question


How declare a global vector
I want to declare a global variable V1, dimensions [2 x 1]: global V1 Vll=[floor(Vrefg); floor(Vrefh)]; V1=Vll; Bu...

7 years ago | 2 answers | 0

2

answers

Answered
Can anybody help me simulating a vector control modulation for inverters?
I don't know how I can create the hexagons in Matlab and check where is the reference voltage. Help me please!

7 years ago | 0

Question


Can anybody help me simulating a vector control modulation for inverters?
I have to create a vector selection algorithm to generate a reference voltage like in the article I have attached. Can anyone he...

7 years ago | 1 answer | 0

1

answer